/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 bitwuzla -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1231.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 14:17:13,210 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 14:17:13,273 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 14:17:13,280 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 14:17:13,280 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 14:17:13,305 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 14:17:13,306 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 14:17:13,306 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 14:17:13,307 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 14:17:13,308 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 14:17:13,308 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 14:17:13,308 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 14:17:13,309 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 14:17:13,309 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 14:17:13,310 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 14:17:13,310 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 14:17:13,310 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 14:17:13,311 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 14:17:13,311 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 14:17:13,311 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 14:17:13,312 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 14:17:13,313 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 14:17:13,314 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 14:17:13,314 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 14:17:13,314 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 14:17:13,314 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 14:17:13,315 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 14:17:13,315 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 14:17:13,315 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 14:17:13,315 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 14:17:13,316 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 14:17:13,316 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 14:17:13,316 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 14:17:13,316 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 14:17:13,317 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 14:17:13,317 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 14:17:13,317 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 14:17:13,317 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 14:17:13,318 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 14:17:13,318 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 14:17:13,318 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 14:17:13,321 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 14:17:13,321 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 14:17:13,321 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 14:17:13,322 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-03 14:17:13,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 14:17:13,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 14:17:13,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 14:17:13,577 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 14:17:13,578 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 14:17:13,579 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1231.c [2024-11-03 14:17:14,936 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 14:17:15,091 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 14:17:15,092 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1231.c [2024-11-03 14:17:15,100 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9be5fc1ec/0abb60e9ad384df590af9da0b16b9caa/FLAGd8eee6c54 [2024-11-03 14:17:15,115 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9be5fc1ec/0abb60e9ad384df590af9da0b16b9caa [2024-11-03 14:17:15,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 14:17:15,118 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 14:17:15,120 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 14:17:15,120 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 14:17:15,126 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 14:17:15,127 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:17:15" (1/1) ... [2024-11-03 14:17:15,128 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12dd5a4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:15, skipping insertion in model container [2024-11-03 14:17:15,128 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:17:15" (1/1) ... [2024-11-03 14:17:15,150 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 14:17:15,328 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/float_req_bl_1231.c[1835,1848] [2024-11-03 14:17:15,332 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/float_req_bl_1231.c[1994,2007] [2024-11-03 14:17:15,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 14:17:15,345 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 14:17:15,364 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/float_req_bl_1231.c[1835,1848] [2024-11-03 14:17:15,365 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/float_req_bl_1231.c[1994,2007] [2024-11-03 14:17:15,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 14:17:15,381 INFO L204 MainTranslator]: Completed translation [2024-11-03 14:17:15,382 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:15 WrapperNode [2024-11-03 14:17:15,382 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 14:17:15,383 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 14:17:15,383 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 14:17:15,383 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 14:17:15,388 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:15" (1/1) ... [2024-11-03 14:17:15,397 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:15" (1/1) ... [2024-11-03 14:17:15,415 INFO L138 Inliner]: procedures = 22, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 96 [2024-11-03 14:17:15,415 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 14:17:15,416 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 14:17:15,416 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 14:17:15,416 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 14:17:15,425 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:15" (1/1) ... [2024-11-03 14:17:15,425 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:15" (1/1) ... [2024-11-03 14:17:15,429 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:15" (1/1) ... [2024-11-03 14:17:15,440 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 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 14:17:15,440 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:15" (1/1) ... [2024-11-03 14:17:15,440 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:15" (1/1) ... [2024-11-03 14:17:15,447 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:15" (1/1) ... [2024-11-03 14:17:15,450 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:15" (1/1) ... [2024-11-03 14:17:15,452 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:15" (1/1) ... [2024-11-03 14:17:15,453 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:15" (1/1) ... [2024-11-03 14:17:15,455 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 14:17:15,457 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 14:17:15,458 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 14:17:15,458 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 14:17:15,458 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:15" (1/1) ... [2024-11-03 14:17:15,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 14:17:15,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 14:17:15,490 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 14:17:15,495 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 14:17:15,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 14:17:15,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 14:17:15,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-03 14:17:15,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-03 14:17:15,522 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2024-11-03 14:17:15,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2024-11-03 14:17:15,522 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2024-11-03 14:17:15,523 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2024-11-03 14:17:15,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-03 14:17:15,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-03 14:17:15,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 14:17:15,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 14:17:15,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2024-11-03 14:17:15,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2024-11-03 14:17:15,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-03 14:17:15,625 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 14:17:15,627 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 14:17:15,915 INFO L? ?]: Removed 35 outVars from TransFormulas that were not future-live. [2024-11-03 14:17:15,916 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 14:17:15,930 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 14:17:15,931 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-03 14:17:15,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:17:15 BoogieIcfgContainer [2024-11-03 14:17:15,932 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 14:17:15,934 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 14:17:15,934 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 14:17:15,937 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 14:17:15,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:17:15" (1/3) ... [2024-11-03 14:17:15,937 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a711582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:17:15, skipping insertion in model container [2024-11-03 14:17:15,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:15" (2/3) ... [2024-11-03 14:17:15,938 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a711582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:17:15, skipping insertion in model container [2024-11-03 14:17:15,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:17:15" (3/3) ... [2024-11-03 14:17:15,939 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1231.c [2024-11-03 14:17:15,952 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 14:17:15,952 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-03 14:17:16,028 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 14:17:16,034 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;@76e52127, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 14:17:16,035 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-03 14:17:16,038 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 40 states have internal predecessors, (56), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-03 14:17:16,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-03 14:17:16,047 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:17:16,048 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:17:16,049 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:17:16,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:17:16,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1842866032, now seen corresponding path program 1 times [2024-11-03 14:17:16,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:17:16,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153108385] [2024-11-03 14:17:16,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:17:16,064 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:17:16,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:16,067 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 14:17:16,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-03 14:17:16,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:17:16,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 14:17:16,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:17:16,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 14:17:16,198 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:17:16,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-03 14:17:16,228 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:17:16,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153108385] [2024-11-03 14:17:16,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [153108385] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 14:17:16,229 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 14:17:16,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 14:17:16,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605164013] [2024-11-03 14:17:16,231 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 14:17:16,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 14:17:16,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:17:16,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 14:17:16,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 14:17:16,256 INFO L87 Difference]: Start difference. First operand has 53 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 40 states have internal predecessors, (56), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 14:17:16,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:17:16,282 INFO L93 Difference]: Finished difference Result 89 states and 128 transitions. [2024-11-03 14:17:16,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 14:17:16,284 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2024-11-03 14:17:16,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:17:16,292 INFO L225 Difference]: With dead ends: 89 [2024-11-03 14:17:16,293 INFO L226 Difference]: Without dead ends: 49 [2024-11-03 14:17:16,295 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 52 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 14:17:16,298 INFO L432 NwaCegarLoop]: 72 