/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/Problem05_label40+token_ring.04.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 00:30:43,332 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 00:30:43,368 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 00:30:43,371 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 00:30:43,371 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 00:30:43,384 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 00:30:43,385 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 00:30:43,385 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 00:30:43,385 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 00:30:43,385 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 00:30:43,386 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 00:30:43,386 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 00:30:43,386 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 00:30:43,387 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 00:30:43,387 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 00:30:43,387 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 00:30:43,387 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 00:30:43,388 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 00:30:43,388 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 00:30:43,388 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 00:30:43,388 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 00:30:43,389 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 00:30:43,389 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 00:30:43,389 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 00:30:43,389 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 00:30:43,390 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 00:30:43,390 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 00:30:43,390 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 00:30:43,390 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 00:30:43,391 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 00:30:43,391 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 00:30:43,391 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 00:30:43,391 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:30:43,391 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 00:30:43,392 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 00:30:43,392 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 00:30:43,392 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 00:30:43,392 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 00:30:43,392 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 00:30:43,392 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 00:30:43,393 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 00:30:43,404 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 00:30:43,404 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 00:30:43,404 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 00:30:43,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 00:30:43,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 00:30:43,605 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 00:30:43,606 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 00:30:43,606 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 00:30:43,606 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label40+token_ring.04.cil-1.c [2023-12-16 00:30:44,560 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 00:30:45,063 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 00:30:45,064 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label40+token_ring.04.cil-1.c [2023-12-16 00:30:45,104 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a83f07f47/e16fcaab108f4cc8828573099e7cee88/FLAG6229091b4 [2023-12-16 00:30:45,113 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a83f07f47/e16fcaab108f4cc8828573099e7cee88 [2023-12-16 00:30:45,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 00:30:45,116 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 00:30:45,116 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 00:30:45,117 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 00:30:45,121 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 00:30:45,122 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:30:45" (1/1) ... [2023-12-16 00:30:45,122 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b8b67f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:45, skipping insertion in model container [2023-12-16 00:30:45,123 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:30:45" (1/1) ... [2023-12-16 00:30:45,282 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 00:30:46,654 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label40+token_ring.04.cil-1.c[377069,377082] [2023-12-16 00:30:46,678 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label40+token_ring.04.cil-1.c[383339,383352] [2023-12-16 00:30:46,785 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:30:46,794 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 00:30:47,396 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label40+token_ring.04.cil-1.c[377069,377082] [2023-12-16 00:30:47,402 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label40+token_ring.04.cil-1.c[383339,383352] [2023-12-16 00:30:47,421 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:30:47,462 INFO L206 MainTranslator]: Completed translation [2023-12-16 00:30:47,463 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:47 WrapperNode [2023-12-16 00:30:47,464 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 00:30:47,465 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 00:30:47,465 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 00:30:47,465 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 00:30:47,469 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:47" (1/1) ... [2023-12-16 00:30:47,526 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:47" (1/1) ... [2023-12-16 00:30:47,852 INFO L138 Inliner]: procedures = 52, calls = 53, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 12753 [2023-12-16 00:30:47,852 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 00:30:47,853 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 00:30:47,853 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 00:30:47,853 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 00:30:47,860 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:47" (1/1) ... [2023-12-16 00:30:47,861 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:47" (1/1) ... [2023-12-16 00:30:47,915 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:47" (1/1) ... [2023-12-16 00:30:47,988 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]. [2023-12-16 00:30:47,988 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:47" (1/1) ... [2023-12-16 00:30:47,988 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:47" (1/1) ... [2023-12-16 00:30:48,227 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:47" (1/1) ... [2023-12-16 00:30:48,251 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:47" (1/1) ... [2023-12-16 00:30:48,270 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:47" (1/1) ... [2023-12-16 00:30:48,288 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:47" (1/1) ... [2023-12-16 00:30:48,443 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 00:30:48,444 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 00:30:48,445 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 00:30:48,445 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 00:30:48,446 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:47" (1/1) ... [2023-12-16 00:30:48,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:30:48,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:30:48,491 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) [2023-12-16 00:30:48,502 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 [2023-12-16 00:30:48,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 00:30:48,517 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-16 