/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 'cvc5 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/neural-networks/softmax_13_unsafe.c-amalgamation.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 07:17:43,003 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 07:17:43,070 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 07:17:43,077 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 07:17:43,077 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 07:17:43,098 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 07:17:43,099 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 07:17:43,099 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 07:17:43,100 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 07:17:43,101 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 07:17:43,102 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 07:17:43,102 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 07:17:43,102 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 07:17:43,103 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 07:17:43,104 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 07:17:43,104 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 07:17:43,104 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 07:17:43,104 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 07:17:43,105 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 07:17:43,105 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 07:17:43,107 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 07:17:43,109 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 07:17:43,110 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 07:17:43,110 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 07:17:43,110 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 07:17:43,110 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 07:17:43,110 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 07:17:43,111 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 07:17:43,111 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 07:17:43,111 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 07:17:43,111 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 07:17:43,112 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 07:17:43,112 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 07:17:43,112 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 07:17:43,112 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 07:17:43,112 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 07:17:43,113 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 07:17:43,113 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 07:17:43,113 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 07:17:43,115 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 07:17:43,115 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 07:17:43,115 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 07:17:43,115 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 07:17:43,115 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 07:17:43,115 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc5 --incremental --print-success --lang smt [2024-11-03 07:17:43,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 07:17:43,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 07:17:43,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 07:17:43,371 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 07:17:43,372 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 07:17:43,373 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/neural-networks/softmax_13_unsafe.c-amalgamation.i [2024-11-03 07:17:44,735 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 07:17:44,972 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 07:17:44,973 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/neural-networks/softmax_13_unsafe.c-amalgamation.i [2024-11-03 07:17:44,998 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b97dd2a64/e316cfb8891543339bbb10c990b5097d/FLAG35dda98e0 [2024-11-03 07:17:45,287 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b97dd2a64/e316cfb8891543339bbb10c990b5097d [2024-11-03 07:17:45,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 07:17:45,290 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 07:17:45,294 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 07:17:45,294 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 07:17:45,300 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 07:17:45,301 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 07:17:45" (1/1) ... [2024-11-03 07:17:45,302 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40d8ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:17:45, skipping insertion in model container [2024-11-03 07:17:45,302 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 07:17:45" (1/1) ... [2024-11-03 07:17:45,347 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 07:17:45,834 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/neural-networks/softmax_13_unsafe.c-amalgamation.i[63385,63398] [2024-11-03 07:17:45,837 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 07:17:45,850 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 07:17:45,896 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/neural-networks/softmax_13_unsafe.c-amalgamation.i[63385,63398] [2024-11-03 07:17:45,897 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 07:17:46,061 INFO L204 MainTranslator]: Completed translation [2024-11-03 07:17:46,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:17:46 WrapperNode [2024-11-03 07:17:46,062 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 07:17:46,063 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 07:17:46,063 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 07:17:46,063 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 07:17:46,070 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:17:46" (1/1) ... [2024-11-03 07:17:46,096 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:17:46" (1/1) ... [2024-11-03 07:17:46,119 INFO L138 Inliner]: procedures = 562, calls = 35, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 99 [2024-11-03 07:17:46,119 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 07:17:46,123 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 07:17:46,123 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 07:17:46,123 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 07:17:46,133 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:17:46" (1/1) ... [2024-11-03 07:17:46,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:17:46" (1/1) ... [2024-11-03 07:17:46,140 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:17:46" (1/1) ... [2024-11-03 07:17:46,157 INFO L175 MemorySlicer]: Split 24 memory accesses to 4 slices as follows [2, 7, 10, 5]. 