/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_3.BV.c.cil-1a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 02:02:58,021 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 02:02:58,095 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 02:02:58,103 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 02:02:58,103 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 02:02:58,137 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 02:02:58,137 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 02:02:58,138 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 02:02:58,138 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 02:02:58,139 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 02:02:58,139 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 02:02:58,139 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 02:02:58,140 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 02:02:58,140 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 02:02:58,142 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 02:02:58,142 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 02:02:58,143 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 02:02:58,143 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 02:02:58,144 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 02:02:58,144 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 02:02:58,144 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 02:02:58,148 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 02:02:58,149 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 02:02:58,149 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 02:02:58,149 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 02:02:58,149 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 02:02:58,150 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 02:02:58,150 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 02:02:58,150 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 02:02:58,150 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 02:02:58,150 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 02:02:58,151 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 02:02:58,151 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 02:02:58,151 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 02:02:58,151 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 02:02:58,151 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 02:02:58,152 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 02:02:58,152 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 02:02:58,152 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 02:02:58,153 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:58,153 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 02:02:58,153 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 02:02:58,154 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 02:02:58,154 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 02:02:58,154 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-03 02:02:58,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 02:02:58,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 02:02:58,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 02:02:58,406 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 02:02:58,407 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 02:02:58,408 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/s3_clnt_3.BV.c.cil-1a.c [2024-11-03 02:02:59,821 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 02:03:00,032 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 02:03:00,034 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/s3_clnt_3.BV.c.cil-1a.c [2024-11-03 02:03:00,048 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be4b0894e/7689d6a5fcea4e3582b18e83c0b2531c/FLAGb93c8492e [2024-11-03 02:03:00,066 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be4b0894e/7689d6a5fcea4e3582b18e83c0b2531c [2024-11-03 02:03:00,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 02:03:00,071 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 02:03:00,073 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 02:03:00,074 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 02:03:00,079 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 02:03:00,079 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:03:00" (1/1) ... [2024-11-03 02:03:00,080 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2151f4c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:00, skipping insertion in model container [2024-11-03 02:03:00,080 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:03:00" (1/1) ... [2024-11-03 02:03:00,126 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 02:03:00,358 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_3.BV.c.cil-1a.c[37883,37896] [2024-11-03 02:03:00,373 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 02:03:00,385 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 02:03:00,431 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_3.BV.c.cil-1a.c[37883,37896] [2024-11-03 02:03:00,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 02:03:00,456 INFO L204 MainTranslator]: Completed translation [2024-11-03 02:03:00,457 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:00 WrapperNode [2024-11-03 02:03:00,457 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 02:03:00,459 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 02:03:00,459 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 02:03:00,459 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 02:03:00,465 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:00" (1/1) ... [2024-11-03 02:03:00,475 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:00" (1/1) ... [2024-11-03 02:03:00,509 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 474 [2024-11-03 02:03:00,510 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 02:03:00,511 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 02:03:00,511 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 02:03:00,511 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 02:03:00,522 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:00" (1/1) ... [2024-11-03 02:03:00,522 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:00" (1/1) ... [2024-11-03 02:03:00,534 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:00" (1/1) ... [2024-11-03 02:03:00,562 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 02:03:00,563 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:00" (1/1) ... [2024-11-03 02:03:00,563 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:00" (1/1) ... [2024-11-03 02:03:00,580 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:00" (1/1) ... [2024-11-03 02:03:00,589 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:00" (1/1) ... [2024-11-03 02:03:00,593 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:00" (1/1) ... [2024-11-03 02:03:00,595 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:00" (1/1) ... [2024-11-03 02:03:00,607 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 02:03:00,608 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 02:03:00,608 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 02:03:00,609 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 02:03:00,609 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:00" (1/1) ... [2024-11-03 02:03:00,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 02:03:00,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 02:03:00,641 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 02:03:00,644 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 02:03:00,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 02:03:00,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 02:03:00,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 02:03:00,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 02:03:00,777 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 02:03:00,779 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 02:03:00,802 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-03 02:03:01,320 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2024-11-03 02:03:01,320 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2024-11-03 02:03:01,372 INFO L? ?]: Removed 116 outVars from TransFormulas that were not future-live. [2024-11-03 02:03:01,372 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 02:03:01,385 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 02:03:01,386 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 02:03:01,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:03:01 BoogieIcfgContainer [2024-11-03 02:03:01,386 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 02:03:01,388 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 02:03:01,388 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 02:03:01,391 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 02:03:01,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:03:00" (1/3) ... [2024-11-03 02:03:01,392 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c7cd77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:03:01, skipping insertion in model container [2024-11-03 02:03:01,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:00" (2/3) ... [2024-11-03 02:03:01,393 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c7cd77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:03:01, skipping insertion in model container [2024-11-03 02:03:01,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:03:01" (3/3) ... [2024-11-03 02:03:01,394 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-1a.c [2024-11-03 02:03:01,410 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 02:03:01,410 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 02:03:01,463 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 02:03:01,469 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;@75b4c0c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 02:03:01,470 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 02:03:01,476 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 124 states have (on average 1.7338709677419355) internal successors, (215), 125 states have internal predecessors, (215), 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 02:03:01,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-03 02:03:01,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:03:01,485 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, 1] [2024-11-03 02:03:01,485 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:03:01,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:03:01,490 INFO L85 PathProgramCache]: Analyzing trace with hash 259999105, now seen corresponding path program 1 times [2024-11-03 02:03:01,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:03:01,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932055406] [2024-11-03 02:03:01,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:03:01,498 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:03:01,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:03:01,501 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 02:03:01,503 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 02:03:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:03:01,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:03:01,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:03:01,656 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 02:03:01,656 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:03:01,683 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 02:03:01,684 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:03:01,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932055406] [2024-11-03 02:03:01,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1932055406] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:03:01,687 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:03:01,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 02:03:01,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108542991] [2024-11-03 02:03:01,689 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:03:01,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 02:03:01,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:03:01,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 02:03:01,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 02:03:01,723 INFO L87 Difference]: Start difference. First operand has 126 states, 124 states have (on average 1.7338709677419355) internal successors, (215), 125 states have internal predecessors, (215), 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 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:03:01,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:03:01,917 INFO L93 Difference]: Finished difference Result 247 states and 423 transitions. [2024-11-03 02:03:01,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 02:03:01,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-03 02:03:01,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:03:01,930 INFO L225 Difference]: With dead ends: 247 [2024-11-03 02:03:01,930 INFO L226 Difference]: Without dead ends: 113 [2024-11-03 02:03:01,935 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 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 02:03:01,940 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 7 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 02:03:01,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 320 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 