/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'cvc4 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1230.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 02:36:58,849 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 02:36:58,918 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-03 02:36:58,925 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 02:36:58,925 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 02:36:58,949 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 02:36:58,949 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 02:36:58,950 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 02:36:58,950 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 02:36:58,952 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 02:36:58,952 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 02:36:58,952 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 02:36:58,953 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 02:36:58,953 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 02:36:58,955 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 02:36:58,955 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 02:36:58,956 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 02:36:58,956 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 02:36:58,956 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 02:36:58,956 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 02:36:58,957 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 02:36:58,957 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 02:36:58,957 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 02:36:58,958 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 02:36:58,958 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 02:36:58,958 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 02:36:58,958 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 02:36:58,959 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 02:36:58,959 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 02:36:58,959 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 02:36:58,959 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 02:36:58,959 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 02:36:58,960 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 02:36:58,960 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 02:36:58,960 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 02:36:58,960 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 02:36:58,961 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 02:36:58,961 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 02:36:58,961 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 02:36:58,962 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 02:36:58,962 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 02:36:58,962 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 02:36:58,962 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 02:36:58,962 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 02:36:58,963 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-03 02:36:59,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 02:36:59,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 02:36:59,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 02:36:59,202 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 02:36:59,202 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 02:36:59,203 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1230.c [2024-11-03 02:37:00,562 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 02:37:00,721 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 02:37:00,721 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1230.c [2024-11-03 02:37:00,727 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee1243e6d/023366e8f4394d689b59b56338590253/FLAG96a01e9d2 [2024-11-03 02:37:01,133 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee1243e6d/023366e8f4394d689b59b56338590253 [2024-11-03 02:37:01,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 02:37:01,135 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 02:37:01,138 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 02:37:01,139 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 02:37:01,143 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 02:37:01,144 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:37:01" (1/1) ... [2024-11-03 02:37:01,145 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a52fd2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:01, skipping insertion in model container [2024-11-03 02:37:01,145 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:37:01" (1/1) ... [2024-11-03 02:37:01,164 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 02:37:01,323 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1230.c[1667,1680] [2024-11-03 02:37:01,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 02:37:01,341 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 02:37:01,360 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1230.c[1667,1680] [2024-11-03 02:37:01,361 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 02:37:01,378 INFO L204 MainTranslator]: Completed translation [2024-11-03 02:37:01,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:01 WrapperNode [2024-11-03 02:37:01,379 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 02:37:01,380 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 02:37:01,380 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 02:37:01,380 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 02:37:01,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:01" (1/1) ... [2024-11-03 02:37:01,392 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:01" (1/1) ... [2024-11-03 02:37:01,410 INFO L138 Inliner]: procedures = 21, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 43 [2024-11-03 02:37:01,410 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 02:37:01,411 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 02:37:01,411 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 02:37:01,411 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 02:37:01,420 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:01" (1/1) ... [2024-11-03 02:37:01,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:01" (1/1) ... [2024-11-03 02:37:01,423 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:01" (1/1) ... [2024-11-03 02:37:01,433 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-03 02:37:01,433 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:01" (1/1) ... [2024-11-03 02:37:01,434 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:01" (1/1) ... [2024-11-03 02:37:01,442 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:01" (1/1) ... [2024-11-03 02:37:01,445 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:01" (1/1) ... [2024-11-03 02:37:01,446 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:01" (1/1) ... [2024-11-03 02:37:01,448 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:01" (1/1) ... [2024-11-03 02:37:01,450 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 02:37:01,451 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 02:37:01,451 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 02:37:01,451 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 02:37:01,453 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:01" (1/1) ... [2024-11-03 02:37:01,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 02:37:01,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 02:37:01,481 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) [2024-11-03 02:37:01,493 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 [2024-11-03 02:37:01,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 02:37:01,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#0 [2024-11-03 02:37:01,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#1 [2024-11-03 02:37:01,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 02:37:01,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-03 02:37:01,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-03 02:37:01,517 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2024-11-03 02:37:01,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2024-11-03 