/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'cvc4 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/bitvector/s3_clnt_2.BV.c.cil-1a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 02:02:38,554 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 02:02:38,612 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-03 02:02:38,616 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 02:02:38,617 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 02:02:38,637 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 02:02:38,638 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 02:02:38,638 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 02:02:38,639 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 02:02:38,639 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 02:02:38,640 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 02:02:38,640 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 02:02:38,640 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 02:02:38,640 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 02:02:38,641 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 02:02:38,641 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 02:02:38,641 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 02:02:38,641 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 02:02:38,642 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 02:02:38,642 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 02:02:38,642 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 02:02:38,642 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 02:02:38,643 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 02:02:38,643 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 02:02:38,643 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 02:02:38,643 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 02:02:38,643 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 02:02:38,644 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 02:02:38,644 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 02:02:38,644 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 02:02:38,644 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 02:02:38,644 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 02:02:38,645 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 02:02:38,645 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 02:02:38,645 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 02:02:38,645 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 02:02:38,645 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 02:02:38,646 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 02:02:38,646 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 02:02:38,647 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:38,648 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 02:02:38,648 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 02:02:38,648 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 02:02:38,648 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 02:02:38,649 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:38,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 02:02:38,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 02:02:38,834 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 02:02:38,835 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 02:02:38,835 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 02:02:38,836 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/s3_clnt_2.BV.c.cil-1a.c [2024-11-03 02:02:40,076 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 02:02:40,228 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 02:02:40,228 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/s3_clnt_2.BV.c.cil-1a.c [2024-11-03 02:02:40,242 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fe31c3c0/362bd320152b4693abc8978b415dddd0/FLAGac9be86da [2024-11-03 02:02:40,253 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fe31c3c0/362bd320152b4693abc8978b415dddd0 [2024-11-03 02:02:40,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 02:02:40,257 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 02:02:40,258 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 02:02:40,258 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 02:02:40,262 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 02:02:40,263 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:02:40" (1/1) ... [2024-11-03 02:02:40,264 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@526b9cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:40, skipping insertion in model container [2024-11-03 02:02:40,264 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:02:40" (1/1) ... [2024-11-03 02:02:40,298 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 02:02:40,461 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/s3_clnt_2.BV.c.cil-1a.c[37676,37689] [2024-11-03 02:02:40,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 02:02:40,478 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 02:02:40,511 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/s3_clnt_2.BV.c.cil-1a.c[37676,37689] [2024-11-03 02:02:40,513 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 02:02:40,526 INFO L204 MainTranslator]: Completed translation [2024-11-03 02:02:40,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:40 WrapperNode [2024-11-03 02:02:40,527 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 02:02:40,528 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 02:02:40,528 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 02:02:40,528 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 02:02:40,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:40" (1/1) ... [2024-11-03 02:02:40,538 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:40" (1/1) ... [2024-11-03 02:02:40,560 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 470 [2024-11-03 02:02:40,561 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 02:02:40,561 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 02:02:40,561 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 02:02:40,561 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 02:02:40,570 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:40" (1/1) ... [2024-11-03 02:02:40,570 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:40" (1/1) ... [2024-11-03 02:02:40,574 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:40" (1/1) ... [2024-11-03 02:02:40,582 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-03 02:02:40,582 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:40" (1/1) ... [2024-11-03 02:02:40,582 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:40" (1/1) ... [2024-11-03 02:02:40,589 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:40" (1/1) ... [2024-11-03 02:02:40,594 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:40" (1/1) ... [2024-11-03 02:02:40,599 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:40" (1/1) ... [2024-11-03 02:02:40,600 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:40" (1/1) ... [2024-11-03 02:02:40,604 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 02:02:40,605 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 02:02:40,605 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 02:02:40,605 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 02:02:40,606 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:40" (1/1) ... [2024-11-03 02:02:40,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 02:02:40,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 02:02:40,636 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-03 02:02:40,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-03 02:02:40,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 02:02:40,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 02:02:40,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 02:02:40,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 02:02:40,737 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 02:02:40,739 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 02:02:40,753 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-03 02:02:41,121 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2024-11-03 02:02:41,121 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2024-11-03 02:02:41,164 INFO L? ?]: Removed 116 outVars from TransFormulas that were not future-live. [2024-11-03 02:02:41,164 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 02:02:41,179 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 02:02:41,179 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 02:02:41,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:02:41 BoogieIcfgContainer [2024-11-03 02:02:41,180 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 02:02:41,182 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 02:02:41,182 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 02:02:41,184 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 02:02:41,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:02:40" (1/3) ... [2024-11-03 02:02:41,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b87868d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:02:41, skipping insertion in model container [2024-11-03 02:02:41,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:40" (2/3) ... [2024-11-03 02:02:41,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b87868d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:02:41, skipping insertion in model container [2024-11-03 02:02:41,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:02:41" (3/3) ... [2024-11-03 02:02:41,186 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_clnt_2.BV.c.cil-1a.c [2024-11-03 02:02:41,200 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 02:02:41,201 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 02:02:41,248 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 02:02:41,252 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;@43be89ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 02:02:41,252 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 02:02:41,255 INFO L276 IsEmpty]: Start isEmpty. Operand has 125 states, 123 states have (on average 1.7317073170731707) internal successors, (213), 124 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:41,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-03 02:02:41,260 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:02:41,260 INFO L215 NwaCegarLoop]: trace histogram [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 02:02:41,260 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:02:41,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:02:41,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1457697026, now seen corresponding path program 1 times [2024-11-03 02:02:41,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:02:41,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839769257] [2024-11-03 02:02:41,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:02:41,270 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:41,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:02:41,272 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:02:41,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-03 02:02:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:02:41,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:02:41,349 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:02:41,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 02:02:41,406 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:02:41,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 02:02:41,435 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:02:41,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839769257] [2024-11-03 02:02:41,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1839769257] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:02:41,436 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:02:41,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 02:02:41,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474597059] [2024-11-03 02:02:41,438 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:02:41,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 02:02:41,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:02:41,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 02:02:41,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 02:02:41,460 INFO L87 Difference]: Start difference. First operand has 125 states, 123 states have (on average 1.7317073170731707) internal successors, (213), 124 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:41,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:02:41,579 INFO L93 Difference]: Finished difference Result 246 states and 421 transitions. [2024-11-03 02:02:41,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 02:02:41,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2024-11-03 02:02:41,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:02:41,590 INFO L225 Difference]: With dead ends: 246 [2024-11-03 02:02:41,591 INFO L226 Difference]: Without dead ends: 112 [2024-11-03 02:02:41,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 02:02:41,598 INFO L432 NwaCegarLoop]: 208 mSDtfsCounter, 6 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 02:02:41,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 319 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 02:02:41,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-03 02:02:41,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-11-03 02:02:41,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.5225225225225225) internal successors, (169), 111 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:41,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 169 transitions. [2024-11-03 02:02:41,626 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 169 transitions. Word has length 24 [2024-11-03 02:02:41,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:02:41,627 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 169 transitions. [2024-11-03 02:02:41,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:41,627 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 169 transitions. [2024-11-03 02:02:41,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-03 02:02:41,631 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:02:41,631 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, 1, 1, 1, 1, 1] [2024-11-03 02:02:41,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-11-03 02:02:41,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:41,833 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:02:41,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:02:41,834 INFO L85 PathProgramCache]: Analyzing trace with hash -611475394, now seen corresponding path program 1 times [2024-11-03 02:02:41,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:02:41,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5241401] [2024-11-03 02:02:41,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:02:41,834 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:41,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:02:41,836 