/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/bitvector/byte_add_2-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 21:16:13,815 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 21:16:13,901 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-21 21:16:13,904 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 21:16:13,904 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 21:16:13,917 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 21:16:13,918 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 21:16:13,918 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 21:16:13,918 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 21:16:13,919 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 21:16:13,919 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 21:16:13,919 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 21:16:13,920 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 21:16:13,920 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 21:16:13,920 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 21:16:13,920 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 21:16:13,921 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 21:16:13,921 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 21:16:13,921 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 21:16:13,921 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 21:16:13,922 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 21:16:13,925 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 21:16:13,926 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 21:16:13,926 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 21:16:13,926 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 21:16:13,926 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 21:16:13,926 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 21:16:13,927 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 21:16:13,927 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 21:16:13,927 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 21:16:13,927 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 21:16:13,928 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 21:16:13,928 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 21:16:13,928 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 21:16:13,928 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 21:16:13,928 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 21:16:13,929 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 21:16:13,929 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 21:16:13,929 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 21:16:13,929 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 21:16:13,929 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 21:16:13,933 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 21:16:13,934 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 21:16:13,934 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 21:16:13,934 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 21:16:13,934 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 21:16:13,934 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 21:16:14,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 21:16:14,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 21:16:14,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 21:16:14,140 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 21:16:14,140 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 21:16:14,142 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/byte_add_2-2.i [2023-12-21 21:16:15,190 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 21:16:15,362 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 21:16:15,363 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/byte_add_2-2.i [2023-12-21 21:16:15,372 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e64d15b8/5b894acec68d4e23aceb35ef4335ec13/FLAGf5d24c2a6 [2023-12-21 21:16:15,386 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e64d15b8/5b894acec68d4e23aceb35ef4335ec13 [2023-12-21 21:16:15,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 21:16:15,390 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 21:16:15,392 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 21:16:15,392 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 21:16:15,396 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 21:16:15,396 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:16:15" (1/1) ... [2023-12-21 21:16:15,397 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@572a5559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:16:15, skipping insertion in model container [2023-12-21 21:16:15,397 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:16:15" (1/1) ... [2023-12-21 21:16:15,425 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 21:16:15,523 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/byte_add_2-2.i[1168,1181] [2023-12-21 21:16:15,547 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 21:16:15,557 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 21:16:15,567 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/byte_add_2-2.i[1168,1181] [2023-12-21 21:16:15,581 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 21:16:15,591 INFO L206 MainTranslator]: Completed translation [2023-12-21 21:16:15,591 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:16:15 WrapperNode [2023-12-21 21:16:15,591 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 21:16:15,592 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 21:16:15,592 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 21:16:15,592 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 21:16:15,597 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:16:15" (1/1) ... [2023-12-21 21:16:15,603 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:16:15" (1/1) ... [2023-12-21 21:16:15,618 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 123 [2023-12-21 21:16:15,618 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 21:16:15,619 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 21:16:15,619 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 21:16:15,619 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 21:16:15,625 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:16:15" (1/1) ... [2023-12-21 21:16:15,626 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:16:15" (1/1) ... [2023-12-21 21:16:15,628 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:16:15" (1/1) ... [2023-12-21 21:16:15,635 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-21 21:16:15,635 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:16:15" (1/1) ... [2023-12-21 21:16:15,636 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:16:15" (1/1) ... [2023-12-21 21:16:15,640 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:16:15" (1/1) ... [2023-12-21 21:16:15,643 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:16:15" (1/1) ... [2023-12-21 21:16:15,645 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:16:15" (1/1) ... [2023-12-21 21:16:15,646 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:16:15" (1/1) ... [2023-12-21 21:16:15,647 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 21:16:15,648 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 21:16:15,648 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 21:16:15,648 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 21:16:15,649 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:16:15" (1/1) ... [2023-12-21 21:16:15,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 21:16:15,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 21:16:15,690 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) [2023-12-21 21:16:15,699 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 [2023-12-21 21:16:15,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 21:16:15,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 21:16:15,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 21:16:15,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 21:16:15,775 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 21:16:15,778 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 21:16:16,015 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 21:16:16,047 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 21:16:16,048 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-21 21:16:16,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:16:16 BoogieIcfgContainer [2023-12-21 21:16:16,049 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 21:16:16,050 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 21:16:16,050 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 21:16:16,052 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 21:16:16,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 09:16:15" (1/3) ... [2023-12-21 21:16:16,053 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c13cc5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:16:16, skipping insertion in model container [2023-12-21 21:16:16,053 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:16:15" (2/3) ... [2023-12-21 21:16:16,053 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c13cc5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:16:16, skipping insertion in model container [2023-12-21 21:16:16,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:16:16" (3/3) ... [2023-12-21 21:16:16,055 INFO L112 eAbstractionObserver]: Analyzing ICFG byte_add_2-2.i [2023-12-21 21:16:16,067 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 21:16:16,067 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 21:16:16,104 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 21:16:16,108 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;@248b23b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 21:16:16,108 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 21:16:16,112 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 37 states have internal predecessors, (67), 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) [2023-12-21 21:16:16,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-21 21:16:16,116 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:16:16,117 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:16:16,117 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:16:16,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:16:16,122 INFO L85 PathProgramCache]: Analyzing trace with hash 459643034, now seen corresponding path program 1 times [2023-12-21 21:16:16,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:16:16,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463978085] [2023-12-21 21:16:16,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:16:16,131 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 [2023-12-21 21:16:16,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:16:16,133 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) [2023-12-21 21:16:16,172 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 [2023-12-21 21:16:16,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:16:16,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 21:16:16,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:16:16,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:16:16,209 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:16:16,209 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:16:16,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [463978085] [2023-12-21 21:16:16,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [463978085] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:16:16,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:16:16,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 21:16:16,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143976100] [2023-12-21 21:16:16,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:16:16,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 21:16:16,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:16:16,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 21:16:16,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 21:16:16,242 INFO L87 Difference]: Start difference. First operand has 38 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 37 states have internal predecessors, (67), 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 5.0) internal successors, (10), 2 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) [2023-12-21 21:16:16,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:16:16,264 INFO L93 Difference]: Finished difference Result 50 states and 85 transitions. [2023-12-21 21:16:16,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 21:16:16,266 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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 10 [2023-12-21 21:16:16,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:16:16,273 INFO L225 Difference]: With dead ends: 50 [2023-12-21 21:16:16,273 INFO L226 Difference]: Without dead ends: 36 [2023-12-21 21:16:16,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 21:16:16,277 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:16:16,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:16:16,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-21 21:16:16,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-12-21 21:16:16,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.7714285714285714) internal successors, (62), 35 states have internal predecessors, (62), 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) [2023-12-21 21:16:16,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 62 transitions. [2023-12-21 21:16:16,299 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 62 transitions. Word has length 10 [2023-12-21 21:16:16,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:16:16,300 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 62 transitions. [2023-12-21 21:16:16,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2023-12-21 21:16:16,301 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 62 transitions. [2023-12-21 21:16:16,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-21 21:16:16,303 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:16:16,303 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:16:16,306 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 [2023-12-21 21:16:16,507 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 [2023-12-21 21:16:16,508 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:16:16,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:16:16,509 INFO L85 PathProgramCache]: Analyzing trace with hash 371044600, now seen corresponding path program 1 times [2023-12-21 21:16:16,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:16:16,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [240043687] [2023-12-21 21:16:16,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:16:16,510 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 [2023-12-21 21:16:16,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:16:16,511 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) [2023-12-21 21:16:16,512 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 [2023-12-21 21:16:16,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:16:16,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 21:16:16,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:16:16,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:16:16,656 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:16:16,656 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:16:16,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [240043687] [2023-12-21 21:16:16,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [240043687] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:16:16,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:16:16,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:16:16,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312598627] [2023-12-21 21:16:16,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:16:16,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:16:16,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:16:16,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:16:16,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:16:16,664 INFO L87 Difference]: Start difference. First operand 36 states and 62 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) [2023-12-21 21:16:16,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:16:16,786 INFO L93 Difference]: Finished difference Result 109 states and 195 transitions. [2023-12-21 21:16:16,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:16:16,787 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 10 [2023-12-21 21:16:16,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:16:16,788 INFO L225 Difference]: With dead ends: 109 [2023-12-21 21:16:16,788 INFO L226 Difference]: Without dead ends: 82 [2023-12-21 21:16:16,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:16:16,789 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 88 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:16:16,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 122 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:16:16,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-12-21 21:16:16,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2023-12-21 21:16:16,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.641025641025641) internal successors, (128), 78 states have internal predecessors, (128), 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) [2023-12-21 21:16:16,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 128 transitions. [2023-12-21 21:16:16,796 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 128 transitions. Word has length 10 [2023-12-21 21:16:16,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:16:16,797 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 128 transitions. [2023-12-21 21:16:16,797 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) [2023-12-21 21:16:16,797 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 128 transitions. [2023-12-21 21:16:16,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-21 21:16:16,797 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:16:16,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:16:16,802 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-21 21:16:16,999 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 [2023-12-21 21:16:16,999 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:16:17,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:16:17,000 INFO L85 PathProgramCache]: Analyzing trace with hash -450690481, now seen corresponding path program 1 times [2023-12-21 21:16:17,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:16:17,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305665710] [2023-12-21 21:16:17,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:16:17,001 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 [2023-12-21 21:16:17,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:16:17,002 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) [2023-12-21 21:16:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:16:17,033 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 [2023-12-21 21:16:17,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 21:16:17,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:16:17,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:16:17,068 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:16:17,068 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:16:17,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305665710] [2023-12-21 21:16:17,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1305665710] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:16:17,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:16:17,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 21:16:17,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913343551] [2023-12-21 21:16:17,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:16:17,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:16:17,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:16:17,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:16:17,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:16:17,070 INFO L87 Difference]: Start difference. First operand 79 states and 128 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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) [2023-12-21 21:16:17,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:16:17,082 INFO L93 Difference]: Finished difference Result 83 states and 131 transitions. [2023-12-21 21:16:17,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:16:17,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2023-12-21 21:16:17,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:16:17,083 INFO L225 Difference]: With dead ends: 83 [2023-12-21 21:16:17,083 INFO L226 Difference]: Without dead ends: 53 [2023-12-21 21:16:17,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:16:17,084 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 51 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:16:17,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 55 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:16:17,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-12-21 21:16:17,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2023-12-21 21:16:17,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.5) internal successors, (78), 52 states have internal predecessors, (78), 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) [2023-12-21 21:16:17,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 78 transitions. [2023-12-21 21:16:17,088 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 78 transitions. Word has length 11 [2023-12-21 21:16:17,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:16:17,088 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 78 transitions. [2023-12-21 21:16:17,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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) [2023-12-21 21:16:17,088 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 78 transitions. [2023-12-21 21:16:17,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-21 21:16:17,089 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:16:17,089 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:16:17,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-21 21:16:17,291 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 [2023-12-21 21:16:17,291 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:16:17,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:16:17,292 INFO L85 PathProgramCache]: Analyzing trace with hash -171126915, now seen corresponding path program 1 times [2023-12-21 21:16:17,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:16:17,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852678667] [2023-12-21 21:16:17,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:16:17,293 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 [2023-12-21 21:16:17,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:16:17,294 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) [2023-12-21 21:16:17,317 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 [2023-12-21 21:16:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:16:17,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 21:16:17,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:16:17,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:16:17,346 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:16:17,346 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:16:17,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852678667] [2023-12-21 21:16:17,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852678667] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:16:17,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:16:17,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:16:17,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497005903] [2023-12-21 21:16:17,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:16:17,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:16:17,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:16:17,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:16:17,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:16:17,347 INFO L87 Difference]: Start difference. First operand 53 states and 78 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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) [2023-12-21 21:16:17,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:16:17,416 INFO L93 Difference]: Finished difference Result 144 states and 213 transitions. [2023-12-21 21:16:17,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:16:17,416 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2023-12-21 21:16:17,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:16:17,417 INFO L225 Difference]: With dead ends: 144 [2023-12-21 21:16:17,417 INFO L226 Difference]: Without dead ends: 101 [2023-12-21 21:16:17,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:16:17,418 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 84 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:16:17,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 122 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:16:17,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-12-21 21:16:17,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 58. [2023-12-21 21:16:17,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.456140350877193) internal successors, (83), 57 states have internal predecessors, (83), 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) [2023-12-21 21:16:17,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 83 transitions. [2023-12-21 21:16:17,423 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 83 transitions. Word has length 23 [2023-12-21 21:16:17,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:16:17,423 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 83 transitions. [2023-12-21 21:16:17,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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) [2023-12-21 21:16:17,424 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 83 transitions. [2023-12-21 21:16:17,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-21 21:16:17,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:16:17,424 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:16:17,429 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 [2023-12-21 21:16:17,626 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 [2023-12-21 21:16:17,626 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:16:17,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:16:17,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1205485431, now seen corresponding path program 1 times [2023-12-21 21:16:17,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:16:17,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848428452] [2023-12-21 21:16:17,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:16:17,627 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 [2023-12-21 21:16:17,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:16:17,629 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) [2023-12-21 21:16:17,630 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 [2023-12-21 21:16:17,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:16:17,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:16:17,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:16:17,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:16:17,681 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:16:17,681 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:16:17,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1848428452] [2023-12-21 21:16:17,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1848428452] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:16:17,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:16:17,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:16:17,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640585081] [2023-12-21 21:16:17,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:16:17,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:16:17,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:16:17,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:16:17,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:16:17,682 INFO L87 Difference]: Start difference. First operand 58 states and 83 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 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) [2023-12-21 21:16:17,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:16:17,781 INFO L93 Difference]: Finished difference Result 190 states and 281 transitions. [2023-12-21 21:16:17,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:16:17,781 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 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 24 [2023-12-21 21:16:17,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:16:17,782 INFO L225 Difference]: With dead ends: 190 [2023-12-21 21:16:17,782 INFO L226 Difference]: Without dead ends: 147 [2023-12-21 21:16:17,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:16:17,783 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 132 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:16:17,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 265 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:16:17,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-12-21 21:16:17,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 58. [2023-12-21 21:16:17,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.456140350877193) internal successors, (83), 57 states have internal predecessors, (83), 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) [2023-12-21 21:16:17,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 83 transitions. [2023-12-21 21:16:17,789 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 83 transitions. Word has length 24 [2023-12-21 21:16:17,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:16:17,789 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 83 transitions. [2023-12-21 21:16:17,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 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) [2023-12-21 21:16:17,789 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 83 transitions. [2023-12-21 21:16:17,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-21 21:16:17,789 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:16:17,789 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:16:17,791 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 [2023-12-21 21:16:17,991 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 [2023-12-21 21:16:17,992 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:16:17,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:16:17,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1409794344, now seen corresponding path program 1 times [2023-12-21 21:16:17,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:16:17,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [7610692] [2023-12-21 21:16:17,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:16:17,993 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 [2023-12-21 21:16:17,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:16:17,994 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) [2023-12-21 21:16:17,995 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 [2023-12-21 21:16:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:16:18,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 21:16:18,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:16:18,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:16:18,058 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:16:18,058 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:16:18,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [7610692] [2023-12-21 21:16:18,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [7610692] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:16:18,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:16:18,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 21:16:18,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423098462] [2023-12-21 21:16:18,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:16:18,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 21:16:18,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:16:18,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 21:16:18,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 21:16:18,060 INFO L87 Difference]: Start difference. First operand 58 states and 83 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 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) [2023-12-21 21:16:18,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:16:18,172 INFO L93 Difference]: Finished difference Result 233 states and 343 transitions. [2023-12-21 21:16:18,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 21:16:18,173 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 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 25 [2023-12-21 21:16:18,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:16:18,174 INFO L225 Difference]: With dead ends: 233 [2023-12-21 21:16:18,174 INFO L226 Difference]: Without dead ends: 190 [2023-12-21 21:16:18,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 21:16:18,175 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 220 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:16:18,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 626 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:16:18,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-12-21 21:16:18,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 90. [2023-12-21 21:16:18,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.4382022471910112) internal successors, (128), 89 states have internal predecessors, (128), 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) [2023-12-21 21:16:18,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 128 transitions. [2023-12-21 21:16:18,195 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 128 transitions. Word has length 25 [2023-12-21 21:16:18,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:16:18,195 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 128 transitions. [2023-12-21 21:16:18,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 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) [2023-12-21 21:16:18,195 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 128 transitions. [2023-12-21 21:16:18,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-21 21:16:18,196 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:16:18,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:16:18,200 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 [2023-12-21 21:16:18,400 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 [2023-12-21 21:16:18,401 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:16:18,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:16:18,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1628649062, now seen corresponding path program 1 times [2023-12-21 21:16:18,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:16:18,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1219820840] [2023-12-21 21:16:18,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:16:18,402 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 [2023-12-21 21:16:18,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:16:18,403 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) [2023-12-21 21:16:18,408 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 [2023-12-21 21:16:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:16:18,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 21:16:18,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:16:18,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:16:18,485 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:16:18,485 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:16:18,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1219820840] [2023-12-21 21:16:18,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1219820840] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:16:18,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:16:18,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 21:16:18,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608581448] [2023-12-21 21:16:18,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:16:18,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 21:16:18,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:16:18,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 21:16:18,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:16:18,487 INFO L87 Difference]: Start difference. First operand 90 states and 128 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 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) [2023-12-21 21:16:18,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:16:18,671 INFO L93 Difference]: Finished difference Result 232 states and 340 transitions. [2023-12-21 21:16:18,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 21:16:18,671 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 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 25 [2023-12-21 21:16:18,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:16:18,672 INFO L225 Difference]: With dead ends: 232 [2023-12-21 21:16:18,672 INFO L226 Difference]: Without dead ends: 189 [2023-12-21 21:16:18,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:16:18,674 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 157 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:16:18,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 367 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 21:16:18,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-12-21 21:16:18,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 85. [2023-12-21 21:16:18,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.4523809523809523) internal successors, (122), 84 states have internal predecessors, (122), 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) [2023-12-21 21:16:18,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 122 transitions. [2023-12-21 21:16:18,690 