02:37:01,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-03 02:37:01,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-03 02:37:01,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 02:37:01,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 02:37:01,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-03 02:37:01,592 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 02:37:01,594 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 02:37:01,809 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2024-11-03 02:37:01,809 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 02:37:01,823 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 02:37:01,823 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-03 02:37:01,824 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:37:01 BoogieIcfgContainer [2024-11-03 02:37:01,824 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 02:37:01,831 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 02:37:01,831 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 02:37:01,834 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 02:37:01,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:37:01" (1/3) ... [2024-11-03 02:37:01,835 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a93b8ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:37:01, skipping insertion in model container [2024-11-03 02:37:01,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:01" (2/3) ... [2024-11-03 02:37:01,836 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a93b8ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:37:01, skipping insertion in model container [2024-11-03 02:37:01,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:37:01" (3/3) ... [2024-11-03 02:37:01,837 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2024-11-03 02:37:01,852 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 02:37:01,852 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 02:37:01,897 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 02:37:01,903 INFO L333 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, 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;@2bb62bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 02:37:01,903 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 02:37:01,907 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-03 02:37:01,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-03 02:37:01,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:37:01,915 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 02:37:01,916 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:37:01,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:37:01,922 INFO L85 PathProgramCache]: Analyzing trace with hash -137544036, now seen corresponding path program 1 times [2024-11-03 02:37:01,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:37:01,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562439557] [2024-11-03 02:37:01,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:37:01,935 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:37:01,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:37:01,939 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:37:01,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-03 02:37:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:37:02,133 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 02:37:02,139 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:37:02,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 02:37:02,159 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:37:02,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 02:37:02,174 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:37:02,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562439557] [2024-11-03 02:37:02,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1562439557] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:37:02,176 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:37:02,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 02:37:02,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893672798] [2024-11-03 02:37:02,179 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:37:02,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 02:37:02,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:37:02,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 02:37:02,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 02:37:02,206 INFO L87 Difference]: Start difference. First operand has 23 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-03 02:37:02,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:37:02,225 INFO L93 Difference]: Finished difference Result 43 states and 62 transitions. [2024-11-03 02:37:02,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 02:37:02,227 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-11-03 02:37:02,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:37:02,233 INFO L225 Difference]: With dead ends: 43 [2024-11-03 02:37:02,233 INFO L226 Difference]: Without dead ends: 20 [2024-11-03 02:37:02,237 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 02:37:02,242 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 02:37:02,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 02:37:02,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-03 02:37:02,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-03 02:37:02,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-03 02:37:02,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2024-11-03 02:37:02,274 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 13 [2024-11-03 02:37:02,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:37:02,275 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2024-11-03 02:37:02,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-03 02:37:02,276 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2024-11-03 02:37:02,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-03 02:37:02,277 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:37:02,277 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 02:37:02,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-11-03 02:37:02,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:37:02,479 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:37:02,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:37:02,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1479426789, now seen corresponding path program 1 times [2024-11-03 02:37:02,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:37:02,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077763616] [2024-11-03 02:37:02,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:37:02,481 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:37:02,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:37:02,485 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:37:02,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-03 02:37:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:37:02,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 02:37:02,645 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:37:02,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 02:37:02,687 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:37:02,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 02:37:02,739 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:37:02,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077763616] [2024-11-03 02:37:02,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1077763616] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:37:02,739 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:37:02,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-03 02:37:02,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237679535] [2024-11-03 02:37:02,740 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:37:02,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 02:37:02,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:37:02,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 02:37:02,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-03 02:37:02,745 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-03 02:37:02,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:37:02,823 