42 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7, 0, 0]. The 6 writes are split as follows [0, 0, 4, 2]. [2024-11-03 07:17:46,158 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:17:46" (1/1) ... [2024-11-03 07:17:46,158 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:17:46" (1/1) ... [2024-11-03 07:17:46,168 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:17:46" (1/1) ... [2024-11-03 07:17:46,173 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:17:46" (1/1) ... [2024-11-03 07:17:46,175 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:17:46" (1/1) ... [2024-11-03 07:17:46,176 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:17:46" (1/1) ... [2024-11-03 07:17:46,184 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 07:17:46,185 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 07:17:46,185 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 07:17:46,185 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 07:17:46,190 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:17:46" (1/1) ... [2024-11-03 07:17:46,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 07:17:46,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 07:17:46,219 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 07:17:46,225 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 07:17:46,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2024-11-03 07:17:46,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2024-11-03 07:17:46,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2024-11-03 07:17:46,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3 [2024-11-03 07:17:46,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-03 07:17:46,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 07:17:46,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-03 07:17:46,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-03 07:17:46,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-03 07:17:46,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 07:17:46,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 07:17:46,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 07:17:46,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2024-11-03 07:17:46,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2024-11-03 07:17:46,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#2 [2024-11-03 07:17:46,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#3 [2024-11-03 07:17:46,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-03 07:17:46,365 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 07:17:46,367 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 07:17:47,320 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-11-03 07:17:47,321 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 07:17:47,329 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 07:17:47,329 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-03 07:17:47,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 07:17:47 BoogieIcfgContainer [2024-11-03 07:17:47,330 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 07:17:47,332 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 07:17:47,332 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 07:17:47,335 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 07:17:47,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 07:17:45" (1/3) ... [2024-11-03 07:17:47,336 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24069a67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 07:17:47, skipping insertion in model container [2024-11-03 07:17:47,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:17:46" (2/3) ... [2024-11-03 07:17:47,336 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24069a67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 07:17:47, skipping insertion in model container [2024-11-03 07:17:47,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 07:17:47" (3/3) ... [2024-11-03 07:17:47,338 INFO L112 eAbstractionObserver]: Analyzing ICFG softmax_13_unsafe.c-amalgamation.i [2024-11-03 07:17:47,353 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 07:17:47,353 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 07:17:47,419 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 07:17:47,426 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;@3a959764, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 07:17:47,426 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 07:17:47,431 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 07:17:47,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-03 07:17:47,437 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:17:47,437 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 07:17:47,438 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:17:47,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:17:47,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1499734502, now seen corresponding path program 1 times [2024-11-03 07:17:47,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:17:47,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367323040] [2024-11-03 07:17:47,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:17:47,456 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:17:47,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:17:47,460 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 07:17:47,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-03 07:17:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:17:47,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 07:17:47,594 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:17:47,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 07:17:47,610 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:17:47,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 07:17:47,616 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:17:47,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367323040] [2024-11-03 07:17:47,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1367323040] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 07:17:47,616 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 07:17:47,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 07:17:47,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248620247] [2024-11-03 07:17:47,620 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 07:17:47,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 07:17:47,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:17:47,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 07:17:47,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 07:17:47,644 