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 122 transitions. Word has length 25 [2023-12-21 21:16:18,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:16:18,690 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 122 transitions. [2023-12-21 21:16:18,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 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) [2023-12-21 21:16:18,690 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 122 transitions. [2023-12-21 21:16:18,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-21 21:16:18,694 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:16:18,694 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:16:18,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-21 21:16:18,896 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 [2023-12-21 21:16:18,897 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:16:18,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:16:18,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1173091825, now seen corresponding path program 1 times [2023-12-21 21:16:18,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:16:18,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1228447822] [2023-12-21 21:16:18,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:16:18,898 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 [2023-12-21 21:16:18,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:16:18,899 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) [2023-12-21 21:16:18,900 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 [2023-12-21 21:16:18,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:16:18,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:16:18,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:16:18,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:16:18,988 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:16:18,988 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:16:18,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1228447822] [2023-12-21 21:16:18,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1228447822] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:16:18,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:16:18,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 21:16:18,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736128610] [2023-12-21 21:16:18,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:16:18,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:16:18,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:16:18,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:16:18,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:16:18,989 INFO L87 Difference]: Start difference. First operand 85 states and 122 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2023-12-21 21:16:19,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:16:19,081 INFO L93 Difference]: Finished difference Result 196 states and 300 transitions. [2023-12-21 21:16:19,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:16:19,082 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2023-12-21 21:16:19,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:16:19,082 INFO L225 Difference]: With dead ends: 196 [2023-12-21 21:16:19,083 INFO L226 Difference]: Without dead ends: 125 [2023-12-21 21:16:19,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:16:19,083 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 88 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:16:19,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 42 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:16:19,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-12-21 21:16:19,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 121. [2023-12-21 21:16:19,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.3416666666666666) internal successors, (161), 120 states have internal predecessors, (161), 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) [2023-12-21 21:16:19,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 161 transitions. [2023-12-21 21:16:19,089 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 161 transitions. Word has length 27 [2023-12-21 21:16:19,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:16:19,089 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 161 transitions. [2023-12-21 21:16:19,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2023-12-21 21:16:19,090 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 161 transitions. [2023-12-21 21:16:19,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-21 21:16:19,090 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:16:19,090 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:16:19,095 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 (9)] Forceful destruction successful, exit code 0 [2023-12-21 21:16:19,292 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 [2023-12-21 21:16:19,293 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:16:19,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:16:19,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1358205788, now seen corresponding path program 1 times [2023-12-21 21:16:19,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:16:19,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1929634792] [2023-12-21 21:16:19,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:16:19,294 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 [2023-12-21 21:16:19,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:16:19,295 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) [2023-12-21 21:16:19,295 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 [2023-12-21 21:16:19,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:16:19,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:16:19,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:16:19,378 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:16:19,378 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:16:19,378 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:16:19,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1929634792] [2023-12-21 21:16:19,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1929634792] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:16:19,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:16:19,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:16:19,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837060188] [2023-12-21 21:16:19,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:16:19,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:16:19,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:16:19,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:16:19,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:16:19,379 INFO L87 Difference]: Start difference. First operand 121 states and 161 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 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) [2023-12-21 21:16:19,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:16:19,487 INFO L93 Difference]: Finished difference Result 258 states and 345 transitions. [2023-12-21 21:16:19,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:16:19,487 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 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 40 [2023-12-21 21:16:19,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:16:19,488 INFO L225 Difference]: With dead ends: 258 [2023-12-21 21:16:19,488 INFO L226 Difference]: Without dead ends: 192 [2023-12-21 21:16:19,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:16:19,489 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 69 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:16:19,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 113 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:16:19,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-12-21 21:16:19,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 174. [2023-12-21 21:16:19,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.3410404624277457) internal successors, (232), 173 states have internal predecessors, (232), 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) [2023-12-21 21:16:19,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 232 transitions. [2023-12-21 21:16:19,496 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 232 transitions. Word has length 40 [2023-12-21 21:16:19,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:16:19,496 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 232 transitions. [2023-12-21 21:16:19,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 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) [2023-12-21 21:16:19,497 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 232 transitions. [2023-12-21 21:16:19,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-21 21:16:19,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:16:19,497 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:16:19,501 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 (10)] Ended with exit code 0 [2023-12-21 21:16:19,699 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 [2023-12-21 21:16:19,700 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:16:19,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:16:19,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1344319466, now seen corresponding path program 1 times [2023-12-21 21:16:19,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:16:19,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [317342700] [2023-12-21 21:16:19,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:16:19,701 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 [2023-12-21 21:16:19,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:16:19,701 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) [2023-12-21 21:16:19,704 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 [2023-12-21 21:16:19,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:16:19,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 21:16:19,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:16:19,803 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:16:19,803 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:16:19,803 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:16:19,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [317342700] [2023-12-21 21:16:19,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [317342700] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:16:19,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:16:19,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 21:16:19,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559559171] [2023-12-21 21:16:19,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:16:19,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 21:16:19,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:16:19,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 21:16:19,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:16:19,805 INFO L87 Difference]: Start difference. First operand 174 states and 232 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 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) [2023-12-21 21:16:19,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:16:19,948 INFO L93 Difference]: Finished difference Result 327 states and 437 transitions. [2023-12-21 21:16:19,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 21:16:19,948 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 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 41 [2023-12-21 21:16:19,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:16:19,949 INFO L225 Difference]: With dead ends: 327 [2023-12-21 21:16:19,949 INFO L226 Difference]: Without dead ends: 261 [2023-12-21 21:16:19,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:16:19,951 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 112 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:16:19,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 236 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:16:19,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-12-21 21:16:19,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 174. [2023-12-21 21:16:19,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.3410404624277457) internal successors, (232), 173 states have internal predecessors, (232), 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) [2023-12-21 21:16:19,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 232 transitions. [2023-12-21 21:16:19,960 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 232 transitions. Word has length 41 [2023-12-21 21:16:19,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:16:19,960 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 232 transitions. [2023-12-21 21:16:19,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 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) [2023-12-21 21:16:19,960 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 232 transitions. [2023-12-21 21:16:19,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-21 21:16:19,970 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:16:19,972 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:16:19,980 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 [2023-12-21 21:16:20,176 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 [2023-12-21 21:16:20,176 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:16:20,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:16:20,177 INFO L85 PathProgramCache]: Analyzing trace with hash -278747559, now seen corresponding path program 1 times [2023-12-21 21:16:20,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:16:20,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [438508836] [2023-12-21 21:16:20,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:16:20,177 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 [2023-12-21 21:16:20,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:16:20,178 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) [2023-12-21 21:16:20,201 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 [2023-12-21 21:16:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:16:20,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:16:20,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:16:20,283 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:16:20,283 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:16:20,350 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:16:20,351 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:16:20,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [438508836] [2023-12-21 21:16:20,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [438508836] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:16:20,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:16:20,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-21 21:16:20,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733698807] [2023-12-21 21:16:20,351 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:16:20,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 21:16:20,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:16:20,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 21:16:20,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-21 21:16:20,353 INFO L87 Difference]: Start difference. First operand 174 states and 232 transitions. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 9 states have internal predecessors, (74), 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) [2023-12-21 21:16:20,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:16:20,551 INFO L93 Difference]: Finished difference Result 594 states and 821 transitions. [2023-12-21 21:16:20,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 21:16:20,552 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 9 states have internal predecessors, (74), 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 42 [2023-12-21 21:16:20,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:16:20,554 INFO L225 Difference]: With dead ends: 594 [2023-12-21 21:16:20,554 INFO L226 Difference]: Without dead ends: 441 [2023-12-21 21:16:20,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2023-12-21 21:16:20,555 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 333 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:16:20,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 322 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:16:20,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2023-12-21 21:16:20,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 248. [2023-12-21 21:16:20,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.4210526315789473) internal successors, (351), 247 states have internal predecessors, (351), 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) [2023-12-21 21:16:20,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 351 transitions. [2023-12-21 21:16:20,566 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 351 transitions. Word has length 42 [2023-12-21 21:16:20,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:16:20,566 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 351 transitions. [2023-12-21 21:16:20,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 9 states have internal predecessors, (74), 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) [2023-12-21 21:16:20,566 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 351 transitions. [2023-12-21 21:16:20,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-21 21:16:20,567 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:16:20,567 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:16:20,570 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 [2023-12-21 21:16:20,769 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 [2023-12-21 21:16:20,769 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:16:20,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:16:20,770 INFO L85 PathProgramCache]: Analyzing trace with hash 422317019, now seen corresponding path program 1 times [2023-12-21 21:16:20,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:16:20,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1016133391] [2023-12-21 21:16:20,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:16:20,770 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 [2023-12-21 21:16:20,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:16:20,771 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) [2023-12-21 21:16:20,772 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 [2023-12-21 21:16:20,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:16:20,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 21:16:20,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:16:20,879 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:16:20,879 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:16:20,941 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:16:20,941 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:16:20,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1016133391] [2023-12-21 21:16:20,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1016133391] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:16:20,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:16:20,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-21 21:16:20,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228564335] [2023-12-21 21:16:20,941 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:16:20,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 21:16:20,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:16:20,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 21:16:20,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-12-21 21:16:20,943 INFO L87 Difference]: Start difference. First operand 248 states and 351 transitions. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 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) [2023-12-21 21:16:21,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:16:21,198 INFO L93 Difference]: Finished difference Result 781 states and 1238 transitions. [2023-12-21 21:16:21,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 21:16:21,199 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 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 42 [2023-12-21 21:16:21,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:16:21,202 INFO L225 Difference]: With dead ends: 781 [2023-12-21 21:16:21,202 INFO L226 Difference]: Without dead ends: 553 [2023-12-21 21:16:21,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2023-12-21 21:16:21,203 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 259 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:16:21,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 76 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 21:16:21,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2023-12-21 21:16:21,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 470. [2023-12-21 21:16:21,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 469 states have (on average 1.4541577825159915) internal successors, (682), 469 states have internal predecessors, (682), 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) [2023-12-21 21:16:21,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 682 transitions. [2023-12-21 21:16:21,225 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 682 transitions. Word has length 42 [2023-12-21 21:16:21,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:16:21,225 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 682 transitions. [2023-12-21 21:16:21,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 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) [2023-12-21 21:16:21,225 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 682 transitions. [2023-12-21 21:16:21,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-21 21:16:21,226 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:16:21,226 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:16:21,228 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 [2023-12-21 21:16:21,428 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 [2023-12-21 21:16:21,429 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:16:21,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:16:21,429 INFO L85 PathProgramCache]: Analyzing trace with hash -961547971, now seen corresponding path program 1 times [2023-12-21 21:16:21,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:16:21,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1080893266] [2023-12-21 21:16:21,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:16:21,429 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 [2023-12-21 21:16:21,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:16:21,431 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) [2023-12-21 21:16:21,433 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 [2023-12-21 21:16:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:16:21,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:16:21,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:16:21,567 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 66 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 21:16:21,568 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:16:21,614 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 68 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 21:16:21,614 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:16:21,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1080893266] [2023-12-21 21:16:21,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1080893266] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:16:21,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:16:21,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-21 21:16:21,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168929720] [2023-12-21 21:16:21,615 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:16:21,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 21:16:21,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:16:21,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 21:16:21,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-21 21:16:21,616 INFO L87 Difference]: Start difference. First operand 470 states and 682 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 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) [2023-12-21 21:16:21,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:16:21,790 INFO L93 Difference]: Finished difference Result 1203 states and 1667 transitions. [2023-12-21 21:16:21,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 21:16:21,791 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 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 68 [2023-12-21 21:16:21,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:16:21,793 INFO L225 Difference]: With dead ends: 1203 [2023-12-21 21:16:21,793 INFO L226 Difference]: Without dead ends: 754 [2023-12-21 21:16:21,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-21 21:16:21,794 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 221 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:16:21,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 250 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:16:21,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2023-12-21 21:16:21,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 463. [2023-12-21 21:16:21,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 1.406926406926407) internal successors, (650), 462 states have internal predecessors, (650), 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) [2023-12-21 21:16:21,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 650 transitions. [2023-12-21 21:16:21,817 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 650 transitions. Word has length 68 [2023-12-21 21:16:21,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:16:21,817 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 650 transitions. [2023-12-21 21:16:21,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 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) [2023-12-21 21:16:21,817 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 650 transitions. [2023-12-21 21:16:21,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-21 21:16:21,818 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:16:21,818 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:16:21,820 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 (14)] Ended with exit code 0 [2023-12-21 21:16:22,020 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 [2023-12-21 21:16:22,020 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:16:22,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:16:22,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1095561477, now seen corresponding path program 2 times [2023-12-21 21:16:22,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:16:22,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1937721293] [2023-12-21 21:16:22,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 21:16:22,021 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 [2023-12-21 21:16:22,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:16:22,022 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) [2023-12-21 21:16:22,049 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 [2023-12-21 21:16:22,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 21:16:22,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 21:16:22,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-21 21:16:22,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:16:24,414 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:16:24,414 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:16:26,095 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:16:26,095 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:16:26,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1937721293] [2023-12-21 21:16:26,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1937721293] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:16:26,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:16:26,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 41 [2023-12-21 21:16:26,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958303238] [2023-12-21 21:16:26,095 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:16:26,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-21 21:16:26,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:16:26,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-21 21:16:26,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1585, Unknown=0, NotChecked=0, Total=1722 [2023-12-21 21:16:26,097 INFO L87 Difference]: Start difference. First operand 463 states and 650 transitions. Second operand has 42 states, 42 states have (on average 3.2142857142857144) internal successors, (135), 41 states have internal predecessors, (135), 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) [2023-12-21 21:16:34,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:16:34,623 INFO L93 Difference]: Finished difference Result 1608 states and 2172 transitions. [2023-12-21 21:16:34,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-12-21 21:16:34,624 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.2142857142857144) internal successors, (135), 41 states have internal predecessors, (135), 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 68 [2023-12-21 21:16:34,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:16:34,629 INFO L225 Difference]: With dead ends: 1608 [2023-12-21 21:16:34,629 INFO L226 Difference]: Without dead ends: 1495 [2023-12-21 21:16:34,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1994 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=1884, Invalid=9246, Unknown=0, NotChecked=0, Total=11130 [2023-12-21 21:16:34,632 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 2091 mSDsluCounter, 6297 mSDsCounter, 0 mSdLazyCounter, 3703 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2091 SdHoareTripleChecker+Valid, 6652 SdHoareTripleChecker+Invalid, 3782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 3703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-21 21:16:34,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2091 Valid, 6652 Invalid, 3782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 3703 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-21 21:16:34,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2023-12-21 21:16:34,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 728. [2023-12-21 21:16:34,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 727 states have (on average 1.4181568088033012) internal successors, (1031), 727 states have internal predecessors, (1031), 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) [2023-12-21 21:16:34,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1031 transitions. [2023-12-21 21:16:34,684 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1031 transitions. Word has length 68 [2023-12-21 21:16:34,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:16:34,685 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 1031 transitions. [2023-12-21 21:16:34,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.2142857142857144) internal successors, (135), 41 states have internal predecessors, (135), 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) [2023-12-21 21:16:34,686 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1031 transitions. [2023-12-21 21:16:34,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-21 21:16:34,686 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:16:34,687 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:16:34,703 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 (15)] Ended with exit code 0 [2023-12-21 21:16:34,889 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 [2023-12-21 21:16:34,889 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:16:34,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:16:34,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1513225981, now seen corresponding path program 1 times [2023-12-21 21:16:34,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:16:34,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1188322838] [2023-12-21 21:16:34,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:16:34,890 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 [2023-12-21 21:16:34,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:16:34,891 INFO L229 MonitoredProcess]: Starting monitored process 16 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) [2023-12-21 21:16:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:16:34,925 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 (16)] Waiting until timeout for monitored process [2023-12-21 21:16:34,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 21:16:34,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:16:34,980 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-21 21:16:34,980 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:16:34,981 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:16:34,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1188322838] [2023-12-21 21:16:34,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1188322838] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:16:34,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:16:34,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 21:16:34,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833577730] [2023-12-21 21:16:34,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:16:34,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 21:16:34,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:16:34,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 21:16:34,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-21 21:16:34,982 INFO L87 Difference]: Start difference. First operand 728 states and 1031 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 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) [2023-12-21 21:16:35,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:16:35,178 INFO L93 Difference]: Finished difference Result 1166 states and 1643 transitions. [2023-12-21 21:16:35,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 21:16:35,179 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 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 68 [2023-12-21 21:16:35,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:16:35,181 INFO L225 Difference]: With dead ends: 1166 [2023-12-21 21:16:35,181 INFO L226 Difference]: Without dead ends: 971 [2023-12-21 21:16:35,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-21 21:16:35,183 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 184 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:16:35,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 426 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:16:35,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2023-12-21 21:16:35,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 554. [2023-12-21 21:16:35,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 553 states have (on average 1.4086799276672695) internal successors, (779), 553 states have internal predecessors, (779), 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) [2023-12-21 21:16:35,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 779 transitions. [2023-12-21 21:16:35,219 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 779 transitions. Word has length 68 [2023-12-21 21:16:35,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:16:35,219 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 779 transitions. [2023-12-21 21:16:35,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 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) [2023-12-21 21:16:35,219 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 779 transitions. [2023-12-21 21:16:35,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-21 21:16:35,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:16:35,220 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:16:35,224 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 (16)] Forceful destruction successful, exit code 0 [2023-12-21 21:16:35,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /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 [2023-12-21 21:16:35,422 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:16:35,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:16:35,423 INFO L85 PathProgramCache]: Analyzing trace with hash -740647244, now seen corresponding path program 1 times [2023-12-21 21:16:35,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:16:35,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513058621] [2023-12-21 21:16:35,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:16:35,423 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 [2023-12-21 21:16:35,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:16:35,424 INFO L229 MonitoredProcess]: Starting monitored process 17 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) [2023-12-21 21:16:35,425 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 (17)] Waiting until timeout for monitored process [2023-12-21 21:16:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:16:35,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 21:16:35,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:16:35,581 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 63 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 21:16:35,581 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:16:35,658 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 53 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 21:16:35,658 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:16:35,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513058621] [2023-12-21 21:16:35,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [513058621] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:16:35,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:16:35,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-21 21:16:35,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825547784] [2023-12-21 21:16:35,658 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:16:35,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 21:16:35,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:16:35,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 21:16:35,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-12-21 21:16:35,659 INFO L87 Difference]: Start difference. First operand 554 states and 779 transitions. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 9 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) [2023-12-21 21:16:36,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:16:36,205 INFO L93 Difference]: Finished difference Result 1215 states and 1734 transitions. [2023-12-21 21:16:36,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 21:16:36,205 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 9 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 70 [2023-12-21 21:16:36,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:16:36,208 INFO L225 Difference]: With dead ends: 1215 [2023-12-21 21:16:36,208 INFO L226 Difference]: Without dead ends: 1022 [2023-12-21 21:16:36,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2023-12-21 21:16:36,209 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 311 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:16:36,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 143 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:16:36,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2023-12-21 21:16:36,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 866. [2023-12-21 21:16:36,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 865 states have (on average 1.4219653179190752) internal successors, (1230), 865 states have internal predecessors, (1230), 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) [2023-12-21 21:16:36,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1230 transitions. [2023-12-21 21:16:36,280 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1230 transitions. Word has length 70 [2023-12-21 21:16:36,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:16:36,281 INFO L495 AbstractCegarLoop]: Abstraction has 866 states and 1230 transitions. [2023-12-21 21:16:36,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 9 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) [2023-12-21 21:16:36,281 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1230 transitions. [2023-12-21 21:16:36,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-21 21:16:36,282 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:16:36,282 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:16:36,292 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 (17)] Ended with exit code 0 [2023-12-21 21:16:36,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /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 [2023-12-21 21:16:36,485 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:16:36,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:16:36,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1581200213, now seen corresponding path program 1 times [2023-12-21 21:16:36,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:16:36,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [112495860] [2023-12-21 21:16:36,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:16:36,486 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 [2023-12-21 21:16:36,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:16:36,487 INFO L229 MonitoredProcess]: Starting monitored process 18 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) [2023-12-21 21:16:36,487 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 (18)] Waiting until timeout for monitored process [2023-12-21 21:16:36,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:16:36,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-21 21:16:36,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:16:38,954 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:16:38,954 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:16:41,119 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:16:41,119 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:16:41,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [112495860] [2023-12-21 21:16:41,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [112495860] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:16:41,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:16:41,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2023-12-21 21:16:41,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853929839] [2023-12-21 21:16:41,119 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:16:41,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-21 21:16:41,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:16:41,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-21 21:16:41,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1748, Unknown=0, NotChecked=0, Total=1892 [2023-12-21 21:16:41,121 INFO L87 Difference]: Start difference. First operand 866 states and 1230 transitions. Second operand has 44 states, 44 states have (on average 3.25) internal successors, (143), 43 states have internal predecessors, (143), 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) [2023-12-21 21:17:15,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:17:15,520 INFO L93 Difference]: Finished difference Result 5057 states and 6861 transitions. [2023-12-21 21:17:15,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2023-12-21 21:17:15,521 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.25) internal successors, (143), 43 states have internal predecessors, (143), 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 72 [2023-12-21 21:17:15,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:17:15,535 INFO L225 Difference]: With dead ends: 5057 [2023-12-21 21:17:15,535 INFO L226 Difference]: Without dead ends: 4739 [2023-12-21 21:17:15,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15331 ImplicationChecksByTransitivity, 29.4s TimeCoverageRelationStatistics Valid=6536, Invalid=43416, Unknown=0, NotChecked=0, Total=49952 [2023-12-21 21:17:15,544 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 2503 mSDsluCounter, 13953 mSDsCounter, 0 mSdLazyCounter, 8962 mSolverCounterSat, 378 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2503 SdHoareTripleChecker+Valid, 14647 SdHoareTripleChecker+Invalid, 9340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 378 IncrementalHoareTripleChecker+Valid, 8962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-12-21 21:17:15,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2503 Valid, 14647 Invalid, 9340 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [378 Valid, 8962 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-12-21 21:17:15,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4739 states. [2023-12-21 21:17:15,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4739 to 2638. [2023-12-21 21:17:15,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2638 states, 2637 states have (on average 1.4372392870686386) internal successors, (3790), 2637 states have internal predecessors, (3790), 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) [2023-12-21 21:17:15,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2638 states to 2638 states and 3790 transitions. [2023-12-21 21:17:15,727 INFO L78 Accepts]: Start accepts. Automaton has 2638 states and 3790 transitions. Word has length 72 [2023-12-21 21:17:15,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:17:15,727 INFO L495 AbstractCegarLoop]: Abstraction has 2638 states and 3790 transitions. [2023-12-21 21:17:15,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.25) internal successors, (143), 43 states have internal predecessors, (143), 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) [2023-12-21 21:17:15,727 INFO L276 IsEmpty]: Start isEmpty. Operand 2638 states and 3790 transitions. [2023-12-21 21:17:15,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-21 21:17:15,729 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:17:15,729 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:17:15,731 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 (18)] Ended with exit code 0 [2023-12-21 21:17:15,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /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 [2023-12-21 21:17:15,932 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:17:15,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:17:15,932 INFO L85 PathProgramCache]: Analyzing trace with hash -45649685, now seen corresponding path program 1 times [2023-12-21 21:17:15,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:17:15,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1811527100] [2023-12-21 21:17:15,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:17:15,933 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 [2023-12-21 21:17:15,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:17:15,934 INFO L229 MonitoredProcess]: Starting monitored process 19 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) [2023-12-21 21:17:15,938 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 (19)] Waiting until timeout for monitored process [2023-12-21 21:17:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:17:15,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-21 21:17:15,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:17:18,125 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:17:18,126 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:17:19,997 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:17:19,998 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:17:19,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1811527100] [2023-12-21 21:17:19,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1811527100] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:17:19,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:17:19,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2023-12-21 21:17:19,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875070344] [2023-12-21 21:17:19,998 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:17:19,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-21 21:17:19,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:17:19,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-21 21:17:19,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1760, Unknown=0, NotChecked=0, Total=1892 [2023-12-21 21:17:19,999 INFO L87 Difference]: Start difference. First operand 2638 states and 3790 transitions. Second operand has 44 states, 44 states have (on average 3.25) internal successors, (143), 43 states have internal predecessors, (143), 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) [2023-12-21 21:17:39,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:17:39,298 INFO L93 Difference]: Finished difference Result 7324 states and 10283 transitions. [2023-12-21 21:17:39,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-12-21 21:17:39,320 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.25) internal successors, (143), 43 states have internal predecessors, (143), 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 72 [2023-12-21 21:17:39,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:17:39,332 INFO L225 Difference]: With dead ends: 7324 [2023-12-21 21:17:39,332 INFO L226 Difference]: Without dead ends: 5402 [2023-12-21 21:17:39,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4855 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=2480, Invalid=17260, Unknown=0, NotChecked=0, Total=19740 [2023-12-21 21:17:39,337 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 1622 mSDsluCounter, 9083 mSDsCounter, 0 mSdLazyCounter, 5730 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1622 SdHoareTripleChecker+Valid, 9556 SdHoareTripleChecker+Invalid, 5840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 5730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-21 21:17:39,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1622 Valid, 9556 Invalid, 5840 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [110 Valid, 5730 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-21 21:17:39,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5402 states. [2023-12-21 21:17:39,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5402 to 3146. [2023-12-21 21:17:39,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3146 states, 3145 states have (on average 1.449920508744038) internal successors, (4560), 3145 states have internal predecessors, (4560), 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) [2023-12-21 21:17:39,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3146 states to 3146 states and 4560 transitions. [2023-12-21 21:17:39,721 INFO L78 Accepts]: Start accepts. Automaton has 3146 states and 4560 transitions. Word has length 72 [2023-12-21 21:17:39,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:17:39,721 INFO L495 AbstractCegarLoop]: Abstraction has 3146 states and 4560 transitions. [2023-12-21 21:17:39,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.25) internal successors, (143), 43 states have internal predecessors, (143), 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) [2023-12-21 21:17:39,721 INFO L276 IsEmpty]: Start isEmpty. Operand 3146 states and 4560 transitions. [2023-12-21 21:17:39,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 21:17:39,724 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:17:39,724 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:17:39,728 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 (19)] Ended with exit code 0 [2023-12-21 21:17:39,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /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 [2023-12-21 21:17:39,926 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:17:39,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:17:39,927 INFO L85 PathProgramCache]: Analyzing trace with hash 262661866, now seen corresponding path program 1 times [2023-12-21 21:17:39,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:17:39,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [186855617] [2023-12-21 21:17:39,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:17:39,927 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 [2023-12-21 21:17:39,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:17:39,928 INFO L229 MonitoredProcess]: Starting monitored process 20 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) [2023-12-21 21:17:39,929 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 (20)] Waiting until timeout for monitored process [2023-12-21 21:17:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:17:39,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 21:17:39,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:17:40,014 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 14 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:17:40,014 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:17:40,111 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 14 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:17:40,111 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:17:40,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [186855617] [2023-12-21 21:17:40,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [186855617] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:17:40,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:17:40,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-21 21:17:40,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596570236] [2023-12-21 21:17:40,112 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:17:40,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 21:17:40,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:17:40,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 21:17:40,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-12-21 21:17:40,113 INFO L87 Difference]: Start difference. First operand 3146 states and 4560 transitions. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2023-12-21 21:17:41,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:17:41,179 INFO L93 Difference]: Finished difference Result 11906 states and 19068 transitions. [2023-12-21 21:17:41,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 21:17:41,180 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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 74 [2023-12-21 21:17:41,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:17:41,193 INFO L225 Difference]: With dead ends: 11906 [2023-12-21 21:17:41,193 INFO L226 Difference]: Without dead ends: 5884 [2023-12-21 21:17:41,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2023-12-21 21:17:41,208 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 329 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:17:41,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 140 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:17:41,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2023-12-21 21:17:41,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 4980. [2023-12-21 21:17:41,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4980 states, 4979 states have (on average 1.2379995983129142) internal successors, (6164), 4979 states have internal predecessors, (6164), 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) [2023-12-21 21:17:41,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4980 states to 4980 states and 6164 transitions. [2023-12-21 21:17:41,647 INFO L78 Accepts]: Start accepts. Automaton has 4980 states and 6164 transitions. Word has length 74 [2023-12-21 21:17:41,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:17:41,647 INFO L495 AbstractCegarLoop]: Abstraction has 4980 states and 6164 transitions. [2023-12-21 21:17:41,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2023-12-21 21:17:41,648 INFO L276 IsEmpty]: Start isEmpty. Operand 4980 states and 6164 transitions. [2023-12-21 21:17:41,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-21 21:17:41,649 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:17:41,649 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:17:41,656 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 (20)] Ended with exit code 0 [2023-12-21 21:17:41,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /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 [2023-12-21 21:17:41,851 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:17:41,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:17:41,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1769569720, now seen corresponding path program 1 times [2023-12-21 21:17:41,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:17:41,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1055932725] [2023-12-21 21:17:41,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:17:41,852 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 [2023-12-21 21:17:41,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:17:41,853 INFO L229 MonitoredProcess]: Starting monitored process 21 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) [2023-12-21 21:17:41,854 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 (21)] Waiting until timeout for monitored process [2023-12-21 21:17:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:17:41,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-21 21:17:41,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:17:44,640 