00:30:48,517 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-16 00:30:48,518 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-16 00:30:48,518 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-16 00:30:48,519 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-16 00:30:48,519 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-16 00:30:48,519 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-16 00:30:48,519 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-16 00:30:48,519 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-16 00:30:48,519 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-16 00:30:48,519 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-16 00:30:48,519 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-16 00:30:48,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 00:30:48,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 00:30:48,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 00:30:48,589 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 00:30:48,591 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 00:30:53,865 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 00:30:53,960 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 00:30:53,960 INFO L309 CfgBuilder]: Removed 8 assume(true) statements. [2023-12-16 00:30:53,961 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:30:53 BoogieIcfgContainer [2023-12-16 00:30:53,961 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 00:30:53,965 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 00:30:53,966 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 00:30:53,968 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 00:30:53,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:30:45" (1/3) ... [2023-12-16 00:30:53,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616c08dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:30:53, skipping insertion in model container [2023-12-16 00:30:53,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:47" (2/3) ... [2023-12-16 00:30:53,970 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616c08dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:30:53, skipping insertion in model container [2023-12-16 00:30:53,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:30:53" (3/3) ... [2023-12-16 00:30:53,971 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label40+token_ring.04.cil-1.c [2023-12-16 00:30:53,983 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 00:30:53,984 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-16 00:30:54,145 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 00:30:54,149 INFO L357 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, mHoare=true, 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;@792e7a00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 00:30:54,149 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-16 00:30:54,163 INFO L276 IsEmpty]: Start isEmpty. Operand has 2287 states, 2260 states have (on average 1.8836283185840708) internal successors, (4257), 2263 states have internal predecessors, (4257), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-16 00:30:54,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-16 00:30:54,180 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:30:54,180 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:30:54,181 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:30:54,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:30:54,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1377940007, now seen corresponding path program 1 times [2023-12-16 00:30:54,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:30:54,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111384847] [2023-12-16 00:30:54,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:30:54,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:30:54,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:54,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:30:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:54,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 00:30:54,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:54,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 00:30:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:54,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 00:30:54,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:54,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 00:30:54,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:54,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:30:54,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:30:54,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111384847] [2023-12-16 00:30:54,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111384847] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:30:54,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:30:54,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 00:30:54,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269216589] [2023-12-16 00:30:54,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:30:54,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 00:30:54,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:30:54,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 00:30:54,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 00:30:54,642 INFO L87 Difference]: Start difference. First operand has 2287 states, 2260 states have (on average 1.8836283185840708) internal successors, (4257), 2263 states have internal predecessors, (4257), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:30:55,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:30:55,300 INFO L93 Difference]: Finished difference Result 4620 states and 8666 transitions. [2023-12-16 00:30:55,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 00:30:55,302 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-16 00:30:55,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:30:55,321 INFO L225 Difference]: With dead ends: 4620 [2023-12-16 00:30:55,321 INFO L226 Difference]: Without dead ends: 2333 [2023-12-16 00:30:55,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 00:30:55,329 INFO L413 NwaCegarLoop]: 4105 mSDtfsCounter, 411 mSDsluCounter, 12028 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 16133 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 00:30:55,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 16133 Invalid, 486 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [40 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 00:30:55,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2333 states. [2023-12-16 00:30:55,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2333 to 2283. [2023-12-16 00:30:55,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2283 states, 2257 states have (on average 1.8489144882587505) internal successors, (4173), 2259 states have internal predecessors, (4173), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-16 00:30:55,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 4209 transitions. [2023-12-16 00:30:55,420 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 4209 transitions. Word has length 81 [2023-12-16 00:30:55,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:30:55,420 INFO L495 AbstractCegarLoop]: Abstraction has 2283 states and 4209 transitions. [2023-12-16 00:30:55,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:30:55,420 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 4209 transitions. [2023-12-16 00:30:55,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-16 00:30:55,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:30:55,423 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:30:55,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 00:30:55,423 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:30:55,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:30:55,424 INFO L85 PathProgramCache]: Analyzing trace with hash 490717161, now seen corresponding path program 1 times [2023-12-16 