02:03:01,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-03 02:03:01,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2024-11-03 02:03:01,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.5267857142857142) internal successors, (171), 112 states have internal predecessors, (171), 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 02:03:01,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 171 transitions. [2024-11-03 02:03:01,990 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 171 transitions. Word has length 25 [2024-11-03 02:03:01,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:03:01,990 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 171 transitions. [2024-11-03 02:03:01,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:03:01,991 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 171 transitions. [2024-11-03 02:03:01,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-03 02:03:01,992 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:03:01,994 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, 1] [2024-11-03 02:03:01,999 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 02:03:02,194 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 02:03:02,195 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:03:02,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:03:02,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1138040513, now seen corresponding path program 1 times [2024-11-03 02:03:02,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:03:02,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965051773] [2024-11-03 02:03:02,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:03:02,197 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:03:02,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:03:02,198 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 02:03:02,199 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 02:03:02,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:03:02,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:03:02,286 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:03:02,330 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 02:03:02,330 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:03:02,358 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 02:03:02,358 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:03:02,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965051773] [2024-11-03 02:03:02,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1965051773] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:03:02,359 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:03:02,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 02:03:02,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123684312] [2024-11-03 02:03:02,359 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:03:02,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 02:03:02,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:03:02,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 02:03:02,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 02:03:02,364 INFO L87 Difference]: Start difference. First operand 113 states and 171 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:03:02,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:03:02,504 INFO L93 Difference]: Finished difference Result 230 states and 352 transitions. [2024-11-03 02:03:02,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 02:03:02,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-03 02:03:02,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:03:02,506 INFO L225 Difference]: With dead ends: 230 [2024-11-03 02:03:02,506 INFO L226 Difference]: Without dead ends: 128 [2024-11-03 02:03:02,507 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 71 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 02:03:02,508 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 9 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 02:03:02,508 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 242 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 02:03:02,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-03 02:03:02,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2024-11-03 02:03:02,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.5039370078740157) internal successors, (191), 127 states have internal predecessors, (191), 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 02:03:02,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 191 transitions. [2024-11-03 02:03:02,525 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 191 transitions. Word has length 37 [2024-11-03 02:03:02,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:03:02,526 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 191 transitions. [2024-11-03 02:03:02,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:03:02,526 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 191 transitions. [2024-11-03 02:03:02,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-03 02:03:02,531 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:03:02,531 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, 1] [2024-11-03 02:03:02,536 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 02:03:02,731 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 02:03:02,732 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:03:02,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:03:02,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1126420040, now seen corresponding path program 1 times [2024-11-03 02:03:02,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:03:02,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283197872] [2024-11-03 02:03:02,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:03:02,734 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:03:02,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:03:02,736 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 02:03:02,738 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 02:03:02,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:03:02,833 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:03:02,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:03:02,895 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 02:03:02,895 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:03:02,961 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 02:03:02,961 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:03:02,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283197872] [2024-11-03 02:03:02,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1283197872] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:03:02,962 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:03:02,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 02:03:02,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644116973] [2024-11-03 02:03:02,962 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:03:02,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 02:03:02,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:03:02,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 02:03:02,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 02:03:02,965 INFO L87 Difference]: Start difference. First operand 128 states and 191 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 02:03:02,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:03:02,989 INFO L93 Difference]: Finished difference Result 271 states and 400 transitions. [2024-11-03 02:03:02,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 02:03:02,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 51 [2024-11-03 02:03:02,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:03:02,992 INFO L225 Difference]: With dead ends: 271 [2024-11-03 02:03:02,992 INFO L226 Difference]: Without dead ends: 154 [2024-11-03 02:03:02,993 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 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 02:03:02,994 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 21 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 311 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 02:03:02,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 311 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 02:03:02,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-03 02:03:03,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2024-11-03 02:03:03,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.4640522875816993) internal successors, (224), 153 states have internal predecessors, (224), 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 02:03:03,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 224 transitions. [2024-11-03 02:03:03,011 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 224 transitions. Word has length 51 [2024-11-03 02:03:03,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:03:03,011 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 224 transitions. [2024-11-03 02:03:03,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 02:03:03,011 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 224 transitions. [2024-11-03 02:03:03,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-03 02:03:03,013 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:03:03,013 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, 1] [2024-11-03 02:03:03,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2024-11-03 02:03:03,213 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 02:03:03,214 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:03:03,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:03:03,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1260433546, now seen corresponding path program 1 times [2024-11-03 02:03:03,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:03:03,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81211992] [2024-11-03 02:03:03,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:03:03,215 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:03:03,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:03:03,218 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 02:03:03,219 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 02:03:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:03:03,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:03:03,312 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:03:03,342 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 02:03:03,342 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:03:03,368 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 02:03:03,368 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:03:03,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81211992] [2024-11-03 02:03:03,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [81211992] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:03:03,369 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:03:03,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 02:03:03,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200903191] [2024-11-03 02:03:03,369 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:03:03,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 02:03:03,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:03:03,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 02:03:03,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 02:03:03,372 INFO L87 Difference]: Start difference. First operand 154 states and 224 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 02:03:03,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:03:03,505 INFO L93 Difference]: Finished difference Result 288 states and 429 transitions. [2024-11-03 02:03:03,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 02:03:03,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 51 [2024-11-03 02:03:03,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:03:03,507 INFO L225 Difference]: With dead ends: 288 [2024-11-03 02:03:03,507 INFO L226 Difference]: Without dead ends: 171 [2024-11-03 02:03:03,508 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 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 02:03:03,509 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 10 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 02:03:03,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 255 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 02:03:03,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-03 02:03:03,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2024-11-03 02:03:03,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.4470588235294117) internal successors, (246), 170 states have internal predecessors, (246), 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 02:03:03,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 246 transitions. [2024-11-03 02:03:03,523 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 246 transitions. Word has length 51 [2024-11-03 02:03:03,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:03:03,523 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 246 transitions. [2024-11-03 02:03:03,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 02:03:03,524 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 246 transitions. [2024-11-03 02:03:03,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-03 02:03:03,525 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:03:03,525 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 02:03:03,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2024-11-03 