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:02:41,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-03 02:02:41,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:02:41,901 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:02:41,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:02:41,929 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 02:02:41,929 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:02:41,957 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 02:02:41,957 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:02:41,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5241401] [2024-11-03 02:02:41,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [5241401] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:02:41,957 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:02:41,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 02:02:41,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019890051] [2024-11-03 02:02:41,958 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:02:41,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 02:02:41,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:02:41,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 02:02:41,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 02:02:41,960 INFO L87 Difference]: Start difference. First operand 112 states and 169 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:42,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:02:42,075 INFO L93 Difference]: Finished difference Result 229 states and 350 transitions. [2024-11-03 02:02:42,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 02:02:42,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 36 [2024-11-03 02:02:42,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:02:42,076 INFO L225 Difference]: With dead ends: 229 [2024-11-03 02:02:42,076 INFO L226 Difference]: Without dead ends: 127 [2024-11-03 02:02:42,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 02:02:42,078 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 9 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 02:02:42,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 239 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 02:02:42,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-03 02:02:42,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2024-11-03 02:02:42,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.5) internal successors, (189), 126 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:42,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 189 transitions. [2024-11-03 02:02:42,086 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 189 transitions. Word has length 36 [2024-11-03 02:02:42,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:02:42,087 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 189 transitions. [2024-11-03 02:02:42,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:42,087 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 189 transitions. [2024-11-03 02:02:42,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-03 02:02:42,088 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:02:42,088 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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 02:02:42,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-03 02:02:42,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:42,294 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:02:42,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:02:42,295 INFO L85 PathProgramCache]: Analyzing trace with hash 213639527, now seen corresponding path program 1 times [2024-11-03 02:02:42,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:02:42,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226084304] [2024-11-03 02:02:42,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:02:42,295 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:42,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:02:42,298 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:02:42,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-03 02:02:42,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:02:42,381 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:02:42,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:02:42,422 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-03 02:02:42,423 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:02:42,451 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-03 02:02:42,452 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:02:42,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226084304] [2024-11-03 02:02:42,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1226084304] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:02:42,452 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:02:42,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 02:02:42,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613334861] [2024-11-03 02:02:42,452 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:02:42,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 02:02:42,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:02:42,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 02:02:42,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 02:02:42,454 INFO L87 Difference]: Start difference. First operand 127 states and 189 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:42,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:02:42,562 INFO L93 Difference]: Finished difference Result 261 states and 394 transitions. [2024-11-03 02:02:42,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 02:02:42,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 50 [2024-11-03 02:02:42,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:02:42,564 INFO L225 Difference]: With dead ends: 261 [2024-11-03 02:02:42,564 INFO L226 Difference]: Without dead ends: 144 [2024-11-03 02:02:42,564 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 02:02:42,565 INFO L432 NwaCegarLoop]: 174 mSDtfsCounter, 10 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 02:02:42,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 252 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 02:02:42,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-03 02:02:42,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-11-03 02:02:42,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.4755244755244756) internal successors, (211), 143 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:42,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 211 transitions. [2024-11-03 02:02:42,579 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 211 transitions. Word has length 50 [2024-11-03 02:02:42,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:02:42,579 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 211 transitions. [2024-11-03 02:02:42,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:42,579 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 211 transitions. [2024-11-03 02:02:42,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-03 02:02:42,582 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:02:42,582 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-03 02:02:42,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-11-03 02:02:42,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:42,786 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:02:42,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:02:42,786 INFO L85 PathProgramCache]: Analyzing trace with hash 370823208, now seen corresponding path program 1 times [2024-11-03 02:02:42,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:02:42,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986299188] [2024-11-03 02:02:42,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:02:42,787 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:42,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:02:42,789 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:02:42,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-03 02:02:42,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:02:42,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:02:42,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:02:42,914 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-03 02:02:42,915 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:02:42,957 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-03 02:02:42,957 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:02:42,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986299188] [2024-11-03 02:02:42,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1986299188] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:02:42,957 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:02:42,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 02:02:42,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548910813] [2024-11-03 02:02:42,958 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:02:42,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 02:02:42,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:02:42,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 02:02:42,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 02:02:42,959 INFO L87 Difference]: Start difference. First operand 144 states and 211 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:43,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:02:43,009 INFO L93 Difference]: Finished difference Result 540 states and 798 transitions. [2024-11-03 02:02:43,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 02:02:43,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-03 02:02:43,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:02:43,012 INFO L225 Difference]: With dead ends: 540 [2024-11-03 02:02:43,012 INFO L226 Difference]: Without dead ends: 406 [2024-11-03 02:02:43,012 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 02:02:43,015 INFO L432 NwaCegarLoop]: 195 mSDtfsCounter, 259 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 02:02:43,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 491 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 02:02:43,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2024-11-03 02:02:43,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 406. [2024-11-03 02:02:43,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 405 states have (on average 1.4666666666666666) internal successors, (594), 405 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:43,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 594 transitions. [2024-11-03 02:02:43,037 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 594 transitions. Word has length 67 [2024-11-03 02:02:43,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:02:43,037 INFO L471 AbstractCegarLoop]: Abstraction has 406 states and 594 transitions. [2024-11-03 02:02:43,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:43,038 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 594 transitions. [2024-11-03 02:02:43,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-03 02:02:43,039 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:02:43,039 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-03 02:02:43,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2024-11-03 02:02:43,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:43,242 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:02:43,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:02:43,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1005277369, now seen corresponding path program 1 times [2024-11-03 02:02:43,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:02:43,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280410695] [2024-11-03 02:02:43,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:02:43,243 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:43,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:02:43,245 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:02:43,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-03 02:02:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:02:43,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:02:43,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:02:43,364 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-03 02:02:43,364 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:02:43,409 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-03 02:02:43,409 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:02:43,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280410695] [2024-11-03 02:02:43,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [280410695] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:02:43,409 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:02:43,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 02:02:43,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282229137] [2024-11-03 02:02:43,410 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:02:43,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 02:02:43,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:02:43,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 02:02:43,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 02:02:43,411 INFO L87 Difference]: Start difference. First operand 406 states and 594 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:43,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:02:43,429 INFO L93 Difference]: Finished difference Result 828 states and 1208 transitions. [2024-11-03 02:02:43,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 02:02:43,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 68 [2024-11-03 02:02:43,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:02:43,432 INFO L225 Difference]: With dead ends: 828 [2024-11-03 02:02:43,432 INFO L226 Difference]: Without dead ends: 432 [2024-11-03 02:02:43,433 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 02:02:43,434 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 20 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 02:02:43,436 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 309 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 02:02:43,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2024-11-03 02:02:43,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 432. [2024-11-03 02:02:43,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 431 states have (on average 1.4547563805104409) internal successors, (627), 431 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:43,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 627 transitions. [2024-11-03 02:02:43,451 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 627 transitions. Word has length 68 [2024-11-03 02:02:43,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:02:43,452 INFO L471 AbstractCegarLoop]: Abstraction has 432 states and 627 transitions. [2024-11-03 02:02:43,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:43,452 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 627 transitions. [2024-11-03 