/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/loop-acceleration/array_3-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 22:16:36,153 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 22:16:36,223 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 22:16:36,228 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 22:16:36,229 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 22:16:36,252 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 22:16:36,252 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 22:16:36,252 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 22:16:36,253 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 22:16:36,256 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 22:16:36,256 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 22:16:36,256 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 22:16:36,257 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 22:16:36,258 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 22:16:36,258 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 22:16:36,259 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 22:16:36,259 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 22:16:36,259 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 22:16:36,259 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 22:16:36,260 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 22:16:36,260 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 22:16:36,261 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 22:16:36,261 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 22:16:36,261 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 22:16:36,261 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 22:16:36,261 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 22:16:36,261 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 22:16:36,262 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 22:16:36,262 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 22:16:36,262 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 22:16:36,263 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 22:16:36,263 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 22:16:36,263 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 22:16:36,263 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 22:16:36,263 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 22:16:36,263 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 22:16:36,264 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 22:16:36,264 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 22:16:36,264 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 22:16:36,264 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 22:16:36,264 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 22:16:36,265 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 22:16:36,265 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 22:16:36,265 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 22:16:36,265 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 22:16:36,265 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 22:16:36,265 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 22:16:36,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 22:16:36,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 22:16:36,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 22:16:36,488 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 22:16:36,489 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 22:16:36,490 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array_3-2.i [2023-12-24 22:16:37,479 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 22:16:37,619 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 22:16:37,620 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_3-2.i [2023-12-24 22:16:37,624 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2361c712/2f91d767c25240598a47081272066e77/FLAG240bb70f5 [2023-12-24 22:16:37,636 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2361c712/2f91d767c25240598a47081272066e77 [2023-12-24 22:16:37,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 22:16:37,639 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 22:16:37,640 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 22:16:37,640 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 22:16:37,643 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 22:16:37,643 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 10:16:37" (1/1) ... [2023-12-24 22:16:37,644 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c9f79d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:16:37, skipping insertion in model container [2023-12-24 22:16:37,644 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 10:16:37" (1/1) ... [2023-12-24 22:16:37,657 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 22:16:37,767 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_3-2.i[809,822] [2023-12-24 22:16:37,781 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 22:16:37,788 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 22:16:37,796 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_3-2.i[809,822] [2023-12-24 22:16:37,799 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 22:16:37,812 INFO L206 MainTranslator]: Completed translation [2023-12-24 22:16:37,812 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:16:37 WrapperNode [2023-12-24 22:16:37,812 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 22:16:37,813 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 22:16:37,813 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 22:16:37,813 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 22:16:37,817 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:16:37" (1/1) ... [2023-12-24 22:16:37,822 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:16:37" (1/1) ... [2023-12-24 22:16:37,833 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 46 [2023-12-24 22:16:37,833 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 22:16:37,834 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 22:16:37,834 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 22:16:37,834 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 22:16:37,840 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:16:37" (1/1) ... [2023-12-24 22:16:37,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:16:37" (1/1) ... [2023-12-24 22:16:37,843 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:16:37" (1/1) ... [2023-12-24 22:16:37,854 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2023-12-24 22:16:37,854 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:16:37" (1/1) ... [2023-12-24 22:16:37,854 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:16:37" (1/1) ... [2023-12-24 22:16:37,864 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:16:37" (1/1) ... [2023-12-24 22:16:37,866 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:16:37" (1/1) ... [2023-12-24 22:16:37,867 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:16:37" (1/1) ... [2023-12-24 22:16:37,868 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:16:37" (1/1) ... [2023-12-24 22:16:37,869 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 22:16:37,870 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 22:16:37,870 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 22:16:37,870 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 22:16:37,870 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:16:37" (1/1) ... [2023-12-24 22:16:37,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 22:16:37,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 22:16:37,901 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 22:16:37,908 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 22:16:37,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 22:16:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 22:16:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 22:16:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-24 22:16:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-24 22:16:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-24 22:16:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 22:16:37,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 22:16:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-24 22:16:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-24 22:16:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-24 22:16:37,969 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 22:16:37,970 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 22:16:38,082 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 22:16:38,108 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 22:16:38,110 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-24 22:16:38,112 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 10:16:38 BoogieIcfgContainer [2023-12-24 22:16:38,115 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 22:16:38,118 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 22:16:38,118 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 22:16:38,120 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 22:16:38,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 10:16:37" (1/3) ... [2023-12-24 22:16:38,121 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4466784e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 10:16:38, skipping insertion in model container [2023-12-24 22:16:38,122 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:16:37" (2/3) ... [2023-12-24 22:16:38,122 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4466784e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 10:16:38, skipping insertion in model container [2023-12-24 22:16:38,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 