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, 72 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 14:17:16,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 14:17:16,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-03 14:17:16,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-11-03 14:17:16,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 36 states have internal predecessors, (47), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-03 14:17:16,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 67 transitions. [2024-11-03 14:17:16,333 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 67 transitions. Word has length 27 [2024-11-03 14:17:16,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:17:16,335 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 67 transitions. [2024-11-03 14:17:16,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 14:17:16,335 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 67 transitions. [2024-11-03 14:17:16,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-03 14:17:16,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:17:16,337 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:17:16,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-03 14:17:16,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:16,538 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:17:16,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:17:16,539 INFO L85 PathProgramCache]: Analyzing trace with hash -207460078, now seen corresponding path program 1 times [2024-11-03 14:17:16,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:17:16,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541654882] [2024-11-03 14:17:16,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:17:16,539 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:17:16,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:16,541 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 14:17:16,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-03 14:17:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:17:16,610 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 14:17:16,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:17:16,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 14:17:16,659 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:17:16,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-03 14:17:16,711 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:17:16,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541654882] [2024-11-03 14:17:16,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1541654882] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 14:17:16,712 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 14:17:16,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-03 14:17:16,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382669961] [2024-11-03 14:17:16,712 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 14:17:16,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 14:17:16,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:17:16,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 14:17:16,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-03 14:17:16,715 INFO L87 Difference]: Start difference. First operand 49 states and 67 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-03 14:17:16,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:17:16,764 INFO L93 Difference]: Finished difference Result 75 states and 101 transitions. [2024-11-03 14:17:16,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 14:17:16,765 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 28 [2024-11-03 14:17:16,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:17:16,767 INFO L225 Difference]: With dead ends: 75 [2024-11-03 14:17:16,767 INFO L226 Difference]: Without dead ends: 55 [2024-11-03 14:17:16,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 50 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 14:17:16,769 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 14:17:16,769 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 253 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 14:17:16,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-03 14:17:16,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2024-11-03 14:17:16,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 38 states have internal predecessors, (49), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2024-11-03 14:17:16,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2024-11-03 14:17:16,783 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 28 [2024-11-03 14:17:16,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:17:16,784 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2024-11-03 14:17:16,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-03 14:17:16,784 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2024-11-03 14:17:16,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-03 14:17:16,787 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:17:16,788 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:17:16,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0 [2024-11-03 14:17:16,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:16,989 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:17:16,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:17:16,990 INFO L85 PathProgramCache]: Analyzing trace with hash 523903832, now seen corresponding path program 1 times [2024-11-03 14:17:16,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:17:16,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592358119] [2024-11-03 14:17:16,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:17:16,991 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:17:16,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:16,994 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 14:17:16,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-03 14:17:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:17:17,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-03 14:17:17,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:17:17,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 14:17:17,298 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:17:17,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-03 14:17:17,489 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:17:17,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592358119] [2024-11-03 14:17:17,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [592358119] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 14:17:17,489 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 14:17:17,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 4] imperfect sequences [] total 9 [2024-11-03 14:17:17,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803687663] [2024-11-03 14:17:17,490 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 14:17:17,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-03 14:17:17,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:17:17,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-03 14:17:17,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-03 14:17:17,492 INFO L87 Difference]: Start difference. First operand 52 states and 71 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-03 14:17:17,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:17:17,648 INFO L93 Difference]: Finished difference Result 91 states and 123 transitions. [2024-11-03 14:17:17,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-03 14:17:17,648 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 31 [2024-11-03 14:17:17,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:17:17,651 INFO L225 Difference]: With dead ends: 91 [2024-11-03 14:17:17,651 INFO L226 Difference]: Without dead ends: 54 [2024-11-03 14:17:17,652 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-03 14:17:17,653 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 14:17:17,653 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 350 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 14:17:17,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-03 14:17:17,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-03 14:17:17,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 40 states have internal predecessors, (51), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2024-11-03 14:17:17,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 73 transitions. [2024-11-03 14:17:17,667 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 73 transitions. Word has length 31 [2024-11-03 14:17:17,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:17:17,667 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 73 transitions. [2024-11-03 14:17:17,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-03 14:17:17,668 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 73 transitions. [2024-11-03 14:17:17,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-03 14:17:17,672 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:17:17,672 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:17:17,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0 [2024-11-03 14:17:17,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:17,873 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:17:17,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:17:17,874 INFO L85 PathProgramCache]: Analyzing trace with hash -403708035, now seen corresponding path program 1 times [2024-11-03 14:17:17,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:17:17,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892684071] [2024-11-03 14:17:17,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:17:17,875 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:17:17,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:17,877 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 14:17:17,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-03 14:17:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:17:17,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-03 14:17:17,929 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:17:18,188 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-03 14:17:18,189 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:17:18,432 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-03 14:17:18,433 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:17:18,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [892684071] [2024-11-03 14:17:18,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [892684071] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 14:17:18,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 14:17:18,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2024-11-03 14:17:18,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034768595] [2024-11-03 14:17:18,438 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 14:17:18,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-03 14:17:18,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:17:18,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-03 14:17:18,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-03 14:17:18,440 INFO L87 Difference]: Start difference. First operand 54 states and 73 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 11 states have internal predecessors, (36), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-03 14:17:18,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:17:18,983 INFO L93 Difference]: Finished difference Result 97 states and 132 transitions. [2024-11-03 14:17:18,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-03 14:17:18,984 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 11 states have internal predecessors, (36), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 36 [2024-11-03 14:17:18,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:17:18,985 INFO L225 Difference]: With dead ends: 97 [2024-11-03 14:17:18,985 INFO L226 Difference]: Without dead ends: 83 [2024-11-03 14:17:18,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2024-11-03 14:17:18,986 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 34 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-03 14:17:18,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 764 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-03 14:17:18,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-03 14:17:19,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 70. [2024-11-03 14:17:19,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 50 states have (on average 1.3) internal successors, (65), 50 states have internal predecessors, (65), 15 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (19), 17 states have call predecessors, (19), 15 states have call successors, (19) [2024-11-03 14:17:19,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 99 transitions. [2024-11-03 14:17:19,005 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 99 transitions. Word has length 36 [2024-11-03 14:17:19,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:17:19,005 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 99 transitions. [2024-11-03 14:17:19,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 11 states have internal predecessors, (36), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-03 14:17:19,005 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 99 transitions. [2024-11-03 14:17:19,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-03 14:17:19,010 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:17:19,010 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:17:19,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0 [2024-11-03 14:17:19,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:19,211 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:17:19,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:17:19,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1637683364, now seen corresponding path program 1 times [2024-11-03 14:17:19,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:17:19,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78033312] [2024-11-03 