/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-cav19/array_init_pair_symmetr2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 07:09:55,016 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 07:09:55,110 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 07:09:55,115 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 07:09:55,115 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 07:09:55,151 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 07:09:55,152 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 07:09:55,153 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 07:09:55,154 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 07:09:55,157 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 07:09:55,157 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 07:09:55,158 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 07:09:55,158 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 07:09:55,160 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 07:09:55,160 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 07:09:55,160 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 07:09:55,161 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 07:09:55,161 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 07:09:55,161 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 07:09:55,161 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 07:09:55,161 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 07:09:55,162 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 07:09:55,162 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 07:09:55,162 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 07:09:55,162 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 07:09:55,162 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 07:09:55,163 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 07:09:55,163 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 07:09:55,163 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 07:09:55,163 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 07:09:55,164 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 07:09:55,164 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 07:09:55,165 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 07:09:55,165 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 07:09:55,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 07:09:55,165 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 07:09:55,166 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 07:09:55,166 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 07:09:55,166 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 07:09:55,166 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 07:09:55,166 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 07:09:55,167 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 07:09:55,167 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 07:09:55,167 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 07:09:55,168 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 07:09:55,168 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 07:09:55,168 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 07:09:55,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 07:09:55,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 07:09:55,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 07:09:55,457 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 07:09:55,457 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 07:09:55,459 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-cav19/array_init_pair_symmetr2.c [2023-12-16 07:09:56,560 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 07:09:56,715 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 07:09:56,715 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-cav19/array_init_pair_symmetr2.c [2023-12-16 07:09:56,721 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c176a7784/326a02cbd60b44f0b22a25e3445edb18/FLAG3389fa2ac [2023-12-16 07:09:56,735 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c176a7784/326a02cbd60b44f0b22a25e3445edb18 [2023-12-16 07:09:56,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 07:09:56,738 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 07:09:56,739 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 07:09:56,739 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 07:09:56,747 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 07:09:56,748 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:09:56" (1/1) ... [2023-12-16 07:09:56,749 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d9fc747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:09:56, skipping insertion in model container [2023-12-16 07:09:56,749 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:09:56" (1/1) ... [2023-12-16 07:09:56,769 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 07:09:56,896 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-cav19/array_init_pair_symmetr2.c[415,428] [2023-12-16 07:09:56,915 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 07:09:56,925 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 07:09:56,937 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-cav19/array_init_pair_symmetr2.c[415,428] [2023-12-16 07:09:56,944 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 07:09:56,956 INFO L206 MainTranslator]: Completed translation [2023-12-16 07:09:56,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:09:56 WrapperNode [2023-12-16 07:09:56,957 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 07:09:56,958 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 07:09:56,958 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 07:09:56,958 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 07:09:56,963 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:09:56" (1/1) ... [2023-12-16 07:09:56,972 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:09:56" (1/1) ... [2023-12-16 07:09:56,989 INFO L138 Inliner]: procedures = 17, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 76 [2023-12-16 07:09:56,989 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 07:09:56,990 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 07:09:56,990 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 07:09:56,990 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 07:09:56,999 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:09:56" (1/1) ... [2023-12-16 07:09:56,999 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:09:56" (1/1) ... [2023-12-16 07:09:57,002 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:09:56" (1/1) ... [2023-12-16 07:09:57,015 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-12-16 07:09:57,016 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:09:56" (1/1) ... [2023-12-16 07:09:57,016 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:09:56" (1/1) ... [2023-12-16 07:09:57,023 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:09:56" (1/1) ... [2023-12-16 07:09:57,026 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:09:56" (1/1) ... [2023-12-16 07:09:57,028 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:09:56" (1/1) ... [2023-12-16 07:09:57,029 