10:16:38" (3/3) ... [2023-12-24 22:16:38,124 INFO L112 eAbstractionObserver]: Analyzing ICFG array_3-2.i [2023-12-24 22:16:38,137 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 22:16:38,137 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 22:16:38,171 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 22:16:38,177 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;@9b5d1ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 22:16:38,178 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 22:16:38,181 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:16:38,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-24 22:16:38,185 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:16:38,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:16:38,186 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:16:38,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:16:38,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1780754240, now seen corresponding path program 1 times [2023-12-24 22:16:38,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:16:38,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [603012748] [2023-12-24 22:16:38,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:16:38,197 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 22:16:38,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:16:38,198 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 22:16:38,200 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 22:16:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:16:38,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 22:16:38,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:16:38,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:16:38,265 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 22:16:38,265 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:16:38,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [603012748] [2023-12-24 22:16:38,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [603012748] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 22:16:38,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 22:16:38,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 22:16:38,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142513677] [2023-12-24 22:16:38,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 22:16:38,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 22:16:38,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:16:38,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 22:16:38,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 22:16:38,289 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:16:38,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:16:38,312 INFO L93 Difference]: Finished difference Result 22 states and 30 transitions. [2023-12-24 22:16:38,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 22:16:38,314 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-24 22:16:38,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:16:38,319 INFO L225 Difference]: With dead ends: 22 [2023-12-24 22:16:38,319 INFO L226 Difference]: Without dead ends: 10 [2023-12-24 22:16:38,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 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 22:16:38,323 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:16:38,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 22:16:38,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-12-24 22:16:38,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-12-24 22:16:38,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:16:38,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2023-12-24 22:16:38,345 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2023-12-24 22:16:38,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:16:38,346 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2023-12-24 22:16:38,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:16:38,346 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2023-12-24 22:16:38,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-24 22:16:38,347 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:16:38,347 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:16:38,352 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 [2023-12-24 22:16:38,549 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 22:16:38,549 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:16:38,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:16:38,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1465143049, now seen corresponding path program 1 times [2023-12-24 22:16:38,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:16:38,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576339570] [2023-12-24 22:16:38,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:16:38,551 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 22:16:38,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:16:38,552 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 22:16:38,557 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 22:16:38,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:16:38,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 22:16:38,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:16:38,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:16:38,624 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 22:16:38,624 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:16:38,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [576339570] [2023-12-24 22:16:38,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [576339570] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 22:16:38,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 22:16:38,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 22:16:38,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162102851] [2023-12-24 22:16:38,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 22:16:38,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 22:16:38,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:16:38,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 22:16:38,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 22:16:38,638 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:16:38,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:16:38,670 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2023-12-24 22:16:38,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 22:16:38,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-24 22:16:38,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:16:38,672 INFO L225 Difference]: With dead ends: 26 [2023-12-24 22:16:38,672 INFO L226 Difference]: Without dead ends: 18 [2023-12-24 22:16:38,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 22:16:38,674 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 7 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:16:38,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 10 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 22:16:38,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-24 22:16:38,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 11. [2023-12-24 22:16:38,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:16:38,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2023-12-24 22:16:38,681 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 9 [2023-12-24 22:16:38,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:16:38,681 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2023-12-24 22:16:38,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:16:38,682 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2023-12-24 22:16:38,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-24 22:16:38,682 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:16:38,682 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:16:38,688 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 22:16:38,884 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 22:16:38,885 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:16:38,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:16:38,885 INFO L85 PathProgramCache]: Analyzing trace with hash -153121515, now seen corresponding path program 1 times [2023-12-24 22:16:38,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:16:38,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2009557610] [2023-12-24 22:16:38,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:16:38,886 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 22:16:38,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:16:38,887 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 22:16:38,907 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 22:16:38,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:16:38,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 22:16:38,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:16:38,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:16:38,952 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:16:38,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:16:38,977 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:16:38,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2009557610] [2023-12-24 22:16:38,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2009557610] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:16:38,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:16:38,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-24 22:16:38,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328556527] [2023-12-24 22:16:38,982 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:16:38,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 22:16:38,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:16:38,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 22:16:38,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-24 