14:17:19,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:17:19,212 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:17:19,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:19,214 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 14:17:19,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-03 14:17:19,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:17:19,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-03 14:17:19,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:17:19,409 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-03 14:17:19,409 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:17:19,655 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-03 14:17:19,655 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:17:19,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78033312] [2024-11-03 14:17:19,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [78033312] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 14:17:19,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 14:17:19,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 14 [2024-11-03 14:17:19,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805393980] [2024-11-03 14:17:19,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 14:17:19,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 14:17:19,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:17:19,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 14:17:19,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-03 14:17:19,660 INFO L87 Difference]: Start difference. First operand 70 states and 99 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-03 14:17:19,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:17:19,877 INFO L93 Difference]: Finished difference Result 119 states and 164 transitions. [2024-11-03 14:17:19,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-03 14:17:19,881 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2024-11-03 14:17:19,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:17:19,882 INFO L225 Difference]: With dead ends: 119 [2024-11-03 14:17:19,882 INFO L226 Difference]: Without dead ends: 81 [2024-11-03 14:17:19,882 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-11-03 14:17:19,883 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 21 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 14:17:19,883 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 476 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 14:17:19,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-03 14:17:19,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 70. [2024-11-03 14:17:19,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 50 states have (on average 1.28) internal successors, (64), 50 states have internal predecessors, (64), 15 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (19), 17 states have call predecessors, (19), 15 states have call successors, (19) [2024-11-03 14:17:19,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 98 transitions. [2024-11-03 14:17:19,902 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 98 transitions. Word has length 38 [2024-11-03 14:17:19,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:17:19,902 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 98 transitions. [2024-11-03 14:17:19,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-03 14:17:19,902 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 98 transitions. [2024-11-03 14:17:19,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-03 14:17:19,903 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:17:19,903 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:17:19,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Forceful destruction successful, exit code 0 [2024-11-03 14:17:20,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:20,104 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:17:20,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:17:20,105 INFO L85 PathProgramCache]: Analyzing trace with hash -987503231, now seen corresponding path program 1 times [2024-11-03 14:17:20,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:17:20,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772581090] [2024-11-03 14:17:20,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:17:20,105 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:17:20,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:20,107 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 14:17:20,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-03 14:17:20,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:17:20,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-03 14:17:20,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:17:20,325 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-03 14:17:20,325 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:17:20,817 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-03 14:17:20,817 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:17:20,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772581090] [2024-11-03 14:17:20,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1772581090] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 14:17:20,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 14:17:20,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-03 14:17:20,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559924261] [2024-11-03 14:17:20,817 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 14:17:20,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-03 14:17:20,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:17:20,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-03 14:17:20,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-03 14:17:20,819 INFO L87 Difference]: Start difference. First operand 70 states and 98 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 14 states have internal predecessors, (39), 5 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-03 14:17:21,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:17:21,197 INFO L93 Difference]: Finished difference Result 108 states and 152 transitions. [2024-11-03 14:17:21,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-03 14:17:21,197 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 14 states have internal predecessors, (39), 5 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) Word has length 41 [2024-11-03 14:17:21,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:17:21,199 INFO L225 Difference]: With dead ends: 108 [2024-11-03 14:17:21,199 INFO L226 Difference]: Without dead ends: 106 [2024-11-03 14:17:21,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2024-11-03 14:17:21,200 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 62 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 14:17:21,200 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 339 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 14:17:21,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-03 14:17:21,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 80. [2024-11-03 14:17:21,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 57 states have (on average 1.263157894736842) internal successors, (72), 57 states have internal predecessors, (72), 18 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (23), 20 states have call predecessors, (23), 18 states have call successors, (23) [2024-11-03 14:17:21,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 113 transitions. [2024-11-03 14:17:21,213 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 113 transitions. Word has length 41 [2024-11-03 14:17:21,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:17:21,215 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 113 transitions. [2024-11-03 14:17:21,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 14 states have internal predecessors, (39), 5 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-03 14:17:21,216 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 113 transitions. [2024-11-03 14:17:21,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-03 14:17:21,217 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:17:21,217 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:17:21,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Forceful destruction successful, exit code 0 [2024-11-03 14:17:21,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:21,418 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:17:21,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:17:21,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1947898161, now seen corresponding path program 1 times [2024-11-03 14:17:21,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:17:21,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558277701] [2024-11-03 14:17:21,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:17:21,419 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:17:21,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:21,420 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 14:17:21,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Waiting until timeout for monitored process [2024-11-03 14:17:21,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:17:21,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-03 14:17:21,465 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:17:21,640 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-03 14:17:21,640 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:17:21,854 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-03 14:17:21,854 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:17:21,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558277701] [2024-11-03 14:17:21,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1558277701] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 14:17:21,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 14:17:21,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2024-11-03 14:17:21,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014967311] [2024-11-03 14:17:21,855 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 14:17:21,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-03 14:17:21,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:17:21,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-03 14:17:21,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-03 14:17:21,856 INFO L87 Difference]: Start difference. First operand 80 states and 113 transitions. Second operand has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 11 states have internal predecessors, (38), 3 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-03 14:17:22,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:17:22,287 INFO L93 Difference]: Finished difference Result 105 states and 144 transitions. [2024-11-03 14:17:22,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-03 14:17:22,287 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 11 states have internal predecessors, (38), 3 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 43 [2024-11-03 14:17:22,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:17:22,289 INFO L225 Difference]: With dead ends: 105 [2024-11-03 14:17:22,289 INFO L226 Difference]: Without dead ends: 89 [2024-11-03 14:17:22,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-11-03 14:17:22,290 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 34 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 14:17:22,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 561 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-03 14:17:22,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-03 14:17:22,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 80. [2024-11-03 14:17:22,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 57 states have (on average 1.2456140350877194) internal successors, (71), 57 states have internal predecessors, (71), 18 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (23), 20 states have call predecessors, (23), 18 states have call successors, (23) [2024-11-03 14:17:22,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 112 transitions. [2024-11-03 14:17:22,298 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 112 transitions. Word has length 43 [2024-11-03 14:17:22,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:17:22,298 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 112 transitions. [2024-11-03 14:17:22,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 11 states have internal predecessors, (38), 3 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-03 14:17:22,299 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 112 transitions. [2024-11-03 14:17:22,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-03 14:17:22,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:17:22,300 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:17:22,303 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Ended with exit code 0 [2024-11-03 14:17:22,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:22,502 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:17:22,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:17:22,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1178252102, now seen corresponding path program 1 times [2024-11-03 14:17:22,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:17:22,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492507706] [2024-11-03 14:17:22,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:17:22,503 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:17:22,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:22,505 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 14:17:22,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Waiting until timeout for monitored process [2024-11-03 14:17:22,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:17:22,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 14:17:22,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:17:22,567 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-03 14:17:22,567 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:17:22,607 