/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/array-examples/standard_init3_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 16:10:54,962 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 16:10:55,026 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 16:10:55,030 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 16:10:55,030 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 16:10:55,060 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 16:10:55,061 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 16:10:55,061 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 16:10:55,062 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 16:10:55,066 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 16:10:55,066 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 16:10:55,066 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 16:10:55,067 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 16:10:55,068 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 16:10:55,068 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 16:10:55,069 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 16:10:55,069 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 16:10:55,069 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 16:10:55,070 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 16:10:55,070 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 16:10:55,070 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 16:10:55,070 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 16:10:55,071 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 16:10:55,071 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 16:10:55,071 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 16:10:55,071 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 16:10:55,071 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 16:10:55,072 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 16:10:55,072 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 16:10:55,072 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 16:10:55,072 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 16:10:55,072 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 16:10:55,073 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 16:10:55,073 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 16:10:55,073 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 16:10:55,073 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 16:10:55,073 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 16:10:55,073 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 16:10:55,074 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 16:10:55,074 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 16:10:55,074 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 16:10:55,074 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 16:10:55,074 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 16:10:55,074 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 16:10:55,075 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 16:10:55,075 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 16:10:55,075 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 16:10:55,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 16:10:55,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 16:10:55,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 16:10:55,354 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 16:10:55,355 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 16:10:55,356 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init3_ground-1.i [2023-12-21 16:10:56,521 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 16:10:56,694 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 16:10:56,695 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init3_ground-1.i [2023-12-21 16:10:56,700 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28dcea954/b9447b8fe52d4190a02523804bfe2c4d/FLAGa276acc3d [2023-12-21 16:10:56,709 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28dcea954/b9447b8fe52d4190a02523804bfe2c4d [2023-12-21 16:10:56,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 16:10:56,712 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 16:10:56,713 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 16:10:56,713 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 16:10:56,718 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 16:10:56,718 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:10:56" (1/1) ... [2023-12-21 16:10:56,719 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cf821ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:10:56, skipping insertion in model container [2023-12-21 16:10:56,719 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:10:56" (1/1) ... [2023-12-21 16:10:56,738 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 16:10:56,860 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init3_ground-1.i[816,829] [2023-12-21 16:10:56,876 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 16:10:56,886 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 16:10:56,894 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init3_ground-1.i[816,829] [2023-12-21 16:10:56,899 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 16:10:56,910 INFO L206 MainTranslator]: Completed translation [2023-12-21 16:10:56,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:10:56 WrapperNode [2023-12-21 16:10:56,911 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 16:10:56,912 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 16:10:56,912 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 16:10:56,912 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 16:10:56,916 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:10:56" (1/1) ... [2023-12-21 16:10:56,929 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:10:56" (1/1) ... [2023-12-21 16:10:56,941 INFO L138 Inliner]: procedures = 17, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2023-12-21 16:10:56,942 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 16:10:56,942 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 16:10:56,943 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 16:10:56,943 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 16:10:56,950 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:10:56" (1/1) ... [2023-12-21 16:10:56,950 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:10:56" (1/1) ... [2023-12-21 16:10:56,952 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:10:56" (1/1) ... [2023-12-21 16:10:56,962 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2023-12-21 16:10:56,962 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:10:56" (1/1) ... [2023-12-21 16:10:56,962 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:10:56" (1/1) ... [2023-12-21 16:10:56,967 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:10:56" (1/1) ... [2023-12-21 16:10:56,971 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:10:56" (1/1) ... [2023-12-21 16:10:56,972 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:10:56" (1/1) ... [2023-12-21 16:10:56,977 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:10:56" (1/1) ... [2023-12-21 16:10:56,979 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 16:10:56,982 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 16:10:56,982 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 16:10:56,982 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 16:10:56,983 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:10:56" (1/1) ... [2023-12-21 16:10:56,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 16:10:56,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 16:10:57,013 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 16:10:57,035 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 16:10:57,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 16:10:57,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 16:10:57,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-21 16:10:57,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-21 16:10:57,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-21 16:10:57,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-21 16:10:57,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 16:10:57,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 16:10:57,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-21 