22:16:38,984 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:16:39,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:16:39,080 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2023-12-24 22:16:39,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 22:16:39,080 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-24 22:16:39,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:16:39,081 INFO L225 Difference]: With dead ends: 50 [2023-12-24 22:16:39,081 INFO L226 Difference]: Without dead ends: 42 [2023-12-24 22:16:39,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-24 22:16:39,082 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 49 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:16:39,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 26 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 22:16:39,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-24 22:16:39,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 14. [2023-12-24 22:16:39,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:16:39,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2023-12-24 22:16:39,086 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2023-12-24 22:16:39,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:16:39,086 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2023-12-24 22:16:39,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:16:39,086 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2023-12-24 22:16:39,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-24 22:16:39,087 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:16:39,087 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:16:39,093 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 22:16:39,293 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 22:16:39,293 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:16:39,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:16:39,294 INFO L85 PathProgramCache]: Analyzing trace with hash 2134471177, now seen corresponding path program 2 times [2023-12-24 22:16:39,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:16:39,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1920559097] [2023-12-24 22:16:39,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 22:16:39,294 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 22:16:39,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:16:39,296 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 22:16:39,297 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 22:16:39,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-24 22:16:39,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:16:39,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 22:16:39,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:16:39,344 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-24 22:16:39,344 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 22:16:39,345 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:16:39,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1920559097] [2023-12-24 22:16:39,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1920559097] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 22:16:39,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 22:16:39,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 22:16:39,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714282147] [2023-12-24 22:16:39,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 22:16:39,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 22:16:39,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:16:39,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 22:16:39,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 22:16:39,346 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:16:39,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:16:39,383 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2023-12-24 22:16:39,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 22:16:39,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-24 22:16:39,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:16:39,384 INFO L225 Difference]: With dead ends: 21 [2023-12-24 22:16:39,384 INFO L226 Difference]: Without dead ends: 17 [2023-12-24 22:16:39,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 22:16:39,385 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:16:39,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 15 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 22:16:39,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-12-24 22:16:39,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-12-24 22:16:39,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:16:39,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2023-12-24 22:16:39,388 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 13 [2023-12-24 22:16:39,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:16:39,388 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2023-12-24 22:16:39,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:16:39,388 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2023-12-24 22:16:39,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-24 22:16:39,388 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:16:39,389 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:16:39,393 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 22:16:39,590 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 22:16:39,591 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:16:39,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:16:39,591 INFO L85 PathProgramCache]: Analyzing trace with hash 2137530085, now seen corresponding path program 1 times [2023-12-24 22:16:39,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:16:39,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1131061386] [2023-12-24 22:16:39,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:16:39,592 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 22:16:39,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:16:39,593 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 22:16:39,594 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 22:16:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:16:39,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 22:16:39,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:16:39,681 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-24 22:16:39,681 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:16:39,763 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-24 22:16:39,763 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:16:39,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1131061386] [2023-12-24 22:16:39,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1131061386] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:16:39,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:16:39,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-24 22:16:39,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343848722] [2023-12-24 22:16:39,764 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:16:39,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 22:16:39,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:16:39,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 22:16:39,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-24 22:16:39,766 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:16:40,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:16:40,035 INFO L93 Difference]: Finished difference Result 97 states and 117 transitions. [2023-12-24 22:16:40,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 22:16:40,035 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-24 22:16:40,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:16:40,036 INFO L225 Difference]: With dead ends: 97 [2023-12-24 22:16:40,036 INFO L226 Difference]: Without dead ends: 86 [2023-12-24 22:16:40,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-24 22:16:40,037 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 249 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 22:16:40,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 107 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 22:16:40,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-12-24 22:16:40,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 23. [2023-12-24 22:16:40,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:16:40,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-12-24 22:16:40,042 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 16 [2023-12-24 22:16:40,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:16:40,042 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-12-24 22:16:40,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:16:40,042 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-12-24 22:16:40,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-24 22:16:40,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:16:40,042 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:16:40,051 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 [2023-12-24 22:16:40,244 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 [2023-12-24 22:16:40,245 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:16:40,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:16:40,245 INFO L85 PathProgramCache]: Analyzing trace with hash 599648869, now seen corresponding path program 2 times [2023-12-24 22:16:40,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:16:40,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381997695] [2023-12-24 22:16:40,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 22:16:40,246 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 22:16:40,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:16:40,247 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) [2023-12-24 