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 07:17:47,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:17:47,654 INFO L93 Difference]: Finished difference Result 39 states and 54 transitions. [2024-11-03 07:17:47,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 07:17:47,655 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-03 07:17:47,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:17:47,660 INFO L225 Difference]: With dead ends: 39 [2024-11-03 07:17:47,660 INFO L226 Difference]: Without dead ends: 17 [2024-11-03 07:17:47,662 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 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 07:17:47,665 INFO L432 NwaCegarLoop]: 24 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, 24 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 07:17:47,665 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 07:17:47,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-03 07:17:47,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-03 07:17:47,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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 07:17:47,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2024-11-03 07:17:47,694 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 12 [2024-11-03 07:17:47,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:17:47,694 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2024-11-03 07:17:47,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 07:17:47,695 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2024-11-03 07:17:47,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-03 07:17:47,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:17:47,697 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 07:17:47,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-11-03 07:17:47,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 07:17:47,898 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:17:47,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:17:47,899 INFO L85 PathProgramCache]: Analyzing trace with hash 411161283, now seen corresponding path program 1 times [2024-11-03 07:17:47,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:17:47,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892489505] [2024-11-03 07:17:47,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:17:47,899 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:17:47,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:17:47,902 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 07:17:47,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-03 07:17:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:17:48,004 WARN L253 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-03 07:17:48,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:17:48,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-03 07:17:48,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 1 [2024-11-03 07:17:48,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 07:17:48,263 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:17:48,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 07:17:48,294 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:17:48,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892489505] [2024-11-03 07:17:48,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1892489505] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 07:17:48,295 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 07:17:48,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 5 [2024-11-03 07:17:48,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367868261] [2024-11-03 07:17:48,295 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 07:17:48,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-03 07:17:48,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:17:48,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-03 07:17:48,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-03 07:17:48,297 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 07:17:48,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:17:48,677 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2024-11-03 07:17:48,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 07:17:48,679 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-03 07:17:48,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:17:48,679 INFO L225 Difference]: With dead ends: 31 [2024-11-03 07:17:48,679 INFO L226 Difference]: Without dead ends: 21 [2024-11-03 07:17:48,680 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-03 07:17:48,681 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 9 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 07:17:48,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 31 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-03 07:17:48,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-03 07:17:48,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-03 07:17:48,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 07:17:48,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-11-03 07:17:48,689 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 12 [2024-11-03 07:17:48,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:17:48,689 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-11-03 07:17:48,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 07:17:48,689 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-11-03 07:17:48,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-03 07:17:48,690 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:17:48,690 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 07:17:48,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-03 07:17:48,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 07:17:48,891 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:17:48,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:17:48,892 INFO L85 PathProgramCache]: Analyzing trace with hash 410179299, now seen corresponding path program 1 times [2024-11-03 07:17:48,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:17:48,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300271519] [2024-11-03 07:17:48,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:17:48,892 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:17:48,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:17:48,895 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 07:17:48,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-03 07:17:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:17:48,989 WARN L253 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-03 07:17:48,995 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:17:49,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-03 07:17:49,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 