16:10:57,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-21 16:10:57,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-21 16:10:57,120 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 16:10:57,121 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 16:10:57,266 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 16:10:57,307 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 16:10:57,307 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-21 16:10:57,308 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:10:57 BoogieIcfgContainer [2023-12-21 16:10:57,308 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 16:10:57,310 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 16:10:57,310 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 16:10:57,313 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 16:10:57,313 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 04:10:56" (1/3) ... [2023-12-21 16:10:57,314 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358059e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:10:57, skipping insertion in model container [2023-12-21 16:10:57,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:10:56" (2/3) ... [2023-12-21 16:10:57,315 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358059e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:10:57, skipping insertion in model container [2023-12-21 16:10:57,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:10:57" (3/3) ... [2023-12-21 16:10:57,317 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_init3_ground-1.i [2023-12-21 16:10:57,333 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 16:10:57,333 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 16:10:57,376 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 16:10:57,383 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;@433f9803, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 16:10:57,383 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 16:10:57,387 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:10:57,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-21 16:10:57,394 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:10:57,395 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:10:57,395 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:10:57,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:10:57,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1797556892, now seen corresponding path program 1 times [2023-12-21 16:10:57,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:10:57,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675687415] [2023-12-21 16:10:57,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 16:10:57,415 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 16:10:57,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:10:57,420 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 16:10:57,440 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 16:10:57,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 16:10:57,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 16:10:57,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:10:57,533 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 16:10:57,533 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 16:10:57,533 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:10:57,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [675687415] [2023-12-21 16:10:57,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [675687415] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 16:10:57,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 16:10:57,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 16:10:57,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143524178] [2023-12-21 16:10:57,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 16:10:57,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 16:10:57,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:10:57,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 16:10:57,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 16:10:57,605 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) 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 16:10:57,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:10:57,647 INFO L93 Difference]: Finished difference Result 29 states and 49 transitions. [2023-12-21 16:10:57,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 16:10:57,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) 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 16:10:57,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:10:57,655 INFO L225 Difference]: With dead ends: 29 [2023-12-21 16:10:57,655 INFO L226 Difference]: Without dead ends: 15 [2023-12-21 16:10:57,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 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 16:10:57,660 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 16:10:57,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 16:10:57,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-12-21 16:10:57,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-12-21 16:10:57,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 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 16:10:57,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2023-12-21 16:10:57,681 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 10 [2023-12-21 16:10:57,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:10:57,681 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2023-12-21 16:10:57,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) 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 16:10:57,681 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2023-12-21 16:10:57,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-21 16:10:57,682 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:10:57,682 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:10:57,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-21 16:10:57,884 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 16:10:57,885 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:10:57,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:10:57,885 INFO L85 PathProgramCache]: Analyzing trace with hash -658359494, now seen corresponding path program 1 times [2023-12-21 16:10:57,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:10:57,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1292394953] [2023-12-21 16:10:57,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 16:10:57,886 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:10:57,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:10:57,888 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 16:10:57,889 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 16:10:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 16:10:57,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 16:10:57,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:10:57,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 16:10:57,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:10:58,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 16:10:58,000 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:10:58,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1292394953] [2023-12-21 16:10:58,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1292394953] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:10:58,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:10:58,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-21 16:10:58,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030695221] [2023-12-21 16:10:58,001 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:10:58,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 16:10:58,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:10:58,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 16:10:58,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 16:10:58,004 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:10:58,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:10:58,127 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2023-12-21 16:10:58,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 16:10:58,128 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-21 16:10:58,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:10:58,129 INFO L225 Difference]: With dead ends: 