/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-multidimensional/rev-2-n-u.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 19:13:34,823 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 19:13:34,907 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 19:13:34,912 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 19:13:34,913 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 19:13:34,940 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 19:13:34,940 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 19:13:34,941 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 19:13:34,941 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 19:13:34,945 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 19:13:34,945 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 19:13:34,946 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 19:13:34,946 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 19:13:34,947 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 19:13:34,948 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 19:13:34,948 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 19:13:34,948 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 19:13:34,949 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 19:13:34,949 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 19:13:34,949 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 19:13:34,950 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 19:13:34,951 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 19:13:34,951 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 19:13:34,951 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 19:13:34,951 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 19:13:34,951 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 19:13:34,952 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 19:13:34,952 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 19:13:34,952 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 19:13:34,952 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 19:13:34,953 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 19:13:34,953 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 19:13:34,954 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 19:13:34,954 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 19:13:34,954 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 19:13:34,954 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 19:13:34,954 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 19:13:34,954 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 19:13:34,955 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 19:13:34,955 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 19:13:34,955 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 19:13:34,955 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 19:13:34,955 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 19:13:34,956 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 19:13:34,956 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 19:13:34,956 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 19:13:34,956 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 19:13:35,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 19:13:35,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 19:13:35,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 19:13:35,200 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 19:13:35,200 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 19:13:35,202 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-multidimensional/rev-2-n-u.c [2023-12-21 19:13:36,457 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 19:13:36,654 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 19:13:36,655 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/rev-2-n-u.c [2023-12-21 19:13:36,663 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44aa12e5c/f1427b6542a34b128fb0a10c21693bf5/FLAGef3cb0564 [2023-12-21 19:13:36,673 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44aa12e5c/f1427b6542a34b128fb0a10c21693bf5 [2023-12-21 19:13:36,675 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 19:13:36,682 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 19:13:36,684 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 19:13:36,684 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 19:13:36,688 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 19:13:36,689 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 07:13:36" (1/1) ... [2023-12-21 19:13:36,690 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c06c05c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:13:36, skipping insertion in model container [2023-12-21 19:13:36,690 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 07:13:36" (1/1) ... [2023-12-21 19:13:36,710 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 19:13:36,846 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-multidimensional/rev-2-n-u.c[321,334] [2023-12-21 19:13:36,864 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 19:13:36,874 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 19:13:36,883 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-multidimensional/rev-2-n-u.c[321,334] [2023-12-21 19:13:36,891 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 19:13:36,901 INFO L206 MainTranslator]: Completed translation [2023-12-21 19:13:36,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:13:36 WrapperNode [2023-12-21 19:13:36,902 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 19:13:36,903 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 19:13:36,903 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 19:13:36,903 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 19:13:36,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:13:36" (1/1) ... [2023-12-21 19:13:36,913 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:13:36" (1/1) ... [2023-12-21 19:13:36,928 INFO L138 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 82 [2023-12-21 19:13:36,928 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 19:13:36,929 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 19:13:36,929 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 19:13:36,929 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 19:13:36,936 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:13:36" (1/1) ... [2023-12-21 19:13:36,936 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:13:36" (1/1) ... [2023-12-21 19:13:36,939 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:13:36" (1/1) ... [2023-12-21 19:13:36,948 INFO L175 MemorySlicer]: Split 7 memory accesses to 3 slices as follows [2, 3, 2]. 43 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-12-21 19:13:36,949 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:13:36" (1/1) ... [2023-12-21 19:13:36,949 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:13:36" (1/1) ... [2023-12-21 19:13:36,962 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:13:36" (1/1) ... [2023-12-21 19:13:36,965 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:13:36" (1/1) ... [2023-12-21 19:13:36,966 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:13:36" (1/1) ... [2023-12-21 19:13:36,967 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:13:36" (1/1) ... [2023-12-21 19:13:36,970 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 19:13:36,971 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 19:13:36,971 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 19:13:36,972 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 19:13:36,972 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:13:36" (1/1) ... [2023-12-21 19:13:36,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 19:13:36,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 19:13:36,997 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 19:13:36,999 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 19:13:37,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 19:13:37,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 