02:03:03,726 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 02:03:03,726 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:03:03,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:03:03,727 INFO L85 PathProgramCache]: Analyzing trace with hash -457628469, now seen corresponding path program 1 times [2024-11-03 02:03:03,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:03:03,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800838259] [2024-11-03 02:03:03,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:03:03,728 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:03:03,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:03:03,731 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 02:03:03,733 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 02:03:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:03:03,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:03:03,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:03:03,888 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 02:03:03,889 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:03:03,941 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 02:03:03,942 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:03:03,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800838259] [2024-11-03 02:03:03,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1800838259] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:03:03,943 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:03:03,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 02:03:03,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723486501] [2024-11-03 02:03:03,943 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:03:03,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 02:03:03,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:03:03,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 02:03:03,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 02:03:03,946 INFO L87 Difference]: Start difference. First operand 171 states and 246 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 02:03:04,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:03:04,004 INFO L93 Difference]: Finished difference Result 567 states and 833 transitions. [2024-11-03 02:03:04,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 02:03:04,005 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 02:03:04,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:03:04,009 INFO L225 Difference]: With dead ends: 567 [2024-11-03 02:03:04,009 INFO L226 Difference]: Without dead ends: 433 [2024-11-03 02:03:04,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 132 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 02:03:04,011 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 353 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 02:03:04,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 495 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 02:03:04,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2024-11-03 02:03:04,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2024-11-03 02:03:04,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 432 states have (on average 1.4560185185185186) internal successors, (629), 432 states have internal predecessors, (629), 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 02:03:04,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 629 transitions. [2024-11-03 02:03:04,047 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 629 transitions. Word has length 68 [2024-11-03 02:03:04,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:03:04,047 INFO L471 AbstractCegarLoop]: Abstraction has 433 states and 629 transitions. [2024-11-03 02:03:04,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 02:03:04,047 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 629 transitions. [2024-11-03 02:03:04,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-03 02:03:04,051 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:03:04,052 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, 1] [2024-11-03 02:03:04,060 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 02:03:04,252 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 02:03:04,253 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:03:04,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:03:04,253 INFO L85 PathProgramCache]: Analyzing trace with hash 562572643, now seen corresponding path program 1 times [2024-11-03 02:03:04,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:03:04,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145032319] [2024-11-03 02:03:04,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:03:04,254 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:03:04,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:03:04,256 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 02:03:04,258 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 02:03:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:03:04,352 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:03:04,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:03:04,395 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-03 02:03:04,396 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:03:04,453 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-03 02:03:04,454 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:03:04,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145032319] [2024-11-03 02:03:04,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2145032319] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:03:04,454 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:03:04,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 02:03:04,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689072134] [2024-11-03 02:03:04,454 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:03:04,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 02:03:04,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:03:04,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 02:03:04,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 02:03:04,456 INFO L87 Difference]: Start difference. First operand 433 states and 629 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 02:03:04,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:03:04,480 INFO L93 Difference]: Finished difference Result 850 states and 1237 transitions. [2024-11-03 02:03:04,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 02:03:04,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 69 [2024-11-03 02:03:04,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:03:04,483 INFO L225 Difference]: With dead ends: 850 [2024-11-03 02:03:04,483 INFO L226 Difference]: Without dead ends: 454 [2024-11-03 02:03:04,486 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 135 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 02:03:04,487 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 11 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 341 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 02:03:04,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 341 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 02:03:04,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2024-11-03 02:03:04,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 454. [2024-11-03 02:03:04,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 453 states have (on average 1.4481236203090508) internal successors, (656), 453 states have internal predecessors, (656), 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 02:03:04,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 656 transitions. [2024-11-03 02:03:04,504 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 656 transitions. Word has length 69 [2024-11-03 02:03:04,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:03:04,504 INFO L471 AbstractCegarLoop]: Abstraction has 454 states and 656 transitions. [2024-11-03 02:03:04,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 02:03:04,505 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 656 transitions. [2024-11-03 02:03:04,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-03 02:03:04,506 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:03:04,506 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 02:03:04,510 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 02:03:04,707 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 02:03:04,707 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:03:04,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:03:04,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1304795004, now seen corresponding path program 1 times [2024-11-03 02:03:04,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:03:04,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312622326] [2024-11-03 02:03:04,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:03:04,708 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:03:04,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:03:04,709 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 02:03:04,710 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 02:03:04,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:03:04,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:03:04,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:03:04,866 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-03 02:03:04,866 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:03:04,904 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-03 02:03:04,904 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:03:04,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312622326] [2024-11-03 02:03:04,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1312622326] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:03:04,904 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:03:04,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 02:03:04,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701564745] [2024-11-03 02:03:04,905 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:03:04,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 02:03:04,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:03:04,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 02:03:04,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 02:03:04,907 INFO L87 Difference]: Start difference. First operand 454 states and 656 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 02:03:04,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:03:04,967 INFO L93 Difference]: Finished difference Result 1130 states and 1647 transitions. [2024-11-03 02:03:04,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 02:03:04,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 104 [2024-11-03 02:03:04,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:03:04,972 INFO L225 Difference]: With dead ends: 1130 [2024-11-03 02:03:04,972 INFO L226 Difference]: Without dead ends: 713 [2024-11-03 02:03:04,972 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 204 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 02:03:04,973 INFO L432 NwaCegarLoop]: 296 mSDtfsCounter, 272 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 02:03:04,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 592 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 02:03:04,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2024-11-03 02:03:04,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2024-11-03 02:03:04,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 712 states have (on average 1.4508426966292134) internal successors, (1033), 712 states have internal predecessors, (1033), 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 02:03:04,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1033 transitions. [2024-11-03 02:03:04,994 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1033 transitions. Word has length 104 [2024-11-03 02:03:04,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:03:04,994 INFO L471 AbstractCegarLoop]: Abstraction has 713 states and 1033 transitions. [2024-11-03 02:03:04,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 02:03:04,994 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1033 transitions. [2024-11-03 02:03:04,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-03 02:03:04,996 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:03:04,996 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 02:03:05,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2024-11-03 02:03:05,199 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 02:03:05,199 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:03:05,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:03:05,200 INFO L85 PathProgramCache]: Analyzing trace with hash -833396868, now seen corresponding path program 1 times [2024-11-03 02:03:05,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:03:05,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220637901] [2024-11-03 02:03:05,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:03:05,200 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:03:05,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:03:05,201 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 02:03:05,203 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 02:03:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:03:05,308 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:03:05,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:03:05,337 