00:30:55,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:30:55,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844935819] [2023-12-16 00:30:55,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:30:55,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:30:55,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:55,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:30:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:55,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 00:30:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:55,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 00:30:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:55,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 00:30:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:55,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 00:30:55,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:55,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:30:55,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:30:55,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844935819] [2023-12-16 00:30:55,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844935819] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:30:55,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:30:55,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 00:30:55,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653374227] [2023-12-16 00:30:55,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:30:55,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 00:30:55,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:30:55,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 00:30:55,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 00:30:55,737 INFO L87 Difference]: Start difference. First operand 2283 states and 4209 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:30:56,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:30:56,512 INFO L93 Difference]: Finished difference Result 2690 states and 4863 transitions. [2023-12-16 00:30:56,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 00:30:56,513 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-16 00:30:56,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:30:56,521 INFO L225 Difference]: With dead ends: 2690 [2023-12-16 00:30:56,521 INFO L226 Difference]: Without dead ends: 2538 [2023-12-16 00:30:56,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-16 00:30:56,523 INFO L413 NwaCegarLoop]: 4086 mSDtfsCounter, 4562 mSDsluCounter, 12233 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4573 SdHoareTripleChecker+Valid, 16319 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 00:30:56,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4573 Valid, 16319 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 00:30:56,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2538 states. [2023-12-16 00:30:56,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2538 to 2439. [2023-12-16 00:30:56,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2439 states, 2393 states have (on average 1.8340994567488509) internal successors, (4389), 2396 states have internal predecessors, (4389), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2023-12-16 00:30:56,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2439 states to 2439 states and 4454 transitions. [2023-12-16 00:30:56,565 INFO L78 Accepts]: Start accepts. Automaton has 2439 states and 4454 transitions. Word has length 81 [2023-12-16 00:30:56,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:30:56,565 INFO L495 AbstractCegarLoop]: Abstraction has 2439 states and 4454 transitions. [2023-12-16 00:30:56,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:30:56,565 INFO L276 IsEmpty]: Start isEmpty. Operand 2439 states and 4454 transitions. [2023-12-16 00:30:56,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-16 00:30:56,567 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:30:56,567 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:30:56,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 00:30:56,567 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:30:56,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:30:56,568 INFO L85 PathProgramCache]: Analyzing trace with hash -927081943, now seen corresponding path program 1 times [2023-12-16 00:30:56,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:30:56,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267278425] [2023-12-16 00:30:56,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:30:56,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:30:56,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:56,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:30:56,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:56,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 00:30:56,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:56,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 00:30:56,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:56,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 00:30:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:56,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 00:30:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:56,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:30:56,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:30:56,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267278425] [2023-12-16 00:30:56,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267278425] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:30:56,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:30:56,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:30:56,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090484638] [2023-12-16 00:30:56,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:30:56,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:30:56,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:30:56,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:30:56,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:30:56,677 INFO L87 Difference]: Start difference. First operand 2439 states and 4454 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:30:57,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:30:57,814 INFO L93 Difference]: Finished difference Result 3055 states and 5437 transitions. [2023-12-16 00:30:57,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 00:30:57,814 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-16 00:30:57,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:30:57,822 INFO L225 Difference]: With dead ends: 3055 [2023-12-16 00:30:57,823 INFO L226 Difference]: Without dead ends: 2747 [2023-12-16 00:30:57,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-16 00:30:57,824 INFO L413 NwaCegarLoop]: 4180 mSDtfsCounter, 4567 mSDsluCounter, 16521 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4578 SdHoareTripleChecker+Valid, 20701 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 00:30:57,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4578 Valid, 20701 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 00:30:57,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2747 states. [2023-12-16 00:30:57,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2747 to 2584. [2023-12-16 00:30:57,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2584 states, 2518 states have (on average 1.8200953137410643) internal successors, (4583), 2522 states have internal predecessors, (4583), 44 states have call successors, (44), 18 states have call predecessors, (44), 20 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2023-12-16 00:30:57,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2584 states to 2584 states and 4676 transitions. [2023-12-16 00:30:57,876 INFO L78 Accepts]: Start accepts. Automaton has 2584 states and 4676 transitions. Word has length 81 [2023-12-16 00:30:57,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:30:57,877 INFO L495 AbstractCegarLoop]: Abstraction has 2584 states and 4676 transitions. [2023-12-16 00:30:57,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:30:57,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2584 