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2024-11-03 02:37:02,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 02:37:02,824 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2024-11-03 02:37:02,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:37:02,826 INFO L225 Difference]: With dead ends: 31 [2024-11-03 02:37:02,827 INFO L226 Difference]: Without dead ends: 26 [2024-11-03 02:37:02,827 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-03 02:37:02,829 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 02:37:02,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 02:37:02,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-03 02:37:02,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2024-11-03 02:37:02,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 02:37:02,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2024-11-03 02:37:02,841 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 14 [2024-11-03 02:37:02,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:37:02,842 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2024-11-03 02:37:02,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-03 02:37:02,842 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2024-11-03 02:37:02,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-03 02:37:02,843 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:37:02,844 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 02:37:02,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-03 02:37:03,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:37:03,045 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:37:03,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:37:03,046 INFO L85 PathProgramCache]: Analyzing trace with hash 628892788, now seen corresponding path program 1 times [2024-11-03 02:37:03,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:37:03,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271287770] [2024-11-03 02:37:03,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:37:03,047 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:37:03,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:37:03,048 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:37:03,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-03 02:37:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:37:03,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-03 02:37:03,270 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:37:03,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 02:37:03,389 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:37:03,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 02:37:03,476 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:37:03,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271287770] [2024-11-03 02:37:03,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [271287770] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:37:03,477 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:37:03,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2024-11-03 02:37:03,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808967994] [2024-11-03 02:37:03,477 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:37:03,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-03 02:37:03,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:37:03,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-03 02:37:03,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-03 02:37:03,479 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-03 02:37:03,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:37:03,614 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2024-11-03 02:37:03,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 02:37:03,615 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2024-11-03 02:37:03,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:37:03,616 INFO L225 Difference]: With dead ends: 28 [2024-11-03 02:37:03,616 INFO L226 Difference]: Without dead ends: 23 [2024-11-03 02:37:03,616 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-03 02:37:03,617 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 2 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 02:37:03,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 125 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 02:37:03,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-03 02:37:03,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2024-11-03 02:37:03,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-03 02:37:03,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2024-11-03 02:37:03,622 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 17 [2024-11-03 02:37:03,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:37:03,622 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-11-03 02:37:03,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-03 02:37:03,623 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2024-11-03 02:37:03,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-03 02:37:03,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:37:03,623 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 02:37:03,628 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-11-03 02:37:03,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:37:03,825 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:37:03,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:37:03,825 INFO L85 PathProgramCache]: Analyzing trace with hash 550124328, now seen corresponding path program 1 times [2024-11-03 02:37:03,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:37:03,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369963829] [2024-11-03 02:37:03,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:37:03,826 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:37:03,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:37:03,829 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:37:03,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-03 02:37:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:37:03,977 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 02:37:03,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:37:04,002 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-03 02:37:04,002 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:37:04,048 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-03 02:37:04,048 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:37:04,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369963829] [2024-11-03 02:37:04,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1369963829] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:37:04,049 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:37:04,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-03 02:37:04,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833621686] [2024-11-03 02:37:04,050 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:37:04,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 02:37:04,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:37:04,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 02:37:04,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-03 02:37:04,052 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 02:37:04,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:37:04,096 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2024-11-03 02:37:04,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 02:37:04,098 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 22 [2024-11-03 02:37:04,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:37:04,099 INFO L225 Difference]: With dead ends: 31 [2024-11-03 02:37:04,099 INFO L226 Difference]: Without dead ends: 24 [2024-11-03 02:37:04,099 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-03 02:37:04,100 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 02:37:04,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 65 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 02:37:04,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-03 02:37:04,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2024-11-03 02:37:04,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-03 02:37:04,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2024-11-03 02:37:04,109 