22:16:40,248 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 [2023-12-24 22:16:40,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 22:16:40,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:16:40,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 22:16:40,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:16:40,384 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-24 22:16:40,384 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:16:40,654 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-24 22:16:40,655 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:16:40,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [381997695] [2023-12-24 22:16:40,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [381997695] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:16:40,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:16:40,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-24 22:16:40,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853997035] [2023-12-24 22:16:40,655 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:16:40,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-24 22:16:40,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:16:40,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-24 22:16:40,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-24 22:16:40,656 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:16:41,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:16:41,728 INFO L93 Difference]: Finished difference Result 193 states and 231 transitions. [2023-12-24 22:16:41,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-24 22:16:41,728 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-24 22:16:41,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:16:41,729 INFO L225 Difference]: With dead ends: 193 [2023-12-24 22:16:41,729 INFO L226 Difference]: Without dead ends: 182 [2023-12-24 22:16:41,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 22:16:41,730 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 1090 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 22:16:41,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1090 Valid, 497 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 22:16:41,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-12-24 22:16:41,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 35. [2023-12-24 22:16:41,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 34 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:16:41,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2023-12-24 22:16:41,736 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 22 [2023-12-24 22:16:41,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:16:41,736 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2023-12-24 22:16:41,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:16:41,737 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2023-12-24 22:16:41,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-24 22:16:41,737 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:16:41,737 INFO L195 NwaCegarLoop]: trace histogram [22, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:16:41,746 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 [2023-12-24 22:16:41,946 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 [2023-12-24 22:16:41,947 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:16:41,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:16:41,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1827512677, now seen corresponding path program 3 times [2023-12-24 22:16:41,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:16:41,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1097951035] [2023-12-24 22:16:41,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 22:16:41,948 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 22:16:41,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:16:41,949 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 22:16:41,949 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 22:16:42,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-24 22:16:42,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:16:42,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 22:16:42,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:16:42,052 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-12-24 22:16:42,052 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:16:42,121 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-12-24 22:16:42,122 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:16:42,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1097951035] [2023-12-24 22:16:42,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1097951035] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:16:42,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:16:42,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2023-12-24 22:16:42,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038415261] [2023-12-24 22:16:42,122 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:16:42,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 22:16:42,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:16:42,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 22:16:42,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-12-24 22:16:42,123 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:16:42,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:16:42,238 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2023-12-24 22:16:42,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 22:16:42,238 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-24 22:16:42,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:16:42,239 INFO L225 Difference]: With dead ends: 58 [2023-12-24 22:16:42,239 INFO L226 Difference]: Without dead ends: 45 [2023-12-24 22:16:42,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2023-12-24 22:16:42,240 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 15 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:16:42,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 31 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 22:16:42,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-12-24 22:16:42,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2023-12-24 22:16:42,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 43 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:16:42,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2023-12-24 22:16:42,244 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 34 [2023-12-24 22:16:42,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:16:42,244 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2023-12-24 22:16:42,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:16:42,245 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2023-12-24 22:16:42,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-24 22:16:42,245 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:16:42,245 INFO L195 NwaCegarLoop]: trace histogram [22, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:16:42,248 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 [2023-12-24 22:16:42,447 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 22:16:42,447 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:16:42,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:16:42,448 INFO L85 PathProgramCache]: Analyzing trace with hash 89908361, now seen corresponding path program 4 times [2023-12-24 22:16:42,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:16:42,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [454973053] [2023-12-24 22:16:42,448 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 22:16:42,448 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 22:16:42,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:16:42,449 INFO L229 MonitoredProcess]: Starting monitored process 9 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 22:16:42,451 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 (9)] Waiting until timeout for monitored process [2023-12-24 22:16:42,513 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 22:16:42,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:16:42,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 22:16:42,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:16:42,745 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-24 22:16:42,745 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:16:43,768 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-24 22:16:43,768 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:16:43,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [454973053] [2023-12-24 22:16:43,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [454973053] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:16:43,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:16:43,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-24 22:16:43,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126968554] [2023-12-24 22:16:43,769 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:16:43,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-24 22:16:43,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:16:43,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-24 22:16:43,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-12-24 22:16:43,770 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 48 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 47 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:16:49,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:16:49,194 INFO L93 Difference]: Finished difference Result 382 states and 457 transitions. [2023-12-24 22:16:49,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-24 22:16:49,194 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 47 