19:13:37,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-21 19:13:37,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-21 19:13:37,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-21 19:13:37,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-21 19:13:37,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-21 19:13:37,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-21 19:13:37,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 19:13:37,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 19:13:37,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-21 19:13:37,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-21 19:13:37,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-21 19:13:37,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-21 19:13:37,082 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 19:13:37,084 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 19:13:37,331 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 19:13:37,358 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 19:13:37,358 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-12-21 19:13:37,359 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 07:13:37 BoogieIcfgContainer [2023-12-21 19:13:37,359 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 19:13:37,361 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 19:13:37,361 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 19:13:37,364 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 19:13:37,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 07:13:36" (1/3) ... [2023-12-21 19:13:37,364 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d28e159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 07:13:37, skipping insertion in model container [2023-12-21 19:13:37,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:13:36" (2/3) ... [2023-12-21 19:13:37,365 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d28e159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 07:13:37, skipping insertion in model container [2023-12-21 19:13:37,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 07:13:37" (3/3) ... [2023-12-21 19:13:37,366 INFO L112 eAbstractionObserver]: Analyzing ICFG rev-2-n-u.c [2023-12-21 19:13:37,381 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 19:13:37,382 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 19:13:37,425 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 19:13:37,431 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;@5e31b6fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 19:13:37,431 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 19:13:37,435 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.875) internal successors, (30), 17 states have internal predecessors, (30), 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 19:13:37,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-21 19:13:37,440 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:13:37,441 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:13:37,442 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:13:37,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:13:37,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1021079152, now seen corresponding path program 1 times [2023-12-21 19:13:37,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:13:37,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1792734806] [2023-12-21 19:13:37,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 19:13:37,508 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 19:13:37,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:13:37,511 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 19:13:37,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-21 19:13:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 19:13:37,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 19:13:37,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:13:37,653 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 19:13:37,654 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 19:13:37,654 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:13:37,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1792734806] [2023-12-21 19:13:37,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1792734806] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 19:13:37,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 19:13:37,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 19:13:37,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425869189] [2023-12-21 19:13:37,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 19:13:37,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 19:13:37,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:13:37,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 19:13:37,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 19:13:37,684 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.875) internal successors, (30), 17 states have internal predecessors, (30), 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 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:13:37,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:13:37,850 INFO L93 Difference]: Finished difference Result 38 states and 66 transitions. [2023-12-21 19:13:37,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 19:13:37,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-21 19:13:37,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:13:37,858 INFO L225 Difference]: With dead ends: 38 [2023-12-21 19:13:37,859 INFO L226 Difference]: Without dead ends: 19 [2023-12-21 19:13:37,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 19:13:37,865 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 19:13:37,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 25 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 19:13:37,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-12-21 19:13:37,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2023-12-21 19:13:37,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 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 19:13:37,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2023-12-21 19:13:37,888 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 9 [2023-12-21 19:13:37,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:13:37,888 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2023-12-21 19:13:37,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:13:37,889 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2023-12-21 19:13:37,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-21 19:13:37,889 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:13:37,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:13:37,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-21 19:13:38,091 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 19:13:38,091 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:13:38,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:13:38,092 INFO L85 PathProgramCache]: Analyzing trace with hash -109940317, now seen corresponding path program 1 times [2023-12-21 19:13:38,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:13:38,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [450249606] [2023-12-21 19:13:38,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 19:13:38,093 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 19:13:38,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:13:38,094 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 19:13:38,096 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 19:13:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 19:13:38,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 19:13:38,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:13:38,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 19:13:38,174 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 19:13:38,174 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:13:38,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [450249606] [2023-12-21 