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 22 [2024-11-03 02:37:04,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:37:04,109 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2024-11-03 02:37:04,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 02:37:04,110 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2024-11-03 02:37:04,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-03 02:37:04,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:37:04,111 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 02:37:04,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2024-11-03 02:37:04,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:37:04,312 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:37:04,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:37:04,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1345719207, now seen corresponding path program 1 times [2024-11-03 02:37:04,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:37:04,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994987370] [2024-11-03 02:37:04,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:37:04,313 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:37:04,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:37:04,314 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:37:04,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-03 02:37:04,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:37:04,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-03 02:37:04,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:37:04,730 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-03 02:37:04,730 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:37:04,838 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-03 02:37:04,838 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:37:04,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994987370] [2024-11-03 02:37:04,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1994987370] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:37:04,839 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:37:04,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2024-11-03 02:37:04,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582531597] [2024-11-03 02:37:04,839 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:37:04,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-03 02:37:04,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:37:04,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-03 02:37:04,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-03 02:37:04,841 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 02:37:04,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:37:04,921 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2024-11-03 02:37:04,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 02:37:04,924 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2024-11-03 02:37:04,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:37:04,924 INFO L225 Difference]: With dead ends: 22 [2024-11-03 02:37:04,924 INFO L226 Difference]: Without dead ends: 0 [2024-11-03 02:37:04,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-03 02:37:04,926 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 02:37:04,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 02:37:04,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-03 02:37:04,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-03 02:37:04,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2024-11-03 02:37:04,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-03 02:37:04,930 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2024-11-03 02:37:04,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:37:04,931 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-03 02:37:04,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 02:37:04,932 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-03 02:37:04,932 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-03 02:37:04,935 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-03 02:37:04,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2024-11-03 02:37:05,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:37:05,139 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-03 02:37:05,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-03 02:37:05,170 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-03 02:37:05,188 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:37:05 BoogieIcfgContainer [2024-11-03 02:37:05,188 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-03 02:37:05,189 INFO L158 Benchmark]: Toolchain (without parser) took 4053.21ms. Allocated memory was 204.5MB in the beginning and 348.1MB in the end (delta: 143.7MB). Free memory was 152.4MB in the beginning and 227.5MB in the end (delta: -75.1MB). Peak memory consumption was 69.3MB. Max. memory is 8.0GB. [2024-11-03 02:37:05,190 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 204.5MB. Free memory is still 159.8MB. There was no memory consumed. Max. memory is 8.0GB. [2024-11-03 02:37:05,190 INFO L158 Benchmark]: CACSL2BoogieTranslator took 241.01ms. Allocated memory is still 204.5MB. Free memory was 152.2MB in the beginning and 138.5MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2024-11-03 02:37:05,190 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.05ms. Allocated memory is still 204.5MB. Free memory was 138.5MB in the beginning and 136.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-11-03 02:37:05,190 INFO L158 Benchmark]: Boogie Preprocessor took 39.41ms. Allocated memory is still 204.5MB. Free memory was 136.8MB in the beginning and 134.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-11-03 02:37:05,191 INFO L158 Benchmark]: RCFGBuilder took 373.30ms. Allocated memory was 204.5MB in the beginning and 348.1MB in the end (delta: 143.7MB). Free memory was 134.5MB in the beginning and 317.7MB in the end (delta: -183.2MB). Peak memory consumption was 19.0MB. Max. memory is 8.0GB. [2024-11-03 02:37:05,191 INFO L158 Benchmark]: TraceAbstraction took 3357.74ms. Allocated memory is still 348.1MB. Free memory was 317.2MB in the beginning and 227.5MB in the end (delta: 89.7MB). Peak memory consumption was 89.1MB. Max. memory is 8.0GB. [2024-11-03 02:37:05,193 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 204.5MB. Free memory is still 159.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 241.01ms. Allocated memory is still 204.5MB. Free memory was 152.2MB in the beginning and 138.5MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.05ms. Allocated memory is still 204.5MB. Free memory was 138.5MB in the beginning and 136.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 39.41ms. Allocated memory is still 204.5MB. Free memory was 136.8MB in the beginning and 134.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 373.30ms. Allocated memory was 204.5MB in the beginning and 348.1MB in the end (delta: 143.7MB). Free memory was 134.5MB in the beginning and 317.7MB in the end (delta: -183.2MB). Peak memory consumption was 19.0MB. Max. memory is 8.0GB. * TraceAbstraction took 3357.74ms. Allocated memory is still 348.1MB. Free memory was 317.2MB in the beginning and 227.5MB in the end (delta: 89.7MB). Peak memory consumption was 89.1MB. 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 - PositiveResult [Line: 68]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.3s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 397 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 277 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 65 IncrementalHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 120 mSDtfsCounter, 65 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 176 GetRequests, 148 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 4 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 172 ConstructedInterpolants, 8 QuantifiedInterpolants, 298 SizeOfPredicates, 5 NumberOfNonLiveVariables, 331 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 24/24 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: null RESULT: Ultimate proved your program to be correct! [2024-11-03 02:37:05,224 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 Received shutdown request...