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-12-24 22:16:49,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:16:49,196 INFO L225 Difference]: With dead ends: 382 [2023-12-24 22:16:49,196 INFO L226 Difference]: Without dead ends: 362 [2023-12-24 22:16:49,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2023-12-24 22:16:49,198 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 3785 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 2739 mSolverCounterSat, 569 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3785 SdHoareTripleChecker+Valid, 1911 SdHoareTripleChecker+Invalid, 3308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 569 IncrementalHoareTripleChecker+Valid, 2739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-24 22:16:49,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3785 Valid, 1911 Invalid, 3308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [569 Valid, 2739 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-24 22:16:49,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2023-12-24 22:16:49,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 68. [2023-12-24 22:16:49,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.0895522388059702) internal successors, (73), 67 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:16:49,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2023-12-24 22:16:49,213 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 43 [2023-12-24 22:16:49,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:16:49,214 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2023-12-24 22:16:49,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 47 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:16:49,214 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2023-12-24 22:16:49,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-24 22:16:49,215 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:16:49,215 INFO L195 NwaCegarLoop]: trace histogram [46, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:16:49,220 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 (9)] Ended with exit code 0 [2023-12-24 22:16:49,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /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 22:16:49,416 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:16:49,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:16:49,417 INFO L85 PathProgramCache]: Analyzing trace with hash -975718775, now seen corresponding path program 5 times [2023-12-24 22:16:49,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:16:49,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [349176818] [2023-12-24 22:16:49,417 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 22:16:49,417 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 22:16:49,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:16:49,418 INFO L229 MonitoredProcess]: Starting monitored process 10 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 22:16:49,426 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 (10)] Waiting until timeout for monitored process [2023-12-24 22:16:49,965 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2023-12-24 22:16:49,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:16:49,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 22:16:49,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:16:50,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-12-24 22:16:50,034 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:16:50,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-12-24 22:16:50,139 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:16:50,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [349176818] [2023-12-24 22:16:50,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [349176818] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:16:50,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:16:50,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-24 22:16:50,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457342865] [2023-12-24 22:16:50,140 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:16:50,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 22:16:50,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:16:50,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 22:16:50,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-12-24 22:16:50,141 INFO L87 Difference]: Start difference. First operand 68 states and 73 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:16:50,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:16:50,435 INFO L93 Difference]: Finished difference Result 100 states and 116 transitions. [2023-12-24 22:16:50,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-24 22:16:50,435 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-12-24 22:16:50,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:16:50,436 INFO L225 Difference]: With dead ends: 100 [2023-12-24 22:16:50,436 INFO L226 Difference]: Without dead ends: 86 [2023-12-24 22:16:50,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=379, Unknown=0, NotChecked=0, Total=552 [2023-12-24 22:16:50,437 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 56 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:16:50,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 68 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 22:16:50,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-12-24 22:16:50,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2023-12-24 22:16:50,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.1411764705882352) internal successors, (97), 85 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:16:50,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 97 transitions. [2023-12-24 22:16:50,445 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 97 transitions. Word has length 67 [2023-12-24 22:16:50,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:16:50,445 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 97 transitions. [2023-12-24 22:16:50,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:16:50,446 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 97 transitions. [2023-12-24 22:16:50,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-24 22:16:50,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:16:50,446 INFO L195 NwaCegarLoop]: trace histogram [46, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:16:50,456 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 (10)] Forceful destruction successful, exit code 0 [2023-12-24 22:16:50,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /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 22:16:50,653 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:16:50,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:16:50,654 INFO L85 PathProgramCache]: Analyzing trace with hash 872513033, now seen corresponding path program 6 times [2023-12-24 22:16:50,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:16:50,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [754210300] [2023-12-24 22:16:50,654 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 22:16:50,654 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 22:16:50,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:16:50,656 INFO L229 MonitoredProcess]: Starting monitored process 11 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 22:16:50,657 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 (11)] Waiting until timeout for monitored process [2023-12-24 22:16:51,193 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2023-12-24 22:16:51,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:16:51,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 22:16:51,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:16:51,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-12-24 22:16:51,341 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:16:51,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-12-24 22:16:51,851 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:16:51,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [754210300] [2023-12-24 22:16:51,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [754210300] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:16:51,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:16:51,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 29 [2023-12-24 22:16:51,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779724278] [2023-12-24 22:16:51,852 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:16:51,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-24 22:16:51,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:16:51,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-24 22:16:51,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=597, Unknown=0, NotChecked=0, Total=812 [2023-12-24 22:16:51,853 INFO L87 Difference]: Start difference. First operand 86 states and 97 transitions. Second operand has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 29 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:16:53,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:16:53,833 INFO L93 Difference]: Finished difference Result 154 states and 191 transitions. [2023-12-24 22:16:53,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-24 22:16:53,834 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 29 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-12-24 22:16:53,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:16:53,835 INFO L225 Difference]: With dead ends: 154 [2023-12-24 22:16:53,835 INFO L226 Difference]: Without dead ends: 123 [2023-12-24 22:16:53,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=794, Invalid=1858, Unknown=0, NotChecked=0, Total=2652 [2023-12-24 22:16:53,836 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 278 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 