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-03 14:17:22,607 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:17:22,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492507706] [2024-11-03 14:17:22,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1492507706] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 14:17:22,607 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 14:17:22,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-03 14:17:22,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616793030] [2024-11-03 14:17:22,608 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 14:17:22,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 14:17:22,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:17:22,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 14:17:22,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-03 14:17:22,609 INFO L87 Difference]: Start difference. First operand 80 states and 112 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-03 14:17:22,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:17:22,659 INFO L93 Difference]: Finished difference Result 111 states and 155 transitions. [2024-11-03 14:17:22,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 14:17:22,659 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 46 [2024-11-03 14:17:22,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:17:22,660 INFO L225 Difference]: With dead ends: 111 [2024-11-03 14:17:22,660 INFO L226 Difference]: Without dead ends: 86 [2024-11-03 14:17:22,661 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 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 14:17:22,661 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 14:17:22,662 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 251 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 14:17:22,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-03 14:17:22,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 82. [2024-11-03 14:17:22,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 59 states have (on average 1.2372881355932204) internal successors, (73), 57 states have internal predecessors, (73), 18 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (23), 22 states have call predecessors, (23), 18 states have call successors, (23) [2024-11-03 14:17:22,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 114 transitions. [2024-11-03 14:17:22,669 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 114 transitions. Word has length 46 [2024-11-03 14:17:22,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:17:22,669 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 114 transitions. [2024-11-03 14:17:22,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-03 14:17:22,669 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 114 transitions. [2024-11-03 14:17:22,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-03 14:17:22,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:17:22,670 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:17:22,672 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Ended with exit code 0 [2024-11-03 14:17:22,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:22,872 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:17:22,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:17:22,872 INFO L85 PathProgramCache]: Analyzing trace with hash -101611576, now seen corresponding path program 1 times [2024-11-03 14:17:22,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:17:22,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771004014] [2024-11-03 14:17:22,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:17:22,873 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:17:22,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:22,874 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 14:17:22,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Waiting until timeout for monitored process [2024-11-03 14:17:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:17:22,929 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-03 14:17:22,932 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:17:23,332 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-03 14:17:23,332 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:17:25,706 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-03 14:17:25,707 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:17:25,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771004014] [2024-11-03 14:17:25,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1771004014] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 14:17:25,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 14:17:25,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2024-11-03 14:17:25,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793697641] [2024-11-03 14:17:25,707 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 14:17:25,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-03 14:17:25,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:17:25,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-03 14:17:25,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2024-11-03 14:17:25,709 INFO L87 Difference]: Start difference. First operand 82 states and 114 transitions. Second operand has 24 states, 22 states have (on average 2.0) internal successors, (44), 20 states have internal predecessors, (44), 7 states have call successors, (11), 1 states have call predecessors, (11), 4 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2024-11-03 14:17:28,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:17:28,737 INFO L93 Difference]: Finished difference Result 123 states and 172 transitions. [2024-11-03 14:17:28,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-03 14:17:28,737 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.0) internal successors, (44), 20 states have internal predecessors, (44), 7 states have call successors, (11), 1 states have call predecessors, (11), 4 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) Word has length 46 [2024-11-03 14:17:28,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:17:28,739 INFO L225 Difference]: With dead ends: 123 [2024-11-03 14:17:28,739 INFO L226 Difference]: Without dead ends: 121 [2024-11-03 14:17:28,739 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 63 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=133, Invalid=737, Unknown=0, NotChecked=0, Total=870 [2024-11-03 14:17:28,740 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 220 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-03 14:17:28,740 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 831 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-03 14:17:28,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-03 14:17:28,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 86. [2024-11-03 14:17:28,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 62 states have (on average 1.2419354838709677) internal successors, (77), 58 states have internal predecessors, (77), 19 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (25), 25 states have call predecessors, (25), 19 states have call successors, (25) [2024-11-03 14:17:28,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 121 transitions. [2024-11-03 14:17:28,756 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 121 transitions. Word has length 46 [2024-11-03 14:17:28,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:17:28,757 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 121 transitions. [2024-11-03 14:17:28,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 2.0) internal successors, (44), 20 states have internal predecessors, (44), 7 states have call successors, (11), 1 states have call predecessors, (11), 4 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2024-11-03 14:17:28,757 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 121 transitions. [2024-11-03 14:17:28,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-03 14:17:28,758 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:17:28,758 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:17:28,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Ended with exit code 0 [2024-11-03 14:17:28,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:28,961 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:17:28,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:17:28,961 INFO L85 PathProgramCache]: Analyzing trace with hash -458335062, now seen corresponding path program 1 times [2024-11-03 14:17:28,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:17:28,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101830462] [2024-11-03 14:17:28,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:17:28,962 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:17:28,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:28,963 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 14:17:28,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Waiting until timeout for monitored process [2024-11-03 14:17:29,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:17:29,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-03 14:17:29,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:17:29,229 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-03 14:17:29,230 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:17:29,508 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-03 14:17:29,508 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:17:29,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101830462] [2024-11-03 14:17:29,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [101830462] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 14:17:29,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 14:17:29,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2024-11-03 14:17:29,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747383783] [2024-11-03 14:17:29,509 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 14:17:29,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-03 14:17:29,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:17:29,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-03 14:17:29,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-03 14:17:29,510 INFO L87 Difference]: Start difference. First operand 86 states and 121 transitions. Second operand has 15 states, 14 states have (on average 2.857142857142857) internal successors, (40), 11 states have internal predecessors, (40), 3 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-03 14:17:29,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:17:29,957 INFO L93 Difference]: Finished difference Result 103 states and 139 transitions. [2024-11-03 14:17:29,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-03 14:17:29,957 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.857142857142857) internal successors, (40), 11 states have internal predecessors, (40), 3 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 48 [2024-11-03 14:17:29,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:17:29,958 INFO L225 Difference]: With dead ends: 103 [2024-11-03 14:17:29,958 INFO L226 Difference]: Without dead ends: 81 [2024-11-03 14:17:29,959 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 79 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2024-11-03 14:17:29,959 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 27 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 14:17:29,959 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 556 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-03 14:17:29,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-03 14:17:29,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 78. [2024-11-03 14:17:29,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 56 states have (on average 1.1964285714285714) internal successors, (67), 54 states have internal predecessors, (67), 17 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (22), 21 states have call predecessors, (22), 17 states have call successors, (22) [2024-11-03 14:17:29,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 106 transitions. [2024-11-03 14:17:29,968 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 106 transitions. Word has length 48 [2024-11-03 14:17:29,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:17:29,969 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 106 transitions. [2024-11-03 14:17:29,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.857142857142857) internal successors, (40), 11 states have internal predecessors, (40), 3 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-03 14:17:29,969 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 106 transitions. [2024-11-03 14:17:29,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-03 14:17:29,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:17:29,980 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:17:29,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Ended with exit code 0 [2024-11-03 14:17:30,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:30,180 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:17:30,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:17:30,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1205492313, now seen corresponding path program 1 times [2024-11-03 14:17:30,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:17:30,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866312529] [2024-11-03 14:17:30,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:17:30,181 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:17:30,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:30,182 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 14:17:30,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Waiting until timeout for monitored process [2024-11-03 14:17:30,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:17:30,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-03 14:17:30,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:17:30,382 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-03 