19:13:38,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [450249606] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 19:13:38,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 19:13:38,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 19:13:38,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277622922] [2023-12-21 19:13:38,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 19:13:38,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 19:13:38,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:13:38,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 19:13:38,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 19:13:38,184 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:13:38,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:13:38,368 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2023-12-21 19:13:38,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 19:13:38,368 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-21 19:13:38,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:13:38,369 INFO L225 Difference]: With dead ends: 42 [2023-12-21 19:13:38,369 INFO L226 Difference]: Without dead ends: 27 [2023-12-21 19:13:38,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 19:13:38,371 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 23 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 19:13:38,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 21 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 19:13:38,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-12-21 19:13:38,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20. [2023-12-21 19:13:38,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:13:38,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2023-12-21 19:13:38,377 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 12 [2023-12-21 19:13:38,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:13:38,378 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2023-12-21 19:13:38,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:13:38,378 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2023-12-21 19:13:38,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-21 19:13:38,378 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:13:38,378 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:13:38,392 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 19:13:38,586 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 19:13:38,586 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:13:38,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:13:38,587 INFO L85 PathProgramCache]: Analyzing trace with hash 201196895, now seen corresponding path program 1 times [2023-12-21 19:13:38,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:13:38,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002662816] [2023-12-21 19:13:38,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 19:13:38,588 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 19:13:38,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:13:38,589 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 19:13:38,590 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 19:13:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 19:13:38,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 19:13:38,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:13:38,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 19:13:38,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:13:38,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 19:13:38,763 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:13:38,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002662816] [2023-12-21 19:13:38,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002662816] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 19:13:38,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:13:38,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-21 19:13:38,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910816800] [2023-12-21 19:13:38,764 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:13:38,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 19:13:38,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:13:38,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 19:13:38,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 19:13:38,766 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:13:39,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:13:39,235 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions. [2023-12-21 19:13:39,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 19:13:39,236 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-21 19:13:39,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:13:39,237 INFO L225 Difference]: With dead ends: 62 [2023-12-21 19:13:39,237 INFO L226 Difference]: Without dead ends: 44 [2023-12-21 19:13:39,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-12-21 19:13:39,238 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 85 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 19:13:39,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 41 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 19:13:39,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-21 19:13:39,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2023-12-21 19:13:39,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 34 states have internal predecessors, (43), 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 19:13:39,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2023-12-21 19:13:39,247 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 13 [2023-12-21 19:13:39,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:13:39,247 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2023-12-21 19:13:39,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:13:39,247 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2023-12-21 19:13:39,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-21 19:13:39,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:13:39,248 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:13:39,255 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 19:13:39,451 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 19:13:39,452 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:13:39,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:13:39,453 INFO L85 PathProgramCache]: Analyzing trace with hash 160923811, now seen corresponding path program 2 times [2023-12-21 19:13:39,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:13:39,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [40660939] [2023-12-21 19:13:39,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 19:13:39,453 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 19:13:39,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:13:39,454 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 19:13:39,455 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 19:13:39,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 19:13:39,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 19:13:39,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 19:13:39,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:13:39,540 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 19:13:39,540 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 19:13:39,540 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:13:39,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [40660939] [2023-12-21 19:13:39,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [40660939] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 19:13:39,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 19:13:39,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 19:13:39,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587711399] [2023-12-21 19:13:39,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 19:13:39,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 19:13:39,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:13:39,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 19:13:39,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 