02:02:43,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-03 02:02:43,454 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:02:43,454 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 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] [2024-11-03 02:02:43,462 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2024-11-03 02:02:43,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:43,662 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:02:43,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:02:43,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1702934221, now seen corresponding path program 1 times [2024-11-03 02:02:43,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:02:43,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280295736] [2024-11-03 02:02:43,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:02:43,663 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:43,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:02:43,664 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:02:43,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-11-03 02:02:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:02:43,753 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:02:43,758 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:02:43,783 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-03 02:02:43,784 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:02:43,807 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-03 02:02:43,807 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:02:43,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280295736] [2024-11-03 02:02:43,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [280295736] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:02:43,808 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:02:43,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 02:02:43,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735654311] [2024-11-03 02:02:43,808 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:02:43,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 02:02:43,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:02:43,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 02:02:43,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 02:02:43,810 INFO L87 Difference]: Start difference. First operand 432 states and 627 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:43,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:02:43,832 INFO L93 Difference]: Finished difference Result 849 states and 1235 transitions. [2024-11-03 02:02:43,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 02:02:43,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 99 [2024-11-03 02:02:43,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:02:43,834 INFO L225 Difference]: With dead ends: 849 [2024-11-03 02:02:43,834 INFO L226 Difference]: Without dead ends: 453 [2024-11-03 02:02:43,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 02:02:43,836 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 11 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 02:02:43,837 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 337 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 02:02:43,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2024-11-03 02:02:43,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 453. [2024-11-03 02:02:43,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 452 states have (on average 1.4469026548672566) internal successors, (654), 452 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:43,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 654 transitions. [2024-11-03 02:02:43,848 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 654 transitions. Word has length 99 [2024-11-03 02:02:43,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:02:43,849 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 654 transitions. [2024-11-03 02:02:43,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:43,850 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 654 transitions. [2024-11-03 02:02:43,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-03 02:02:43,851 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:02:43,851 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 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, 1] [2024-11-03 02:02:43,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2024-11-03 02:02:44,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:44,052 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:02:44,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:02:44,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1903480751, now seen corresponding path program 1 times [2024-11-03 02:02:44,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:02:44,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487467919] [2024-11-03 02:02:44,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:02:44,053 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:44,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:02:44,054 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:02:44,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-11-03 02:02:44,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:02:44,132 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:02:44,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:02:44,161 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-03 02:02:44,161 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:02:44,186 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-03 02:02:44,187 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:02:44,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487467919] [2024-11-03 02:02:44,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [487467919] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:02:44,187 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:02:44,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 02:02:44,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718283578] [2024-11-03 02:02:44,187 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:02:44,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 02:02:44,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:02:44,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 02:02:44,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 02:02:44,188 INFO L87 Difference]: Start difference. First operand 453 states and 654 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:44,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:02:44,365 INFO L93 Difference]: Finished difference Result 1047 states and 1588 transitions. [2024-11-03 02:02:44,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 02:02:44,366 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 117 [2024-11-03 02:02:44,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:02:44,368 INFO L225 Difference]: With dead ends: 1047 [2024-11-03 02:02:44,368 INFO L226 Difference]: Without dead ends: 630 [2024-11-03 02:02:44,369 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 02:02:44,369 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 82 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 02:02:44,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 255 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 02:02:44,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2024-11-03 02:02:44,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 630. [2024-11-03 02:02:44,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 629 states have (on average 1.411764705882353) internal successors, (888), 629 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:44,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 888 transitions. [2024-11-03 02:02:44,379 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 888 transitions. Word has length 117 [2024-11-03 02:02:44,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:02:44,380 INFO L471 AbstractCegarLoop]: Abstraction has 630 states and 888 transitions. [2024-11-03 02:02:44,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:44,380 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 888 transitions. [2024-11-03 02:02:44,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-03 02:02:44,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:02:44,381 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 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, 1] [2024-11-03 02:02:44,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2024-11-03 02:02:44,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:44,582 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:02:44,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:02:44,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1324994347, now seen corresponding path program 1 times [2024-11-03 02:02:44,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:02:44,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856592895] [2024-11-03 02:02:44,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:02:44,583 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:44,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:02:44,584 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:02:44,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-11-03 02:02:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:02:44,666 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:02:44,667 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:02:44,700 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2024-11-03 02:02:44,700 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:02:44,725 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2024-11-03 02:02:44,725 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:02:44,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856592895] [2024-11-03 02:02:44,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1856592895] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:02:44,725 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:02:44,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 02:02:44,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635614518] [2024-11-03 02:02:44,725 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:02:44,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 02:02:44,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:02:44,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 02:02:44,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 02:02:44,726 INFO L87 Difference]: Start difference. First operand 630 states and 888 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:44,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:02:44,823 INFO L93 Difference]: Finished difference Result 1281 states and 1831 transitions. [2024-11-03 02:02:44,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 02:02:44,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 117 [2024-11-03 02:02:44,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:02:44,826 INFO L225 Difference]: With dead ends: 1281 [2024-11-03 02:02:44,826 INFO L226 Difference]: Without dead ends: 687 [2024-11-03 02:02:44,827 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 02:02:44,827 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 9 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 02:02:44,827 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 257 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 02:02:44,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2024-11-03 02:02:44,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 687. [2024-11-03 02:02:44,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 686 states have (on average 1.3994169096209912) internal successors, (960), 686 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:44,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 960 transitions. [2024-11-03 02:02:44,838 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 960 transitions. Word has length 117 [2024-11-03 02:02:44,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:02:44,838 INFO L471 AbstractCegarLoop]: Abstraction has 687 states and 960 transitions. [2024-11-03 02:02:44,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:44,839 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 960 transitions. [2024-11-03 02:02:44,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-03 02:02:44,840 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:02:44,840 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 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 02:02:44,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2024-11-03 02:02:45,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:45,041 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:02:45,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:02:45,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1158765397, now seen corresponding path program 1 times [2024-11-03 02:02:45,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:02:45,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722606405] [2024-11-03 02:02:45,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:02:45,041 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:45,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:02:45,042 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:02:45,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2024-11-03 02:02:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:02:45,126 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:02:45,127 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:02:45,183 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-03 02:02:45,183 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:02:45,243 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-03 02:02:45,243 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:02:45,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722606405] [2024-11-03 02:02:45,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1722606405] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:02:45,243 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:02:45,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 02:02:45,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516742129] [2024-11-03 02:02:45,243 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:02:45,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 02:02:45,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:02:45,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 02:02:45,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 02:02:45,245 INFO L87 Difference]: Start difference. First operand 687 states and 960 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:45,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:02:45,262 INFO L93 Difference]: Finished difference Result 1566 states and 2189 transitions. [2024-11-03 02:02:45,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 02:02:45,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 133 [2024-11-03 02:02:45,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:02:45,265 INFO L225 Difference]: With dead ends: 1566 [2024-11-03 