36 [2023-12-21 16:10:58,129 INFO L226 Difference]: Without dead ends: 24 [2023-12-21 16:10:58,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-21 16:10:58,131 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 16:10:58,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 16:10:58,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-21 16:10:58,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-12-21 16:10:58,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 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 16:10:58,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2023-12-21 16:10:58,145 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2023-12-21 16:10:58,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:10:58,146 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2023-12-21 16:10:58,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:10:58,146 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2023-12-21 16:10:58,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-21 16:10:58,147 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:10:58,147 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:10:58,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-21 16:10:58,349 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 16:10:58,350 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:10:58,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:10:58,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1899745564, now seen corresponding path program 2 times [2023-12-21 16:10:58,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:10:58,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786336073] [2023-12-21 16:10:58,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 16:10:58,352 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 16:10:58,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:10:58,353 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 16:10:58,358 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 16:10:58,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 16:10:58,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:10:58,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 16:10:58,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:10:58,465 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 16:10:58,465 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:10:58,558 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 16:10:58,559 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:10:58,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786336073] [2023-12-21 16:10:58,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1786336073] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:10:58,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:10:58,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-21 16:10:58,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765627157] [2023-12-21 16:10:58,560 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:10:58,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 16:10:58,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:10:58,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 16:10:58,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-21 16:10:58,561 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:10:58,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:10:58,946 INFO L93 Difference]: Finished difference Result 60 states and 83 transitions. [2023-12-21 16:10:58,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 16:10:58,946 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-21 16:10:58,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:10:58,947 INFO L225 Difference]: With dead ends: 60 [2023-12-21 16:10:58,947 INFO L226 Difference]: Without dead ends: 42 [2023-12-21 16:10:58,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-21 16:10:58,949 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 16:10:58,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 16:10:58,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-21 16:10:58,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-12-21 16:10:58,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 41 states have internal predecessors, (45), 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 16:10:58,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2023-12-21 16:10:58,962 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 22 [2023-12-21 16:10:58,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:10:58,962 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2023-12-21 16:10:58,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:10:58,962 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2023-12-21 16:10:58,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-21 16:10:58,963 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:10:58,963 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:10:58,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-21 16:10:59,164 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 16:10:59,165 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:10:59,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:10:59,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1924660516, now seen corresponding path program 3 times [2023-12-21 16:10:59,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:10:59,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478382754] [2023-12-21 16:10:59,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 16:10:59,166 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 16:10:59,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:10:59,168 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 16:10:59,170 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 16:10:59,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-21 16:10:59,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:10:59,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 16:10:59,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:10:59,461 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-12-21 16:10:59,461 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:10:59,849 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-12-21 16:10:59,849 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:10:59,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1478382754] [2023-12-21 16:10:59,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1478382754] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:10:59,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:10:59,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-12-21 16:10:59,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810178856] [2023-12-21 16:10:59,850 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:10:59,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 16:10:59,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:10:59,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 16:10:59,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-21 16:10:59,852 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 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 16:11:01,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:11:01,354 INFO L93 Difference]: Finished difference Result 108 states and 149 transitions. [2023-12-21 16:11:01,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 16:11:01,360 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 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 16:11:01,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:11:01,363 INFO L225 Difference]: With dead ends: 108 [2023-12-21 16:11:01,363 INFO L226 Difference]: Without dead ends: 78 [2023-12-21 16:11:01,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 16:11:01,369 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 16:11:01,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 16:11:01,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-21 16:11:01,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2023-12-21 16:11:01,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.051948051948052) internal successors, (81), 77 states have internal predecessors, (81), 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 16:11:01,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2023-12-21 16:11:01,391 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 40 [2023-12-21 