19:13:39,542 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:13:39,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:13:39,761 INFO L93 Difference]: Finished difference Result 83 states and 102 transitions. [2023-12-21 19:13:39,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 19:13:39,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-21 19:13:39,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:13:39,768 INFO L225 Difference]: With dead ends: 83 [2023-12-21 19:13:39,768 INFO L226 Difference]: Without dead ends: 65 [2023-12-21 19:13:39,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 19:13:39,769 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 39 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 19:13:39,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 16 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 19:13:39,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-12-21 19:13:39,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 36. [2023-12-21 19:13:39,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 35 states have internal predecessors, (44), 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 19:13:39,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2023-12-21 19:13:39,789 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 16 [2023-12-21 19:13:39,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:13:39,790 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2023-12-21 19:13:39,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:13:39,790 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2023-12-21 19:13:39,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-21 19:13:39,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:13:39,792 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:13:39,798 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 19:13:39,995 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 19:13:39,995 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:13:39,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:13:39,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1512840420, now seen corresponding path program 1 times [2023-12-21 19:13:39,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:13:39,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [377849406] [2023-12-21 19:13:39,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 19:13:39,996 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 19:13:39,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:13:39,998 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 19:13:39,999 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 19:13:40,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 19:13:40,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 19:13:40,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:13:40,194 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 19:13:40,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:13:40,384 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 19:13:40,384 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:13:40,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [377849406] [2023-12-21 19:13:40,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [377849406] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 19:13:40,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:13:40,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-21 19:13:40,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270567645] [2023-12-21 19:13:40,385 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:13:40,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 19:13:40,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:13:40,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 19:13:40,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-12-21 19:13:40,387 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 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 19:13:41,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:13:41,482 INFO L93 Difference]: Finished difference Result 119 states and 150 transitions. [2023-12-21 19:13:41,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 19:13:41,483 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-21 19:13:41,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:13:41,483 INFO L225 Difference]: With dead ends: 119 [2023-12-21 19:13:41,484 INFO L226 Difference]: Without dead ends: 85 [2023-12-21 19:13:41,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2023-12-21 19:13:41,485 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 274 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 19:13:41,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 127 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 19:13:41,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-12-21 19:13:41,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 66. [2023-12-21 19:13:41,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.2307692307692308) internal successors, (80), 65 states have internal predecessors, (80), 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 19:13:41,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2023-12-21 19:13:41,502 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 23 [2023-12-21 19:13:41,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:13:41,502 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2023-12-21 19:13:41,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 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 19:13:41,503 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2023-12-21 19:13:41,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-21 19:13:41,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:13:41,504 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:13:41,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-21 19:13:41,707 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 19:13:41,708 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:13:41,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:13:41,708 INFO L85 PathProgramCache]: Analyzing trace with hash -613040220, now seen corresponding path program 2 times [2023-12-21 19:13:41,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:13:41,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1934721311] [2023-12-21 19:13:41,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 19:13:41,709 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 19:13:41,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:13:41,710 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 19:13:41,711 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 19:13:41,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 19:13:41,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 19:13:41,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 19:13:41,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:13:42,092 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-21 19:13:42,092 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:13:42,622 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-21 19:13:42,622 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:13:42,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1934721311] [2023-12-21 19:13:42,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1934721311] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 19:13:42,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:13:42,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-21 19:13:42,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037718034] [2023-12-21 19:13:42,623 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:13:42,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 19:13:42,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:13:42,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 19:13:42,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-12-21 19:13:42,625 INFO L87 Difference]: Start difference. First operand 66 states and 80 transitions. Second operand has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 