02:02:45,265 INFO L226 Difference]: Without dead ends: 915 [2024-11-03 02:02:45,266 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 02:02:45,267 INFO L432 NwaCegarLoop]: 311 mSDtfsCounter, 124 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 466 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 02:02:45,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 466 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 02:02:45,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2024-11-03 02:02:45,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 915. [2024-11-03 02:02:45,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 914 states have (on average 1.3927789934354486) internal successors, (1273), 914 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:45,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1273 transitions. [2024-11-03 02:02:45,283 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1273 transitions. Word has length 133 [2024-11-03 02:02:45,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:02:45,283 INFO L471 AbstractCegarLoop]: Abstraction has 915 states and 1273 transitions. [2024-11-03 02:02:45,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:45,283 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1273 transitions. [2024-11-03 02:02:45,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-03 02:02:45,285 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:02:45,285 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2024-11-03 02:02:45,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2024-11-03 02:02:45,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:45,486 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:02:45,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:02:45,486 INFO L85 PathProgramCache]: Analyzing trace with hash 39179891, now seen corresponding path program 1 times [2024-11-03 02:02:45,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:02:45,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021242642] [2024-11-03 02:02:45,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:02:45,486 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:45,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:02:45,488 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:02:45,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2024-11-03 02:02:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:02:45,570 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:02:45,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:02:45,594 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2024-11-03 02:02:45,594 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:02:45,615 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2024-11-03 02:02:45,616 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:02:45,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021242642] [2024-11-03 02:02:45,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2021242642] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:02:45,616 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:02:45,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 02:02:45,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705218928] [2024-11-03 02:02:45,616 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:02:45,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 02:02:45,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:02:45,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 02:02:45,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 02:02:45,617 INFO L87 Difference]: Start difference. First operand 915 states and 1273 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:45,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:02:45,717 INFO L93 Difference]: Finished difference Result 1836 states and 2583 transitions. [2024-11-03 02:02:45,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 02:02:45,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 135 [2024-11-03 02:02:45,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:02:45,720 INFO L225 Difference]: With dead ends: 1836 [2024-11-03 02:02:45,720 INFO L226 Difference]: Without dead ends: 978 [2024-11-03 02:02:45,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 02:02:45,723 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 9 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 02:02:45,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 256 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 02:02:45,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2024-11-03 02:02:45,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 978. [2024-11-03 02:02:45,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 977 states have (on average 1.382804503582395) internal successors, (1351), 977 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:45,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1351 transitions. [2024-11-03 02:02:45,740 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1351 transitions. Word has length 135 [2024-11-03 02:02:45,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:02:45,740 INFO L471 AbstractCegarLoop]: Abstraction has 978 states and 1351 transitions. [2024-11-03 02:02:45,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:45,740 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1351 transitions. [2024-11-03 02:02:45,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-03 02:02:45,742 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:02:45,742 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 6, 6, 4, 4, 3, 3, 2, 2, 2, 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, 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 02:02:45,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2024-11-03 02:02:45,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:45,943 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:02:45,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:02:45,944 INFO L85 PathProgramCache]: Analyzing trace with hash -934053929, now seen corresponding path program 1 times [2024-11-03 02:02:45,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:02:45,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480191140] [2024-11-03 02:02:45,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:02:45,944 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:45,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:02:45,946 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:02:45,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2024-11-03 02:02:46,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:02:46,029 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:02:46,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:02:46,074 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-03 02:02:46,074 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:02:46,114 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-03 02:02:46,114 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:02:46,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480191140] [2024-11-03 02:02:46,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [480191140] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:02:46,114 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:02:46,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 02:02:46,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707574499] [2024-11-03 02:02:46,114 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:02:46,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 02:02:46,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:02:46,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 02:02:46,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 02:02:46,115 INFO L87 Difference]: Start difference. First operand 978 states and 1351 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:46,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:02:46,139 INFO L93 Difference]: Finished difference Result 2433 states and 3405 transitions. [2024-11-03 02:02:46,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 02:02:46,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 175 [2024-11-03 02:02:46,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:02:46,143 INFO L225 Difference]: With dead ends: 2433 [2024-11-03 02:02:46,143 INFO L226 Difference]: Without dead ends: 1512 [2024-11-03 02:02:46,144 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 02:02:46,145 INFO L432 NwaCegarLoop]: 283 mSDtfsCounter, 113 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 02:02:46,145 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 440 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 02:02:46,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2024-11-03 02:02:46,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1510. [2024-11-03 02:02:46,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1510 states, 1509 states have (on average 1.4015904572564613) internal successors, (2115), 1509 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:46,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1510 states to 1510 states and 2115 transitions. [2024-11-03 02:02:46,166 INFO L78 Accepts]: Start accepts. Automaton has 1510 states and 2115 transitions. Word has length 175 [2024-11-03 02:02:46,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:02:46,166 INFO L471 AbstractCegarLoop]: Abstraction has 1510 states and 2115 transitions. [2024-11-03 02:02:46,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:46,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1510 states and 2115 transitions. [2024-11-03 02:02:46,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-03 02:02:46,168 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:02:46,169 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 6, 6, 4, 4, 3, 3, 2, 2, 2, 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, 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 02:02:46,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2024-11-03 02:02:46,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:46,369 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:02:46,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:02:46,370 INFO L85 PathProgramCache]: Analyzing trace with hash 871384405, now seen corresponding path program 1 times [2024-11-03 02:02:46,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:02:46,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975324666] [2024-11-03 02:02:46,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:02:46,370 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:46,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:02:46,372 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:02:46,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2024-11-03 02:02:46,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:02:46,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:02:46,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:02:46,595 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-11-03 02:02:46,595 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:02:46,701 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-11-03 02:02:46,702 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:02:46,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975324666] [2024-11-03 02:02:46,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [975324666] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:02:46,702 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:02:46,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 02:02:46,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770315999] [2024-11-03 02:02:46,702 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:02:46,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 02:02:46,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:02:46,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 02:02:46,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 02:02:46,703 INFO L87 Difference]: Start difference. First operand 1510 states and 2115 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:46,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:02:46,726 INFO L93 Difference]: Finished difference Result 2355 states and 3284 transitions. [2024-11-03 02:02:46,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 02:02:46,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 175 [2024-11-03 02:02:46,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:02:46,731 INFO L225 Difference]: With dead ends: 2355 [2024-11-03 02:02:46,731 INFO L226 Difference]: Without dead ends: 1514 [2024-11-03 02:02:46,733 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 02:02:46,733 INFO L432 NwaCegarLoop]: 234 mSDtfsCounter, 92 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 02:02:46,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 393 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 02:02:46,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2024-11-03 02:02:46,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1512. [2024-11-03 02:02:46,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1511 states have (on average 1.3951025810721376) internal successors, (2108), 1511 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:46,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 2108 transitions. [2024-11-03 02:02:46,758 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 2108 transitions. Word has length 175 [2024-11-03 02:02:46,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:02:46,758 INFO L471 AbstractCegarLoop]: Abstraction has 1512 states and 2108 transitions. [2024-11-03 02:02:46,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:46,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 2108 transitions. [2024-11-03 02:02:46,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-03 02:02:46,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:02:46,760 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-03 02:02:46,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2024-11-03 02:02:46,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:46,961 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:02:46,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:02:46,961 INFO L85 PathProgramCache]: Analyzing trace with hash 324123553, now seen corresponding path program 1 times [2024-11-03 02:02:46,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:02:46,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928972863] [2024-11-03 02:02:46,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:02:46,961 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:46,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:02:46,963 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:02:46,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2024-11-03 02:02:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:02:47,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:02:47,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:02:47,087 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2024-11-03 02:02:47,087 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:02:47,105 