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:09:56" (1/1) ... [2023-12-16 07:09:57,031 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 07:09:57,032 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 07:09:57,032 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 07:09:57,032 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 07:09:57,033 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:09:56" (1/1) ... [2023-12-16 07:09:57,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 07:09:57,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 07:09:57,067 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) [2023-12-16 07:09:57,099 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 [2023-12-16 07:09:57,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 07:09:57,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 07:09:57,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-16 07:09:57,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-16 07:09:57,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-16 07:09:57,108 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 07:09:57,108 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 07:09:57,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-16 07:09:57,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-16 07:09:57,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-16 07:09:57,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-16 07:09:57,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-16 07:09:57,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 07:09:57,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 07:09:57,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-16 07:09:57,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-16 07:09:57,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-16 07:09:57,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-16 07:09:57,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-16 07:09:57,179 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 07:09:57,181 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 07:09:57,319 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 07:09:57,378 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 07:09:57,378 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-16 07:09:57,378 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:09:57 BoogieIcfgContainer [2023-12-16 07:09:57,378 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 07:09:57,381 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 07:09:57,381 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 07:09:57,384 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 07:09:57,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 07:09:56" (1/3) ... [2023-12-16 07:09:57,385 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58b332a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:09:57, skipping insertion in model container [2023-12-16 07:09:57,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:09:56" (2/3) ... [2023-12-16 07:09:57,385 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58b332a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:09:57, skipping insertion in model container [2023-12-16 07:09:57,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:09:57" (3/3) ... [2023-12-16 07:09:57,386 INFO L112 eAbstractionObserver]: Analyzing ICFG array_init_pair_symmetr2.c [2023-12-16 07:09:57,402 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 07:09:57,403 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 07:09:57,434 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 07:09:57,439 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;@4b78b1f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 07:09:57,439 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 07:09:57,442 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 07:09:57,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-16 07:09:57,449 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:09:57,449 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:09:57,450 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:09:57,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:09:57,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1394429076, now seen corresponding path program 1 times [2023-12-16 07:09:57,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:09:57,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1767652203] [2023-12-16 07:09:57,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:09:57,469 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 [2023-12-16 07:09:57,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:09:57,472 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) [2023-12-16 07:09:57,474 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 [2023-12-16 07:09:57,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:09:57,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 07:09:57,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:09:57,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 07:09:57,656 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:09:57,656 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:09:57,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1767652203] [2023-12-16 07:09:57,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1767652203] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:09:57,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:09:57,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 07:09:57,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114113644] [2023-12-16 07:09:57,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:09:57,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 07:09:57,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:09:57,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 07:09:57,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 07:09:57,694 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-12-16 07:09:57,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:09:57,780 INFO L93 Difference]: Finished difference Result 44 states and 73 transitions. [2023-12-16 07:09:57,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 07:09:57,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2023-12-16 07:09:57,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:09:57,789 INFO L225 Difference]: With dead ends: 44 [2023-12-16 07:09:57,789 INFO L226 Difference]: Without dead ends: 23 [2023-12-16 07:09:57,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 07:09:57,796 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 1 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 27 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 [2023-12-16 07:09:57,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 27 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 07:09:57,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-16 07:09:57,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2023-12-16 07:09:57,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 07:09:57,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2023-12-16 07:09:57,838 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 8 [2023-12-16 