1 [2024-11-03 07:17:49,362 INFO L349 Elim1Store]: treesize reduction 54, result has 23.9 percent of original size [2024-11-03 07:17:49,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 34 treesize of output 40 [2024-11-03 07:17:50,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 23 [2024-11-03 07:17:50,230 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 07:17:50,230 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:17:50,390 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 07:17:50,392 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:17:50,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300271519] [2024-11-03 07:17:50,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [300271519] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 07:17:50,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 07:17:50,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2024-11-03 07:17:50,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467254356] [2024-11-03 07:17:50,393 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 07:17:50,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-03 07:17:50,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:17:50,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-03 07:17:50,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-03 07:17:50,395 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 07:17:52,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:17:52,288 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2024-11-03 07:17:52,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-03 07:17:52,289 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-03 07:17:52,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:17:52,290 INFO L225 Difference]: With dead ends: 36 [2024-11-03 07:17:52,290 INFO L226 Difference]: Without dead ends: 26 [2024-11-03 07:17:52,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2024-11-03 07:17:52,292 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 42 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-03 07:17:52,292 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 44 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-03 07:17:52,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-03 07:17:52,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2024-11-03 07:17:52,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 07:17:52,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2024-11-03 07:17:52,301 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 18 [2024-11-03 07:17:52,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:17:52,301 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2024-11-03 07:17:52,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 07:17:52,302 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2024-11-03 07:17:52,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-03 07:17:52,303 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:17:52,303 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 07:17:52,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-11-03 07:17:52,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 07:17:52,506 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:17:52,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:17:52,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1684866034, now seen corresponding path program 2 times [2024-11-03 07:17:52,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:17:52,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794534691] [2024-11-03 07:17:52,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:17:52,507 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:17:52,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:17:52,510 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 07:17:52,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-03 07:17:52,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:17:52,605 WARN L253 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-03 07:17:52,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:17:52,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-03 07:17:52,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 1 [2024-11-03 07:17:52,824 INFO L349 Elim1Store]: treesize reduction 54, result has 23.9 percent of original size [2024-11-03 07:17:52,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 34 treesize of output 40 [2024-11-03 07:17:53,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 23 [2024-11-03 07:17:53,851 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 07:17:53,852 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:17:53,953 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-03 07:17:53,953 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:17:53,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794534691] [2024-11-03 07:17:53,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [794534691] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 07:17:53,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 07:17:53,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2024-11-03 07:17:53,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83871766] [2024-11-03 07:17:53,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 07:17:53,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 07:17:53,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:17:53,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 07:17:53,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-03 07:17:53,957 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 07:17:54,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:17:54,538 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2024-11-03 07:17:54,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 07:17:54,538 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-03 07:17:54,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:17:54,539 INFO L225 Difference]: With dead ends: 33 [2024-11-03 07:17:54,539 INFO L226 Difference]: Without dead ends: 26 [2024-11-03 07:17:54,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-03 07:17:54,540 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 15 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-03 07:17:54,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 20 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-03 07:17:54,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-03 07:17:54,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-03 07:17:54,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 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 07:17:54,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2024-11-03 07:17:54,547 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 