22:16:53,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 191 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 22:16:53,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-12-24 22:16:53,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 122. [2023-12-24 22:16:53,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.1900826446280992) internal successors, (144), 121 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:16:53,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 144 transitions. [2023-12-24 22:16:53,846 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 144 transitions. Word has length 85 [2023-12-24 22:16:53,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:16:53,846 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 144 transitions. [2023-12-24 22:16:53,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 29 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:16:53,846 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 144 transitions. [2023-12-24 22:16:53,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-24 22:16:53,847 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:16:53,847 INFO L195 NwaCegarLoop]: trace histogram [46, 23, 23, 22, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:16:53,853 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 (11)] Forceful destruction successful, exit code 0 [2023-12-24 22:16:54,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /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 22:16:54,052 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:16:54,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:16:54,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1475056375, now seen corresponding path program 7 times [2023-12-24 22:16:54,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:16:54,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1323365555] [2023-12-24 22:16:54,053 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 22:16:54,053 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 22:16:54,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:16:54,054 INFO L229 MonitoredProcess]: Starting monitored process 12 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 22:16:54,055 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 (12)] Waiting until timeout for monitored process [2023-12-24 22:16:54,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:16:54,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-24 22:16:54,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:16:55,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1840 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2023-12-24 22:16:55,049 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:16:58,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1840 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2023-12-24 22:16:58,927 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:16:58,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1323365555] [2023-12-24 22:16:58,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1323365555] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:16:58,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:16:58,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2023-12-24 22:16:58,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393609682] [2023-12-24 22:16:58,928 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:16:58,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-24 22:16:58,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:16:58,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-24 22:16:58,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2023-12-24 22:16:58,931 INFO L87 Difference]: Start difference. First operand 122 states and 144 transitions. Second operand has 96 states, 96 states have (on average 1.0833333333333333) internal successors, (104), 95 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:17:34,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:17:34,390 INFO L93 Difference]: Finished difference Result 748 states and 911 transitions. [2023-12-24 22:17:34,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-24 22:17:34,391 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.0833333333333333) internal successors, (104), 95 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2023-12-24 22:17:34,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:17:34,393 INFO L225 Difference]: With dead ends: 748 [2023-12-24 22:17:34,393 INFO L226 Difference]: Without dead ends: 674 [2023-12-24 22:17:34,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 33.7s TimeCoverageRelationStatistics Valid=6814, Invalid=13208, Unknown=0, NotChecked=0, Total=20022 [2023-12-24 22:17:34,397 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 14202 mSDsluCounter, 5708 mSDsCounter, 0 mSdLazyCounter, 10390 mSolverCounterSat, 2382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14202 SdHoareTripleChecker+Valid, 5830 SdHoareTripleChecker+Invalid, 12772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2382 IncrementalHoareTripleChecker+Valid, 10390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-24 22:17:34,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14202 Valid, 5830 Invalid, 12772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2382 Valid, 10390 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-12-24 22:17:34,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2023-12-24 22:17:34,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 170. [2023-12-24 22:17:34,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.136094674556213) internal successors, (192), 169 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:17:34,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 192 transitions. [2023-12-24 22:17:34,408 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 192 transitions. Word has length 121 [2023-12-24 22:17:34,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:17:34,408 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 192 transitions. [2023-12-24 22:17:34,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.0833333333333333) internal successors, (104), 95 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:17:34,408 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 192 transitions. [2023-12-24 22:17:34,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-24 22:17:34,410 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:17:34,410 INFO L195 NwaCegarLoop]: trace histogram [94, 23, 23, 22, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:17:34,415 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 (12)] Forceful destruction successful, exit code 0 [2023-12-24 22:17:34,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /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 22:17:34,615 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:17:34,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:17:34,615 INFO L85 PathProgramCache]: Analyzing trace with hash -496561911, now seen corresponding path program 8 times [2023-12-24 22:17:34,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:17:34,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1482760275] [2023-12-24 22:17:34,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 22:17:34,616 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 22:17:34,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:17:34,617 INFO L229 MonitoredProcess]: Starting monitored process 13 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 22:17:34,618 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 (13)] Waiting until timeout for monitored process [2023-12-24 22:17:34,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 22:17:34,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:17:34,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 96 conjunts are in the unsatisfiable core [2023-12-24 22:17:34,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:17:38,113 INFO L134 CoverageAnalysis]: Checked inductivity of 5224 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2023-12-24 22:17:38,113 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:17:53,498 INFO L134 CoverageAnalysis]: Checked inductivity of 5224 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2023-12-24 22:17:53,499 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:17:53,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1482760275] [2023-12-24 22:17:53,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1482760275] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:17:53,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:17:53,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 191 [2023-12-24 22:17:53,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748488603] [2023-12-24 22:17:53,499 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:17:53,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2023-12-24 22:17:53,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:17:53,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2023-12-24 22:17:53,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9406, Invalid=27266, Unknown=0, NotChecked=0, Total=36672 [2023-12-24 22:17:53,506 INFO L87 Difference]: Start difference. First operand 170 states and 192 transitions. Second operand has 192 states, 192 states have (on average 1.0416666666666667) internal successors, (200), 191 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:22:54,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:22:54,299 INFO L93 Difference]: Finished difference Result 1516 states and 1823 transitions. [2023-12-24 22:22:54,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2023-12-24 22:22:54,300 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 192 states have (on average 1.0416666666666667) internal