07:09:57,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:09:57,839 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2023-12-16 07:09:57,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-12-16 07:09:57,840 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-12-16 07:09:57,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-16 07:09:57,842 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:09:57,842 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:09:57,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-16 07:09:58,045 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 [2023-12-16 07:09:58,045 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:09:58,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:09:58,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1234834936, now seen corresponding path program 1 times [2023-12-16 07:09:58,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:09:58,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [506971633] [2023-12-16 07:09:58,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:09:58,047 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 [2023-12-16 07:09:58,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:09:58,049 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) [2023-12-16 07:09:58,056 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 [2023-12-16 07:09:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:09:58,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 07:09:58,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:09:58,286 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 07:09:58,286 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:09:58,379 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 07:09:58,379 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:09:58,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [506971633] [2023-12-16 07:09:58,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [506971633] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:09:58,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:09:58,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-16 07:09:58,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290073414] [2023-12-16 07:09:58,380 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:09:58,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 07:09:58,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:09:58,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 07:09:58,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 07:09:58,383 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 07:09:58,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:09:58,656 INFO L93 Difference]: Finished difference Result 57 states and 78 transitions. [2023-12-16 07:09:58,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 07:09:58,657 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 25 [2023-12-16 07:09:58,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:09:58,658 INFO L225 Difference]: With dead ends: 57 [2023-12-16 07:09:58,658 INFO L226 Difference]: Without dead ends: 49 [2023-12-16 07:09:58,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-12-16 07:09:58,660 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 49 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 07:09:58,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 35 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 07:09:58,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-16 07:09:58,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2023-12-16 07:09:58,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-16 07:09:58,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 51 transitions. [2023-12-16 07:09:58,672 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 51 transitions. Word has length 25 [2023-12-16 07:09:58,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:09:58,672 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 51 transitions. [2023-12-16 07:09:58,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 07:09:58,672 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 51 transitions. [2023-12-16 07:09:58,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-16 07:09:58,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:09:58,675 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:09:58,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-16 07:09:58,877 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 [2023-12-16 07:09:58,878 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:09:58,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:09:58,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1525972372, now seen corresponding path program 1 times [2023-12-16 07:09:58,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:09:58,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1738347167] [2023-12-16 07:09:58,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:09:58,880 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 [2023-12-16 07:09:58,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:09:58,881 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) [2023-12-16 07:09:58,882 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 [2023-12-16 07:09:58,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:09:59,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 07:09:59,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:09:59,229 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-12-16 07:09:59,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:09:59,468 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-12-16 07:09:59,469 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:09:59,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1738347167] [2023-12-16 07:09:59,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1738347167] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:09:59,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:09:59,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-16 07:09:59,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506052656] [2023-12-16 07:09:59,470 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:09:59,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-16 07:09:59,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:09:59,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-16 07:09:59,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-12-16 07:09:59,472 INFO L87 Difference]: Start difference. First operand 38 states and 51 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 8 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2023-12-16 07:10:00,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:10:00,271 INFO L93 Difference]: Finished difference Result 127 states and 171 transitions. [2023-12-16 07:10:00,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 07:10:00,273 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 8 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) Word has length 80 [2023-12-16 07:10:00,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:10:00,275 INFO L225 Difference]: With dead ends: 127 [2023-12-16 07:10:00,275 INFO L226 Difference]: Without dead ends: 115 [2023-12-16 