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2024-11-03 02:02:47,105 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:02:47,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928972863] [2024-11-03 02:02:47,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1928972863] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:02:47,105 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:02:47,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 02:02:47,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937817436] [2024-11-03 02:02:47,105 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:02:47,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 02:02:47,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:02:47,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 02:02:47,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 02:02:47,106 INFO L87 Difference]: Start difference. First operand 1512 states and 2108 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:47,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:02:47,245 INFO L93 Difference]: Finished difference Result 3011 states and 4248 transitions. [2024-11-03 02:02:47,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 02:02:47,245 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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 175 [2024-11-03 02:02:47,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:02:47,249 INFO L225 Difference]: With dead ends: 3011 [2024-11-03 02:02:47,249 INFO L226 Difference]: Without dead ends: 1558 [2024-11-03 02:02:47,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 02:02:47,251 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 75 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 02:02:47,251 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 219 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 02:02:47,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2024-11-03 02:02:47,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1558. [2024-11-03 02:02:47,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1558 states, 1557 states have (on average 1.361592806679512) internal successors, (2120), 1557 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:47,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2120 transitions. [2024-11-03 02:02:47,274 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2120 transitions. Word has length 175 [2024-11-03 02:02:47,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:02:47,274 INFO L471 AbstractCegarLoop]: Abstraction has 1558 states and 2120 transitions. [2024-11-03 02:02:47,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:47,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2120 transitions. [2024-11-03 02:02:47,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-03 02:02:47,276 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:02:47,276 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-03 02:02:47,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2024-11-03 02:02:47,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:47,477 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:02:47,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:02:47,478 INFO L85 PathProgramCache]: Analyzing trace with hash 342847369, now seen corresponding path program 1 times [2024-11-03 02:02:47,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:02:47,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731584579] [2024-11-03 02:02:47,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:02:47,478 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:47,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:02:47,481 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:02:47,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2024-11-03 02:02:47,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:02:47,602 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 02:02:47,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:02:47,734 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 458 proven. 20 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-03 02:02:47,734 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:02:47,842 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 442 proven. 36 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-03 02:02:47,842 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:02:47,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731584579] [2024-11-03 02:02:47,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [731584579] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 02:02:47,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 02:02:47,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-03 02:02:47,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667137932] [2024-11-03 02:02:47,843 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 02:02:47,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 02:02:47,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:02:47,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 02:02:47,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-03 02:02:47,844 INFO L87 Difference]: Start difference. First operand 1558 states and 2120 transitions. Second operand has 8 states, 8 states have (on average 23.375) internal successors, (187), 8 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:48,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:02:48,231 INFO L93 Difference]: Finished difference Result 3517 states and 4834 transitions. [2024-11-03 02:02:48,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-03 02:02:48,232 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 23.375) internal successors, (187), 8 states have internal predecessors, (187), 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 196 [2024-11-03 02:02:48,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:02:48,236 INFO L225 Difference]: With dead ends: 3517 [2024-11-03 02:02:48,236 INFO L226 Difference]: Without dead ends: 2018 [2024-11-03 02:02:48,238 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-03 02:02:48,238 INFO L432 NwaCegarLoop]: 219 mSDtfsCounter, 376 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 02:02:48,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 743 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 02:02:48,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2024-11-03 02:02:48,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 1892. [2024-11-03 02:02:48,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1892 states, 1891 states have (on average 1.3516657852987837) internal successors, (2556), 1891 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:48,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 2556 transitions. [2024-11-03 02:02:48,265 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 2556 transitions. Word has length 196 [2024-11-03 02:02:48,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:02:48,266 INFO L471 AbstractCegarLoop]: Abstraction has 1892 states and 2556 transitions. [2024-11-03 02:02:48,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.375) internal successors, (187), 8 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:48,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 2556 transitions. [2024-11-03 02:02:48,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-03 02:02:48,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:02:48,268 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 10, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2024-11-03 02:02:48,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2024-11-03 02:02:48,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:48,469 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:02:48,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:02:48,469 INFO L85 PathProgramCache]: Analyzing trace with hash 228275513, now seen corresponding path program 1 times [2024-11-03 02:02:48,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:02:48,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122678940] [2024-11-03 02:02:48,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:02:48,470 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:48,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:02:48,471 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:02:48,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2024-11-03 02:02:48,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:02:48,577 INFO L255 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:02:48,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:02:48,595 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 463 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-11-03 02:02:48,596 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:02:48,611 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 463 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-11-03 02:02:48,611 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:02:48,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122678940] [2024-11-03 02:02:48,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [122678940] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:02:48,612 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:02:48,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 02:02:48,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514765711] [2024-11-03 02:02:48,612 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:02:48,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 02:02:48,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:02:48,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 02:02:48,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 02:02:48,613 INFO L87 Difference]: Start difference. First operand 1892 states and 2556 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:48,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:02:48,773 INFO L93 Difference]: Finished difference Result 3921 states and 5378 transitions. [2024-11-03 02:02:48,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 02:02:48,774 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 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 221 [2024-11-03 02:02:48,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:02:48,779 INFO L225 Difference]: With dead ends: 3921 [2024-11-03 02:02:48,779 INFO L226 Difference]: Without dead ends: 2088 [2024-11-03 02:02:48,782 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 02:02:48,782 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 77 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 02:02:48,782 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 248 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 02:02:48,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2088 states. [2024-11-03 02:02:48,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2088 to 2088. [2024-11-03 02:02:48,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2088 states, 2087 states have (on average 1.3320555821753715) internal successors, (2780), 2087 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:48,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2088 states to 2088 states and 2780 transitions. [2024-11-03 02:02:48,816 INFO L78 Accepts]: Start accepts. Automaton has 2088 states and 2780 transitions. Word has length 221 [2024-11-03 02:02:48,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:02:48,817 INFO L471 AbstractCegarLoop]: Abstraction has 2088 states and 2780 transitions. [2024-11-03 02:02:48,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:48,817 INFO L276 IsEmpty]: Start isEmpty. Operand 2088 states and 2780 transitions. [2024-11-03 02:02:48,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-11-03 02:02:48,820 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:02:48,820 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 11, 11, 11, 11, 11, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-03 02:02:48,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2024-11-03 02:02:49,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:49,022 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:02:49,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:02:49,023 INFO L85 PathProgramCache]: Analyzing trace with hash 629263864, now seen corresponding path program 1 times [2024-11-03 02:02:49,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:02:49,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211315116] [2024-11-03 02:02:49,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:02:49,023 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:49,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:02:49,025 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:02:49,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2024-11-03 02:02:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:02:49,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:02:49,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:02:49,158 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 479 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2024-11-03 02:02:49,158 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:02:49,173 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 479 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2024-11-03 02:02:49,173 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:02:49,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211315116] [2024-11-03 02:02:49,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1211315116] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:02:49,173 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:02:49,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 02:02:49,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465551226] [2024-11-03 02:02:49,173 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:02:49,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 02:02:49,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:02:49,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 02:02:49,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 02:02:49,175 INFO L87 Difference]: Start difference. First operand 2088 states and 2780 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:49,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:02:49,320 INFO L93 Difference]: Finished difference Result 4334 states and 5868 transitions. [2024-11-03 02:02:49,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 02:02:49,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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 232 [2024-11-03 02:02:49,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:02:49,325 INFO L225 Difference]: With dead ends: 4334 [2024-11-03 02:02:49,325 INFO L226 Difference]: Without dead ends: 2305 [2024-11-03 02:02:49,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 460 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 02:02:49,328 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 84 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 02:02:49,328 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 206 