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:17:44,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:17:47,652 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:17:47,652 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:17:47,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1055932725] [2023-12-21 21:17:47,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1055932725] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:17:47,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:17:47,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-21 21:17:47,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794925384] [2023-12-21 21:17:47,653 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:17:47,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 21:17:47,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:17:47,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 21:17:47,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=2088, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 21:17:47,656 INFO L87 Difference]: Start difference. First operand 4980 states and 6164 transitions. Second operand has 48 states, 48 states have (on average 3.1041666666666665) internal successors, (149), 47 states have internal predecessors, (149), 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) [2023-12-21 21:18:18,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:18:18,850 INFO L93 Difference]: Finished difference Result 6670 states and 8148 transitions. [2023-12-21 21:18:18,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2023-12-21 21:18:18,851 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.1041666666666665) internal successors, (149), 47 states have internal predecessors, (149), 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 75 [2023-12-21 21:18:18,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:18:18,864 INFO L225 Difference]: With dead ends: 6670 [2023-12-21 21:18:18,865 INFO L226 Difference]: Without dead ends: 6423 [2023-12-21 21:18:18,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8559 ImplicationChecksByTransitivity, 29.0s TimeCoverageRelationStatistics Valid=4001, Invalid=28219, Unknown=0, NotChecked=0, Total=32220 [2023-12-21 21:18:18,867 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 1957 mSDsluCounter, 7970 mSDsCounter, 0 mSdLazyCounter, 4771 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1957 SdHoareTripleChecker+Valid, 8252 SdHoareTripleChecker+Invalid, 5002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 4771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-21 21:18:18,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1957 Valid, 8252 Invalid, 5002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 4771 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-21 21:18:18,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6423 states. [2023-12-21 21:18:19,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6423 to 5618. [2023-12-21 21:18:19,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5618 states, 5617 states have (on average 1.2344667972227168) internal successors, (6934), 5617 states have internal predecessors, (6934), 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) [2023-12-21 21:18:19,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5618 states to 5618 states and 6934 transitions. [2023-12-21 21:18:19,450 INFO L78 Accepts]: Start accepts. Automaton has 5618 states and 6934 transitions. Word has length 75 [2023-12-21 21:18:19,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:18:19,450 INFO L495 AbstractCegarLoop]: Abstraction has 5618 states and 6934 transitions. [2023-12-21 21:18:19,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.1041666666666665) internal successors, (149), 47 states have internal predecessors, (149), 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) [2023-12-21 21:18:19,451 INFO L276 IsEmpty]: Start isEmpty. Operand 5618 states and 6934 transitions. [2023-12-21 21:18:19,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-21 21:18:19,452 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:18:19,452 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:18:19,465 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 (21)] Forceful destruction successful, exit code 0 [2023-12-21 21:18:19,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /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 [2023-12-21 21:18:19,655 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:18:19,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:18:19,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1479936504, now seen corresponding path program 2 times [2023-12-21 21:18:19,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:18:19,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1154768570] [2023-12-21 21:18:19,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 21:18:19,656 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 [2023-12-21 21:18:19,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:18:19,657 INFO L229 MonitoredProcess]: Starting monitored process 22 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) [2023-12-21 21:18:19,658 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 (22)] Waiting until timeout for monitored process [2023-12-21 21:18:19,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 21:18:19,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 21:18:19,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-21 21:18:19,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:18:22,462 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:18:22,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:18:25,121 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:18:25,122 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:18:25,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1154768570] [2023-12-21 21:18:25,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1154768570] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:18:25,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:18:25,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-21 21:18:25,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972107572] [2023-12-21 21:18:25,122 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:18:25,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 21:18:25,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:18:25,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 21:18:25,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=2078, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 21:18:25,124 INFO L87 Difference]: Start difference. First operand 5618 states and 6934 transitions. Second operand has 48 states, 48 states have (on average 3.1041666666666665) internal successors, (149), 47 states have internal predecessors, (149), 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) [2023-12-21 21:19:30,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:19:30,592 INFO L93 Difference]: Finished difference Result 9272 states and 11326 transitions. [2023-12-21 21:19:30,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2023-12-21 21:19:30,593 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.1041666666666665) internal successors, (149), 47 states have internal predecessors, (149), 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 75 [2023-12-21 21:19:30,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:19:30,614 INFO L225 Difference]: With dead ends: 9272 [2023-12-21 21:19:30,614 INFO L226 Difference]: Without dead ends: 8384 [2023-12-21 21:19:30,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21848 ImplicationChecksByTransitivity, 60.9s TimeCoverageRelationStatistics Valid=7576, Invalid=58216, Unknown=0, NotChecked=0, Total=65792 [2023-12-21 21:19:30,626 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 2713 mSDsluCounter, 10435 mSDsCounter, 0 mSdLazyCounter, 6248 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2713 SdHoareTripleChecker+Valid, 10890 SdHoareTripleChecker+Invalid, 6551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 6248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:19:30,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2713 Valid, 10890 Invalid, 6551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 6248 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-12-21 21:19:30,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8384 states. [2023-12-21 21:19:31,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8384 to 6830. [2023-12-21 21:19:31,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6830 states, 6829 states have (on average 1.235027090349978) internal successors, (8434), 6829 states have internal predecessors, (8434), 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) [2023-12-21 21:19:31,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6830 states to 6830 states and 8434 transitions. [2023-12-21 21:19:31,455 INFO L78 Accepts]: Start accepts. Automaton has 6830 states and 8434 transitions. Word has length 75 [2023-12-21 21:19:31,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:19:31,455 INFO L495 AbstractCegarLoop]: Abstraction has 6830 states and 8434 transitions. [2023-12-21 21:19:31,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.1041666666666665) internal successors, (149), 47 states have internal predecessors, (149), 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) [2023-12-21 21:19:31,456 INFO L276 IsEmpty]: Start isEmpty. Operand 6830 states and 8434 transitions. [2023-12-21 21:19:31,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-21 21:19:31,477 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:19:31,477 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:19:31,495 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 (22)] Forceful destruction successful, exit code 0 [2023-12-21 21:19:31,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /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 [2023-12-21 21:19:31,679 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:19:31,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:19:31,679 INFO L85 PathProgramCache]: Analyzing trace with hash -912193912, now seen corresponding path program 3 times [2023-12-21 21:19:31,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:19:31,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088893636] [2023-12-21 21:19:31,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 21:19:31,680 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 [2023-12-21 21:19:31,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:19:31,681 INFO L229 MonitoredProcess]: Starting monitored process 23 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) [2023-12-21 21:19:31,720 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 (23)] Waiting until timeout for monitored process [2023-12-21 21:19:31,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-21 21:19:31,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 21:19:31,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-21 21:19:31,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:19:34,372 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:19:34,373 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:19:37,109 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:19:37,110 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:19:37,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088893636] [2023-12-21 21:19:37,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1088893636] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:19:37,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:19:37,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 46 [2023-12-21 21:19:37,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647662940] [2023-12-21 21:19:37,110 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:19:37,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-21 21:19:37,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:19:37,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-21 21:19:37,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=2012, Unknown=0, NotChecked=0, Total=2162 [2023-12-21 21:19:37,111 INFO L87 Difference]: Start difference. First operand 6830 states and 8434 transitions. Second operand has 47 states, 47 states have (on average 3.1702127659574466) internal successors, (149), 46 states have internal predecessors, (149), 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) [2023-12-21 21:20:43,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:20:43,226 INFO L93 Difference]: Finished difference Result 12059 states and 14718 transitions. [2023-12-21 21:20:43,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2023-12-21 21:20:43,226 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.1702127659574466) internal successors, (149), 46 states have internal predecessors, (149), 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 75 [2023-12-21 21:20:43,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:20:43,238 INFO L225 Difference]: With dead ends: 12059 [2023-12-21 21:20:43,238 INFO L226 Difference]: Without dead ends: 9957 [2023-12-21 21:20:43,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13961 ImplicationChecksByTransitivity, 61.3s TimeCoverageRelationStatistics Valid=6750, Invalid=38832, Unknown=0, NotChecked=0, Total=45582 [2023-12-21 21:20:43,242 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 2677 mSDsluCounter, 9706 mSDsCounter, 0 mSdLazyCounter, 5587 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2677 SdHoareTripleChecker+Valid, 10137 SdHoareTripleChecker+Invalid, 5946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 5587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-21 21:20:43,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2677 Valid, 10137 Invalid, 5946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 5587 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-12-21 21:20:43,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9957 states. [2023-12-21 21:20:44,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9957 to 7507. [2023-12-21 21:20:44,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7507 states, 7506 states have (on average 1.234345856648015) internal successors, (9265), 7506 states have internal predecessors, (9265), 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) [2023-12-21 21:20:44,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7507 states to 7507 states and 9265 transitions. [2023-12-21 21:20:44,181 INFO L78 Accepts]: Start accepts. Automaton has 7507 states and 9265 transitions. Word has length 75 [2023-12-21 21:20:44,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:20:44,182 INFO L495 AbstractCegarLoop]: Abstraction has 7507 states and 9265 transitions. [2023-12-21 21:20:44,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.1702127659574466) internal successors, (149), 46 states have internal predecessors, (149), 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) [2023-12-21 21:20:44,182 INFO L276 IsEmpty]: Start isEmpty. Operand 7507 states and 9265 transitions. [2023-12-21 21:20:44,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-21 21:20:44,183 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:20:44,183 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:20:44,185 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 (23)] Ended with exit code 0 [2023-12-21 21:20:44,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /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 [2023-12-21 21:20:44,385 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:20:44,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:20:44,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1380443849, now seen corresponding path program 1 times [2023-12-21 21:20:44,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:20:44,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64572857] [2023-12-21 21:20:44,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:20:44,386 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 [2023-12-21 21:20:44,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:20:44,387 INFO L229 MonitoredProcess]: Starting monitored process 24 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) [2023-12-21 21:20:44,390 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 (24)] Waiting until timeout for monitored process [2023-12-21 21:20:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:20:44,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 21:20:44,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:20:44,510 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 71 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 21:20:44,510 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:20:44,594 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 61 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 21:20:44,594 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:20:44,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64572857] [2023-12-21 21:20:44,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64572857] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:20:44,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:20:44,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-21 21:20:44,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572843196] [2023-12-21 21:20:44,594 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:20:44,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 21:20:44,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:20:44,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 21:20:44,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-12-21 21:20:44,596 INFO L87 Difference]: Start difference. First operand 7507 states and 9265 transitions. Second operand has 14 states, 14 states have (on average 8.071428571428571) internal successors, (113), 13 states have internal predecessors, (113), 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) [2023-12-21 21:20:46,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:20:46,593 INFO L93 Difference]: Finished difference Result 16517 states and 20663 transitions. [2023-12-21 21:20:46,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-21 21:20:46,593 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.071428571428571) internal successors, (113), 13 states have internal predecessors, (113), 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 76 [2023-12-21 21:20:46,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:20:46,603 INFO L225 Difference]: With dead ends: 16517 [2023-12-21 21:20:46,603 INFO L226 Difference]: Without dead ends: 8596 [2023-12-21 21:20:46,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=254, Invalid=1006, Unknown=0, NotChecked=0, Total=1260 [2023-12-21 21:20:46,606 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 719 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 1455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 21:20:46,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 392 Invalid, 1455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 21:20:46,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8596 states. [2023-12-21 21:20:47,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8596 to 6791. [2023-12-21 