07:10:00,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=188, Unknown=0, NotChecked=0, Total=306 [2023-12-16 07:10:00,276 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 196 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 07:10:00,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 110 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 07:10:00,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-12-16 07:10:00,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 74. [2023-12-16 07:10:00,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 states have internal predecessors, (45), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-16 07:10:00,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2023-12-16 07:10:00,298 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 80 [2023-12-16 07:10:00,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:10:00,299 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2023-12-16 07:10:00,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 8 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2023-12-16 07:10:00,310 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2023-12-16 07:10:00,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-16 07:10:00,315 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:10:00,315 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:10:00,321 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 [2023-12-16 07:10:00,516 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 [2023-12-16 07:10:00,517 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:10:00,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:10:00,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1608222956, now seen corresponding path program 2 times [2023-12-16 07:10:00,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:10:00,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334094912] [2023-12-16 07:10:00,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 07:10:00,519 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 [2023-12-16 07:10:00,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:10:00,520 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) [2023-12-16 07:10:00,523 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 [2023-12-16 07:10:00,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 07:10:00,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 07:10:00,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 07:10:00,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:10:01,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2030 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 1795 trivial. 0 not checked. [2023-12-16 07:10:01,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:10:01,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2030 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 1795 trivial. 0 not checked. [2023-12-16 07:10:01,953 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:10:01,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334094912] [2023-12-16 07:10:01,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1334094912] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:10:01,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:10:01,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-16 07:10:01,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923292472] [2023-12-16 07:10:01,953 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:10:01,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-16 07:10:01,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:10:01,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-16 07:10:01,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=421, Unknown=0, NotChecked=0, Total=600 [2023-12-16 07:10:01,956 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. Second operand has 25 states, 25 states have (on average 2.28) internal successors, (57), 25 states have internal predecessors, (57), 20 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (60), 20 states have call predecessors, (60), 20 states have call successors, (60) [2023-12-16 07:10:04,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:10:04,909 INFO L93 Difference]: Finished difference Result 265 states and 357 transitions. [2023-12-16 07:10:04,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-16 07:10:04,910 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.28) internal successors, (57), 25 states have internal predecessors, (57), 20 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (60), 20 states have call predecessors, (60), 20 states have call successors, (60) Word has length 188 [2023-12-16 07:10:04,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:10:04,913 INFO L225 Difference]: With dead ends: 265 [2023-12-16 07:10:04,913 INFO L226 Difference]: Without dead ends: 247 [2023-12-16 07:10:04,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=454, Invalid=806, Unknown=0, NotChecked=0, Total=1260 [2023-12-16 07:10:04,915 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 763 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 1450 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 1831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 1450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:10:04,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [766 Valid, 431 Invalid, 1831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [381 Valid, 1450 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-16 07:10:04,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-12-16 07:10:04,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 146. [2023-12-16 07:10:04,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 78 states have (on average 1.0384615384615385) internal successors, (81), 78 states have internal predecessors, (81), 66 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-16 07:10:04,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 213 transitions. [2023-12-16 07:10:04,951 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 213 transitions. Word has length 188 [2023-12-16 07:10:04,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:10:04,952 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 213 transitions. [2023-12-16 07:10:04,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.28) internal successors, (57), 25 states have internal predecessors, (57), 20 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (60), 20 states have call predecessors, (60), 20 states have call successors, (60) [2023-12-16 07:10:04,953 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 213 transitions. [2023-12-16 07:10:04,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2023-12-16 07:10:04,961 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:10:04,961 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:10:04,969 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 [2023-12-16 07:10:05,169 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 [2023-12-16 07:10:05,170 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:10:05,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:10:05,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1358804460, now seen corresponding path program 3 times [2023-12-16 07:10:05,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:10:05,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1139026424] [2023-12-16 07:10:05,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 07:10:05,172 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 [2023-12-16 07:10:05,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:10:05,175 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) [2023-12-16 07:10:05,203 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 [2023-12-16 07:10:05,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2023-12-16 07:10:05,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 07:10:05,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-16 07:10:05,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:10:06,716 INFO L134 CoverageAnalysis]: Checked inductivity of 10010 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 9757 trivial. 