14:17:30,382 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:17:30,594 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-03 14:17:30,595 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:17:30,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866312529] [2024-11-03 14:17:30,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1866312529] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 14:17:30,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 14:17:30,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2024-11-03 14:17:30,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635515591] [2024-11-03 14:17:30,595 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 14:17:30,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-03 14:17:30,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:17:30,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-03 14:17:30,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-11-03 14:17:30,597 INFO L87 Difference]: Start difference. First operand 78 states and 106 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 12 states have internal predecessors, (50), 3 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (11), 6 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-03 14:17:30,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:17:30,944 INFO L93 Difference]: Finished difference Result 104 states and 134 transitions. [2024-11-03 14:17:30,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-03 14:17:30,944 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 12 states have internal predecessors, (50), 3 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (11), 6 states have call predecessors, (11), 3 states have call successors, (11) Word has length 48 [2024-11-03 14:17:30,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:17:30,945 INFO L225 Difference]: With dead ends: 104 [2024-11-03 14:17:30,945 INFO L226 Difference]: Without dead ends: 66 [2024-11-03 14:17:30,946 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-11-03 14:17:30,946 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 32 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 14:17:30,947 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 465 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 14:17:30,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-03 14:17:30,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2024-11-03 14:17:30,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 47 states have (on average 1.148936170212766) internal successors, (54), 47 states have internal predecessors, (54), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (16), 15 states have call predecessors, (16), 13 states have call successors, (16) [2024-11-03 14:17:30,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 83 transitions. [2024-11-03 14:17:30,954 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 83 transitions. Word has length 48 [2024-11-03 14:17:30,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:17:30,955 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 83 transitions. [2024-11-03 14:17:30,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 12 states have internal predecessors, (50), 3 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (11), 6 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-03 14:17:30,955 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 83 transitions. [2024-11-03 14:17:30,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-03 14:17:30,955 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:17:30,956 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:17:30,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Forceful destruction successful, exit code 0 [2024-11-03 14:17:31,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:31,156 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:17:31,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:17:31,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1837005036, now seen corresponding path program 1 times [2024-11-03 14:17:31,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:17:31,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927755587] [2024-11-03 14:17:31,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:17:31,157 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:17:31,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:31,158 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 14:17:31,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Waiting until timeout for monitored process [2024-11-03 14:17:31,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:17:31,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-03 14:17:31,216 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:17:31,367 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-03 14:17:31,367 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:17:31,792 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-03 14:17:31,792 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:17:31,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927755587] [2024-11-03 14:17:31,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1927755587] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 14:17:31,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 14:17:31,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2024-11-03 14:17:31,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995941895] [2024-11-03 14:17:31,793 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 14:17:31,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-03 14:17:31,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:17:31,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-03 14:17:31,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-11-03 14:17:31,794 INFO L87 Difference]: Start difference. First operand 65 states and 83 transitions. Second operand has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 6 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-03 14:17:32,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:17:32,159 INFO L93 Difference]: Finished difference Result 94 states and 117 transitions. [2024-11-03 14:17:32,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-03 14:17:32,159 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 6 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) Word has length 49 [2024-11-03 14:17:32,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:17:32,160 INFO L225 Difference]: With dead ends: 94 [2024-11-03 14:17:32,160 INFO L226 Difference]: Without dead ends: 68 [2024-11-03 14:17:32,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2024-11-03 14:17:32,161 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 49 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 14:17:32,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 403 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 14:17:32,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-03 14:17:32,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2024-11-03 14:17:32,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 49 states have internal predecessors, (55), 13 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (18), 15 states have call predecessors, (18), 13 states have call successors, (18) [2024-11-03 14:17:32,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 86 transitions. [2024-11-03 14:17:32,173 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 86 transitions. Word has length 49 [2024-11-03 14:17:32,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:17:32,174 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 86 transitions. [2024-11-03 14:17:32,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 6 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-03 14:17:32,174 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 86 transitions. [2024-11-03 14:17:32,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-03 14:17:32,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:17:32,175 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:17:32,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Ended with exit code 0 [2024-11-03 14:17:32,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:32,375 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:17:32,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:17:32,376 INFO L85 PathProgramCache]: Analyzing trace with hash -412424737, now seen corresponding path program 1 times [2024-11-03 14:17:32,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:17:32,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45786879] [2024-11-03 14:17:32,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:17:32,376 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:17:32,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:32,377 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 14:17:32,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Waiting until timeout for monitored process [2024-11-03 14:17:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:17:32,429 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-03 14:17:32,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:17:32,605 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-03 14:17:32,605 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:17:33,546 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-03 14:17:33,546 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:17:33,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45786879] [2024-11-03 14:17:33,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [45786879] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 14:17:33,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 14:17:33,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2024-11-03 14:17:33,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675432633] [2024-11-03 14:17:33,547 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 14:17:33,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-03 14:17:33,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:17:33,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-03 14:17:33,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-11-03 14:17:33,549 INFO L87 Difference]: Start difference. First operand 67 states and 86 transitions. Second operand has 17 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 6 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-03 14:17:34,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:17:34,194 INFO L93 Difference]: Finished difference Result 98 states and 121 transitions. [2024-11-03 14:17:34,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-03 14:17:34,195 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 6 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) Word has length 50 [2024-11-03 14:17:34,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:17:34,196 INFO L225 Difference]: With dead ends: 98 [2024-11-03 14:17:34,196 INFO L226 Difference]: Without dead ends: 70 [2024-11-03 14:17:34,196 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 82 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2024-11-03 14:17:34,197 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 34 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-03 14:17:34,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 477 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-03 14:17:34,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-03 14:17:34,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 67. [2024-11-03 14:17:34,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 49 states have internal predecessors, (55), 13 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (18), 15 states have call predecessors, (18), 13 states have call successors, (18) [2024-11-03 14:17:34,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 86 transitions. [2024-11-03 14:17:34,202 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 86 transitions. Word has length 50 [2024-11-03 14:17:34,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:17:34,202 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 86 transitions. [2024-11-03 14:17:34,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 6 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-03 14:17:34,202 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 86 transitions. [2024-11-03 14:17:34,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-03 14:17:34,203 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:17:34,204 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:17:34,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Ended with exit code 0 [2024-11-03 14:17:34,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:34,405 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:17:34,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:17:34,406 INFO L85 PathProgramCache]: Analyzing trace with hash -722668936, now seen corresponding path program 1 times [2024-11-03 14:17:34,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:17:34,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770099612] [2024-11-03 14:17:34,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:17:34,406 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:17:34,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:34,407 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 14:17:34,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (15)] Waiting until timeout for monitored process [2024-11-03 14:17:34,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:17:34,467 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-03 14:17:34,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:17:34,658 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-03 14:17:34,658 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:17:35,384 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-03 14:17:35,384 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:17:35,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770099612] [2024-11-03 14:17:35,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [770099612] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 