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 19:13:45,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:13:45,784 INFO L93 Difference]: Finished difference Result 233 states and 288 transitions. [2023-12-21 19:13:45,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 19:13:45,785 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 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 35 [2023-12-21 19:13:45,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:13:45,786 INFO L225 Difference]: With dead ends: 233 [2023-12-21 19:13:45,786 INFO L226 Difference]: Without dead ends: 169 [2023-12-21 19:13:45,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=479, Invalid=853, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 19:13:45,788 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 601 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-21 19:13:45,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 473 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-21 19:13:45,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-12-21 19:13:45,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 126. [2023-12-21 19:13:45,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.216) internal successors, (152), 125 states have internal predecessors, (152), 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 19:13:45,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 152 transitions. [2023-12-21 19:13:45,823 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 152 transitions. Word has length 35 [2023-12-21 19:13:45,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:13:45,823 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 152 transitions. [2023-12-21 19:13:45,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 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 19:13:45,825 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 152 transitions. [2023-12-21 19:13:45,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-21 19:13:45,828 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:13:45,828 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:13:45,838 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 19:13:46,035 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 19:13:46,036 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:13:46,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:13:46,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1067390244, now seen corresponding path program 3 times [2023-12-21 19:13:46,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:13:46,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1253152739] [2023-12-21 19:13:46,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 19:13:46,037 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 19:13:46,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:13:46,038 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 19:13:46,038 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 19:13:46,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-21 19:13:46,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 19:13:46,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 19:13:46,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:13:46,324 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2023-12-21 19:13:46,324 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:13:46,443 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2023-12-21 19:13:46,443 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:13:46,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1253152739] [2023-12-21 19:13:46,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1253152739] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 19:13:46,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:13:46,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-21 19:13:46,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42991178] [2023-12-21 19:13:46,444 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:13:46,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 19:13:46,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:13:46,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 19:13:46,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 19:13:46,445 INFO L87 Difference]: Start difference. First operand 126 states and 152 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 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 19:13:46,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:13:46,815 INFO L93 Difference]: Finished difference Result 589 states and 717 transitions. [2023-12-21 19:13:46,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 19:13:46,815 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 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 59 [2023-12-21 19:13:46,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:13:46,818 INFO L225 Difference]: With dead ends: 589 [2023-12-21 19:13:46,818 INFO L226 Difference]: Without dead ends: 490 [2023-12-21 19:13:46,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-12-21 19:13:46,819 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 117 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 19:13:46,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 37 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 19:13:46,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2023-12-21 19:13:46,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 276. [2023-12-21 19:13:46,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 1.12) internal successors, (308), 275 states have internal predecessors, (308), 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 19:13:46,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 308 transitions. [2023-12-21 19:13:46,878 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 308 transitions. Word has length 59 [2023-12-21 19:13:46,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:13:46,879 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 308 transitions. [2023-12-21 19:13:46,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 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 19:13:46,879 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 308 transitions. [2023-12-21 19:13:46,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-21 19:13:46,881 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:13:46,882 INFO L195 NwaCegarLoop]: trace histogram [88, 88, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:13:46,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-21 19:13:47,084 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 19:13:47,085 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:13:47,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:13:47,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1557367024, now seen corresponding path program 4 times [2023-12-21 19:13:47,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:13:47,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1549969761] [2023-12-21 19:13:47,087 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 19:13:47,088 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 19:13:47,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:13:47,089 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 19:13:47,107 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 19:13:47,645 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 19:13:47,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 19:13:47,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 958 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-21 19:13:47,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:13:48,105 INFO L134 CoverageAnalysis]: Checked inductivity of 8404 backedges. 1591 proven. 253 refuted. 0 times theorem prover too weak. 6560 trivial. 0 not checked. [2023-12-21 19:13:48,105 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:13:49,774 INFO L134 CoverageAnalysis]: Checked inductivity of 8404 backedges. 1591 proven. 253 refuted. 0 times theorem prover too weak. 6560 trivial. 