0 not checked. [2023-12-16 07:10:06,716 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:10:08,920 INFO L134 CoverageAnalysis]: Checked inductivity of 10010 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 9757 trivial. 0 not checked. [2023-12-16 07:10:08,920 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:10:08,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1139026424] [2023-12-16 07:10:08,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1139026424] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:10:08,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:10:08,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 26] total 50 [2023-12-16 07:10:08,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453288825] [2023-12-16 07:10:08,921 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:10:08,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-16 07:10:08,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:10:08,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-16 07:10:08,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=1777, Unknown=0, NotChecked=0, Total=2450 [2023-12-16 07:10:08,925 INFO L87 Difference]: Start difference. First operand 146 states and 213 transitions. Second operand has 50 states, 50 states have (on average 1.32) internal successors, (66), 50 states have internal predecessors, (66), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 07:10:22,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:10:22,607 INFO L93 Difference]: Finished difference Result 541 states and 729 transitions. [2023-12-16 07:10:22,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-16 07:10:22,607 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.32) internal successors, (66), 50 states have internal predecessors, (66), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 404 [2023-12-16 07:10:22,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:10:22,612 INFO L225 Difference]: With dead ends: 541 [2023-12-16 07:10:22,612 INFO L226 Difference]: Without dead ends: 511 [2023-12-16 07:10:22,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 758 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 851 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=1873, Invalid=3529, Unknown=0, NotChecked=0, Total=5402 [2023-12-16 07:10:22,615 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 2802 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 6056 mSolverCounterSat, 2688 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2871 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 8744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2688 IncrementalHoareTripleChecker+Valid, 6056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-12-16 07:10:22,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2871 Valid, 1727 Invalid, 8744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2688 Valid, 6056 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-12-16 07:10:22,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2023-12-16 07:10:22,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 290. [2023-12-16 07:10:22,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 150 states have (on average 1.02) internal successors, (153), 150 states have internal predecessors, (153), 138 states have call successors, (138), 1 states have call predecessors, (138), 1 states have return successors, (138), 138 states have call predecessors, (138), 138 states have call successors, (138) [2023-12-16 07:10:22,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 429 transitions. [2023-12-16 07:10:22,664 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 429 transitions. Word has length 404 [2023-12-16 07:10:22,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:10:22,666 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 429 transitions. [2023-12-16 07:10:22,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.32) internal successors, (66), 50 states have internal predecessors, (66), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 07:10:22,666 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 429 transitions. [2023-12-16 07:10:22,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 837 [2023-12-16 07:10:22,685 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:10:22,685 INFO L195 NwaCegarLoop]: trace histogram [138, 138, 138, 46, 46, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:10:22,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-16 07:10:22,893 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 [2023-12-16 07:10:22,894 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:10:22,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:10:22,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1072336876, now seen corresponding path program 4 times [2023-12-16 07:10:22,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:10:22,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1219501896] [2023-12-16 07:10:22,896 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 07:10:22,897 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 [2023-12-16 07:10:22,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:10:22,898 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) [2023-12-16 07:10:22,932 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 [2023-12-16 07:10:23,586 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 07:10:23,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 07:10:23,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 1608 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-16 07:10:23,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:10:26,067 INFO L134 CoverageAnalysis]: Checked inductivity of 44114 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 38893 trivial. 0 not checked. [2023-12-16 07:10:26,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:10:32,649 INFO L134 CoverageAnalysis]: Checked inductivity of 44114 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 38893 trivial. 