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-03 02:03:05,337 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:03:05,373 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-03 02:03:05,374 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:03:05,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220637901] [2024-11-03 02:03:05,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1220637901] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:03:05,374 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:03:05,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 02:03:05,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993860039] [2024-11-03 02:03:05,374 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:03:05,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 02:03:05,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:03:05,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 02:03:05,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 02:03:05,376 INFO L87 Difference]: Start difference. First operand 713 states and 1033 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 02:03:05,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:03:05,576 INFO L93 Difference]: Finished difference Result 1566 states and 2335 transitions. [2024-11-03 02:03:05,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 02:03:05,577 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 124 [2024-11-03 02:03:05,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:03:05,581 INFO L225 Difference]: With dead ends: 1566 [2024-11-03 02:03:05,581 INFO L226 Difference]: Without dead ends: 890 [2024-11-03 02:03:05,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 244 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 02:03:05,584 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 69 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 02:03:05,585 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 260 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 02:03:05,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2024-11-03 02:03:05,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 890. [2024-11-03 02:03:05,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 889 states have (on average 1.4510686164229472) internal successors, (1290), 889 states have internal predecessors, (1290), 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 02:03:05,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1290 transitions. [2024-11-03 02:03:05,613 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1290 transitions. Word has length 124 [2024-11-03 02:03:05,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:03:05,616 INFO L471 AbstractCegarLoop]: Abstraction has 890 states and 1290 transitions. [2024-11-03 02:03:05,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 02:03:05,616 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1290 transitions. [2024-11-03 02:03:05,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-03 02:03:05,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:03:05,618 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 4, 3, 3, 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 02:03:05,622 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 02:03:05,820 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 02:03:05,821 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:03:05,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:03:05,821 INFO L85 PathProgramCache]: Analyzing trace with hash 865265025, now seen corresponding path program 1 times [2024-11-03 02:03:05,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:03:05,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776593008] [2024-11-03 02:03:05,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:03:05,822 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:03:05,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:03:05,823 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 02:03:05,824 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 02:03:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:03:05,932 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:03:05,935 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:03:05,960 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-03 02:03:05,960 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:03:05,991 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-03 02:03:05,992 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:03:05,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776593008] [2024-11-03 02:03:05,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [776593008] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:03:05,992 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:03:05,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 02:03:05,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199899201] [2024-11-03 02:03:05,992 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:03:05,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 02:03:05,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:03:05,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 02:03:05,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 02:03:05,993 INFO L87 Difference]: Start difference. First operand 890 states and 1290 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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 02:03:06,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:03:06,195 INFO L93 Difference]: Finished difference Result 1848 states and 2721 transitions. [2024-11-03 02:03:06,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 02:03:06,196 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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 146 [2024-11-03 02:03:06,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:03:06,200 INFO L225 Difference]: With dead ends: 1848 [2024-11-03 02:03:06,200 INFO L226 Difference]: Without dead ends: 995 [2024-11-03 02:03:06,201 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 288 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 02:03:06,202 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 72 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 02:03:06,202 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 258 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 02:03:06,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2024-11-03 02:03:06,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 995. [2024-11-03 02:03:06,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 994 states have (on average 1.4235412474849094) internal successors, (1415), 994 states have internal predecessors, (1415), 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 02:03:06,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1415 transitions. [2024-11-03 02:03:06,230 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1415 transitions. Word has length 146 [2024-11-03 02:03:06,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:03:06,230 INFO L471 AbstractCegarLoop]: Abstraction has 995 states and 1415 transitions. [2024-11-03 02:03:06,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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 02:03:06,230 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1415 transitions. [2024-11-03 02:03:06,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-03 02:03:06,233 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:03:06,233 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 7, 7, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 02:03:06,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2024-11-03 02:03:06,433 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 02:03:06,434 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:03:06,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:03:06,434 INFO L85 PathProgramCache]: Analyzing trace with hash -918464004, now seen corresponding path program 1 times [2024-11-03 02:03:06,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:03:06,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452287870] [2024-11-03 02:03:06,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:03:06,435 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:03:06,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:03:06,437 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 02:03:06,438 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 02:03:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:03:06,563 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:03:06,566 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:03:06,608 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-03 02:03:06,609 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:03:06,631 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-03 02:03:06,632 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:03:06,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1452287870] [2024-11-03 02:03:06,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1452287870] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:03:06,632 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:03:06,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 02:03:06,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821638940] [2024-11-03 02:03:06,632 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:03:06,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 02:03:06,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:03:06,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 02:03:06,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 02:03:06,634 INFO L87 Difference]: Start difference. First operand 995 states and 1415 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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 02:03:06,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:03:06,822 INFO L93 Difference]: Finished difference Result 2093 states and 3026 transitions. [2024-11-03 02:03:06,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 02:03:06,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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 183 [2024-11-03 02:03:06,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:03:06,827 INFO L225 Difference]: With dead ends: 2093 [2024-11-03 02:03:06,827 INFO L226 Difference]: Without dead ends: 1135 [2024-11-03 02:03:06,829 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 362 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 02:03:06,830 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 80 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 02:03:06,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 227 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 02:03:06,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2024-11-03 02:03:06,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 1135. [2024-11-03 02:03:06,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1134 states have (on average 1.3888888888888888) internal successors, (1575), 1134 states have internal predecessors, (1575), 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 02:03:06,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 1575 transitions. [2024-11-03 02:03:06,858 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 1575 transitions. Word has length 183 [2024-11-03 02:03:06,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:03:06,859 INFO L471 AbstractCegarLoop]: Abstraction has 1135 states and 1575 transitions. [2024-11-03 02:03:06,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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 02:03:06,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 1575 transitions. [2024-11-03 02:03:06,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-03 02:03:06,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:03:06,862 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 8, 7, 5, 5, 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] [2024-11-03 02:03:06,865 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2024-11-03 02:03:07,062 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 02:03:07,063 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:03:07,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:03:07,064 INFO L85 PathProgramCache]: Analyzing trace with hash 301652121, now seen corresponding path program 1 times [2024-11-03 02:03:07,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:03:07,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946044436] [2024-11-03 02:03:07,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:03:07,064 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:03:07,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:03:07,067 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 02:03:07,068 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 02:03:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:03:07,199 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:03:07,201 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:03:07,233 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-03 02:03:07,233 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:03:07,259 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-03 02:03:07,259 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:03:07,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946044436] [2024-11-03 02:03:07,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1946044436] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:03:07,260 