successors, (200), 191 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2023-12-24 22:22:54,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:22:54,303 INFO L225 Difference]: With dead ends: 1516 [2023-12-24 22:22:54,304 INFO L226 Difference]: Without dead ends: 1442 [2023-12-24 22:22:54,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4371 ImplicationChecksByTransitivity, 292.7s TimeCoverageRelationStatistics Valid=27454, Invalid=54056, Unknown=0, NotChecked=0, Total=81510 [2023-12-24 22:22:54,310 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 58185 mSDsluCounter, 29708 mSDsCounter, 0 mSdLazyCounter, 43796 mSolverCounterSat, 9016 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58185 SdHoareTripleChecker+Valid, 30022 SdHoareTripleChecker+Invalid, 52812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 9016 IncrementalHoareTripleChecker+Valid, 43796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.7s IncrementalHoareTripleChecker+Time [2023-12-24 22:22:54,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58185 Valid, 30022 Invalid, 52812 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [9016 Valid, 43796 Invalid, 0 Unknown, 0 Unchecked, 22.7s Time] [2023-12-24 22:22:54,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2023-12-24 22:22:54,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 266. [2023-12-24 22:22:54,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 1.0867924528301887) internal successors, (288), 265 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:22:54,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 288 transitions. [2023-12-24 22:22:54,327 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 288 transitions. Word has length 169 [2023-12-24 22:22:54,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:22:54,327 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 288 transitions. [2023-12-24 22:22:54,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 192 states have (on average 1.0416666666666667) internal successors, (200), 191 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:22:54,328 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 288 transitions. [2023-12-24 22:22:54,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2023-12-24 22:22:54,330 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:22:54,330 INFO L195 NwaCegarLoop]: trace histogram [190, 23, 23, 22, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:22:54,339 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 (13)] Forceful destruction successful, exit code 0 [2023-12-24 22:22:54,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /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 22:22:54,532 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:22:54,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:22:54,533 INFO L85 PathProgramCache]: Analyzing trace with hash -687580919, now seen corresponding path program 9 times [2023-12-24 22:22:54,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:22:54,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1195936518] [2023-12-24 22:22:54,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 22:22:54,533 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 22:22:54,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:22:54,534 INFO L229 MonitoredProcess]: Starting monitored process 14 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 22:22:54,538 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 (14)] Waiting until timeout for monitored process [2023-12-24 22:22:55,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2023-12-24 22:22:55,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:22:55,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-24 22:22:55,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:22:55,724 INFO L134 CoverageAnalysis]: Checked inductivity of 18904 backedges. 0 proven. 759 refuted. 0 times theorem prover too weak. 18145 trivial. 0 not checked. [2023-12-24 22:22:55,724 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:22:57,122 INFO L134 CoverageAnalysis]: Checked inductivity of 18904 backedges. 0 proven. 759 refuted. 0 times theorem prover too weak. 18145 trivial. 0 not checked. [2023-12-24 22:22:57,123 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:22:57,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1195936518] [2023-12-24 22:22:57,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1195936518] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:22:57,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:22:57,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 28] total 53 [2023-12-24 22:22:57,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33954854] [2023-12-24 22:22:57,123 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:22:57,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-24 22:22:57,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:22:57,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-24 22:22:57,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=707, Invalid=2049, Unknown=0, NotChecked=0, Total=2756 [2023-12-24 22:22:57,124 INFO L87 Difference]: Start difference. First operand 266 states and 288 transitions. Second operand has 53 states, 53 states have (on average 2.792452830188679) internal successors, (148), 53 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:23:08,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:23:08,531 INFO L93 Difference]: Finished difference Result 394 states and 466 transitions. [2023-12-24 22:23:08,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-12-24 22:23:08,531 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.792452830188679) internal successors, (148), 53 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 265 [2023-12-24 22:23:08,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:23:08,532 INFO L225 Difference]: With dead ends: 394 [2023-12-24 22:23:08,532 INFO L226 Difference]: Without dead ends: 339 [2023-12-24 22:23:08,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 499 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1226 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=2876, Invalid=7024, Unknown=0, NotChecked=0, Total=9900 [2023-12-24 22:23:08,533 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 1143 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 2628 mSolverCounterSat, 707 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 3335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 707 IncrementalHoareTripleChecker+Valid, 2628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-24 22:23:08,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1143 Valid, 635 Invalid, 3335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [707 Valid, 2628 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-24 22:23:08,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2023-12-24 22:23:08,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 338. [2023-12-24 22:23:08,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 1.1364985163204748) internal successors, (383), 337 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:23:08,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 383 transitions. [2023-12-24 22:23:08,547 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 383 transitions. Word has length 265 [2023-12-24 22:23:08,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:23:08,548 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 383 transitions. [2023-12-24 22:23:08,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.792452830188679) internal successors, (148), 53 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:23:08,548 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 383 transitions. [2023-12-24 22:23:08,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2023-12-24 22:23:08,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:23:08,551 INFO L195 NwaCegarLoop]: trace histogram [190, 47, 47, 46, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:23:08,564 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 (14)] Forceful destruction successful, exit code 0 [2023-12-24 22:23:08,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /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 22:23:08,758 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:23:08,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:23:08,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1228650249, now seen corresponding path program 10 times [2023-12-24 22:23:08,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:23:08,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1105470001] [2023-12-24 22:23:08,759 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 22:23:08,759 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 22:23:08,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:23:08,761 INFO L229 MonitoredProcess]: Starting monitored process 15 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 22:23:08,761 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 (15)] Waiting until timeout for monitored process [2023-12-24 22:23:09,227 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 22:23:09,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:23:09,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 192 conjunts are in the unsatisfiable core [2023-12-24 22:23:09,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:23:21,815 INFO L134 CoverageAnalysis]: Checked inductivity of 21388 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 3243 trivial. 0 not checked. [2023-12-24 22:23:21,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:24:24,934 INFO L134 CoverageAnalysis]: Checked inductivity of 21388 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 3243 trivial. 