21 [2024-11-03 07:17:54,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:17:54,547 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2024-11-03 07:17:54,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 07:17:54,547 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2024-11-03 07:17:54,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-03 07:17:54,548 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:17:54,548 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 07:17:54,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2024-11-03 07:17:54,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 07:17:54,751 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:17:54,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:17:54,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1465781074, now seen corresponding path program 1 times [2024-11-03 07:17:54,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:17:54,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013286238] [2024-11-03 07:17:54,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:17:54,751 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:17:54,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:17:54,753 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 07:17:54,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-03 07:17:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:17:54,848 WARN L253 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-03 07:17:54,853 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:17:54,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-03 07:17:54,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 1 [2024-11-03 07:17:55,384 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 07:17:55,443 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-03 07:17:55,444 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:17:55,531 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-03 07:17:55,532 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:17:55,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013286238] [2024-11-03 07:17:55,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1013286238] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 07:17:55,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 07:17:55,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 15 [2024-11-03 07:17:55,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379913253] [2024-11-03 07:17:55,532 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 07:17:55,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-03 07:17:55,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:17:55,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-03 07:17:55,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-03 07:17:55,534 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 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 07:17:58,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-03 07:17:58,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:17:58,642 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2024-11-03 07:17:58,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-03 07:17:58,642 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-03 07:17:58,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:17:58,643 INFO L225 Difference]: With dead ends: 48 [2024-11-03 07:17:58,643 INFO L226 Difference]: Without dead ends: 40 [2024-11-03 07:17:58,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2024-11-03 07:17:58,644 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 68 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-03 07:17:58,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 56 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-03 07:17:58,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-03 07:17:58,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2024-11-03 07:17:58,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.162162162162162) internal successors, (43), 37 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 07:17:58,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2024-11-03 07:17:58,654 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 25 [2024-11-03 07:17:58,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:17:58,654 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2024-11-03 07:17:58,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 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 07:17:58,654 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2024-11-03 07:17:58,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-03 07:17:58,655 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:17:58,655 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 07:17:58,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2024-11-03 07:17:58,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 07:17:58,856 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:17:58,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:17:58,857 INFO L85 PathProgramCache]: Analyzing trace with hash -314962658, now seen corresponding path program 2 times [2024-11-03 07:17:58,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:17:58,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826833403] [2024-11-03 07:17:58,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:17:58,857 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:17:58,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:17:58,858 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 07:17:58,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-11-03 07:18:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-03 07:18:00,125 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-03 07:18:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-03 07:18:01,831 INFO L130 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2024-11-03 07:18:01,831 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-03 07:18:01,832 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-03 07:18:01,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2024-11-03 07:18:02,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 07:18:02,037 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2024-11-03 07:18:02,093 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-03 07:18:02,096 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 07:18:02 BoogieIcfgContainer [2024-11-03 07:18:02,096 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-03 07:18:02,096 INFO L158 Benchmark]: Toolchain (without parser) took 16806.10ms. Allocated memory was 183.5MB in the beginning and 286.3MB in the end (delta: 102.8MB). Free memory was 130.7MB in the beginning and 110.2MB in the end (delta: 