16:11:01,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:11:01,394 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2023-12-21 16:11:01,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 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 16:11:01,395 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2023-12-21 16:11:01,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-21 16:11:01,398 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:11:01,398 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:11:01,406 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 16:11:01,602 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 16:11:01,603 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:11:01,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:11:01,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1257228708, now seen corresponding path program 4 times [2023-12-21 16:11:01,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:11:01,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635795252] [2023-12-21 16:11:01,605 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 16:11:01,605 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 16:11:01,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:11:01,606 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 16:11:01,608 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 16:11:01,768 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 16:11:01,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:11:01,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 16:11:01,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:11:02,106 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2023-12-21 16:11:02,107 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:11:03,494 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2023-12-21 16:11:03,494 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:11:03,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1635795252] [2023-12-21 16:11:03,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1635795252] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:11:03,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:11:03,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-21 16:11:03,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574085859] [2023-12-21 16:11:03,495 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:11:03,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 16:11:03,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:11:03,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 16:11:03,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 16:11:03,498 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand has 48 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 47 states have internal predecessors, (58), 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 16:11:11,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:11:11,811 INFO L93 Difference]: Finished difference Result 204 states and 281 transitions. [2023-12-21 16:11:11,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-21 16:11:11,812 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 47 states have internal predecessors, (58), 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 16:11:11,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:11:11,813 INFO L225 Difference]: With dead ends: 204 [2023-12-21 16:11:11,813 INFO L226 Difference]: Without dead ends: 150 [2023-12-21 16:11:11,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 16:11:11,816 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 1823 mSolverCounterSat, 1217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 3040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1217 IncrementalHoareTripleChecker+Valid, 1823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-21 16:11:11,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 130 Invalid, 3040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1217 Valid, 1823 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-21 16:11:11,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-12-21 16:11:11,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2023-12-21 16:11:11,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.0268456375838926) internal successors, (153), 149 states have internal predecessors, (153), 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 16:11:11,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 153 transitions. [2023-12-21 16:11:11,834 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 153 transitions. Word has length 76 [2023-12-21 16:11:11,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:11:11,834 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 153 transitions. [2023-12-21 16:11:11,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 47 states have internal predecessors, (58), 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 16:11:11,834 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 153 transitions. [2023-12-21 16:11:11,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-21 16:11:11,836 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:11:11,836 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:11:11,845 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 16:11:12,042 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 16:11:12,042 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:11:12,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:11:12,043 INFO L85 PathProgramCache]: Analyzing trace with hash -2000691876, now seen corresponding path program 5 times [2023-12-21 16:11:12,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:11:12,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [361862904] [2023-12-21 16:11:12,044 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 16:11:12,044 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 16:11:12,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:11:12,045 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 16:11:12,054 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 16:11:14,085 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2023-12-21 16:11:14,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:11:14,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-21 16:11:14,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:11:15,145 INFO L134 CoverageAnalysis]: Checked inductivity of 3243 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 2162 trivial. 0 not checked. [2023-12-21 16:11:15,146 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:11:21,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3243 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 2162 trivial. 0 not checked. [2023-12-21 16:11:21,615 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:11:21,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [361862904] [2023-12-21 16:11:21,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [361862904] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:11:21,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:11:21,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2023-12-21 16:11:21,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883917099] [2023-12-21 16:11:21,615 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:11:21,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-21 16:11:21,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:11:21,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-21 16:11:21,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2023-12-21 16:11:21,622 INFO L87 Difference]: Start difference. First operand 150 states and 153 transitions. Second operand has 96 states, 96 states have (on average 1.1041666666666667) internal successors, (106), 95 states have internal predecessors, (106), 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 16:12:15,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:12:15,133 INFO L93 Difference]: Finished difference Result 396 states and 545 transitions. [2023-12-21 16:12:15,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-12-21 16:12:15,136 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.1041666666666667) internal successors, (106), 95 states have internal predecessors, (106), 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 148 [2023-12-21 16:12:15,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:12:15,138 INFO L225 Difference]: With dead ends: 396 [2023-12-21 