0 not checked. [2023-12-24 22:24:24,934 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:24:24,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1105470001] [2023-12-24 22:24:24,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1105470001] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:24:24,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:24:24,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192] total 383 [2023-12-24 22:24:24,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78650625] [2023-12-24 22:24:24,935 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:24:24,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2023-12-24 22:24:24,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:24:24,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2023-12-24 22:24:24,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37246, Invalid=109826, Unknown=0, NotChecked=0, Total=147072 [2023-12-24 22:24:24,945 INFO L87 Difference]: Start difference. First operand 338 states and 383 transitions. Second operand has 384 states, 384 states have (on average 1.0208333333333333) internal successors, (392), 383 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:25:06,009 WARN L293 SmtUtils]: Spent 7.30s on a formula simplification. DAG size of input: 574 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:25:26,790 WARN L293 SmtUtils]: Spent 6.69s on a formula simplification. DAG size of input: 571 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:25:47,598 WARN L293 SmtUtils]: Spent 6.98s on a formula simplification. DAG size of input: 568 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:26:09,586 WARN L293 SmtUtils]: Spent 7.30s on a formula simplification. DAG size of input: 565 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:26:33,404 WARN L293 SmtUtils]: Spent 7.83s on a formula simplification. DAG size of input: 562 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:26:57,239 WARN L293 SmtUtils]: Spent 7.46s on a formula simplification. DAG size of input: 559 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:27:21,494 WARN L293 SmtUtils]: Spent 7.24s on a formula simplification. DAG size of input: 556 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:27:44,591 WARN L293 SmtUtils]: Spent 6.96s on a formula simplification. DAG size of input: 553 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:28:07,795 WARN L293 SmtUtils]: Spent 6.98s on a formula simplification. DAG size of input: 550 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:28:30,925 WARN L293 SmtUtils]: Spent 6.56s on a formula simplification. DAG size of input: 547 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:28:53,963 WARN L293 SmtUtils]: Spent 6.60s on a formula simplification. DAG size of input: 544 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:29:17,094 WARN L293 SmtUtils]: Spent 6.54s on a formula simplification. DAG size of input: 541 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:29:40,859 WARN L293 SmtUtils]: Spent 6.75s on a formula simplification. DAG size of input: 538 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:30:05,061 WARN L293 SmtUtils]: Spent 6.50s on a formula simplification. DAG size of input: 535 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:30:29,752 WARN L293 SmtUtils]: Spent 6.41s on a formula simplification. DAG size of input: 532 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:30:52,792 WARN L293 SmtUtils]: Spent 5.92s on a formula simplification. DAG size of input: 529 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-24 22:31:04,942 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 (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 22:31:04,961 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 22:31:04,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2023-12-24 22:31:04,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 689 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 398 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 442.3s TimeCoverageRelationStatistics Valid=43390, Invalid=116210, Unknown=0, NotChecked=0, Total=159600 [2023-12-24 22:31:04,987 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36689 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 36690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2023-12-24 22:31:04,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 36690 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 36689 Invalid, 0 Unknown, 0 Unchecked, 18.2s Time] [2023-12-24 22:31:04,988 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 22:31:05,001 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 (15)] Forceful destruction successful, exit code 0 [2023-12-24 22:31:05,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /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 22:31:05,196 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (338states) and FLOYD_HOARE automaton (currently 209 states, 384 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 400 known predicates. [2023-12-24 22:31:05,200 INFO L445 BasicCegarLoop]: Path program histogram: [10, 2, 1, 1] [2023-12-24 22:31:05,201 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 22:31:05,202 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 10:31:05 BoogieIcfgContainer [2023-12-24 22:31:05,202 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 22:31:05,203 INFO L158 Benchmark]: Toolchain (without parser) took 867563.79ms. Allocated memory was 177.2MB in the beginning and 283.1MB in the end (delta: 105.9MB). Free memory was 136.3MB in the beginning and 157.1MB in the end (delta: -20.8MB). Peak memory consumption was 211.3MB. Max. memory is 8.0GB. [2023-12-24 22:31:05,203 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 177.2MB. Free memory is still 127.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 22:31:05,203 INFO L158 Benchmark]: CACSL2BoogieTranslator took 172.92ms. Allocated memory is still 177.2MB. Free memory was 136.0MB in the beginning and 124.9MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-24 22:31:05,203 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.44ms. Allocated memory is still 177.2MB. Free memory was 124.9MB in the beginning and 123.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-24 22:31:05,203 INFO L158 Benchmark]: Boogie Preprocessor took 35.37ms. Allocated memory is still 177.2MB. Free memory was 123.4MB in the beginning and 121.6MB in the end (delta: 1.8MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-24 22:31:05,203 INFO L158 Benchmark]: RCFGBuilder took 245.78ms. Allocated memory is still 177.2MB. Free memory was 121.3MB in the beginning and 109.5MB in the end (delta: 11.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-24 22:31:05,203 INFO L158 Benchmark]: TraceAbstraction took 867084.55ms. Allocated memory was 177.2MB in the beginning and 283.1MB in the end (delta: 105.9MB). Free memory was 108.7MB in the beginning and 157.1MB in the end (delta: -48.4MB). Peak memory consumption was 183.0MB. Max. memory is 8.0GB. [2023-12-24 22:31:05,204 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 177.2MB. Free memory is still 127.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 172.92ms. Allocated memory is still 177.2MB. Free memory was 136.0MB in the beginning and 124.9MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.44ms. Allocated memory is still 177.2MB. Free memory was 124.9MB in the beginning and 123.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.37ms. Allocated memory is still 177.2MB. Free memory was 123.4MB in the beginning and 121.6MB in the end (delta: 1.8MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 245.78ms. Allocated memory is still 177.2MB. Free memory was 121.3MB in the beginning and 109.5MB in the end (delta: 11.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 867084.55ms. Allocated memory was 177.2MB in the beginning and 283.1MB in the end (delta: 105.9MB). Free memory was 108.7MB in the beginning and 157.1MB in the end (delta: -48.4MB). Peak memory consumption was 183.0MB. 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: 15]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 15). Cancelled while NwaCegarLoop was constructing difference of abstraction (338states) and FLOYD_HOARE automaton (currently 209 states, 384 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 400 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 867.0s, OverallIterations: 14, TraceHistogramMax: 190, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 757.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 79061 SdHoareTripleChecker+Valid, 51.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 79061 mSDsluCounter, 39353 SdHoareTripleChecker+Invalid, 44.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 38688 mSDsCounter, 13131 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 98171 IncrementalHoareTripleChecker+Invalid, 111302 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13131 mSolverCounterUnsat, 665 mSDtfsCounter, 98171 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2659 GetRequests, 1529 SyntacticMatches, 0 SemanticMatches, 1129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7431 ImplicationChecksByTransitivity, 787.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=338occurred in iteration=13, InterpolantAutomatonStates: 531, 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, 13 MinimizatonAttempts, 2222 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 103.6s InterpolantComputationTime, 1198 NumberOfCodeBlocks, 1022 NumberOfCodeBlocksAsserted, 82 NumberOfCheckSat, 2342 ConstructedInterpolants, 0 QuantifiedInterpolants, 6057 SizeOfPredicates, 10 NumberOfNonLiveVariables, 3709 ConjunctsInSsa, 447 ConjunctsInUnsatCore, 25 InterpolantComputations, 3 PerfectInterpolantSequences, 50724/100658 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