14:17:35,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 14:17:35,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2024-11-03 14:17:35,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906842221] [2024-11-03 14:17:35,385 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 14:17:35,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-03 14:17:35,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:17:35,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-03 14:17:35,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-11-03 14:17:35,386 INFO L87 Difference]: Start difference. First operand 67 states and 86 transitions. Second operand has 17 states, 15 states have (on average 3.933333333333333) internal successors, (59), 15 states have internal predecessors, (59), 6 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-03 14:17:35,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:17:35,937 INFO L93 Difference]: Finished difference Result 98 states and 121 transitions. [2024-11-03 14:17:35,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-03 14:17:35,938 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.933333333333333) internal successors, (59), 15 states have internal predecessors, (59), 6 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) Word has length 51 [2024-11-03 14:17:35,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:17:35,938 INFO L225 Difference]: With dead ends: 98 [2024-11-03 14:17:35,938 INFO L226 Difference]: Without dead ends: 70 [2024-11-03 14:17:35,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 84 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2024-11-03 14:17:35,939 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 34 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-03 14:17:35,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 419 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-03 14:17:35,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-03 14:17:35,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 67. [2024-11-03 14:17:35,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 49 states have internal predecessors, (55), 13 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (18), 15 states have call predecessors, (18), 13 states have call successors, (18) [2024-11-03 14:17:35,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 86 transitions. [2024-11-03 14:17:35,944 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 86 transitions. Word has length 51 [2024-11-03 14:17:35,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:17:35,944 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 86 transitions. [2024-11-03 14:17:35,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.933333333333333) internal successors, (59), 15 states have internal predecessors, (59), 6 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-03 14:17:35,945 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 86 transitions. [2024-11-03 14:17:35,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-03 14:17:35,945 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:17:35,945 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:17:35,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (15)] Ended with exit code 0 [2024-11-03 14:17:36,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:36,146 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:17:36,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:17:36,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1022102275, now seen corresponding path program 1 times [2024-11-03 14:17:36,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:17:36,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768169861] [2024-11-03 14:17:36,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:17:36,146 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:17:36,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:36,147 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 14:17:36,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (16)] Waiting until timeout for monitored process [2024-11-03 14:17:36,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:17:36,201 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-03 14:17:36,204 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:17:36,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-03 14:17:37,545 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v___fpclassify_float_~#gf_u~0.base_95| (_ BitVec 32))) (let ((.cse0 (select (select |c_#memory_int#1| |v___fpclassify_float_~#gf_u~0.base_95|) (_ bv0 32)))) (and (= |c_#memory_int#1| (store |c_old(#memory_int#1)| |v___fpclassify_float_~#gf_u~0.base_95| (store (select |c_old(#memory_int#1)| |v___fpclassify_float_~#gf_u~0.base_95|) (_ bv0 32) .cse0))) (= (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0)) |c___fpclassify_float_#in~x|) (= c___fpclassify_float_~w~0 .cse0)))) is different from true [2024-11-03 14:17:37,972 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-03 14:17:37,972 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:17:39,391 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-03 14:17:39,391 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:17:39,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768169861] [2024-11-03 14:17:39,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [768169861] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 14:17:39,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 14:17:39,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [13] total 24 [2024-11-03 14:17:39,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692207967] [2024-11-03 14:17:39,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 14:17:39,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-03 14:17:39,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:17:39,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-03 14:17:39,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=428, Unknown=2, NotChecked=42, Total=552 [2024-11-03 14:17:39,394 INFO L87 Difference]: Start difference. First operand 67 states and 86 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 12 states have internal predecessors, (38), 3 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-03 14:17:39,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:17:39,801 INFO L93 Difference]: Finished difference Result 70 states and 88 transitions. [2024-11-03 14:17:39,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-03 14:17:39,802 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 12 states have internal predecessors, (38), 3 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 52 [2024-11-03 14:17:39,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:17:39,802 INFO L225 Difference]: With dead ends: 70 [2024-11-03 14:17:39,802 INFO L226 Difference]: Without dead ends: 49 [2024-11-03 14:17:39,803 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=85, Invalid=469, Unknown=2, NotChecked=44, Total=600 [2024-11-03 14:17:39,803 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 2 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 101 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 14:17:39,804 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 317 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 272 Invalid, 2 Unknown, 101 Unchecked, 0.4s Time] [2024-11-03 14:17:39,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-03 14:17:39,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2024-11-03 14:17:39,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 34 states have internal predecessors, (41), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-03 14:17:39,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 59 transitions. [2024-11-03 14:17:39,808 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 59 transitions. Word has length 52 [2024-11-03 14:17:39,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:17:39,808 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 59 transitions. [2024-11-03 14:17:39,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 12 states have internal predecessors, (38), 3 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-03 14:17:39,808 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 59 transitions. [2024-11-03 14:17:39,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-03 14:17:39,809 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:17:39,809 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:17:39,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (16)] Forceful destruction successful, exit code 0 [2024-11-03 14:17:40,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:40,009 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:17:40,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:17:40,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1377347757, now seen corresponding path program 1 times [2024-11-03 14:17:40,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:17:40,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024951251] [2024-11-03 14:17:40,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:17:40,010 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:17:40,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:40,011 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 14:17:40,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (17)] Waiting until timeout for monitored process [2024-11-03 14:17:40,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:17:40,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-03 14:17:40,063 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:17:40,398 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-03 14:17:40,399 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:17:41,171 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-03 14:17:41,172 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:17:41,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024951251] [2024-11-03 14:17:41,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2024951251] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 14:17:41,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 14:17:41,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2024-11-03 14:17:41,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605255061] [2024-11-03 14:17:41,172 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 14:17:41,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-03 14:17:41,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:17:41,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-03 14:17:41,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2024-11-03 14:17:41,173 INFO L87 Difference]: Start difference. First operand 47 states and 59 transitions. Second operand has 22 states, 21 states have (on average 2.238095238095238) internal successors, (47), 20 states have internal predecessors, (47), 4 states have call successors, (10), 2 states have call predecessors, (10), 6 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-03 14:17:41,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:17:41,758 INFO L93 Difference]: Finished difference Result 78 states and 96 transitions. [2024-11-03 14:17:41,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-03 14:17:41,758 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.238095238095238) internal successors, (47), 20 states have internal predecessors, (47), 4 states have call successors, (10), 2 states have call predecessors, (10), 6 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 55 [2024-11-03 14:17:41,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:17:41,759 INFO L225 Difference]: With dead ends: 78 [2024-11-03 14:17:41,759 INFO L226 Difference]: Without dead ends: 47 [2024-11-03 14:17:41,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=145, Invalid=667, Unknown=0, NotChecked=0, Total=812 [2024-11-03 14:17:41,760 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 34 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 14:17:41,760 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 331 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 14:17:41,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-03 14:17:41,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2024-11-03 14:17:41,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 states have internal predecessors, (39), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-03 14:17:41,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2024-11-03 14:17:41,765 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 55 [2024-11-03 14:17:41,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:17:41,765 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2024-11-03 14:17:41,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.238095238095238) internal successors, (47), 20 states have internal predecessors, (47), 4 states have call successors, (10), 2 states have call predecessors, (10), 6 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-03 14:17:41,765 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2024-11-03 14:17:41,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-03 14:17:41,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:17:41,766 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:17:41,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (17)] Ended with exit code 0 [2024-11-03 14:17:41,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:41,967 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:17:41,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:17:41,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1696305608, now seen corresponding path program 1 times [2024-11-03 14:17:41,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:17:41,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493514699] [2024-11-03 14:17:41,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:17:41,967 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:17:41,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:41,969 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 