16:12:15,138 INFO L226 Difference]: Without dead ends: 294 [2023-12-21 16:12:15,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 52.7s TimeCoverageRelationStatistics Valid=6910, Invalid=13396, Unknown=0, NotChecked=0, Total=20306 [2023-12-21 16:12:15,142 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 276 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 7067 mSolverCounterSat, 5047 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 12114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5047 IncrementalHoareTripleChecker+Valid, 7067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-12-21 16:12:15,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 205 Invalid, 12114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5047 Valid, 7067 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2023-12-21 16:12:15,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-12-21 16:12:15,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2023-12-21 16:12:15,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 1.0136518771331058) internal successors, (297), 293 states have internal predecessors, (297), 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 16:12:15,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 297 transitions. [2023-12-21 16:12:15,173 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 297 transitions. Word has length 148 [2023-12-21 16:12:15,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:12:15,173 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 297 transitions. [2023-12-21 16:12:15,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.1041666666666667) internal successors, (106), 95 states have internal predecessors, (106), 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 16:12:15,174 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 297 transitions. [2023-12-21 16:12:15,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2023-12-21 16:12:15,178 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:12:15,178 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:12:15,191 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 16:12:15,388 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 16:12:15,388 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:12:15,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:12:15,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1281610916, now seen corresponding path program 6 times [2023-12-21 16:12:15,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:12:15,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686515933] [2023-12-21 16:12:15,390 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 16:12:15,390 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 16:12:15,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:12:15,391 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 16:12:15,391 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 16:12:25,391 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2023-12-21 16:12:25,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:12:25,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 1441 conjuncts, 97 conjunts are in the unsatisfiable core [2023-12-21 16:12:25,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:12:28,996 INFO L134 CoverageAnalysis]: Checked inductivity of 13395 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 8930 trivial. 0 not checked. [2023-12-21 16:12:28,997 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:12:50,235 INFO L134 CoverageAnalysis]: Checked inductivity of 13395 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 8930 trivial. 0 not checked. [2023-12-21 16:12:50,236 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:12:50,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686515933] [2023-12-21 16:12:50,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1686515933] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:12:50,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:12:50,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 191 [2023-12-21 16:12:50,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247949593] [2023-12-21 16:12:50,236 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:12:50,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2023-12-21 16:12:50,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:12:50,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2023-12-21 16:12:50,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9406, Invalid=27266, Unknown=0, NotChecked=0, Total=36672 [2023-12-21 16:12:50,244 INFO L87 Difference]: Start difference. First operand 294 states and 297 transitions. Second operand has 192 states, 192 states have (on average 1.0520833333333333) internal successors, (202), 191 states have internal predecessors, (202), 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 16:21:27,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:21:27,146 INFO L93 Difference]: Finished difference Result 780 states and 1073 transitions. [2023-12-21 16:21:27,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2023-12-21 16:21:27,148 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 192 states have (on average 1.0520833333333333) internal successors, (202), 191 states have internal predecessors, (202), 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 292 [2023-12-21 16:21:27,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:21:27,151 INFO L225 Difference]: With dead ends: 780 [2023-12-21 16:21:27,151 INFO L226 Difference]: Without dead ends: 582 [2023-12-21 16:21:27,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 677 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4465 ImplicationChecksByTransitivity, 506.8s TimeCoverageRelationStatistics Valid=27628, Invalid=54454, Unknown=0, NotChecked=0, Total=82082 [2023-12-21 16:21:27,160 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 456 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 27767 mSolverCounterSat, 17373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 45140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17373 IncrementalHoareTripleChecker+Valid, 27767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.2s IncrementalHoareTripleChecker+Time [2023-12-21 16:21:27,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 160 Invalid, 45140 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17373 Valid, 27767 Invalid, 0 Unknown, 0 Unchecked, 32.2s Time] [2023-12-21 16:21:27,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2023-12-21 16:21:27,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 582. [2023-12-21 16:21:27,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 581 states have (on average 1.0068846815834767) internal successors, (585), 581 states have internal predecessors, (585), 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 16:21:27,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 585 transitions. [2023-12-21 16:21:27,209 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 585 transitions. Word has length 292 [2023-12-21 16:21:27,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:21:27,209 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 585 transitions. [2023-12-21 16:21:27,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 192 states have (on average 1.0520833333333333) internal successors, (202), 191 states have internal predecessors, (202), 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 16:21:27,210 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 585 transitions. [2023-12-21 16:21:27,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2023-12-21 16:21:27,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:21:27,220 INFO L195 NwaCegarLoop]: trace histogram [190, 190, 190, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:21:27,246 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 16:21:27,436 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 16:21:27,437 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:21:27,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:21:27,437 INFO L85 PathProgramCache]: Analyzing trace with hash 793298780, now seen corresponding path program 7 times [2023-12-21 16:21:27,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:21:27,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [871131839] [2023-12-21 16:21:27,438 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 16:21:27,439 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 16:21:27,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:21:27,440 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 16:21:27,442 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 16:21:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 16:21:28,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 2881 conjuncts, 192 conjunts are in the unsatisfiable core [2023-12-21 16:21:28,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:21:42,977 INFO L134 CoverageAnalysis]: Checked inductivity of 54435 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 36290 trivial. 