21:20:47,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6791 states, 6790 states have (on average 1.1832106038291605) internal successors, (8034), 6790 states have internal predecessors, (8034), 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) [2023-12-21 21:20:47,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6791 states to 6791 states and 8034 transitions. [2023-12-21 21:20:47,598 INFO L78 Accepts]: Start accepts. Automaton has 6791 states and 8034 transitions. Word has length 76 [2023-12-21 21:20:47,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:20:47,598 INFO L495 AbstractCegarLoop]: Abstraction has 6791 states and 8034 transitions. [2023-12-21 21:20:47,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.071428571428571) internal successors, (113), 13 states have internal predecessors, (113), 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) [2023-12-21 21:20:47,598 INFO L276 IsEmpty]: Start isEmpty. Operand 6791 states and 8034 transitions. [2023-12-21 21:20:47,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 21:20:47,599 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:20:47,599 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:20:47,605 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 (24)] Ended with exit code 0 [2023-12-21 21:20:47,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /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 [2023-12-21 21:20:47,801 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:20:47,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:20:47,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1370231246, now seen corresponding path program 1 times [2023-12-21 21:20:47,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:20:47,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127028812] [2023-12-21 21:20:47,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:20:47,802 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 [2023-12-21 21:20:47,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:20:47,803 INFO L229 MonitoredProcess]: Starting monitored process 25 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) [2023-12-21 21:20:47,805 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 (25)] Waiting until timeout for monitored process [2023-12-21 21:20:47,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:20:47,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-21 21:20:47,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:20:50,725 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:20:50,726 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:20:54,276 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:20:54,277 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:20:54,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127028812] [2023-12-21 21:20:54,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127028812] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:20:54,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:20:54,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-21 21:20:54,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494938304] [2023-12-21 21:20:54,277 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:20:54,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 21:20:54,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:20:54,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 21:20:54,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=2096, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 21:20:54,278 INFO L87 Difference]: Start difference. First operand 6791 states and 8034 transitions. Second operand has 48 states, 48 states have (on average 3.2291666666666665) internal successors, (155), 47 states have internal predecessors, (155), 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) [2023-12-21 21:22:10,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:22:10,004 INFO L93 Difference]: Finished difference Result 10734 states and 12549 transitions. [2023-12-21 21:22:10,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2023-12-21 21:22:10,006 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.2291666666666665) internal successors, (155), 47 states have internal predecessors, (155), 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 78 [2023-12-21 21:22:10,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:22:10,020 INFO L225 Difference]: With dead ends: 10734 [2023-12-21 21:22:10,020 INFO L226 Difference]: Without dead ends: 10546 [2023-12-21 21:22:10,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18547 ImplicationChecksByTransitivity, 69.4s TimeCoverageRelationStatistics Valid=5703, Invalid=51657, Unknown=0, NotChecked=0, Total=57360 [2023-12-21 21:22:10,026 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 2302 mSDsluCounter, 11760 mSDsCounter, 0 mSdLazyCounter, 7186 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2302 SdHoareTripleChecker+Valid, 12215 SdHoareTripleChecker+Invalid, 7553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 7186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-12-21 21:22:10,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2302 Valid, 12215 Invalid, 7553 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [367 Valid, 7186 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-12-21 21:22:10,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10546 states. [2023-12-21 21:22:11,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10546 to 7698. [2023-12-21 21:22:11,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7698 states, 7697 states have (on average 1.1755229310120827) internal successors, (9048), 7697 states have internal predecessors, (9048), 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) [2023-12-21 21:22:11,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7698 states to 7698 states and 9048 transitions. [2023-12-21 21:22:11,198 INFO L78 Accepts]: Start accepts. Automaton has 7698 states and 9048 transitions. Word has length 78 [2023-12-21 21:22:11,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:22:11,199 INFO L495 AbstractCegarLoop]: Abstraction has 7698 states and 9048 transitions. [2023-12-21 21:22:11,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.2291666666666665) internal successors, (155), 47 states have internal predecessors, (155), 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) [2023-12-21 21:22:11,199 INFO L276 IsEmpty]: Start isEmpty. Operand 7698 states and 9048 transitions. [2023-12-21 21:22:11,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 21:22:11,200 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:22:11,200 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:22:11,211 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 (25)] Ended with exit code 0 [2023-12-21 21:22:11,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /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 [2023-12-21 21:22:11,413 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:22:11,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:22:11,413 INFO L85 PathProgramCache]: Analyzing trace with hash -986217998, now seen corresponding path program 2 times [2023-12-21 21:22:11,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:22:11,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482370275] [2023-12-21 21:22:11,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 21:22:11,414 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 [2023-12-21 21:22:11,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:22:11,415 INFO L229 MonitoredProcess]: Starting monitored process 26 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) [2023-12-21 21:22:11,416 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 (26)] Waiting until timeout for monitored process [2023-12-21 21:22:11,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 21:22:11,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 21:22:11,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-21 21:22:11,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:22:14,149 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:22:14,150 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:22:17,418 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:22:17,419 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:22:17,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482370275] [2023-12-21 21:22:17,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482370275] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:22:17,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:22:17,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-21 21:22:17,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100748830] [2023-12-21 21:22:17,419 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:22:17,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 21:22:17,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:22:17,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 21:22:17,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=2100, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 21:22:17,420 INFO L87 Difference]: Start difference. First operand 7698 states and 9048 transitions. Second operand has 48 states, 48 states have (on average 3.2291666666666665) internal successors, (155), 47 states have internal predecessors, (155), 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) [2023-12-21 21:23:37,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:23:37,608 INFO L93 Difference]: Finished difference Result 15170 states and 17585 transitions. [2023-12-21 21:23:37,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2023-12-21 21:23:37,609 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.2291666666666665) internal successors, (155), 47 states have internal predecessors, (155), 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 78 [2023-12-21 21:23:37,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:23:37,619 INFO L225 Difference]: With dead ends: 15170 [2023-12-21 21:23:37,619 INFO L226 Difference]: Without dead ends: 13034 [2023-12-21 21:23:37,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21862 ImplicationChecksByTransitivity, 69.3s TimeCoverageRelationStatistics Valid=5804, Invalid=59476, Unknown=0, NotChecked=0, Total=65280 [2023-12-21 21:23:37,623 INFO L413 NwaCegarLoop]: 658 mSDtfsCounter, 2288 mSDsluCounter, 17643 mSDsCounter, 0 mSdLazyCounter, 10701 mSolverCounterSat, 357 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2288 SdHoareTripleChecker+Valid, 18301 SdHoareTripleChecker+Invalid, 11058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 357 IncrementalHoareTripleChecker+Valid, 10701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:23:37,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2288 Valid, 18301 Invalid, 11058 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [357 Valid, 10701 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2023-12-21 21:23:37,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13034 states. [2023-12-21 21:23:38,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13034 to 8584. [2023-12-21 21:23:38,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8584 states, 8583 states have (on average 1.1723173715484096) internal successors, (10062), 8583 states have internal predecessors, (10062), 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) [2023-12-21 21:23:38,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8584 states to 8584 states and 10062 transitions. [2023-12-21 21:23:38,950 INFO L78 Accepts]: Start accepts. Automaton has 8584 states and 10062 transitions. Word has length 78 [2023-12-21 21:23:38,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:23:38,950 INFO L495 AbstractCegarLoop]: Abstraction has 8584 states and 10062 transitions. [2023-12-21 21:23:38,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.2291666666666665) internal successors, (155), 47 states have internal predecessors, (155), 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) [2023-12-21 21:23:38,951 INFO L276 IsEmpty]: Start isEmpty. Operand 8584 states and 10062 transitions. [2023-12-21 21:23:38,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 21:23:38,952 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:23:38,952 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:23:38,966 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 (26)] Forceful destruction successful, exit code 0 [2023-12-21 21:23:39,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /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 [2023-12-21 21:23:39,154 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:23:39,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:23:39,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1200432082, now seen corresponding path program 3 times [2023-12-21 21:23:39,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:23:39,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1167674379] [2023-12-21 21:23:39,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 21:23:39,155 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 [2023-12-21 21:23:39,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:23:39,156 INFO L229 MonitoredProcess]: Starting monitored process 27 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) [2023-12-21 21:23:39,157 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 (27)] Waiting until timeout for monitored process [2023-12-21 21:23:39,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-21 21:23:39,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 21:23:39,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-21 21:23:39,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:23:41,928 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:23:41,928 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:23:45,463 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:23:45,464 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:23:45,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1167674379] [2023-12-21 21:23:45,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1167674379] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:23:45,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:23:45,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-21 21:23:45,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004599337] [2023-12-21 21:23:45,464 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:23:45,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 21:23:45,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:23:45,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 21:23:45,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=2095, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 21:23:45,465 INFO L87 Difference]: Start difference. First operand 8584 states and 10062 transitions. Second operand has 48 states, 48 states have (on average 3.2291666666666665) internal successors, (155), 47 states have internal predecessors, (155), 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) [2023-12-21 21:26:20,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:26:20,400 INFO L93 Difference]: Finished difference Result 29835 states and 34928 transitions. [2023-12-21 21:26:20,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 324 states. [2023-12-21 21:26:20,416 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.2291666666666665) internal successors, (155), 47 states have internal predecessors, (155), 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 78 [2023-12-21 21:26:20,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:26:20,440 INFO L225 Difference]: With dead ends: 29835 [2023-12-21 21:26:20,440 INFO L226 Difference]: Without dead ends: 22047 [2023-12-21 21:26:20,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 364 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51730 ImplicationChecksByTransitivity, 140.6s TimeCoverageRelationStatistics Valid=15420, Invalid=118170, Unknown=0, NotChecked=0, Total=133590 [2023-12-21 21:26:20,453 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 2539 mSDsluCounter, 18051 mSDsCounter, 0 mSdLazyCounter, 12123 mSolverCounterSat, 547 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2539 SdHoareTripleChecker+Valid, 18809 SdHoareTripleChecker+Invalid, 12670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 547 IncrementalHoareTripleChecker+Valid, 12123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:26:20,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2539 Valid, 18809 Invalid, 12670 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [547 Valid, 12123 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time] [2023-12-21 21:26:20,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22047 states. [2023-12-21 21:26:22,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22047 to 13352. [2023-12-21 21:26:22,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13352 states, 13351 states have (on average 1.1789379072728634) internal successors, (15740), 13351 states have internal predecessors, (15740), 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) [2023-12-21 21:26:22,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13352 states to 13352 states and 15740 transitions. [2023-12-21 21:26:22,548 INFO L78 Accepts]: Start accepts. Automaton has 13352 states and 15740 transitions. Word has length 78 [2023-12-21 21:26:22,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:26:22,548 INFO L495 AbstractCegarLoop]: Abstraction has 13352 states and 15740 transitions. [2023-12-21 21:26:22,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.2291666666666665) internal successors, (155), 47 states have internal predecessors, (155), 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) [2023-12-21 21:26:22,548 INFO L276 IsEmpty]: Start isEmpty. Operand 13352 states and 15740 transitions. [2023-12-21 21:26:22,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 21:26:22,549 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:26:22,550 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:26:22,555 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 (27)] Forceful destruction successful, exit code 0 [2023-12-21 21:26:22,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /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 [2023-12-21 21:26:22,756 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:26:22,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:26:22,756 INFO L85 PathProgramCache]: Analyzing trace with hash 202527346, now seen corresponding path program 4 times [2023-12-21 21:26:22,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:26:22,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1247064458] [2023-12-21 21:26:22,756 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 21:26:22,756 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 [2023-12-21 21:26:22,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:26:22,757 INFO L229 MonitoredProcess]: Starting monitored process 28 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) [2023-12-21 21:26:22,759 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 (28)] Waiting until timeout for monitored process [2023-12-21 21:26:22,798 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 