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:03:07,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 02:03:07,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443387627] [2024-11-03 02:03:07,260 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:03:07,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 02:03:07,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:03:07,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 02:03:07,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 02:03:07,262 INFO L87 Difference]: Start difference. First operand 1135 states and 1575 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 02:03:07,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:03:07,461 INFO L93 Difference]: Finished difference Result 2388 states and 3376 transitions. [2024-11-03 02:03:07,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 02:03:07,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 184 [2024-11-03 02:03:07,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:03:07,467 INFO L225 Difference]: With dead ends: 2388 [2024-11-03 02:03:07,468 INFO L226 Difference]: Without dead ends: 1290 [2024-11-03 02:03:07,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 364 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 02:03:07,470 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 82 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 02:03:07,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 211 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 02:03:07,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2024-11-03 02:03:07,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1290. [2024-11-03 02:03:07,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1289 states have (on average 1.3576415826221877) internal successors, (1750), 1289 states have internal predecessors, (1750), 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 02:03:07,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 1750 transitions. [2024-11-03 02:03:07,504 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 1750 transitions. Word has length 184 [2024-11-03 02:03:07,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:03:07,504 INFO L471 AbstractCegarLoop]: Abstraction has 1290 states and 1750 transitions. [2024-11-03 02:03:07,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 02:03:07,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 1750 transitions. [2024-11-03 02:03:07,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-03 02:03:07,508 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:03:07,508 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 10, 10, 10, 10, 10, 8, 8, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 02:03:07,511 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 02:03:07,708 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 02:03:07,709 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:03:07,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:03:07,709 INFO L85 PathProgramCache]: Analyzing trace with hash -390571940, now seen corresponding path program 1 times [2024-11-03 02:03:07,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:03:07,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553255638] [2024-11-03 02:03:07,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:03:07,710 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:03:07,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:03:07,712 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 02:03:07,713 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 02:03:07,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:03:07,862 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:03:07,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:03:07,915 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 416 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2024-11-03 02:03:07,916 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:03:07,968 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 416 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2024-11-03 02:03:07,968 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:03:07,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553255638] [2024-11-03 02:03:07,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1553255638] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:03:07,968 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:03:07,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 02:03:07,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627328135] [2024-11-03 02:03:07,968 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:03:07,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 02:03:07,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:03:07,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 02:03:07,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 02:03:07,970 INFO L87 Difference]: Start difference. First operand 1290 states and 1750 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 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 02:03:08,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:03:08,077 INFO L93 Difference]: Finished difference Result 4899 states and 6678 transitions. [2024-11-03 02:03:08,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 02:03:08,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 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 225 [2024-11-03 02:03:08,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:03:08,090 INFO L225 Difference]: With dead ends: 4899 [2024-11-03 02:03:08,091 INFO L226 Difference]: Without dead ends: 3646 [2024-11-03 02:03:08,093 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 446 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 02:03:08,094 INFO L432 NwaCegarLoop]: 423 mSDtfsCounter, 246 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 02:03:08,095 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 900 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 02:03:08,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3646 states. [2024-11-03 02:03:08,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3646 to 3642. [2024-11-03 02:03:08,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 3641 states have (on average 1.3622631145289756) internal successors, (4960), 3641 states have internal predecessors, (4960), 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 02:03:08,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 4960 transitions. [2024-11-03 02:03:08,222 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 4960 transitions. Word has length 225 [2024-11-03 02:03:08,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:03:08,222 INFO L471 AbstractCegarLoop]: Abstraction has 3642 states and 4960 transitions. [2024-11-03 02:03:08,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 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 02:03:08,223 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 4960 transitions. [2024-11-03 02:03:08,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-03 02:03:08,230 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:03:08,230 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 10, 10, 10, 10, 10, 8, 8, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 02:03:08,233 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 02:03:08,430 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 02:03:08,431 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:03:08,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:03:08,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1606725666, now seen corresponding path program 1 times [2024-11-03 02:03:08,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:03:08,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051085754] [2024-11-03 02:03:08,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:03:08,432 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:03:08,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:03:08,435 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 02:03:08,436 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 02:03:08,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:03:08,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:03:08,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:03:08,594 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 338 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2024-11-03 02:03:08,594 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:03:08,611 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 338 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2024-11-03 02:03:08,611 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:03:08,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051085754] [2024-11-03 02:03:08,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1051085754] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:03:08,611 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:03:08,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 02:03:08,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970550461] [2024-11-03 02:03:08,612 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:03:08,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 02:03:08,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:03:08,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 02:03:08,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 02:03:08,613 INFO L87 Difference]: Start difference. First operand 3642 states and 4960 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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 02:03:08,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:03:08,844 INFO L93 Difference]: Finished difference Result 7787 states and 10816 transitions. [2024-11-03 02:03:08,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 02:03:08,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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 225 [2024-11-03 02:03:08,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:03:08,860 INFO L225 Difference]: With dead ends: 7787 [2024-11-03 02:03:08,860 INFO L226 Difference]: Without dead ends: 4182 [2024-11-03 02:03:08,866 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 446 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 02:03:08,867 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 89 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 02:03:08,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 209 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 02:03:08,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4182 states. [2024-11-03 02:03:08,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4182 to 4182. [2024-11-03 02:03:08,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4182 states, 4181 states have (on average 1.3298254006218608) internal successors, (5560), 4181 states have internal predecessors, (5560), 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 02:03:09,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4182 states to 4182 states and 5560 transitions. [2024-11-03 02:03:09,009 INFO L78 Accepts]: Start accepts. Automaton has 4182 states and 5560 transitions. Word has length 225 [2024-11-03 02:03:09,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:03:09,010 INFO L471 AbstractCegarLoop]: Abstraction has 4182 states and 5560 transitions. [2024-11-03 02:03:09,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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 02:03:09,010 INFO L276 IsEmpty]: Start isEmpty. Operand 4182 states and 5560 transitions. [2024-11-03 02:03:09,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-11-03 02:03:09,016 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:03:09,016 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 11, 11, 11, 11, 9, 9, 7, 7, 6, 6, 5, 5, 3, 3, 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] [2024-11-03 02:03:09,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2024-11-03 02:03:09,217 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 02:03:09,217 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:03:09,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:03:09,218 INFO L85 PathProgramCache]: Analyzing trace with hash -573362712, now seen corresponding path program 1 times [2024-11-03 02:03:09,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:03:09,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648195989] [2024-11-03 02:03:09,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:03:09,218 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:03:09,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:03:09,221 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 02:03:09,222 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 02:03:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:03:09,368 INFO L255 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:03:09,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:03:09,390 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 393 proven. 0 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2024-11-03 02:03:09,390 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:03:09,409 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 393 proven. 