states and 4676 transitions. [2023-12-16 00:30:57,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-16 00:30:57,878 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:30:57,878 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:30:57,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 00:30:57,878 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:30:57,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:30:57,879 INFO L85 PathProgramCache]: Analyzing trace with hash -2143235669, now seen corresponding path program 1 times [2023-12-16 00:30:57,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:30:57,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203557757] [2023-12-16 00:30:57,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:30:57,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:30:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:57,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:30:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:57,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 00:30:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:57,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 00:30:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:58,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 00:30:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:58,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 00:30:58,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:58,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:30:58,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:30:58,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203557757] [2023-12-16 00:30:58,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203557757] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:30:58,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:30:58,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:30:58,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351127066] [2023-12-16 00:30:58,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:30:58,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:30:58,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:30:58,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:30:58,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:30:58,014 INFO L87 Difference]: Start difference. First operand 2584 states and 4676 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:30:59,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:30:59,175 INFO L93 Difference]: Finished difference Result 3589 states and 6275 transitions. [2023-12-16 00:30:59,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 00:30:59,176 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-16 00:30:59,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:30:59,187 INFO L225 Difference]: With dead ends: 3589 [2023-12-16 00:30:59,187 INFO L226 Difference]: Without dead ends: 3136 [2023-12-16 00:30:59,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-16 00:30:59,207 INFO L413 NwaCegarLoop]: 4095 mSDtfsCounter, 4613 mSDsluCounter, 16302 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4624 SdHoareTripleChecker+Valid, 20397 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 00:30:59,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4624 Valid, 20397 Invalid, 1351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 00:30:59,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3136 states. [2023-12-16 00:30:59,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3136 to 2875. [2023-12-16 00:30:59,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2875 states, 2769 states have (on average 1.795594077284218) internal successors, (4972), 2775 states have internal predecessors, (4972), 70 states have call successors, (70), 30 states have call predecessors, (70), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2023-12-16 00:30:59,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 5125 transitions. [2023-12-16 00:30:59,260 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 5125 transitions. Word has length 81 [2023-12-16 00:30:59,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:30:59,260 INFO L495 AbstractCegarLoop]: Abstraction has 2875 states and 5125 transitions. [2023-12-16 00:30:59,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:30:59,261 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 5125 transitions. [2023-12-16 00:30:59,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-16 00:30:59,262 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:30:59,262 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:30:59,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 00:30:59,262 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:30:59,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:30:59,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1419764201, now seen corresponding path program 1 times [2023-12-16 00:30:59,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:30:59,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274286221] [2023-12-16 00:30:59,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:30:59,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:30:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:59,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:30:59,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:59,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 00:30:59,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:59,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 00:30:59,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:59,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 00:30:59,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:59,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 00:30:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:59,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:30:59,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:30:59,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274286221] [2023-12-16 00:30:59,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274286221] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:30:59,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:30:59,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:30:59,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962619590] [2023-12-16 00:30:59,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:30:59,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:30:59,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:30:59,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:30:59,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:30:59,357 INFO L87 Difference]: Start difference. First operand 2875 states and 5125 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:31:00,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:31:00,130 INFO L93 Difference]: Finished difference Result 3870 states and 6717 transitions. [2023-12-16 00:31:00,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 00:31:00,130 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-16 00:31:00,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:31:00,139 INFO L225 Difference]: With dead ends: 3870 [2023-12-16 00:31:00,139 INFO L226 Difference]: Without dead ends: 3126 [2023-12-16 00:31:00,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-16 00:31:00,142 INFO L413 NwaCegarLoop]: 4073 mSDtfsCounter, 4481 mSDsluCounter, 12140 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4493 SdHoareTripleChecker+Valid, 16213 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 00:31:00,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4493 Valid, 16213 Invalid, 761 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 00:31:00,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3126 states. [2023-12-16 00:31:00,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3126 to 2875. [2023-12-16 00:31:00,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2875 states, 2769 states have (on average 1.79378837125316) internal