0 not checked. [2023-12-21 16:21:42,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:23:08,088 INFO L134 CoverageAnalysis]: Checked inductivity of 54435 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 36290 trivial. 0 not checked. [2023-12-21 16:23:08,089 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:23:08,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [871131839] [2023-12-21 16:23:08,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [871131839] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:23:08,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:23:08,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192] total 383 [2023-12-21 16:23:08,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757473439] [2023-12-21 16:23:08,090 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:23:08,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2023-12-21 16:23:08,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:23:08,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2023-12-21 16:23:08,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37246, Invalid=109826, Unknown=0, NotChecked=0, Total=147072 [2023-12-21 16:23:08,109 INFO L87 Difference]: Start difference. First operand 582 states and 585 transitions. Second operand has 384 states, 384 states have (on average 1.0260416666666667) internal successors, (394), 383 states have internal predecessors, (394), 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 16:23:57,975 WARN L293 SmtUtils]: Spent 9.92s on a formula simplification. DAG size of input: 574 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 16:24:30,121 WARN L293 SmtUtils]: Spent 9.91s on a formula simplification. DAG size of input: 571 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 16:25:04,418 WARN L293 SmtUtils]: Spent 9.97s on a formula simplification. DAG size of input: 568 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-21 16:25:12,766 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 (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 16:25:12,766 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 16:25:12,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2023-12-21 16:25:12,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1162 GetRequests, 776 SyntacticMatches, 0 SemanticMatches, 385 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 194.7s TimeCoverageRelationStatistics Valid=38398, Invalid=110984, Unknown=0, NotChecked=0, Total=149382 [2023-12-21 16:25:12,843 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36676 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 36677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2023-12-21 16:25:12,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 36677 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 36676 Invalid, 0 Unknown, 0 Unchecked, 17.6s Time] [2023-12-21 16:25:12,845 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 16:25:12,873 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 16:25:13,047 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 16:25:13,048 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (582states) and FLOYD_HOARE automaton (currently 196 states, 384 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 387 known predicates. [2023-12-21 16:25:13,052 INFO L445 BasicCegarLoop]: Path program histogram: [7, 1] [2023-12-21 16:25:13,054 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 16:25:13,055 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 04:25:13 BoogieIcfgContainer [2023-12-21 16:25:13,055 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 16:25:13,055 INFO L158 Benchmark]: Toolchain (without parser) took 856343.28ms. Allocated memory is still 255.9MB. Free memory was 207.6MB in the beginning and 136.4MB in the end (delta: 71.2MB). Peak memory consumption was 179.5MB. Max. memory is 8.0GB. [2023-12-21 16:25:13,055 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 206.6MB. Free memory is still 159.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 16:25:13,056 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.06ms. Allocated memory is still 255.9MB. Free memory was 207.6MB in the beginning and 196.4MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-21 16:25:13,056 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.08ms. Allocated memory is still 255.9MB. Free memory was 196.1MB in the beginning and 194.7MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-21 16:25:13,056 INFO L158 Benchmark]: Boogie Preprocessor took 37.02ms. Allocated memory is still 255.9MB. Free memory was 194.7MB in the beginning and 192.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 16:25:13,056 INFO L158 Benchmark]: RCFGBuilder took 326.10ms. Allocated memory is still 255.9MB. Free memory was 192.6MB in the beginning and 180.4MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-21 16:25:13,057 INFO L158 Benchmark]: TraceAbstraction took 855744.93ms. Allocated memory is still 255.9MB. Free memory was 179.7MB in the beginning and 136.4MB in the end (delta: 43.3MB). Peak memory consumption was 152.3MB. Max. memory is 8.0GB. [2023-12-21 16:25:13,057 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 206.6MB. Free memory is still 159.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 198.06ms. Allocated memory is still 255.9MB. Free memory was 207.6MB in the beginning and 196.4MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.08ms. Allocated memory is still 255.9MB. Free memory was 196.1MB in the beginning and 194.7MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.02ms. Allocated memory is still 255.9MB. Free memory was 194.7MB in the beginning and 192.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 326.10ms. Allocated memory is still 255.9MB. Free memory was 192.6MB in the beginning and 180.4MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 855744.93ms. Allocated memory is still 255.9MB. Free memory was 179.7MB in the beginning and 136.4MB in the end (delta: 43.3MB). Peak memory consumption was 152.3MB. 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: 13]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 13). Cancelled while NwaCegarLoop was constructing difference of abstraction (582states) and FLOYD_HOARE automaton (currently 196 states, 384 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 387 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 855.7s, OverallIterations: 8, TraceHistogramMax: 190, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 705.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 732 SdHoareTripleChecker+Valid, 61.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 732 mSDsluCounter, 642 SdHoareTripleChecker+Invalid, 53.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 571 mSDsCounter, 24025 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 73991 IncrementalHoareTripleChecker+Invalid, 98016 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24025 mSolverCounterUnsat, 71 mSDtfsCounter, 73991 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2530 GetRequests, 1598 SyntacticMatches, 0 SemanticMatches, 931 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5831 ImplicationChecksByTransitivity, 762.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=582occurred in iteration=7, InterpolantAutomatonStates: 383, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 12.7s SatisfiabilityAnalysisTime, 134.5s InterpolantComputationTime, 1181 NumberOfCodeBlocks, 1181 NumberOfCodeBlocksAsserted, 84 NumberOfCheckSat, 2337 ConstructedInterpolants, 0 QuantifiedInterpolants, 5419 SizeOfPredicates, 0 NumberOfNonLiveVariables, 5753 ConjunctsInSsa, 385 ConjunctsInUnsatCore, 15 InterpolantComputations, 1 PerfectInterpolantSequences, 96040/144060 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