0 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2024-11-03 02:03:09,409 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:03:09,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648195989] [2024-11-03 02:03:09,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [648195989] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:03:09,409 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:03:09,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 02:03:09,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564399806] [2024-11-03 02:03:09,410 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:03:09,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 02:03:09,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:03:09,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 02:03:09,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 02:03:09,412 INFO L87 Difference]: Start difference. First operand 4182 states and 5560 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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 02:03:09,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:03:09,656 INFO L93 Difference]: Finished difference Result 8492 states and 11356 transitions. [2024-11-03 02:03:09,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 02:03:09,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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 249 [2024-11-03 02:03:09,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:03:09,673 INFO L225 Difference]: With dead ends: 8492 [2024-11-03 02:03:09,673 INFO L226 Difference]: Without dead ends: 4347 [2024-11-03 02:03:09,680 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 494 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 02:03:09,681 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 94 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 02:03:09,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 251 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 02:03:09,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4347 states. [2024-11-03 02:03:09,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4347 to 4347. [2024-11-03 02:03:09,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4347 states, 4346 states have (on average 1.3196042337781868) internal successors, (5735), 4346 states have internal predecessors, (5735), 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 02:03:09,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4347 states to 4347 states and 5735 transitions. [2024-11-03 02:03:09,802 INFO L78 Accepts]: Start accepts. Automaton has 4347 states and 5735 transitions. Word has length 249 [2024-11-03 02:03:09,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:03:09,802 INFO L471 AbstractCegarLoop]: Abstraction has 4347 states and 5735 transitions. [2024-11-03 02:03:09,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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 02:03:09,803 INFO L276 IsEmpty]: Start isEmpty. Operand 4347 states and 5735 transitions. [2024-11-03 02:03:09,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-03 02:03:09,809 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:03:09,810 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 11, 11, 11, 9, 9, 7, 7, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:03:09,814 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 02:03:10,011 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 02:03:10,011 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:03:10,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:03:10,012 INFO L85 PathProgramCache]: Analyzing trace with hash 808491776, now seen corresponding path program 1 times [2024-11-03 02:03:10,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:03:10,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120146206] [2024-11-03 02:03:10,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:03:10,012 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:03:10,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:03:10,015 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 02:03:10,016 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 02:03:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:03:10,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:03:10,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:03:10,213 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 404 proven. 0 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2024-11-03 02:03:10,213 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:03:10,234 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 404 proven. 0 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2024-11-03 02:03:10,235 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:03:10,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120146206] [2024-11-03 02:03:10,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2120146206] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:03:10,235 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:03:10,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 02:03:10,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802510430] [2024-11-03 02:03:10,236 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:03:10,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 02:03:10,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:03:10,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 02:03:10,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 02:03:10,237 INFO L87 Difference]: Start difference. First operand 4347 states and 5735 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 02:03:10,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:03:10,510 INFO L93 Difference]: Finished difference Result 9212 states and 12381 transitions. [2024-11-03 02:03:10,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 02:03:10,511 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 261 [2024-11-03 02:03:10,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:03:10,531 INFO L225 Difference]: With dead ends: 9212 [2024-11-03 02:03:10,531 INFO L226 Difference]: Without dead ends: 4902 [2024-11-03 02:03:10,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 518 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 02:03:10,540 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 94 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 02:03:10,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 248 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 02:03:10,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4902 states. [2024-11-03 02:03:10,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4902 to 4902. [2024-11-03 02:03:10,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4902 states, 4901 states have (on average 1.295653948173842) internal successors, (6350), 4901 states have internal predecessors, (6350), 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 02:03:10,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4902 states to 4902 states and 6350 transitions. [2024-11-03 02:03:10,669 INFO L78 Accepts]: Start accepts. Automaton has 4902 states and 6350 transitions. Word has length 261 [2024-11-03 02:03:10,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:03:10,670 INFO L471 AbstractCegarLoop]: Abstraction has 4902 states and 6350 transitions. [2024-11-03 02:03:10,670 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 02:03:10,670 INFO L276 IsEmpty]: Start isEmpty. Operand 4902 states and 6350 transitions. [2024-11-03 02:03:10,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2024-11-03 02:03:10,678 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:03:10,678 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 10, 10, 8, 8, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:03:10,682 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2024-11-03 02:03:10,878 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 02:03:10,879 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:03:10,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:03:10,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1178275335, now seen corresponding path program 1 times [2024-11-03 02:03:10,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:03:10,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884551106] [2024-11-03 02:03:10,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:03:10,880 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:03:10,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:03:10,883 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 02:03:10,884 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 02:03:11,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:03:11,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:03:11,062 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:03:11,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 469 proven. 0 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2024-11-03 02:03:11,126 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:03:11,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 469 proven. 0 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2024-11-03 02:03:11,195 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:03:11,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884551106] [2024-11-03 02:03:11,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1884551106] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:03:11,196 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:03:11,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 02:03:11,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655861851] [2024-11-03 02:03:11,209 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:03:11,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 02:03:11,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:03:11,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 02:03:11,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 02:03:11,210 INFO L87 Difference]: Start difference. First operand 4902 states and 6350 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 02:03:11,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:03:11,318 INFO L93 Difference]: Finished difference Result 14616 states and 18928 transitions. [2024-11-03 02:03:11,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 02:03:11,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 298 [2024-11-03 02:03:11,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:03:11,351 INFO L225 Difference]: With dead ends: 14616 [2024-11-03 02:03:11,351 INFO L226 Difference]: Without dead ends: 9751 [2024-11-03 02:03:11,362 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 593 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 02:03:11,363 INFO L432 NwaCegarLoop]: 311 mSDtfsCounter, 118 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 02:03:11,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 470 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 02:03:11,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9751 states. [2024-11-03 02:03:11,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9751 to 9749. [2024-11-03 02:03:11,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9749 states, 9748 states have (on average 1.2909314731226917) internal successors, (12584), 9748 states have internal predecessors, (12584), 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 02:03:11,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9749 states to 9749 states and 12584 transitions. [2024-11-03 02:03:11,648 INFO L78 Accepts]: Start accepts. Automaton has 9749 states and 12584 transitions. Word has length 298 [2024-11-03 02:03:11,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:03:11,649 INFO L471 AbstractCegarLoop]: Abstraction has 9749 states and 12584 transitions. [2024-11-03 02:03:11,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 02:03:11,649 INFO L276 IsEmpty]: Start isEmpty. Operand 9749 states and 12584 transitions. [2024-11-03 02:03:11,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2024-11-03 02:03:11,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:03:11,663 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 10, 10, 8, 8, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:03:11,668 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 02:03:11,864 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 02:03:11,864 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:03:11,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:03:11,865 INFO L85 PathProgramCache]: Analyzing trace with hash -627162999, now seen corresponding path program 1 times [2024-11-03 02:03:11,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:03:11,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506691410] [2024-11-03 02:03:11,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:03:11,865 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:03:11,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:03:11,868 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 02:03:11,869 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 02:03:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:03:12,022 INFO L255 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:03:12,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:03:12,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-11-03 02:03:12,307 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:03:12,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-11-03 02:03:12,603 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:03:12,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506691410] [2024-11-03 02:03:12,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1506691410] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:03:12,604 