0 not checked. [2023-12-16 07:10:32,649 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:10:32,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1219501896] [2023-12-16 07:10:32,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1219501896] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:10:32,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:10:32,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 97 [2023-12-16 07:10:32,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117781957] [2023-12-16 07:10:32,650 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:10:32,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2023-12-16 07:10:32,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:10:32,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2023-12-16 07:10:32,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2447, Invalid=6865, Unknown=0, NotChecked=0, Total=9312 [2023-12-16 07:10:32,658 INFO L87 Difference]: Start difference. First operand 290 states and 429 transitions. Second operand has 97 states, 97 states have (on average 2.0721649484536084) internal successors, (201), 97 states have internal predecessors, (201), 92 states have call successors, (276), 2 states have call predecessors, (276), 2 states have return successors, (276), 92 states have call predecessors, (276), 92 states have call successors, (276) Received shutdown request... [2023-12-16 07:11:02,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-16 07:11:02,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1685 GetRequests, 1575 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 24.7s TimeCoverageRelationStatistics Valid=3805, Invalid=8405, Unknown=0, NotChecked=0, Total=12210 [2023-12-16 07:11:02,204 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 90 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 17927 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 18015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 17927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2023-12-16 07:11:02,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 288 Invalid, 18015 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 17927 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2023-12-16 07:11:02,206 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 07:11:02,209 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 (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 07:11:02,210 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 [2023-12-16 07:11:02,228 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 (7)] Ended with exit code 0 [2023-12-16 07:11:02,410 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 [2023-12-16 07:11:02,411 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (290states) and FLOYD_HOARE automaton (currently 64 states, 97 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 111 known predicates. [2023-12-16 07:11:02,414 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2023-12-16 07:11:02,417 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 07:11:02,419 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 07:11:02 BoogieIcfgContainer [2023-12-16 07:11:02,419 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 07:11:02,419 INFO L158 Benchmark]: Toolchain (without parser) took 65681.23ms. Allocated memory was 211.8MB in the beginning and 254.8MB in the end (delta: 43.0MB). Free memory was 171.8MB in the beginning and 201.1MB in the end (delta: -29.3MB). Peak memory consumption was 138.7MB. Max. memory is 8.0GB. [2023-12-16 07:11:02,420 INFO L158 Benchmark]: CDTParser took 0.66ms. Allocated memory is still 211.8MB. Free memory is still 169.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 07:11:02,420 INFO L158 Benchmark]: CACSL2BoogieTranslator took 218.00ms. Allocated memory is still 211.8MB. Free memory was 171.6MB in the beginning and 160.0MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 07:11:02,420 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.48ms. Allocated memory is still 211.8MB. Free memory was 160.0MB in the beginning and 158.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 07:11:02,420 INFO L158 Benchmark]: Boogie Preprocessor took 41.25ms. Allocated memory is still 211.8MB. Free memory was 158.2MB in the beginning and 156.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 07:11:02,421 INFO L158 Benchmark]: RCFGBuilder took 346.66ms. Allocated memory is still 211.8MB. Free memory was 156.1MB in the beginning and 140.8MB in the end (delta: 15.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-16 07:11:02,421 INFO L158 Benchmark]: TraceAbstraction took 65038.07ms. Allocated memory was 211.8MB in the beginning and 254.8MB in the end (delta: 43.0MB). Free memory was 140.1MB in the beginning and 201.1MB in the end (delta: -61.0MB). Peak memory consumption was 107.3MB. Max. memory is 8.0GB. [2023-12-16 07:11:02,422 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66ms. Allocated memory is still 211.8MB. Free memory is still 169.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 218.00ms. Allocated memory is still 211.8MB. Free memory was 171.6MB in the beginning and 160.0MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.48ms. Allocated memory is still 211.8MB. Free memory was 160.0MB in the beginning and 158.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 41.25ms. Allocated memory is still 211.8MB. Free memory was 158.2MB in the beginning and 156.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 346.66ms. Allocated memory is still 211.8MB. Free memory was 156.1MB in the beginning and 140.8MB in the end (delta: 15.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 65038.07ms. Allocated memory was 211.8MB in the beginning and 254.8MB in the end (delta: 43.0MB). Free memory was 140.1MB in the beginning and 201.1MB in the end (delta: -61.0MB). Peak memory consumption was 107.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 8]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 8). Cancelled while NwaCegarLoop was constructing difference of abstraction (290states) and FLOYD_HOARE automaton (currently 64 states, 97 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 111 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 65.0s, OverallIterations: 6, TraceHistogramMax: 138, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 47.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3985 SdHoareTripleChecker+Valid, 19.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3901 mSDsluCounter, 2618 SdHoareTripleChecker+Invalid, 16.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2202 mSDsCounter, 3285 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 25879 IncrementalHoareTripleChecker+Invalid, 29164 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3285 mSolverCounterUnsat, 416 mSDtfsCounter, 25879 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3120 GetRequests, 2880 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3377 ImplicationChecksByTransitivity, 35.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=290occurred in iteration=5, InterpolantAutomatonStates: 98, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 378 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 14.2s InterpolantComputationTime, 1541 NumberOfCodeBlocks, 1245 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 3063 ConstructedInterpolants, 0 QuantifiedInterpolants, 9531 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2573 ConjunctsInSsa, 102 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 101462/112950 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