20.5MB). Peak memory consumption was 123.9MB. Max. memory is 8.0GB. [2024-11-03 07:18:02,096 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 183.5MB. Free memory is still 136.7MB. There was no memory consumed. Max. memory is 8.0GB. [2024-11-03 07:18:02,097 INFO L158 Benchmark]: CACSL2BoogieTranslator took 768.00ms. Allocated memory was 183.5MB in the beginning and 286.3MB in the end (delta: 102.8MB). Free memory was 130.4MB in the beginning and 223.5MB in the end (delta: -93.1MB). Peak memory consumption was 43.2MB. Max. memory is 8.0GB. [2024-11-03 07:18:02,097 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.43ms. Allocated memory is still 286.3MB. Free memory was 223.5MB in the beginning and 220.4MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2024-11-03 07:18:02,097 INFO L158 Benchmark]: Boogie Preprocessor took 61.33ms. Allocated memory is still 286.3MB. Free memory was 220.4MB in the beginning and 217.7MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2024-11-03 07:18:02,097 INFO L158 Benchmark]: RCFGBuilder took 1145.60ms. Allocated memory is still 286.3MB. Free memory was 217.7MB in the beginning and 201.5MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2024-11-03 07:18:02,098 INFO L158 Benchmark]: TraceAbstraction took 14764.12ms. Allocated memory is still 286.3MB. Free memory was 200.4MB in the beginning and 110.2MB in the end (delta: 90.2MB). Peak memory consumption was 90.2MB. Max. memory is 8.0GB. [2024-11-03 07:18:02,099 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 183.5MB. Free memory is still 136.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 768.00ms. Allocated memory was 183.5MB in the beginning and 286.3MB in the end (delta: 102.8MB). Free memory was 130.4MB in the beginning and 223.5MB in the end (delta: -93.1MB). Peak memory consumption was 43.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 56.43ms. Allocated memory is still 286.3MB. Free memory was 223.5MB in the beginning and 220.4MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 61.33ms. Allocated memory is still 286.3MB. Free memory was 220.4MB in the beginning and 217.7MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 1145.60ms. Allocated memory is still 286.3MB. Free memory was 217.7MB in the beginning and 201.5MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 14764.12ms. Allocated memory is still 286.3MB. Free memory was 200.4MB in the beginning and 110.2MB in the end (delta: 90.2MB). Peak memory consumption was 90.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 870]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of expf at line 854, overapproximation of __builtin_isinf_sign at line 868. Possible FailurePath: [L863] float x[4], y[4]; [L864] x[0] = __VERIFIER_nondet_float() [L865] EXPR x[0] [L865] x[1] = x[0] + 1e-5f [L866] x[2] = 0.123456f [L867] x[3] = 0.654321f [L868] EXPR x[0] [L868] COND FALSE !(!(!__builtin_isnan (x[0]) && !__builtin_isinf_sign (x[0]))) [L869] CALL softmax(x, y, 4) [L847] int i; [L848] EXPR x[0] [L848] float max = x[0]; [L849] i = 1 VAL [i=1, max=0.00005877017247257754, n=4, x={-1:0}, y={-2:0}] [L849] COND TRUE i < n [L850] EXPR x[i] [L850] COND TRUE x[i] > max [L851] EXPR x[i] [L851] max = x[i] VAL [i=1, max=0.00006877016858197749, n=4, x={-1:0}, y={-2:0}] [L849] ++i VAL [i=2, max=0.00006877016858197749, n=4, x={-1:0}, y={-2:0}] [L849] COND TRUE i < n [L850] EXPR x[i] [L850] COND TRUE x[i] > max [L851] EXPR x[i] [L851] max = x[i] VAL [i=2, max=0.12345600128173828, n=4, x={-1:0}, y={-2:0}] [L849] ++i VAL [i=3, max=0.12345600128173828, n=4, x={-1:0}, y={-2:0}] [L849] COND TRUE i < n [L850] EXPR x[i] [L850] COND TRUE x[i] > max [L851] EXPR x[i] [L851] max = x[i] VAL [i=3, max=0.654321014881134, n=4, x={-1:0}, y={-2:0}] [L849] ++i VAL [i=4, max=0.654321014881134, n=4, x={-1:0}, y={-2:0}] [L849] COND FALSE !(i < n) VAL [max=0.654321014881134, n=4, x={-1:0}, y={-2:0}] [L852] float sum = 0.0f; [L853] i = 0 VAL [i=0, max=0.654321014881134, n=4, sum=0.0, x={-1:0}, y={-2:0}] [L853] COND TRUE i < n [L854] EXPR x[i] [L854] float z = expf(x[i] - max); [L855] sum += z [L856] y[i] = z [L853] ++i VAL [i=1, max=0.654321014881134, n=4, sum=0.000000000000000000000000000000000000000000001401298464324817, x={-1:0}, y={-2:0}] [L853] COND TRUE i < n [L854] EXPR x[i] [L854] float z = expf(x[i] - max); [L855] sum += z [L856] y[i] = z [L853] ++i VAL [i=2, max=0.654321014881134, n=4, sum=-0.0000000000000000000000000000000000000470197740328915, x={-1:0}, y={-2:0}] [L853] COND TRUE i < n [L854] EXPR x[i] [L854] float z = expf(x[i] - max); [L855] sum += z [L856] y[i] = z [L853] ++i VAL [i=3, max=0.654321014881134, n=4, sum=-0.00000000000000000005421010862427522, x={-1:0}, y={-2:0}] [L853] COND TRUE i < n [L854] EXPR x[i] [L854] float z = expf(x[i] - max); [L855] sum += z [L856] y[i] = z [L853] ++i VAL [i=4, max=0.654321014881134, n=4, sum=0.0, x={-1:0}, y={-2:0}] [L853] COND FALSE !(i < n) VAL [max=0.654321014881134, n=4, sum=0.0, x={-1:0}, y={-2:0}] [L858] i = 0 VAL [i=0, max=0.654321014881134, n=4, sum=0.0, x={-1:0}, y={-2:0}] [L858] COND TRUE i < n [L859] EXPR y[i] [L859] y[i] /= sum [L858] ++i VAL [i=1, max=0.654321014881134, n=4, sum=0.0, x={-1:0}, y={-2:0}] [L858] COND TRUE i < n [L859] EXPR y[i] [L859] y[i] /= sum [L858] ++i VAL [i=2, max=0.654321014881134, n=4, sum=0.0, x={-1:0}, y={-2:0}] [L858] COND TRUE i < n [L859] EXPR y[i] [L859] y[i] /= sum [L858] ++i VAL [i=3, max=0.654321014881134, n=4, sum=0.0, x={-1:0}, y={-2:0}] [L858] COND TRUE i < n [L859] EXPR y[i] [L859] y[i] /= sum [L858] ++i VAL [i=4, max=0.654321014881134, n=4, sum=0.0, x={-1:0}, y={-2:0}] [L858] COND FALSE !(i < n) VAL [max=0.654321014881134, sum=0.0, x={-1:0}, y={-2:0}] [L869] RET softmax(x, y, 4) [L870] EXPR y[2] [L870] EXPR y[3] [L870] COND TRUE !(__builtin_isgreaterequal(y[2], y[3])) [L870] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 14.6s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 134 SdHoareTripleChecker+Valid, 5.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 134 mSDsluCounter, 175 SdHoareTripleChecker+Invalid, 5.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 106 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 387 IncrementalHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 69 mSDtfsCounter, 387 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 176 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=5, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 166 ConstructedInterpolants, 0 QuantifiedInterpolants, 2020 SizeOfPredicates, 67 NumberOfNonLiveVariables, 426 ConjunctsInSsa, 244 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 26/62 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-03 07:18:02,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...