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:03:12,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 02:03:12,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439258680] [2024-11-03 02:03:12,604 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:03:12,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 02:03:12,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:03:12,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 02:03:12,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 02:03:12,606 INFO L87 Difference]: Start difference. First operand 9749 states and 12584 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 02:03:12,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:03:12,768 INFO L93 Difference]: Finished difference Result 14586 states and 18799 transitions. [2024-11-03 02:03:12,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 02:03:12,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 298 [2024-11-03 02:03:12,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:03:12,788 INFO L225 Difference]: With dead ends: 14586 [2024-11-03 02:03:12,788 INFO L226 Difference]: Without dead ends: 9751 [2024-11-03 02:03:12,796 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 593 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 02:03:12,797 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 68 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 02:03:12,797 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 326 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 02:03:12,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9751 states. [2024-11-03 02:03:13,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9751 to 9749. [2024-11-03 02:03:13,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9749 states, 9748 states have (on average 1.2866228970045137) internal successors, (12542), 9748 states have internal predecessors, (12542), 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 02:03:13,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9749 states to 9749 states and 12542 transitions. [2024-11-03 02:03:13,052 INFO L78 Accepts]: Start accepts. Automaton has 9749 states and 12542 transitions. Word has length 298 [2024-11-03 02:03:13,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:03:13,052 INFO L471 AbstractCegarLoop]: Abstraction has 9749 states and 12542 transitions. [2024-11-03 02:03:13,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 02:03:13,053 INFO L276 IsEmpty]: Start isEmpty. Operand 9749 states and 12542 transitions. [2024-11-03 02:03:13,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2024-11-03 02:03:13,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:03:13,067 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 10, 10, 8, 8, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:03:13,071 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 02:03:13,268 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 02:03:13,268 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:03:13,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:03:13,269 INFO L85 PathProgramCache]: Analyzing trace with hash 425310349, now seen corresponding path program 1 times [2024-11-03 02:03:13,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:03:13,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934525159] [2024-11-03 02:03:13,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:03:13,269 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:03:13,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:03:13,271 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 02:03:13,272 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 02:03:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:03:13,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:03:13,413 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:03:13,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 463 proven. 0 refuted. 0 times theorem prover too weak. 601 trivial. 0 not checked. [2024-11-03 02:03:13,435 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:03:13,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 463 proven. 0 refuted. 0 times theorem prover too weak. 601 trivial. 0 not checked. [2024-11-03 02:03:13,456 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:03:13,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934525159] [2024-11-03 02:03:13,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [934525159] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:03:13,457 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:03:13,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 02:03:13,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266475959] [2024-11-03 02:03:13,459 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:03:13,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 02:03:13,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:03:13,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 02:03:13,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 02:03:13,461 INFO L87 Difference]: Start difference. First operand 9749 states and 12542 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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 02:03:13,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:03:13,778 INFO L93 Difference]: Finished difference Result 20677 states and 27114 transitions. [2024-11-03 02:03:13,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 02:03:13,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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 298 [2024-11-03 02:03:13,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:03:13,802 INFO L225 Difference]: With dead ends: 20677 [2024-11-03 02:03:13,802 INFO L226 Difference]: Without dead ends: 10994 [2024-11-03 02:03:13,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 592 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 02:03:13,816 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 99 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 02:03:13,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 205 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 02:03:13,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10994 states. [2024-11-03 02:03:14,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10994 to 10964. [2024-11-03 02:03:14,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10964 states, 10963 states have (on average 1.2658031560704186) internal successors, (13877), 10963 states have internal predecessors, (13877), 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 02:03:14,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10964 states to 10964 states and 13877 transitions. [2024-11-03 02:03:14,071 INFO L78 Accepts]: Start accepts. Automaton has 10964 states and 13877 transitions. Word has length 298 [2024-11-03 02:03:14,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:03:14,072 INFO L471 AbstractCegarLoop]: Abstraction has 10964 states and 13877 transitions. [2024-11-03 02:03:14,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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 02:03:14,072 INFO L276 IsEmpty]: Start isEmpty. Operand 10964 states and 13877 transitions. [2024-11-03 02:03:14,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-03 02:03:14,086 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:03:14,087 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 12, 10, 10, 8, 8, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:03:14,090 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 02:03:14,287 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 02:03:14,287 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:03:14,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:03:14,288 INFO L85 PathProgramCache]: Analyzing trace with hash 2116106570, now seen corresponding path program 1 times [2024-11-03 02:03:14,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:03:14,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584875409] [2024-11-03 02:03:14,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:03:14,288 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:03:14,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:03:14,289 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 02:03:14,291 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 02:03:14,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:03:14,427 INFO L255 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:03:14,430 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:03:14,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 475 proven. 0 refuted. 0 times theorem prover too weak. 601 trivial. 0 not checked. [2024-11-03 02:03:14,450 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:03:14,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 475 proven. 0 refuted. 0 times theorem prover too weak. 601 trivial. 0 not checked. [2024-11-03 02:03:14,473 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:03:14,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584875409] [2024-11-03 02:03:14,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1584875409] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:03:14,473 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:03:14,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 02:03:14,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435432381] [2024-11-03 02:03:14,474 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:03:14,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 02:03:14,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:03:14,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 02:03:14,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 02:03:14,475 INFO L87 Difference]: Start difference. First operand 10964 states and 13877 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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 02:03:14,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:03:14,838 INFO L93 Difference]: Finished difference Result 23092 states and 29739 transitions. [2024-11-03 02:03:14,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 02:03:14,838 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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 300 [2024-11-03 02:03:14,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:03:14,861 INFO L225 Difference]: With dead ends: 23092 [2024-11-03 02:03:14,862 INFO L226 Difference]: Without dead ends: 10889 [2024-11-03 02:03:14,876 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 596 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 02:03:14,876 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 97 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 02:03:14,877 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 211 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 02:03:14,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10889 states. [2024-11-03 02:03:15,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10889 to 10859. [2024-11-03 02:03:15,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10859 states, 10858 states have (on average 1.2614662000368393) internal successors, (13697), 10858 states have internal predecessors, (13697), 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 02:03:15,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10859 states to 10859 states and 13697 transitions. [2024-11-03 02:03:15,250 INFO L78 Accepts]: Start accepts. Automaton has 10859 states and 13697 transitions. Word has length 300 [2024-11-03 02:03:15,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:03:15,250 INFO L471 AbstractCegarLoop]: Abstraction has 10859 states and 13697 transitions. [2024-11-03 02:03:15,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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 02:03:15,251 INFO L276 IsEmpty]: Start isEmpty. Operand 10859 states and 13697 transitions. [2024-11-03 02:03:15,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-11-03 02:03:15,265 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:03:15,266 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 9, 9, 8, 8, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 02:03:15,270 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 02:03:15,467 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 02:03:15,467 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:03:15,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:03:15,469 INFO L85 PathProgramCache]: Analyzing trace with hash -828156331, now seen corresponding path program 1 times [2024-11-03 02:03:15,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:03:15,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406247803] [2024-11-03 02:03:15,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:03:15,469 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:03:15,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:03:15,472 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 02:03:15,473 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 02:03:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:03:15,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 02:03:15,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:03:15,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 472 proven. 12 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2024-11-03 02:03:15,731 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:03:15,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 472 proven. 