0 not checked. [2023-12-21 19:13:49,774 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:13:49,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1549969761] [2023-12-21 19:13:49,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1549969761] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 19:13:49,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:13:49,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 49 [2023-12-21 19:13:49,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827157081] [2023-12-21 19:13:49,775 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:13:49,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-21 19:13:49,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:13:49,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-21 19:13:49,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=1777, Unknown=0, NotChecked=0, Total=2450 [2023-12-21 19:13:49,778 INFO L87 Difference]: Start difference. First operand 276 states and 308 transitions. Second operand has 50 states, 50 states have (on average 1.32) internal successors, (66), 49 states have internal predecessors, (66), 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 19:14:01,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:14:01,387 INFO L93 Difference]: Finished difference Result 882 states and 1140 transitions. [2023-12-21 19:14:01,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-21 19:14:01,388 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.32) internal successors, (66), 49 states have internal predecessors, (66), 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 209 [2023-12-21 19:14:01,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:14:01,390 INFO L225 Difference]: With dead ends: 882 [2023-12-21 19:14:01,390 INFO L226 Difference]: Without dead ends: 631 [2023-12-21 19:14:01,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 828 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=1823, Invalid=3433, Unknown=0, NotChecked=0, Total=5256 [2023-12-21 19:14:01,394 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 2554 mSDsluCounter, 1719 mSDsCounter, 0 mSdLazyCounter, 2427 mSolverCounterSat, 1134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2554 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 3561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1134 IncrementalHoareTripleChecker+Valid, 2427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-21 19:14:01,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2554 Valid, 1798 Invalid, 3561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1134 Valid, 2427 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-12-21 19:14:01,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2023-12-21 19:14:01,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 540. [2023-12-21 19:14:01,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 539 states have (on average 1.1057513914656771) internal successors, (596), 539 states have internal predecessors, (596), 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 19:14:01,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 596 transitions. [2023-12-21 19:14:01,475 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 596 transitions. Word has length 209 [2023-12-21 19:14:01,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:14:01,475 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 596 transitions. [2023-12-21 19:14:01,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.32) internal successors, (66), 49 states have internal predecessors, (66), 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 19:14:01,475 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 596 transitions. [2023-12-21 19:14:01,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2023-12-21 19:14:01,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:14:01,481 INFO L195 NwaCegarLoop]: trace histogram [184, 184, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:14:01,515 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 19:14:01,707 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 19:14:01,708 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:14:01,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:14:01,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1187030256, now seen corresponding path program 5 times [2023-12-21 19:14:01,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:14:01,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1035769437] [2023-12-21 19:14:01,710 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 19:14:01,710 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 19:14:01,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:14:01,711 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:14:01,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-21 19:20:41,019 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 74 check-sat command(s) [2023-12-21 19:20:41,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 19:20:41,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 1918 conjuncts, 75 conjunts are in the unsatisfiable core [2023-12-21 19:20:41,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:20:42,689 INFO L134 CoverageAnalysis]: Checked inductivity of 35188 backedges. 11054 proven. 1081 refuted. 0 times theorem prover too weak. 23053 trivial. 0 not checked. [2023-12-21 19:20:42,689 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:20:53,067 INFO L134 CoverageAnalysis]: Checked inductivity of 35188 backedges. 17161 proven. 4694 refuted. 0 times theorem prover too weak. 13333 trivial. 0 not checked. [2023-12-21 19:20:53,067 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:20:53,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1035769437] [2023-12-21 19:20:53,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1035769437] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 19:20:53,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:20:53,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 74] total 122 [2023-12-21 19:20:53,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511998171] [2023-12-21 19:20:53,068 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:20:53,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2023-12-21 19:20:53,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:20:53,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2023-12-21 19:20:53,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2596, Invalid=12410, Unknown=0, NotChecked=0, Total=15006 [2023-12-21 19:20:53,073 INFO L87 Difference]: Start difference. First operand 540 states and 596 transitions. Second operand has 123 states, 123 states have (on average 1.2764227642276422) internal successors, (157), 122 states have internal predecessors, (157), 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 19:22:15,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:22:15,278 INFO L93 Difference]: Finished difference Result 1746 states and 2244 transitions. [2023-12-21 19:22:15,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2023-12-21 19:22:15,279 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 1.2764227642276422) internal successors, (157), 122 states have internal predecessors, (157), 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 401 [2023-12-21 19:22:15,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:22:15,283 INFO L225 Difference]: With dead ends: 1746 [2023-12-21 19:22:15,283 INFO L226 Difference]: Without dead ends: 1255 [2023-12-21 19:22:15,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 848 GetRequests, 679 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4607 ImplicationChecksByTransitivity, 61.6s TimeCoverageRelationStatistics Valid=7208, Invalid=21862, Unknown=0, NotChecked=0, Total=29070 [2023-12-21 19:22:15,290 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 9423 mSDsluCounter, 10502 mSDsCounter, 0 mSdLazyCounter, 14568 mSolverCounterSat, 4661 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9423 SdHoareTripleChecker+Valid, 10656 SdHoareTripleChecker+Invalid, 19229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4661 IncrementalHoareTripleChecker+Valid, 