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 02:02:49,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2305 states. [2024-11-03 02:02:49,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2305 to 2305. [2024-11-03 02:02:49,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2305 states, 2304 states have (on average 1.3129340277777777) internal successors, (3025), 2304 states have internal predecessors, (3025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:49,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 3025 transitions. [2024-11-03 02:02:49,363 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 3025 transitions. Word has length 232 [2024-11-03 02:02:49,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:02:49,363 INFO L471 AbstractCegarLoop]: Abstraction has 2305 states and 3025 transitions. [2024-11-03 02:02:49,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:49,363 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 3025 transitions. [2024-11-03 02:02:49,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-11-03 02:02:49,367 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:02:49,368 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 12, 12, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 02:02:49,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2024-11-03 02:02:49,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:49,568 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:02:49,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:02:49,569 INFO L85 PathProgramCache]: Analyzing trace with hash -749493446, now seen corresponding path program 1 times [2024-11-03 02:02:49,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:02:49,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048805389] [2024-11-03 02:02:49,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:02:49,569 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:49,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:02:49,570 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:02:49,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2024-11-03 02:02:49,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:02:49,685 INFO L255 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:02:49,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:02:49,701 INFO L134 CoverageAnalysis]: Checked inductivity of 986 backedges. 565 proven. 0 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2024-11-03 02:02:49,701 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:02:49,714 INFO L134 CoverageAnalysis]: Checked inductivity of 986 backedges. 565 proven. 0 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2024-11-03 02:02:49,715 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:02:49,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048805389] [2024-11-03 02:02:49,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2048805389] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:02:49,715 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:02:49,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 02:02:49,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119376226] [2024-11-03 02:02:49,715 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:02:49,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 02:02:49,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:02:49,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 02:02:49,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 02:02:49,716 INFO L87 Difference]: Start difference. First operand 2305 states and 3025 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:49,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:02:49,885 INFO L93 Difference]: Finished difference Result 4803 states and 6414 transitions. [2024-11-03 02:02:49,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 02:02:49,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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 262 [2024-11-03 02:02:49,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:02:49,891 INFO L225 Difference]: With dead ends: 4803 [2024-11-03 02:02:49,891 INFO L226 Difference]: Without dead ends: 2557 [2024-11-03 02:02:49,893 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 02:02:49,894 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 96 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 02:02:49,894 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 248 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 02:02:49,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2557 states. [2024-11-03 02:02:49,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2557 to 2557. [2024-11-03 02:02:49,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2557 states, 2556 states have (on average 1.2930359937402192) internal successors, (3305), 2556 states have internal predecessors, (3305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:49,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2557 states to 2557 states and 3305 transitions. [2024-11-03 02:02:49,948 INFO L78 Accepts]: Start accepts. Automaton has 2557 states and 3305 transitions. Word has length 262 [2024-11-03 02:02:49,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:02:49,948 INFO L471 AbstractCegarLoop]: Abstraction has 2557 states and 3305 transitions. [2024-11-03 02:02:49,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:49,948 INFO L276 IsEmpty]: Start isEmpty. Operand 2557 states and 3305 transitions. [2024-11-03 02:02:49,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-03 02:02:49,951 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:02:49,952 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 12, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 02:02:49,954 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2024-11-03 02:02:50,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:50,152 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:02:50,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:02:50,154 INFO L85 PathProgramCache]: Analyzing trace with hash -120716101, now seen corresponding path program 1 times [2024-11-03 02:02:50,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:02:50,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021221274] [2024-11-03 02:02:50,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:02:50,154 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:50,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:02:50,155 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:02:50,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2024-11-03 02:02:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:02:50,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:02:50,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:02:50,298 INFO L134 CoverageAnalysis]: Checked inductivity of 998 backedges. 635 proven. 0 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2024-11-03 02:02:50,298 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:02:50,333 INFO L134 CoverageAnalysis]: Checked inductivity of 998 backedges. 635 proven. 0 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2024-11-03 02:02:50,333 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:02:50,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021221274] [2024-11-03 02:02:50,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1021221274] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:02:50,333 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:02:50,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 02:02:50,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653207419] [2024-11-03 02:02:50,334 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:02:50,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 02:02:50,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:02:50,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 02:02:50,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 02:02:50,334 INFO L87 Difference]: Start difference. First operand 2557 states and 3305 transitions. Second operand has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:50,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:02:50,396 INFO L93 Difference]: Finished difference Result 9820 states and 12723 transitions. [2024-11-03 02:02:50,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 02:02:50,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 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 263 [2024-11-03 02:02:50,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:02:50,413 INFO L225 Difference]: With dead ends: 9820 [2024-11-03 02:02:50,413 INFO L226 Difference]: Without dead ends: 7322 [2024-11-03 02:02:50,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 522 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 02:02:50,418 INFO L432 NwaCegarLoop]: 418 mSDtfsCounter, 266 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 02:02:50,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 730 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 02:02:50,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7322 states. [2024-11-03 02:02:50,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7322 to 7318. [2024-11-03 02:02:50,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7318 states, 7317 states have (on average 1.2945196118627853) internal successors, (9472), 7317 states have internal predecessors, (9472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:50,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7318 states to 7318 states and 9472 transitions. [2024-11-03 02:02:50,625 INFO L78 Accepts]: Start accepts. Automaton has 7318 states and 9472 transitions. Word has length 263 [2024-11-03 02:02:50,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:02:50,625 INFO L471 AbstractCegarLoop]: Abstraction has 7318 states and 9472 transitions. [2024-11-03 02:02:50,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:50,629 INFO L276 IsEmpty]: Start isEmpty. Operand 7318 states and 9472 transitions. [2024-11-03 02:02:50,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2024-11-03 02:02:50,637 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:02:50,638 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 13, 13, 13, 11, 11, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 02:02:50,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2024-11-03 02:02:50,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:50,838 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:02:50,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:02:50,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1096027025, now seen corresponding path program 1 times [2024-11-03 02:02:50,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:02:50,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430495158] [2024-11-03 02:02:50,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:02:50,839 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:50,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:02:50,841 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:02:50,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2024-11-03 02:02:50,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:02:50,962 INFO L255 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:02:50,964 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:02:50,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 654 proven. 0 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2024-11-03 02:02:50,980 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:02:50,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 654 proven. 0 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2024-11-03 02:02:50,994 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:02:50,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430495158] [2024-11-03 02:02:50,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [430495158] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:02:50,994 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:02:50,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 02:02:50,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389908631] [2024-11-03 02:02:50,995 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:02:50,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 02:02:50,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:02:50,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 02:02:50,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 02:02:50,996 INFO L87 Difference]: Start difference. First operand 7318 states and 9472 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:51,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:02:51,160 INFO L93 Difference]: Finished difference Result 14808 states and 19266 transitions. [2024-11-03 02:02:51,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 02:02:51,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 287 [2024-11-03 02:02:51,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:02:51,174 INFO L225 Difference]: With dead ends: 14808 [2024-11-03 02:02:51,174 INFO L226 Difference]: Without dead ends: 7549 [2024-11-03 02:02:51,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 570 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 02:02:51,180 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 91 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 02:02:51,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 205 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 02:02:51,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7549 states. [2024-11-03 02:02:51,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7549 to 7549. [2024-11-03 02:02:51,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7549 states, 7548 states have (on average 1.2873608903020668) internal successors, (9717), 7548 states have internal predecessors, (9717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:51,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7549 states to 7549 states and 9717 transitions. [2024-11-03 02:02:51,308 INFO L78 Accepts]: Start accepts. Automaton has 7549 states and 9717 transitions. Word has length 287 [2024-11-03 02:02:51,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:02:51,308 INFO L471 AbstractCegarLoop]: Abstraction has 7549 states and 9717 transitions. [2024-11-03 02:02:51,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:51,309 INFO L276 IsEmpty]: Start isEmpty. Operand 7549 states and 9717 transitions. [2024-11-03 02:02:51,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-03 02:02:51,314 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:02:51,315 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 11, 11, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 02:02:51,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2024-11-03 02:02:51,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:51,515 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:02:51,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:02:51,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1966900500, now seen corresponding path program 1 times [2024-11-03 