12 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2024-11-03 02:03:15,807 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:03:15,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406247803] [2024-11-03 02:03:15,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [406247803] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 02:03:15,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 02:03:15,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-11-03 02:03:15,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787020404] [2024-11-03 02:03:15,808 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 02:03:15,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 02:03:15,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:03:15,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 02:03:15,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-03 02:03:15,809 INFO L87 Difference]: Start difference. First operand 10859 states and 13697 transitions. Second operand has 6 states, 6 states have (on average 36.666666666666664) internal successors, (220), 6 states have internal predecessors, (220), 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 02:03:16,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:03:16,424 INFO L93 Difference]: Finished difference Result 20341 states and 25731 transitions. [2024-11-03 02:03:16,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-03 02:03:16,425 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 36.666666666666664) internal successors, (220), 6 states have internal predecessors, (220), 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 308 [2024-11-03 02:03:16,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:03:16,440 INFO L225 Difference]: With dead ends: 20341 [2024-11-03 02:03:16,441 INFO L226 Difference]: Without dead ends: 7231 [2024-11-03 02:03:16,451 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 613 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-11-03 02:03:16,452 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 229 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 02:03:16,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 740 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-03 02:03:16,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7231 states. [2024-11-03 02:03:16,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7231 to 5945. [2024-11-03 02:03:16,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5945 states, 5944 states have (on average 1.2851615074024225) internal successors, (7639), 5944 states have internal predecessors, (7639), 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 02:03:16,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5945 states to 5945 states and 7639 transitions. [2024-11-03 02:03:16,585 INFO L78 Accepts]: Start accepts. Automaton has 5945 states and 7639 transitions. Word has length 308 [2024-11-03 02:03:16,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:03:16,585 INFO L471 AbstractCegarLoop]: Abstraction has 5945 states and 7639 transitions. [2024-11-03 02:03:16,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.666666666666664) internal successors, (220), 6 states have internal predecessors, (220), 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 02:03:16,585 INFO L276 IsEmpty]: Start isEmpty. Operand 5945 states and 7639 transitions. [2024-11-03 02:03:16,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-11-03 02:03:16,591 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:03:16,592 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 10, 9, 8, 8, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 02:03:16,595 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 02:03:16,792 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 02:03:16,792 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:03:16,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:03:16,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1448829880, now seen corresponding path program 1 times [2024-11-03 02:03:16,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:03:16,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961867699] [2024-11-03 02:03:16,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:03:16,793 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:03:16,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:03:16,794 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 02:03:16,795 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 02:03:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:03:16,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 02:03:16,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:03:17,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 480 proven. 13 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2024-11-03 02:03:17,004 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:03:17,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 480 proven. 13 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2024-11-03 02:03:17,065 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:03:17,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961867699] [2024-11-03 02:03:17,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [961867699] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 02:03:17,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 02:03:17,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-11-03 02:03:17,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107129790] [2024-11-03 02:03:17,065 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 02:03:17,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 02:03:17,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:03:17,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 02:03:17,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-03 02:03:17,067 INFO L87 Difference]: Start difference. First operand 5945 states and 7639 transitions. Second operand has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 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 02:03:17,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:03:17,405 INFO L93 Difference]: Finished difference Result 8014 states and 10267 transitions. [2024-11-03 02:03:17,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 02:03:17,406 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 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 310 [2024-11-03 02:03:17,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:03:17,408 INFO L225 Difference]: With dead ends: 8014 [2024-11-03 02:03:17,409 INFO L226 Difference]: Without dead ends: 0 [2024-11-03 02:03:17,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 616 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 02:03:17,414 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 112 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 02:03:17,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 325 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 02:03:17,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-03 02:03:17,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-03 02:03:17,417 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 02:03:17,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-03 02:03:17,419 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 310 [2024-11-03 02:03:17,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:03:17,419 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-03 02:03:17,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 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 02:03:17,419 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-03 02:03:17,419 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-03 02:03:17,423 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-03 02:03:17,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2024-11-03 02:03:17,623 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 02:03:17,626 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] [2024-11-03 02:03:17,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-03 02:03:19,814 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-03 02:03:19,838 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:03:19 BoogieIcfgContainer [2024-11-03 02:03:19,838 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-03 02:03:19,838 INFO L158 Benchmark]: Toolchain (without parser) took 19767.71ms. Allocated memory was 291.5MB in the beginning and 559.9MB in the end (delta: 268.4MB). Free memory was 243.2MB in the beginning and 343.2MB in the end (delta: -100.0MB). Peak memory consumption was 412.5MB. Max. memory is 8.0GB. [2024-11-03 02:03:19,839 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 187.7MB. Free memory is still 141.0MB. There was no memory consumed. Max. memory is 8.0GB. [2024-11-03 02:03:19,839 INFO L158 Benchmark]: CACSL2BoogieTranslator took 384.47ms. Allocated memory is still 291.5MB. Free memory was 243.2MB in the beginning and 225.4MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2024-11-03 02:03:19,842 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.32ms. Allocated memory is still 291.5MB. Free memory was 225.4MB in the beginning and 222.6MB in the end (delta: 2.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2024-11-03 02:03:19,843 INFO L158 Benchmark]: Boogie Preprocessor took 97.07ms. Allocated memory is still 291.5MB. Free memory was 222.6MB in the beginning and 219.5MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2024-11-03 02:03:19,843 INFO L158 Benchmark]: RCFGBuilder took 777.99ms. Allocated memory is still 291.5MB. Free memory was 219.5MB in the beginning and 242.5MB in the end (delta: -23.0MB). Peak memory consumption was 26.1MB. Max. memory is 8.0GB. [2024-11-03 02:03:19,843 INFO L158 Benchmark]: TraceAbstraction took 18449.87ms. Allocated memory was 291.5MB in the beginning and 559.9MB in the end (delta: 268.4MB). Free memory was 242.0MB in the beginning and 343.2MB in the end (delta: -101.2MB). Peak memory consumption was 410.5MB. Max. memory is 8.0GB. [2024-11-03 02:03:19,844 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47ms. Allocated memory is still 187.7MB. Free memory is still 141.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 384.47ms. Allocated memory is still 291.5MB. Free memory was 243.2MB in the beginning and 225.4MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 51.32ms. Allocated memory is still 291.5MB. Free memory was 225.4MB in the beginning and 222.6MB in the end (delta: 2.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 97.07ms. Allocated memory is still 291.5MB. Free memory was 222.6MB in the beginning and 219.5MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 777.99ms. Allocated memory is still 291.5MB. Free memory was 219.5MB in the beginning and 242.5MB in the end (delta: -23.0MB). Peak memory consumption was 26.1MB. Max. memory is 8.0GB. * TraceAbstraction took 18449.87ms. Allocated memory was 291.5MB in the beginning and 559.9MB in the end (delta: 268.4MB). Free memory was 242.0MB in the beginning and 343.2MB in the end (delta: -101.2MB). Peak memory consumption was 410.5MB. 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: 624]: 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, 126 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 16.2s, OverallIterations: 21, TraceHistogramMax: 14, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2232 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2232 mSDsluCounter, 7397 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3694 mSDsCounter, 480 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3182 IncrementalHoareTripleChecker+Invalid, 3662 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 480 mSolverCounterUnsat, 3703 mSDtfsCounter, 3182 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7596 GetRequests, 7552 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10964occurred in iteration=18, InterpolantAutomatonStates: 83, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.1s AutomataMinimizationTime, 21 MinimizatonAttempts, 1354 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 3814 NumberOfCodeBlocks, 3814 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 7586 ConstructedInterpolants, 0 QuantifiedInterpolants, 10768 SizeOfPredicates, 2 NumberOfNonLiveVariables, 4738 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 42 InterpolantComputations, 38 PerfectInterpolantSequences, 22208/22258 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: 109]: Loop Invariant Derived loop invariant: (((((((((((((((((4432 == s__state) && (5 != blastFlag)) || (2 == blastFlag)) || ((4384 == s__state) && (1 == blastFlag))) || ((((5 != blastFlag) && (0 != s__hit)) && (4352 == s__state)) && (3 == s__s3__tmp__next_state___0))) || ((0 == blastFlag) && (12292 == s__state))) || ((5 != blastFlag) && (4512 == s__state))) || (3 == blastFlag)) || ((5 != blastFlag) && (4528 == s__state))) || ((((5 != blastFlag) && (4560 == s__s3__tmp__next_state___0)) && (0 == s__hit)) && (4352 == s__state))) || ((((5 != blastFlag) && (4560 == s__state)) && (4560 == s__s3__tmp__next_state___0)) && (0 == s__hit))) || (3 == s__state)) || ((5 != blastFlag) && (4496 == s__state))) || ((5 != blastFlag) && (4480 == s__state))) || ((4368 == s__state) && (0 == blastFlag))) || ((4448 == s__state) && (5 != blastFlag))) || ((5 != blastFlag) && (4464 == s__state))) RESULT: Ultimate proved your program to be correct! [2024-11-03 02:03:19,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...