successors, (4967), 2775 states have internal predecessors, (4967), 70 states have call successors, (70), 30 states have call predecessors, (70), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2023-12-16 00:31:00,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 5120 transitions. [2023-12-16 00:31:00,206 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 5120 transitions. Word has length 81 [2023-12-16 00:31:00,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:31:00,206 INFO L495 AbstractCegarLoop]: Abstraction has 2875 states and 5120 transitions. [2023-12-16 00:31:00,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:31:00,206 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 5120 transitions. [2023-12-16 00:31:00,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-16 00:31:00,207 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:31:00,207 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:31:00,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 00:31:00,208 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:31:00,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:31:00,208 INFO L85 PathProgramCache]: Analyzing trace with hash -266415637, now seen corresponding path program 1 times [2023-12-16 00:31:00,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:31:00,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492755115] [2023-12-16 00:31:00,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:31:00,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:31:00,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:00,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:31:00,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:00,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 00:31:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:00,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 00:31:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:00,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 00:31:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:00,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 00:31:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:00,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:31:00,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:31:00,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492755115] [2023-12-16 00:31:00,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492755115] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:31:00,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:31:00,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:31:00,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109542344] [2023-12-16 00:31:00,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:31:00,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:31:00,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:31:00,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:31:00,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:31:00,366 INFO L87 Difference]: Start difference. First operand 2875 states and 5120 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:31:01,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:31:01,818 INFO L93 Difference]: Finished difference Result 4829 states and 8192 transitions. [2023-12-16 00:31:01,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 00:31:01,818 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-16 00:31:01,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:31:01,832 INFO L225 Difference]: With dead ends: 4829 [2023-12-16 00:31:01,832 INFO L226 Difference]: Without dead ends: 4085 [2023-12-16 00:31:01,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-16 00:31:01,837 INFO L413 NwaCegarLoop]: 4176 mSDtfsCounter, 4711 mSDsluCounter, 16516 mSDsCounter, 0 mSdLazyCounter, 1486 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4727 SdHoareTripleChecker+Valid, 20692 SdHoareTripleChecker+Invalid, 1536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:31:01,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4727 Valid, 20692 Invalid, 1536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1486 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 00:31:01,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4085 states. [2023-12-16 00:31:01,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4085 to 3459. [2023-12-16 00:31:01,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3459 states, 3277 states have (on average 1.7552639609398841) internal successors, (5752), 3287 states have internal predecessors, (5752), 118 states have call successors, (118), 54 states have call predecessors, (118), 62 states have return successors, (153), 125 states have call predecessors, (153), 118 states have call successors, (153) [2023-12-16 00:31:01,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3459 states to 3459 states and 6023 transitions. [2023-12-16 00:31:01,961 INFO L78 Accepts]: Start accepts. Automaton has 3459 states and 6023 transitions. Word has length 81 [2023-12-16 00:31:01,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:31:01,961 INFO L495 AbstractCegarLoop]: Abstraction has 3459 states and 6023 transitions. [2023-12-16 00:31:01,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:31:01,962 INFO L276 IsEmpty]: Start isEmpty. Operand 3459 states and 6023 transitions. [2023-12-16 00:31:01,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-16 00:31:01,964 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:31:01,964 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:31:01,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 00:31:01,964 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:31:01,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:31:01,964 INFO L85 PathProgramCache]: Analyzing trace with hash -683812243, now seen corresponding path program 1 times [2023-12-16 00:31:01,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:31:01,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641214399] [2023-12-16 00:31:01,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:31:01,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:31:01,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:02,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:31:02,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:02,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 00:31:02,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:02,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 00:31:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:02,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 00:31:02,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:02,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 00:31:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:02,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:31:02,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:31:02,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641214399] [2023-12-16 00:31:02,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641214399] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:31:02,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:31:02,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:31:02,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023532263] [2023-12-16 00:31:02,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:31:02,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:31:02,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:31:02,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:31:02,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:31:02,088 INFO L87 Difference]: Start difference. First operand 3459 states and 6023 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:31:03,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:31:03,499 INFO L93 Difference]: Finished difference Result 6997 states and 11579 transitions. [2023-12-16 00:31:03,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 00:31:03,500 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-16 00:31:03,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:31:03,519 