14:17:41,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (18)] Waiting until timeout for monitored process [2024-11-03 14:17:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:17:42,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-03 14:17:42,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:17:42,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-03 14:17:42,146 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v___fpclassify_float_~#gf_u~0.base_121| (_ BitVec 32))) (let ((.cse0 (select (select |c_#memory_int#1| |v___fpclassify_float_~#gf_u~0.base_121|) (_ bv0 32)))) (and (= |c_#memory_int#1| (store |c_old(#memory_int#1)| |v___fpclassify_float_~#gf_u~0.base_121| (store (select |c_old(#memory_int#1)| |v___fpclassify_float_~#gf_u~0.base_121|) (_ bv0 32) .cse0))) (= (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0)) |c___fpclassify_float_#in~x|) (= .cse0 c___fpclassify_float_~w~0)))) is different from true [2024-11-03 14:17:42,202 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-03 14:17:42,202 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:17:42,626 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-03 14:17:42,626 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:17:42,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493514699] [2024-11-03 14:17:42,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1493514699] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 14:17:42,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 14:17:42,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2024-11-03 14:17:42,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111095872] [2024-11-03 14:17:42,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 14:17:42,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-03 14:17:42,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:17:42,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-03 14:17:42,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=261, Unknown=2, NotChecked=32, Total=342 [2024-11-03 14:17:42,628 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 9 states have internal predecessors, (38), 3 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-03 14:17:42,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:17:42,837 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2024-11-03 14:17:42,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-03 14:17:42,838 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 9 states have internal predecessors, (38), 3 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 60 [2024-11-03 14:17:42,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:17:42,838 INFO L225 Difference]: With dead ends: 66 [2024-11-03 14:17:42,838 INFO L226 Difference]: Without dead ends: 49 [2024-11-03 14:17:42,839 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=292, Unknown=2, NotChecked=34, Total=380 [2024-11-03 14:17:42,839 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 3 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 79 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 14:17:42,839 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 258 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 140 Invalid, 0 Unknown, 79 Unchecked, 0.2s Time] [2024-11-03 14:17:42,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-03 14:17:42,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2024-11-03 14:17:42,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 36 states have internal predecessors, (40), 8 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-03 14:17:42,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2024-11-03 14:17:42,843 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 60 [2024-11-03 14:17:42,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:17:42,844 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2024-11-03 14:17:42,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 9 states have internal predecessors, (38), 3 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-03 14:17:42,844 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2024-11-03 14:17:42,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-03 14:17:42,844 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:17:42,845 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:17:42,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (18)] Forceful destruction successful, exit code 0 [2024-11-03 14:17:43,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:43,045 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:17:43,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:17:43,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1055709639, now seen corresponding path program 1 times [2024-11-03 14:17:43,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:17:43,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472976596] [2024-11-03 14:17:43,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:17:43,046 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:17:43,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:43,048 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 14:17:43,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (19)] Waiting until timeout for monitored process [2024-11-03 14:17:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:17:43,117 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-03 14:17:43,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:17:43,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-03 14:17:43,269 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v___fpclassify_float_~#gf_u~0.base_138| (_ BitVec 32))) (let ((.cse0 (select (select |c_#memory_int#1| |v___fpclassify_float_~#gf_u~0.base_138|) (_ bv0 32)))) (and (= (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0)) |c___fpclassify_float_#in~x|) (= c___fpclassify_float_~w~0 .cse0) (= |c_#memory_int#1| (store |c_old(#memory_int#1)| |v___fpclassify_float_~#gf_u~0.base_138| (store (select |c_old(#memory_int#1)| |v___fpclassify_float_~#gf_u~0.base_138|) (_ bv0 32) .cse0)))))) is different from true [2024-11-03 14:17:43,382 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-03 14:17:43,382 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:17:44,038 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-03 14:17:44,038 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:17:44,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472976596] [2024-11-03 14:17:44,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1472976596] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 14:17:44,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 14:17:44,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2024-11-03 14:17:44,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794313019] [2024-11-03 14:17:44,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 14:17:44,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-03 14:17:44,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:17:44,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-03 14:17:44,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=262, Unknown=1, NotChecked=32, Total=342 [2024-11-03 14:17:44,040 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 9 states have internal predecessors, (39), 3 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-03 14:17:44,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:17:44,307 INFO L93 Difference]: Finished difference Result 68 states and 80 transitions. [2024-11-03 14:17:44,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-03 14:17:44,307 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 9 states have internal predecessors, (39), 3 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 61 [2024-11-03 14:17:44,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:17:44,308 INFO L225 Difference]: With dead ends: 68 [2024-11-03 14:17:44,308 INFO L226 Difference]: Without dead ends: 51 [2024-11-03 14:17:44,308 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=293, Unknown=1, NotChecked=34, Total=380 [2024-11-03 14:17:44,309 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 3 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 96 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 14:17:44,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 284 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 152 Invalid, 0 Unknown, 96 Unchecked, 0.2s Time] [2024-11-03 14:17:44,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-03 14:17:44,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2024-11-03 14:17:44,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 36 states have internal predecessors, (40), 8 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-03 14:17:44,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2024-11-03 14:17:44,313 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 61 [2024-11-03 14:17:44,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:17:44,313 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2024-11-03 14:17:44,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 9 states have internal predecessors, (39), 3 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-03 14:17:44,314 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2024-11-03 14:17:44,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-03 14:17:44,314 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:17:44,314 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:17:44,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (19)] Forceful destruction successful, exit code 0 [2024-11-03 14:17:44,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:44,515 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:17:44,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:17:44,515 INFO L85 PathProgramCache]: Analyzing trace with hash -187739156, now seen corresponding path program 1 times [2024-11-03 14:17:44,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:17:44,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972108077] [2024-11-03 14:17:44,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:17:44,516 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:17:44,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:44,517 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 14:17:44,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (20)] Waiting until timeout for monitored process [2024-11-03 14:17:44,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:17:44,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-03 14:17:44,578 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:17:44,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-03 14:17:44,704 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v___fpclassify_float_~#gf_u~0.base_155| (_ BitVec 32))) (let ((.cse0 (select (select |c_#memory_int#1| |v___fpclassify_float_~#gf_u~0.base_155|) (_ bv0 32)))) (and (= |c_#memory_int#1| (store |c_old(#memory_int#1)| |v___fpclassify_float_~#gf_u~0.base_155| (store (select |c_old(#memory_int#1)| |v___fpclassify_float_~#gf_u~0.base_155|) (_ bv0 32) .cse0))) (= |c___fpclassify_float_#in~x| (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0))) (= .cse0 c___fpclassify_float_~w~0)))) is different from true [2024-11-03 14:17:44,818 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-03 14:17:44,818 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:17:45,663 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-03 14:17:45,663 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:17:45,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972108077] [2024-11-03 14:17:45,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1972108077] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 14:17:45,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 14:17:45,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2024-11-03 14:17:45,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465882251] [2024-11-03 14:17:45,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 14:17:45,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-03 14:17:45,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:17:45,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-03 14:17:45,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=261, Unknown=2, NotChecked=32, Total=342 [2024-11-03 14:17:45,665 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 9 states have internal predecessors, (40), 3 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-03 14:17:45,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:17:45,901 INFO L93 Difference]: Finished difference Result 68 states and 80 transitions. [2024-11-03 14:17:45,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-03 14:17:45,902 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 9 states have internal predecessors, (40), 3 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 62 [2024-11-03 14:17:45,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:17:45,902 INFO L225 Difference]: With dead ends: 68 [2024-11-03 14:17:45,903 INFO L226 Difference]: Without dead ends: 51 [2024-11-03 14:17:45,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=292, Unknown=2, NotChecked=34, Total=380 [2024-11-03 14:17:45,903 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 3 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 113 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 14:17:45,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 240 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 140 Invalid, 0 Unknown, 113 Unchecked, 0.2s Time] [2024-11-03 14:17:45,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-03 14:17:45,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2024-11-03 14:17:45,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 36 states have internal predecessors, (40), 8 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-03 14:17:45,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2024-11-03 14:17:45,907 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 62 [2024-11-03 14:17:45,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:17:45,908 