14568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.5s IncrementalHoareTripleChecker+Time [2023-12-21 19:22:15,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9423 Valid, 10656 Invalid, 19229 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4661 Valid, 14568 Invalid, 0 Unknown, 0 Unchecked, 30.5s Time] [2023-12-21 19:22:15,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2023-12-21 19:22:15,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1068. [2023-12-21 19:22:15,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1067 states have (on average 1.098406747891284) internal successors, (1172), 1067 states have internal predecessors, (1172), 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 19:22:15,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1172 transitions. [2023-12-21 19:22:15,409 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1172 transitions. Word has length 401 [2023-12-21 19:22:15,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:22:15,410 INFO L495 AbstractCegarLoop]: Abstraction has 1068 states and 1172 transitions. [2023-12-21 19:22:15,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 1.2764227642276422) internal successors, (157), 122 states have internal predecessors, (157), 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 19:22:15,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1172 transitions. [2023-12-21 19:22:15,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2023-12-21 19:22:15,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:22:15,429 INFO L195 NwaCegarLoop]: trace histogram [376, 376, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:22:15,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-21 19:22:15,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:22:15,656 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:22:15,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:22:15,657 INFO L85 PathProgramCache]: Analyzing trace with hash -982590224, now seen corresponding path program 6 times [2023-12-21 19:22:15,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:22:15,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [399232473] [2023-12-21 19:22:15,659 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 19:22:15,659 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 19:22:15,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:22:15,660 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:22:15,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process Received shutdown request... [2023-12-21 19:28:12,665 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 (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 19:28:12,665 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 19:28:13,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-21 19:28:13,866 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forcibly destroying the process [2023-12-21 19:28:13,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 137 [2023-12-21 19:28:13,930 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-21 19:28:13,932 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 19:28:13,932 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 786 with TraceHistMax 376,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [399232473] and IpTcStrategyModuleCvc4 [621472081]. [2023-12-21 19:28:13,936 INFO L445 BasicCegarLoop]: Path program histogram: [6, 2, 1, 1] [2023-12-21 19:28:13,937 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 19:28:13,939 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 07:28:13 BoogieIcfgContainer [2023-12-21 19:28:13,939 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 19:28:13,940 INFO L158 Benchmark]: Toolchain (without parser) took 877263.58ms. Allocated memory was 183.5MB in the beginning and 255.9MB in the end (delta: 72.4MB). Free memory was 136.0MB in the beginning and 180.6MB in the end (delta: -44.6MB). Peak memory consumption was 146.5MB. Max. memory is 8.0GB. [2023-12-21 19:28:13,940 INFO L158 Benchmark]: CDTParser took 0.57ms. Allocated memory is still 183.5MB. Free memory is still 138.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 19:28:13,940 INFO L158 Benchmark]: CACSL2BoogieTranslator took 218.31ms. Allocated memory is still 183.5MB. Free memory was 136.0MB in the beginning and 124.1MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 19:28:13,940 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.98ms. Allocated memory is still 183.5MB. Free memory was 124.1MB in the beginning and 122.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 19:28:13,940 INFO L158 Benchmark]: Boogie Preprocessor took 41.47ms. Allocated memory is still 183.5MB. Free memory was 122.4MB in the beginning and 120.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 19:28:13,941 INFO L158 Benchmark]: RCFGBuilder took 387.68ms. Allocated memory is still 183.5MB. Free memory was 120.3MB in the beginning and 105.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-21 19:28:13,941 INFO L158 Benchmark]: TraceAbstraction took 876578.30ms. Allocated memory was 183.5MB in the beginning and 255.9MB in the end (delta: 72.4MB). Free memory was 104.9MB in the beginning and 180.6MB in the end (delta: -75.6MB). Peak memory consumption was 116.1MB. Max. memory is 8.0GB. [2023-12-21 19:28:13,942 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57ms. Allocated memory is still 183.5MB. Free memory is still 138.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 218.31ms. Allocated memory is still 183.5MB. Free memory was 136.0MB in the beginning and 124.1MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.98ms. Allocated memory is still 183.5MB. Free memory was 124.1MB in the beginning and 122.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 41.47ms. Allocated memory is still 183.5MB. Free memory was 122.4MB in the beginning and 120.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 387.68ms. Allocated memory is still 183.5MB. Free memory was 120.3MB in the beginning and 105.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 876578.30ms. Allocated memory was 183.5MB in the beginning and 255.9MB in the end (delta: 72.4MB). Free memory was 104.9MB in the beginning and 180.6MB in the end (delta: -75.6MB). Peak memory consumption was 116.1MB. 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: 7]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 7). Cancelled while NwaCegarLoop was analyzing trace of length 786 with TraceHistMax 376,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [399232473] and IpTcStrategyModuleCvc4 [621472081]. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 876.5s, OverallIterations: 10, TraceHistogramMax: 376, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 99.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13119 SdHoareTripleChecker+Valid, 41.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13119 mSDsluCounter, 13194 SdHoareTripleChecker+Invalid, 36.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12821 mSDsCounter, 6283 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17965 IncrementalHoareTripleChecker+Invalid, 24248 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6283 mSolverCounterUnsat, 373 mSDtfsCounter, 17965 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1593 GetRequests, 1280 SyntacticMatches, 0 SemanticMatches, 313 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5696 ImplicationChecksByTransitivity, 70.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1068occurred in iteration=9, InterpolantAutomatonStates: 210, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 601 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 399.7s SatisfiabilityAnalysisTime, 15.7s InterpolantComputationTime, 777 NumberOfCodeBlocks, 726 NumberOfCodeBlocksAsserted, 84 NumberOfCheckSat, 1502 ConstructedInterpolants, 0 QuantifiedInterpolants, 4052 SizeOfPredicates, 0 NumberOfNonLiveVariables, 3375 ConjunctsInSsa, 137 ConjunctsInUnsatCore, 15 InterpolantComputations, 3 PerfectInterpolantSequences, 82069/88484 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