INFO L225 Difference]: With dead ends: 6997 [2023-12-16 00:31:03,520 INFO L226 Difference]: Without dead ends: 5669 [2023-12-16 00:31:03,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-16 00:31:03,526 INFO L413 NwaCegarLoop]: 4175 mSDtfsCounter, 4584 mSDsluCounter, 16513 mSDsCounter, 0 mSdLazyCounter, 1701 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4594 SdHoareTripleChecker+Valid, 20688 SdHoareTripleChecker+Invalid, 1750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:31:03,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4594 Valid, 20688 Invalid, 1750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1701 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 00:31:03,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5669 states. [2023-12-16 00:31:03,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5669 to 4582. [2023-12-16 00:31:03,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4582 states, 4252 states have (on average 1.7064910630291628) internal successors, (7256), 4270 states have internal predecessors, (7256), 210 states have call successors, (210), 102 states have call predecessors, (210), 118 states have return successors, (307), 225 states have call predecessors, (307), 210 states have call successors, (307) [2023-12-16 00:31:03,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4582 states to 4582 states and 7773 transitions. [2023-12-16 00:31:03,667 INFO L78 Accepts]: Start accepts. Automaton has 4582 states and 7773 transitions. Word has length 81 [2023-12-16 00:31:03,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:31:03,667 INFO L495 AbstractCegarLoop]: Abstraction has 4582 states and 7773 transitions. [2023-12-16 00:31:03,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:31:03,667 INFO L276 IsEmpty]: Start isEmpty. Operand 4582 states and 7773 transitions. [2023-12-16 00:31:03,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-16 00:31:03,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:31:03,670 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:31:03,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 00:31:03,670 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:31:03,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:31:03,670 INFO L85 PathProgramCache]: Analyzing trace with hash -4539989, now seen corresponding path program 1 times [2023-12-16 00:31:03,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:31:03,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355676332] [2023-12-16 00:31:03,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:31:03,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:31:03,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:03,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:31:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:03,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 00:31:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:03,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 00:31:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:03,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 00:31:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:03,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 00:31:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:03,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:31:03,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:31:03,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355676332] [2023-12-16 00:31:03,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355676332] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:31:03,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:31:03,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:31:03,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368673880] [2023-12-16 00:31:03,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:31:03,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:31:03,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:31:03,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:31:03,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:31:03,772 INFO L87 Difference]: Start difference. First operand 4582 states and 7773 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:31:05,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:31:05,069 INFO L93 Difference]: Finished difference Result 11098 states and 18019 transitions. [2023-12-16 00:31:05,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 00:31:05,069 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-16 00:31:05,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:31:05,100 INFO L225 Difference]: With dead ends: 11098 [2023-12-16 00:31:05,100 INFO L226 Difference]: Without dead ends: 8647 [2023-12-16 00:31:05,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-16 00:31:05,110 INFO L413 NwaCegarLoop]: 4176 mSDtfsCounter, 4639 mSDsluCounter, 16516 mSDsCounter, 0 mSdLazyCounter, 1460 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4655 SdHoareTripleChecker+Valid, 20692 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 00:31:05,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4655 Valid, 20692 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1460 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 00:31:05,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8647 states. [2023-12-16 00:31:05,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8647 to 6867. [2023-12-16 00:31:05,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6867 states, 6249 states have (on average 1.6549847975676109) internal successors, (10342), 6283 states have internal predecessors, (10342), 386 states have call successors, (386), 198 states have call predecessors, (386), 230 states have return successors, (661), 417 states have call predecessors, (661), 386 states have call successors, (661) [2023-12-16 00:31:05,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6867 states to 6867 states and 11389 transitions. [2023-12-16 00:31:05,320 INFO L78 Accepts]: Start accepts. Automaton has 6867 states and 11389 transitions. Word has length 81 [2023-12-16 00:31:05,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:31:05,320 INFO L495 AbstractCegarLoop]: Abstraction has 6867 states and 11389 transitions. [2023-12-16 00:31:05,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:31:05,321 INFO L276 IsEmpty]: Start isEmpty. Operand 6867 states and 11389 transitions. [2023-12-16 00:31:05,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-16 00:31:05,324 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:31:05,324 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:31:05,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 00:31:05,324 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:31:05,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:31:05,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1957034669, now seen corresponding path program 1 times [2023-12-16 00:31:05,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:31:05,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984210695] [2023-12-16 00:31:05,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:31:05,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:31:05,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:05,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:31:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:05,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 00:31:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:05,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 00:31:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:05,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 00:31:05,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:05,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 00:31:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:05,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:31:05,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:31:05,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984210695] [2023-12-16 