21:26:22,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 21:26:22,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-21 21:26:22,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:26:25,416 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:26:25,417 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:26:28,896 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:26:28,896 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:26:28,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1247064458] [2023-12-21 21:26:28,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1247064458] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:26:28,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:26:28,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-21 21:26:28,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176045882] [2023-12-21 21:26:28,897 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:26:28,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 21:26:28,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:26:28,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 21:26:28,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=2106, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 21:26:28,898 INFO L87 Difference]: Start difference. First operand 13352 states and 15740 transitions. Second operand has 48 states, 48 states have (on average 3.2291666666666665) internal successors, (155), 47 states have internal predecessors, (155), 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) [2023-12-21 21:28:08,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:28:08,668 INFO L93 Difference]: Finished difference Result 21916 states and 25434 transitions. [2023-12-21 21:28:08,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2023-12-21 21:28:08,668 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.2291666666666665) internal successors, (155), 47 states have internal predecessors, (155), 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 78 [2023-12-21 21:28:08,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:28:08,687 INFO L225 Difference]: With dead ends: 21916 [2023-12-21 21:28:08,687 INFO L226 Difference]: Without dead ends: 19256 [2023-12-21 21:28:08,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19647 ImplicationChecksByTransitivity, 90.5s TimeCoverageRelationStatistics Valid=7290, Invalid=50070, Unknown=0, NotChecked=0, Total=57360 [2023-12-21 21:28:08,693 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 2175 mSDsluCounter, 11373 mSDsCounter, 0 mSdLazyCounter, 7226 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2175 SdHoareTripleChecker+Valid, 11933 SdHoareTripleChecker+Invalid, 7636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 7226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-12-21 21:28:08,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2175 Valid, 11933 Invalid, 7636 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [410 Valid, 7226 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2023-12-21 21:28:08,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19256 states. [2023-12-21 21:28:10,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19256 to 14985. [2023-12-21 21:28:11,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14985 states, 14984 states have (on average 1.1791243993593166) internal successors, (17668), 14984 states have internal predecessors, (17668), 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) [2023-12-21 21:28:11,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14985 states to 14985 states and 17668 transitions. [2023-12-21 21:28:11,022 INFO L78 Accepts]: Start accepts. Automaton has 14985 states and 17668 transitions. Word has length 78 [2023-12-21 21:28:11,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:28:11,022 INFO L495 AbstractCegarLoop]: Abstraction has 14985 states and 17668 transitions. [2023-12-21 21:28:11,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.2291666666666665) internal successors, (155), 47 states have internal predecessors, (155), 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) [2023-12-21 21:28:11,022 INFO L276 IsEmpty]: Start isEmpty. Operand 14985 states and 17668 transitions. [2023-12-21 21:28:11,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-21 21:28:11,023 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:28:11,024 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:28:11,026 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 (28)] Ended with exit code 0 [2023-12-21 21:28:11,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /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 [2023-12-21 21:28:11,226 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:28:11,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:28:11,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1159860741, now seen corresponding path program 1 times [2023-12-21 21:28:11,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:28:11,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1235264470] [2023-12-21 21:28:11,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:28:11,227 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 [2023-12-21 21:28:11,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:28:11,228 INFO L229 MonitoredProcess]: Starting monitored process 29 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) [2023-12-21 21:28:11,229 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 (29)] Waiting until timeout for monitored process [2023-12-21 21:28:11,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:28:11,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-21 21:28:11,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:28:14,198 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 21:28:14,198 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:28:17,878 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 21:28:17,879 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:28:17,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1235264470] [2023-12-21 21:28:17,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1235264470] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:28:17,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:28:17,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-21 21:28:17,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348886413] [2023-12-21 21:28:17,879 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:28:17,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 21:28:17,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:28:17,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 21:28:17,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=2080, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 21:28:17,880 INFO L87 Difference]: Start difference. First operand 14985 states and 17668 transitions. Second operand has 48 states, 48 states have (on average 3.5625) internal successors, (171), 47 states have internal predecessors, (171), 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) [2023-12-21 21:30:04,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:30:04,689 INFO L93 Difference]: Finished difference Result 27192 states and 31633 transitions. [2023-12-21 21:30:04,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 272 states. [2023-12-21 21:30:04,690 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.5625) internal successors, (171), 47 states have internal predecessors, (171), 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 87 [2023-12-21 21:30:04,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:30:04,710 INFO L225 Difference]: With dead ends: 27192 [2023-12-21 21:30:04,710 INFO L226 Difference]: Without dead ends: 22903 [2023-12-21 21:30:04,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 313 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36088 ImplicationChecksByTransitivity, 96.0s TimeCoverageRelationStatistics Valid=10786, Invalid=88124, Unknown=0, NotChecked=0, Total=98910 [2023-12-21 21:30:04,718 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 2687 mSDsluCounter, 13364 mSDsCounter, 0 mSdLazyCounter, 8246 mSolverCounterSat, 626 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2687 SdHoareTripleChecker+Valid, 13872 SdHoareTripleChecker+Invalid, 8872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 626 IncrementalHoareTripleChecker+Valid, 8246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2023-12-21 21:30:04,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2687 Valid, 13872 Invalid, 8872 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [626 Valid, 8246 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2023-12-21 21:30:04,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22903 states. [2023-12-21 21:30:07,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22903 to 16119. [2023-12-21 21:30:07,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16119 states, 16118 states have (on average 1.1763246060305248) internal successors, (18960), 16118 states have internal predecessors, (18960), 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) [2023-12-21 21:30:07,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16119 states to 16119 states and 18960 transitions. [2023-12-21 21:30:07,477 INFO L78 Accepts]: Start accepts. Automaton has 16119 states and 18960 transitions. Word has length 87 [2023-12-21 21:30:07,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:30:07,477 INFO L495 AbstractCegarLoop]: Abstraction has 16119 states and 18960 transitions. [2023-12-21 21:30:07,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.5625) internal successors, (171), 47 states have internal predecessors, (171), 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) [2023-12-21 21:30:07,477 INFO L276 IsEmpty]: Start isEmpty. Operand 16119 states and 18960 transitions. [2023-12-21 21:30:07,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-21 21:30:07,479 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:30:07,479 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:30:07,482 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 (29)] Forceful destruction successful, exit code 0 [2023-12-21 21:30:07,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /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 [2023-12-21 21:30:07,679 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:30:07,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:30:07,680 INFO L85 PathProgramCache]: Analyzing trace with hash -943373257, now seen corresponding path program 2 times [2023-12-21 21:30:07,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:30:07,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49664649] [2023-12-21 21:30:07,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 21:30:07,680 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 [2023-12-21 21:30:07,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:30:07,681 INFO L229 MonitoredProcess]: Starting monitored process 30 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) [2023-12-21 21:30:07,683 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 (30)] Waiting until timeout for monitored process [2023-12-21 21:30:07,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 21:30:07,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 21:30:07,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-21 21:30:07,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:30:10,763 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 21:30:10,763 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:30:14,621 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 21:30:14,621 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:30:14,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [49664649] [2023-12-21 21:30:14,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [49664649] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:30:14,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:30:14,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-21 21:30:14,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928743458] [2023-12-21 21:30:14,621 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:30:14,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 21:30:14,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:30:14,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 21:30:14,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=2091, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 21:30:14,622 INFO L87 Difference]: Start difference. First operand 16119 states and 18960 transitions. Second operand has 48 states, 48 states have (on average 3.5625) internal successors, (171), 47 states have internal predecessors, (171), 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) Received shutdown request... [2023-12-21 21:30:46,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2023-12-21 21:30:46,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5086 ImplicationChecksByTransitivity, 29.5s TimeCoverageRelationStatistics Valid=2548, Invalid=18622, Unknown=0, NotChecked=0, Total=21170 [2023-12-21 21:30:46,858 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 1527 mSDsluCounter, 8937 mSDsCounter, 0 mSdLazyCounter, 4496 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1527 SdHoareTripleChecker+Valid, 9260 SdHoareTripleChecker+Invalid, 4735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 4496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:30:46,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1527 Valid, 9260 Invalid, 4735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 4496 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-21 21:30:46,859 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 21:30:46,864 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 (30)] Ended with exit code 0 [2023-12-21 21:30:46,889 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 [2023-12-21 21:30:46,889 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 (30)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 21:30:47,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /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 [2023-12-21 21:30:47,062 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (16119states) and FLOYD_HOARE automaton (currently 103 states, 48 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 146 known predicates. [2023-12-21 21:30:47,066 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:30:47,067 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 21:30:47,069 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 09:30:47 BoogieIcfgContainer [2023-12-21 21:30:47,069 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 21:30:47,069 INFO L158 Benchmark]: Toolchain (without parser) took 871678.84ms. Allocated memory was 253.8MB in the beginning and 1.6GB in the end (delta: 1.3GB). Free memory was 215.0MB in the beginning and 646.2MB in the end (delta: -431.2MB). Peak memory consumption was 914.1MB. Max. memory is 8.0GB. [2023-12-21 21:30:47,069 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 184.5MB. Free memory is still 137.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 21:30:47,069 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.66ms. Allocated memory is still 253.8MB. Free memory was 214.6MB in the beginning and 201.6MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-21 21:30:47,069 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.10ms. Allocated memory is still 253.8MB. Free memory was 201.6MB in the beginning and 199.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 21:30:47,069 INFO L158 Benchmark]: Boogie Preprocessor took 28.99ms. Allocated memory is still 253.8MB. Free memory was 199.9MB in the beginning and 197.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 21:30:47,070 INFO L158 Benchmark]: RCFGBuilder took 400.49ms. Allocated memory is still 253.8MB. Free memory was 197.4MB in the beginning and 179.3MB in the end (delta: 18.1MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-21 21:30:47,070 INFO L158 Benchmark]: TraceAbstraction took 871018.71ms. Allocated memory was 253.8MB in the beginning and 1.6GB in the end (delta: 1.3GB). Free memory was 178.5MB in the beginning and 646.2MB in the end (delta: -467.7MB). Peak memory consumption was 877.4MB. Max. memory is 8.0GB. [2023-12-21 21:30:47,070 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 184.5MB. Free memory is still 137.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 199.66ms. Allocated memory is still 253.8MB. Free memory was 214.6MB in the beginning and 201.6MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.10ms. Allocated memory is still 253.8MB. Free memory was 201.6MB in the beginning and 199.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.99ms. Allocated memory is still 253.8MB. Free memory was 199.9MB in the beginning and 197.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 400.49ms. Allocated memory is still 253.8MB. Free memory was 197.4MB in the beginning and 179.3MB in the end (delta: 18.1MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 871018.71ms. Allocated memory was 253.8MB in the beginning and 1.6GB in the end (delta: 1.3GB). Free memory was 178.5MB in the beginning and 646.2MB in the end (delta: -467.7MB). Peak memory consumption was 877.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 25]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 25). Cancelled while NwaCegarLoop was constructing difference of abstraction (16119states) and FLOYD_HOARE automaton (currently 103 states, 48 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 146 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 871.0s, OverallIterations: 29, TraceHistogramMax: 5, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.1s, AutomataDifference: 780.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 30438 SdHoareTripleChecker+Valid, 88.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 30438 mSDsluCounter, 148282 SdHoareTripleChecker+Invalid, 79.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 141060 mSDsCounter, 4512 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 89984 IncrementalHoareTripleChecker+Invalid, 94496 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4512 mSolverCounterUnsat, 7222 mSDtfsCounter, 89984 mSolverCounterSat, 0.7s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5033 GetRequests, 2235 SyntacticMatches, 0 SemanticMatches, 2797 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219907 ImplicationChecksByTransitivity, 700.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16119occurred in iteration=28, InterpolantAutomatonStates: 2220, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 14.3s AutomataMinimizationTime, 28 MinimizatonAttempts, 41278 StatesRemovedByMinimization, 26 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 68.9s InterpolantComputationTime, 1599 NumberOfCodeBlocks, 1599 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 2847 ConstructedInterpolants, 0 QuantifiedInterpolants, 126209 SizeOfPredicates, 266 NumberOfNonLiveVariables, 2932 ConjunctsInSsa, 602 ConjunctsInUnsatCore, 47 InterpolantComputations, 11 PerfectInterpolantSequences, 626/3359 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