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2024-11-03 14:17:45,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 9 states have internal predecessors, (40), 3 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-03 14:17:45,908 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2024-11-03 14:17:45,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-03 14:17:45,908 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:17:45,908 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:17:45,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (20)] Ended with exit code 0 [2024-11-03 14:17:46,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:46,112 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:17:46,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:17:46,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1230639261, now seen corresponding path program 1 times [2024-11-03 14:17:46,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:17:46,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149938032] [2024-11-03 14:17:46,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:17:46,113 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:17:46,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:46,114 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 14:17:46,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (21)] Waiting until timeout for monitored process [2024-11-03 14:17:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:17:46,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-03 14:17:46,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:17:46,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-03 14:17:46,310 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v___fpclassify_float_~#gf_u~0.base_172| (_ BitVec 32))) (let ((.cse0 (select (select |c_#memory_int#1| |v___fpclassify_float_~#gf_u~0.base_172|) (_ bv0 32)))) (and (= |c_#memory_int#1| (store |c_old(#memory_int#1)| |v___fpclassify_float_~#gf_u~0.base_172| (store (select |c_old(#memory_int#1)| |v___fpclassify_float_~#gf_u~0.base_172|) (_ bv0 32) .cse0))) (= c___fpclassify_float_~w~0 .cse0) (= (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0)) |c___fpclassify_float_#in~x|)))) is different from true [2024-11-03 14:17:46,424 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-03 14:17:46,424 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:17:46,855 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-03 14:17:46,855 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:17:46,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149938032] [2024-11-03 14:17:46,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [149938032] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 14:17:46,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 14:17:46,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2024-11-03 14:17:46,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988641231] [2024-11-03 14:17:46,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 14:17:46,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-03 14:17:46,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:17:46,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-03 14:17:46,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=261, Unknown=2, NotChecked=32, Total=342 [2024-11-03 14:17:46,857 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-03 14:17:47,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:17:47,060 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2024-11-03 14:17:47,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-03 14:17:47,061 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 63 [2024-11-03 14:17:47,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:17:47,062 INFO L225 Difference]: With dead ends: 65 [2024-11-03 14:17:47,062 INFO L226 Difference]: Without dead ends: 48 [2024-11-03 14:17:47,062 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=292, Unknown=2, NotChecked=34, Total=380 [2024-11-03 14:17:47,063 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 3 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 130 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 14:17:47,063 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 217 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 139 Invalid, 0 Unknown, 130 Unchecked, 0.2s Time] [2024-11-03 14:17:47,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-03 14:17:47,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2024-11-03 14:17:47,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 34 states have internal predecessors, (38), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-03 14:17:47,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2024-11-03 14:17:47,067 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 63 [2024-11-03 14:17:47,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:17:47,067 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2024-11-03 14:17:47,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-03 14:17:47,067 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2024-11-03 14:17:47,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-03 14:17:47,068 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:17:47,068 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:17:47,072 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (21)] Ended with exit code 0 [2024-11-03 14:17:47,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:47,269 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:17:47,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:17:47,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1065424800, now seen corresponding path program 1 times [2024-11-03 14:17:47,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:17:47,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236126132] [2024-11-03 14:17:47,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:17:47,269 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:17:47,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:47,270 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 14:17:47,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (22)] Waiting until timeout for monitored process [2024-11-03 14:17:47,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:17:47,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-03 14:17:47,338 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:17:47,480 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-03 14:17:47,480 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:17:47,648 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-03 14:17:47,649 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:17:47,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236126132] [2024-11-03 14:17:47,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [236126132] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 14:17:47,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 14:17:47,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2024-11-03 14:17:47,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813650958] [2024-11-03 14:17:47,649 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 14:17:47,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-03 14:17:47,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:17:47,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-03 14:17:47,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2024-11-03 14:17:47,651 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand has 16 states, 16 states have (on average 3.25) internal successors, (52), 14 states have internal predecessors, (52), 6 states have call successors, (13), 1 states have call predecessors, (13), 3 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-03 14:17:47,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:17:47,873 INFO L93 Difference]: Finished difference Result 59 states and 70 transitions. [2024-11-03 14:17:47,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-03 14:17:47,874 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 14 states have internal predecessors, (52), 6 states have call successors, (13), 1 states have call predecessors, (13), 3 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) Word has length 63 [2024-11-03 14:17:47,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:17:47,875 INFO L225 Difference]: With dead ends: 59 [2024-11-03 14:17:47,875 INFO L226 Difference]: Without dead ends: 46 [2024-11-03 14:17:47,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 108 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2024-11-03 14:17:47,876 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 20 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 14:17:47,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 394 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 14:17:47,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-03 14:17:47,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2024-11-03 14:17:47,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 33 states have (on average 1.121212121212121) internal successors, (37), 34 states have internal predecessors, (37), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-03 14:17:47,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2024-11-03 14:17:47,879 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 63 [2024-11-03 14:17:47,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:17:47,880 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2024-11-03 14:17:47,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 14 states have internal predecessors, (52), 6 states have call successors, (13), 1 states have call predecessors, (13), 3 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-03 14:17:47,881 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2024-11-03 14:17:47,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-03 14:17:47,881 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 14:17:47,881 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:17:47,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (22)] Ended with exit code 0 [2024-11-03 14:17:48,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:48,082 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 14:17:48,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 14:17:48,082 INFO L85 PathProgramCache]: Analyzing trace with hash -846570082, now seen corresponding path program 1 times [2024-11-03 14:17:48,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 14:17:48,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116659979] [2024-11-03 14:17:48,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 14:17:48,083 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 14:17:48,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:48,084 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 14:17:48,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (23)] Waiting until timeout for monitored process [2024-11-03 14:17:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 14:17:48,142 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 14:17:48,143 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 14:17:48,152 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-03 14:17:48,152 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 14:17:48,178 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-03 14:17:48,178 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 14:17:48,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116659979] [2024-11-03 14:17:48,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [116659979] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 14:17:48,179 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 14:17:48,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2024-11-03 14:17:48,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060495218] [2024-11-03 14:17:48,179 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 14:17:48,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 14:17:48,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 14:17:48,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 14:17:48,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-03 14:17:48,180 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-03 14:17:48,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 14:17:48,188 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2024-11-03 14:17:48,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 14:17:48,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 63 [2024-11-03 14:17:48,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 14:17:48,191 INFO L225 Difference]: With dead ends: 48 [2024-11-03 14:17:48,191 INFO L226 Difference]: Without dead ends: 0 [2024-11-03 14:17:48,191 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-03 14:17:48,192 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 14:17:48,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 103 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 14:17:48,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-03 14:17:48,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-03 14:17:48,193 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 14:17:48,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-03 14:17:48,193 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2024-11-03 14:17:48,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 14:17:48,193 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-03 14:17:48,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-03 14:17:48,193 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-03 14:17:48,193 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-03 14:17:48,197 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-03 14:17:48,197 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-03 14:17:48,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (23)] Ended with exit code 0 [2024-11-03 14:17:48,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 14:17:48,401 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 14:17:48,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.