00:31:05,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984210695] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:31:05,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:31:05,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:31:05,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117338531] [2023-12-16 00:31:05,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:31:05,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:31:05,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:31:05,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:31:05,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:31:05,430 INFO L87 Difference]: Start difference. First operand 6867 states and 11389 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:31:06,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:31:06,850 INFO L93 Difference]: Finished difference Result 19165 states and 30877 transitions. [2023-12-16 00:31:06,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 00:31:06,851 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-16 00:31:06,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:31:06,950 INFO L225 Difference]: With dead ends: 19165 [2023-12-16 00:31:06,950 INFO L226 Difference]: Without dead ends: 14429 [2023-12-16 00:31:06,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-16 00:31:06,975 INFO L413 NwaCegarLoop]: 4176 mSDtfsCounter, 4603 mSDsluCounter, 16516 mSDsCounter, 0 mSdLazyCounter, 1447 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4619 SdHoareTripleChecker+Valid, 20692 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 00:31:06,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4619 Valid, 20692 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1447 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 00:31:06,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14429 states. [2023-12-16 00:31:07,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14429 to 11436. [2023-12-16 00:31:07,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11436 states, 10258 states have (on average 1.6127900175472802) internal successors, (16544), 10324 states have internal predecessors, (16544), 722 states have call successors, (722), 390 states have call predecessors, (722), 454 states have return successors, (1515), 785 states have call predecessors, (1515), 722 states have call successors, (1515) [2023-12-16 00:31:07,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11436 states to 11436 states and 18781 transitions. [2023-12-16 00:31:07,361 INFO L78 Accepts]: Start accepts. Automaton has 11436 states and 18781 transitions. Word has length 81 [2023-12-16 00:31:07,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:31:07,362 INFO L495 AbstractCegarLoop]: Abstraction has 11436 states and 18781 transitions. [2023-12-16 00:31:07,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:31:07,362 INFO L276 IsEmpty]: Start isEmpty. Operand 11436 states and 18781 transitions. [2023-12-16 00:31:07,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-16 00:31:07,369 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:31:07,369 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:31:07,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 00:31:07,369 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:31:07,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:31:07,369 INFO L85 PathProgramCache]: Analyzing trace with hash -2136108693, now seen corresponding path program 1 times [2023-12-16 00:31:07,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:31:07,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156188690] [2023-12-16 00:31:07,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:31:07,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:31:07,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:07,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:31:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:07,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 00:31:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:07,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 00:31:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:07,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 00:31:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:07,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 00:31:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:07,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:31:07,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:31:07,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156188690] [2023-12-16 00:31:07,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156188690] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:31:07,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:31:07,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:31:07,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705079967] [2023-12-16 00:31:07,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:31:07,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:31:07,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:31:07,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:31:07,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:31:07,468 INFO L87 Difference]: Start difference. First operand 11436 states and 18781 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:31:08,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:31:08,962 INFO L93 Difference]: Finished difference Result 34784 states and 56375 transitions. [2023-12-16 00:31:08,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 00:31:08,963 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-16 00:31:08,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:31:09,035 INFO L225 Difference]: With dead ends: 34784 [2023-12-16 00:31:09,035 INFO L226 Difference]: Without dead ends: 25479 [2023-12-16 00:31:09,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-16 00:31:09,068 INFO L413 NwaCegarLoop]: 4166 mSDtfsCounter, 4552 mSDsluCounter, 16504 mSDsCounter, 0 mSdLazyCounter, 1495 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4562 SdHoareTripleChecker+Valid, 20670 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 00:31:09,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4562 Valid, 20670 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1495 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 00:31:09,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25479 states. [2023-12-16 00:31:09,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25479 to 20561. [2023-12-16 00:31:09,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20561 states, 18303 states have (on average 1.5847675244495438) internal successors, (29006), 18433 states have internal predecessors, (29006), 1358 states have call successors, (1358), 770 states have call predecessors, (1358), 898 states have return successors, (3673), 1485 states have call predecessors, (3673), 1358 states have call successors, (3673) [2023-12-16 00:31:09,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20561 states to 20561 states and 34037 transitions. [2023-12-16 00:31:09,920 INFO L78 Accepts]: Start accepts. Automaton has 20561 states and 34037 transitions. Word has length 81 [2023-12-16 00:31:09,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:31:09,920 INFO L495 AbstractCegarLoop]: Abstraction has 20561 states and 34037 transitions. [2023-12-16 00:31:09,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:31:09,921 INFO L276 IsEmpty]: Start isEmpty. Operand 20561 states and 34037 transitions. [2023-12-16 00:31:09,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-16 00:31:09,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:31:09,936 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:31:09,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 00:31:09,936 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:31:09,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:31:09,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1575408915, now seen corresponding path program 1 times [2023-12-16 