02:02:51,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:02:51,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722786775] [2024-11-03 02:02:51,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:02:51,516 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:51,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:02:51,517 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:02:51,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2024-11-03 02:02:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:02:51,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:02:51,628 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:02:51,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 667 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2024-11-03 02:02:51,647 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:02:51,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 667 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2024-11-03 02:02:51,665 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:02:51,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722786775] [2024-11-03 02:02:51,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [722786775] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:02:51,665 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:02:51,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 02:02:51,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308562502] [2024-11-03 02:02:51,665 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:02:51,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 02:02:51,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:02:51,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 02:02:51,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 02:02:51,666 INFO L87 Difference]: Start difference. First operand 7549 states and 9717 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:51,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:02:51,893 INFO L93 Difference]: Finished difference Result 15816 states and 20701 transitions. [2024-11-03 02:02:51,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 02:02:51,894 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 299 [2024-11-03 02:02:51,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:02:51,905 INFO L225 Difference]: With dead ends: 15816 [2024-11-03 02:02:51,906 INFO L226 Difference]: Without dead ends: 8326 [2024-11-03 02:02:51,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 596 GetRequests, 594 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 02:02:51,912 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 92 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 02:02:51,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 201 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 02:02:51,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8326 states. [2024-11-03 02:02:52,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8326 to 8326. [2024-11-03 02:02:52,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8326 states, 8325 states have (on average 1.2706306306306305) internal successors, (10578), 8325 states have internal predecessors, (10578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:52,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8326 states to 8326 states and 10578 transitions. [2024-11-03 02:02:52,075 INFO L78 Accepts]: Start accepts. Automaton has 8326 states and 10578 transitions. Word has length 299 [2024-11-03 02:02:52,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:02:52,076 INFO L471 AbstractCegarLoop]: Abstraction has 8326 states and 10578 transitions. [2024-11-03 02:02:52,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:52,076 INFO L276 IsEmpty]: Start isEmpty. Operand 8326 states and 10578 transitions. [2024-11-03 02:02:52,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2024-11-03 02:02:52,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:02:52,082 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 14, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 02:02:52,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2024-11-03 02:02:52,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:52,283 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:02:52,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:02:52,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1281776100, now seen corresponding path program 1 times [2024-11-03 02:02:52,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:02:52,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846600600] [2024-11-03 02:02:52,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:02:52,284 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:52,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:02:52,285 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:02:52,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2024-11-03 02:02:52,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:02:52,407 INFO L255 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:02:52,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:02:52,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1448 backedges. 759 proven. 0 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2024-11-03 02:02:52,427 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:02:52,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1448 backedges. 759 proven. 0 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2024-11-03 02:02:52,442 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:02:52,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846600600] [2024-11-03 02:02:52,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [846600600] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:02:52,442 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:02:52,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 02:02:52,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98739359] [2024-11-03 02:02:52,442 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:02:52,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 02:02:52,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:02:52,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 02:02:52,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 02:02:52,443 INFO L87 Difference]: Start difference. First operand 8326 states and 10578 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:52,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:02:52,660 INFO L93 Difference]: Finished difference Result 17469 states and 22564 transitions. [2024-11-03 02:02:52,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 02:02:52,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 336 [2024-11-03 02:02:52,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:02:52,673 INFO L225 Difference]: With dead ends: 17469 [2024-11-03 02:02:52,674 INFO L226 Difference]: Without dead ends: 9202 [2024-11-03 02:02:52,681 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 668 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 02:02:52,682 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 94 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 02:02:52,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 248 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 02:02:52,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9202 states. [2024-11-03 02:02:52,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9202 to 9181. [2024-11-03 02:02:52,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9181 states, 9180 states have (on average 1.2545751633986928) internal successors, (11517), 9180 states have internal predecessors, (11517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:52,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9181 states to 9181 states and 11517 transitions. [2024-11-03 02:02:52,894 INFO L78 Accepts]: Start accepts. Automaton has 9181 states and 11517 transitions. Word has length 336 [2024-11-03 02:02:52,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:02:52,894 INFO L471 AbstractCegarLoop]: Abstraction has 9181 states and 11517 transitions. [2024-11-03 02:02:52,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:52,894 INFO L276 IsEmpty]: Start isEmpty. Operand 9181 states and 11517 transitions. [2024-11-03 02:02:52,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2024-11-03 02:02:52,901 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:02:52,901 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 13, 13, 11, 11, 9, 9, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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 02:02:52,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2024-11-03 02:02:53,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:53,103 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:02:53,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:02:53,103 INFO L85 PathProgramCache]: Analyzing trace with hash -321729676, now seen corresponding path program 1 times [2024-11-03 02:02:53,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:02:53,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681086712] [2024-11-03 02:02:53,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:02:53,104 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:53,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:02:53,105 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:02:53,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2024-11-03 02:02:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:02:53,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 02:02:53,233 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:02:53,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 905 proven. 10 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2024-11-03 02:02:53,288 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:02:53,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 905 proven. 10 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2024-11-03 02:02:53,338 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:02:53,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681086712] [2024-11-03 02:02:53,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1681086712] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 02:02:53,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 02:02:53,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-11-03 02:02:53,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415382801] [2024-11-03 02:02:53,339 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 02:02:53,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 02:02:53,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:02:53,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 02:02:53,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-03 02:02:53,340 INFO L87 Difference]: Start difference. First operand 9181 states and 11517 transitions. Second operand has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:53,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:02:53,860 INFO L93 Difference]: Finished difference Result 18899 states and 23692 transitions. [2024-11-03 02:02:53,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-03 02:02:53,861 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 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 359 [2024-11-03 02:02:53,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:02:53,869 INFO L225 Difference]: With dead ends: 18899 [2024-11-03 02:02:53,869 INFO L226 Difference]: Without dead ends: 6470 [2024-11-03 02:02:53,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 716 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-11-03 02:02:53,878 INFO L432 NwaCegarLoop]: 285 mSDtfsCounter, 310 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 02:02:53,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 934 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-03 02:02:53,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6470 states. [2024-11-03 02:02:53,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6470 to 6344. [2024-11-03 02:02:53,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6344 states, 6343 states have (on average 1.2528771874507332) internal successors, (7947), 6343 states have internal predecessors, (7947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:53,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6344 states to 6344 states and 7947 transitions. [2024-11-03 02:02:53,978 INFO L78 Accepts]: Start accepts. Automaton has 6344 states and 7947 transitions. Word has length 359 [2024-11-03 02:02:53,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:02:53,978 INFO L471 AbstractCegarLoop]: Abstraction has 6344 states and 7947 transitions. [2024-11-03 02:02:53,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:53,979 INFO L276 IsEmpty]: Start isEmpty. Operand 6344 states and 7947 transitions. [2024-11-03 02:02:53,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2024-11-03 02:02:53,985 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:02:53,986 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 19, 19, 18, 17, 15, 15, 15, 14, 13, 13, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 02:02:53,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2024-11-03 02:02:54,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:54,189 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:02:54,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:02:54,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1213075686, now seen corresponding path program 1 times [2024-11-03 02:02:54,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:02:54,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106349406] [2024-11-03 02:02:54,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:02:54,190 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:54,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:02:54,191 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:02:54,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2024-11-03 02:02:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:02:54,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:02:54,358 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:02:54,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3223 backedges. 1538 proven. 0 refuted. 0 times theorem prover too weak. 1685 trivial. 0 not checked. [2024-11-03 02:02:54,383 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:02:54,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3223 backedges. 1538 proven. 0 refuted. 0 times theorem prover too weak. 1685 trivial. 0 not checked. [2024-11-03 02:02:54,405 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:02:54,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106349406] [2024-11-03 02:02:54,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1106349406] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:02:54,406 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:02:54,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 02:02:54,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457781038] [2024-11-03 02:02:54,406 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:02:54,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 02:02:54,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:02:54,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 02:02:54,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 02:02:54,407 INFO L87 Difference]: Start difference. First operand 6344 states and 7947 transitions. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:54,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:02:54,579 INFO L93 Difference]: Finished difference Result 12961 states and 16465 transitions. [2024-11-03 02:02:54,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 02:02:54,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 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 544 [2024-11-03 02:02:54,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:02:54,588 INFO L225 Difference]: With dead ends: 12961 [2024-11-03 02:02:54,588 INFO L226 Difference]: Without dead ends: 6044 [2024-11-03 02:02:54,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1086 GetRequests, 1084 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 02:02:54,594 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 82 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 02:02:54,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 207 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 02:02:54,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6044 states. [2024-11-03 02:02:54,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6044 to 6044. [2024-11-03 02:02:54,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6044 states, 6043 states have (on average 1.2455733906999835) internal successors, (7527), 6043 states have internal predecessors, (7527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:54,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6044 states to 6044 states and 7527 transitions. [2024-11-03 02:02:54,680 INFO L78 Accepts]: Start accepts. Automaton has 6044 states and 7527 transitions. Word has length 544 [2024-11-03 02:02:54,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:02:54,680 INFO L471 AbstractCegarLoop]: Abstraction has 6044 states and 7527 transitions. [2024-11-03 02:02:54,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:54,680 INFO L276 IsEmpty]: Start isEmpty. Operand 6044 states and 7527 transitions. [2024-11-03 02:02:54,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2024-11-03 02:02:54,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:02:54,688 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 21, 21, 20, 19, 17, 17, 16, 16, 15, 15, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 02:02:54,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2024-11-03 02:02:54,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:54,888 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:02:54,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:02:54,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1723660819, now seen corresponding path program 1 times [2024-11-03 02:02:54,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:02:54,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543826608] [2024-11-03 02:02:54,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:02:54,889 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:54,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:02:54,891 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:02:54,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2024-11-03 02:02:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:02:55,084 INFO L255 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 02:02:55,088 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:02:55,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4151 backedges. 2135 proven. 14 refuted. 0 times theorem prover too weak. 2002 trivial. 0 not checked. [2024-11-03 02:02:55,150 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:02:55,213 INFO L134 CoverageAnalysis]: Checked inductivity of 4151 backedges. 2135 proven. 14 refuted. 0 times theorem prover too weak. 2002 trivial. 0 not checked. [2024-11-03 02:02:55,213 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:02:55,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543826608] [2024-11-03 02:02:55,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [543826608] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 02:02:55,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 02:02:55,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-11-03 02:02:55,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071469243] [2024-11-03 02:02:55,214 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 02:02:55,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 02:02:55,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:02:55,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 02:02:55,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-03 02:02:55,215 INFO L87 Difference]: Start difference. First operand 6044 states and 7527 transitions. Second operand has 6 states, 6 states have (on average 45.5) internal successors, (273), 6 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:55,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:02:55,366 INFO L93 Difference]: Finished difference Result 6257 states and 7797 transitions. [2024-11-03 02:02:55,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 02:02:55,367 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 45.5) internal successors, (273), 6 states have internal predecessors, (273), 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 619 [2024-11-03 02:02:55,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:02:55,368 INFO L225 Difference]: With dead ends: 6257 [2024-11-03 02:02:55,368 INFO L226 Difference]: Without dead ends: 0 [2024-11-03 02:02:55,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1240 GetRequests, 1234 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-03 02:02:55,373 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 108 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 02:02:55,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 225 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 02:02:55,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-03 02:02:55,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-03 02:02:55,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:55,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-03 02:02:55,374 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 619 [2024-11-03 02:02:55,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:02:55,374 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-03 02:02:55,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 45.5) internal successors, (273), 6 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:02:55,374 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-03 02:02:55,374 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-03 02:02:55,377 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-03 02:02:55,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2024-11-03 02:02:55,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:55,580 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, 1, 1] [2024-11-03 02:02:55,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-03 02:02:57,549 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-03 02:02:57,564 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:02:57 BoogieIcfgContainer [2024-11-03 02:02:57,564 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-03 02:02:57,565 INFO L158 Benchmark]: Toolchain (without parser) took 17307.23ms. Allocated memory was 203.4MB in the beginning and 604.0MB in the end (delta: 400.6MB). Free memory was 151.4MB in the beginning and 381.3MB in the end (delta: -229.9MB). Peak memory consumption was 386.9MB. Max. memory is 8.0GB. [2024-11-03 02:02:57,565 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 203.4MB. Free memory is still 150.1MB. There was no memory consumed. Max. memory is 8.0GB. [2024-11-03 02:02:57,565 INFO L158 Benchmark]: CACSL2BoogieTranslator took 268.70ms. Allocated memory is still 203.4MB. Free memory was 150.9MB in the beginning and 133.5MB in the end (delta: 17.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2024-11-03 02:02:57,565 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.19ms. Allocated memory is still 203.4MB. Free memory was 133.5MB in the beginning and 131.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-11-03 02:02:57,565 INFO L158 Benchmark]: Boogie Preprocessor took 43.25ms. Allocated memory is still 203.4MB. Free memory was 131.0MB in the beginning and 127.8MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2024-11-03 02:02:57,565 INFO L158 Benchmark]: RCFGBuilder took 574.93ms. Allocated memory is still 203.4MB. Free memory was 127.8MB in the beginning and 90.6MB in the end (delta: 37.2MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. [2024-11-03 02:02:57,565 INFO L158 Benchmark]: TraceAbstraction took 16382.64ms. Allocated memory was 203.4MB in the beginning and 604.0MB in the end (delta: 400.6MB). Free memory was 90.1MB in the beginning and 381.3MB in the end (delta: -291.2MB). Peak memory consumption was 326.1MB. Max. memory is 8.0GB. [2024-11-03 02:02:57,566 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 203.4MB. Free memory is still 150.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 268.70ms. Allocated memory is still 203.4MB. Free memory was 150.9MB in the beginning and 133.5MB in the end (delta: 17.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.19ms. Allocated memory is still 203.4MB. Free memory was 133.5MB in the beginning and 131.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 43.25ms. Allocated memory is still 203.4MB. Free memory was 131.0MB in the beginning and 127.8MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 574.93ms. Allocated memory is still 203.4MB. Free memory was 127.8MB in the beginning and 90.6MB in the end (delta: 37.2MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. * TraceAbstraction took 16382.64ms. Allocated memory was 203.4MB in the beginning and 604.0MB in the end (delta: 400.6MB). Free memory was 90.1MB in the beginning and 381.3MB in the end (delta: -291.2MB). Peak memory consumption was 326.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 618]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 125 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 14.3s, OverallIterations: 24, TraceHistogramMax: 22, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2495 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2495 mSDsluCounter, 8428 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4111 mSDsCounter, 540 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3952 IncrementalHoareTripleChecker+Invalid, 4492 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 540 mSolverCounterUnsat, 4317 mSDtfsCounter, 3952 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9948 GetRequests, 9893 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9181occurred in iteration=21, InterpolantAutomatonStates: 98, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 24 MinimizatonAttempts, 281 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 4989 NumberOfCodeBlocks, 4989 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 9930 ConstructedInterpolants, 0 QuantifiedInterpolants, 12884 SizeOfPredicates, 4 NumberOfNonLiveVariables, 6036 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 48 InterpolantComputations, 42 PerfectInterpolantSequences, 38442/38546 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 103]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((((61087 == ag_Y) && (256 == s__s3__tmp__new_cipher__algorithms)) && (5 != blastFlag)) && (65535 == ag_X)) && (0 == s__hit)) && (4480 == s__state)) || ((((((((((((61087 == ag_Y) && (65535 == ag_X)) && (16384 != s__state)) && (4560 == s__s3__tmp__next_state___0)) && (4368 != s__state)) && (4099 != s__state)) && (4096 != s__state)) && (2 == blastFlag)) && (0 == s__hit)) && (12292 != s__state)) && (20480 != s__state)) && (4369 != s__state))) || ((((61087 == ag_Y) && (65535 == ag_X)) && (4512 == s__state)) && (2 == blastFlag))) || ((((((61087 == ag_Y) && (256 == s__s3__tmp__new_cipher__algorithms)) && (5 != blastFlag)) && (65535 == ag_X)) && (0 == s__hit)) && (4496 == s__state))) || ((((61087 == ag_Y) && (65535 == ag_X)) && (4528 == s__state)) && (2 == blastFlag))) || (((((61087 == ag_Y) && (65535 == ag_X)) && (2 == blastFlag)) && (0 == s__hit)) && (4464 == s__state))) || (((4512 == s__state) && (2 == blastFlag)) && (0 != s__hit))) || (((((61087 == ag_Y) && (65535 == ag_X)) && (2 == blastFlag)) && (0 == s__hit)) && (4480 == s__state))) || (((4560 == s__state) && (2 == blastFlag)) && (0 != s__hit))) || ((((2 == blastFlag) && (0 != s__hit)) && (4352 == s__state)) && (3 == s__s3__tmp__next_state___0))) || ((((((4448 == s__state) && (61087 == ag_Y)) && (256 == s__s3__tmp__new_cipher__algorithms)) && (5 != blastFlag)) && (65535 == ag_X)) && (0 == s__hit))) || (((((4448 == s__state) && (61087 == ag_Y)) && (65535 == ag_X)) && (2 == blastFlag)) && (0 == s__hit))) || (((4400 == s__state) && (2 == blastFlag)) && (0 == s__hit))) || (((((61087 == ag_Y) && (256 == s__s3__tmp__new_cipher__algorithms)) && (5 != blastFlag)) && (0 == s__hit)) && (4416 == s__state))) || ((4384 == s__state) && (1 == blastFlag))) || (((((61087 == ag_Y) && (65535 == ag_X)) && (2 == blastFlag)) && (0 == s__hit)) && (4496 == s__state))) || ((0 == blastFlag) && (12292 == s__state))) || ((((2 == blastFlag) && (0 != s__hit)) && (3 == s__state)) && (4368 != s__s3__tmp__next_state___0))) || ((((((61087 == ag_Y) && (256 == s__s3__tmp__new_cipher__algorithms)) && (5 != blastFlag)) && (65535 == ag_X)) && (0 == s__hit)) && (4464 == s__state))) || (((((4432 == s__state) && (61087 == ag_Y)) && (65535 == ag_X)) && (2 == blastFlag)) && (0 == s__hit))) || (((((((((((((61087 == ag_Y) && (256 == s__s3__tmp__new_cipher__algorithms)) && (5 != blastFlag)) && (65535 == ag_X)) && (16384 != s__state)) && (4560 == s__s3__tmp__next_state___0)) && (4368 != s__state)) && (4099 != s__state)) && (4096 != s__state)) && (0 == s__hit)) && (12292 != s__state)) && (20480 != s__state)) && (4369 != s__state))) || (((4528 == s__state) && (2 == blastFlag)) && (0 != s__hit))) || ((((((4432 == s__state) && (61087 == ag_Y)) && (256 == s__s3__tmp__new_cipher__algorithms)) && (5 != blastFlag)) && (65535 == ag_X)) && (0 == s__hit))) || ((((61087 == ag_Y) && (2 == blastFlag)) && (0 == s__hit)) && (4416 == s__state))) || ((4368 == s__state) && (0 == blastFlag))) || ((((((61087 == ag_Y) && (256 == s__s3__tmp__new_cipher__algorithms)) && (65535 == ag_X)) && (0 != s__hit)) && (3 == s__state)) && (4368 != s__s3__tmp__next_state___0))) || ((((((61087 == ag_Y) && (256 == s__s3__tmp__new_cipher__algorithms)) && (5 != blastFlag)) && (65535 == ag_X)) && (4512 == s__state)) && (0 == s__hit))) || ((((((61087 == ag_Y) && (256 == s__s3__tmp__new_cipher__algorithms)) && (5 != blastFlag)) && (65535 == ag_X)) && (4528 == s__state)) && (0 == s__hit))) RESULT: Ultimate proved your program to be correct! [2024-11-03 02:02:57,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...