00:31:09,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:31:09,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956803615] [2023-12-16 00:31:09,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:31:09,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:31:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:09,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:31:09,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:09,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 00:31:09,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:09,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 00:31:09,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:10,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 00:31:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:10,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 00:31:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:10,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:31:10,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:31:10,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956803615] [2023-12-16 00:31:10,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956803615] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:31:10,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:31:10,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 00:31:10,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573954308] [2023-12-16 00:31:10,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:31:10,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 00:31:10,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:31:10,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 00:31:10,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 00:31:10,017 INFO L87 Difference]: Start difference. First operand 20561 states and 34037 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:31:11,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:31:11,827 INFO L93 Difference]: Finished difference Result 54256 states and 88376 transitions. [2023-12-16 00:31:11,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 00:31:11,827 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-16 00:31:11,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:31:11,920 INFO L225 Difference]: With dead ends: 54256 [2023-12-16 00:31:11,920 INFO L226 Difference]: Without dead ends: 35827 [2023-12-16 00:31:11,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-16 00:31:11,967 INFO L413 NwaCegarLoop]: 4213 mSDtfsCounter, 4743 mSDsluCounter, 12309 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4772 SdHoareTripleChecker+Valid, 16522 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 00:31:11,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4772 Valid, 16522 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 00:31:11,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35827 states. [2023-12-16 00:31:12,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35827 to 29690. [2023-12-16 00:31:13,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29690 states, 26260 states have (on average 1.562909367859863) internal successors, (41042), 26519 states have internal predecessors, (41042), 2076 states have call successors, (2076), 1160 states have call predecessors, (2076), 1352 states have return successors, (5121), 2138 states have call predecessors, (5121), 2076 states have call successors, (5121) [2023-12-16 00:31:13,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29690 states to 29690 states and 48239 transitions. [2023-12-16 00:31:13,084 INFO L78 Accepts]: Start accepts. Automaton has 29690 states and 48239 transitions. Word has length 81 [2023-12-16 00:31:13,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:31:13,085 INFO L495 AbstractCegarLoop]: Abstraction has 29690 states and 48239 transitions. [2023-12-16 00:31:13,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:31:13,085 INFO L276 IsEmpty]: Start isEmpty. Operand 29690 states and 48239 transitions. [2023-12-16 00:31:13,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-16 00:31:13,137 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:31:13,137 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 00:31:13,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 00:31:13,138 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:31:13,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:31:13,138 INFO L85 PathProgramCache]: Analyzing trace with hash -162136465, now seen corresponding path program 1 times [2023-12-16 00:31:13,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:31:13,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842399594] [2023-12-16 00:31:13,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:31:13,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:31:13,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:13,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:31:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:13,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 00:31:13,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:13,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 00:31:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:13,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 00:31:13,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:13,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 00:31:13,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:13,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-16 00:31:13,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:13,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:31:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:13,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-16 00:31:13,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:13,227 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 00:31:13,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:31:13,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842399594] [2023-12-16 00:31:13,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842399594] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:31:13,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156227712] [2023-12-16 00:31:13,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:31:13,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:31:13,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:31:13,240 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:31:13,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 00:31:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:13,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 00:31:13,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:31:13,471 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-16 00:31:13,471 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:31:13,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156227712] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:31:13,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 00:31:13,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-16 00:31:13,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942522391] [2023-12-16 00:31:13,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:31:13,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:31:13,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:31:13,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:31:13,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:31:13,473 INFO L87 Difference]: Start difference. First operand 29690 states and 48239 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 00:31:14,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:31:14,876 INFO L93 Difference]: Finished difference Result 84209 states and 136555 transitions. [2023-12-16 00:31:14,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:31:14,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 131 [2023-12-16 00:31:14,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:31:15,225 INFO L225 Difference]: With dead ends: 84209 [2023-12-16 00:31:15,225 INFO L226 Difference]: Without dead ends: 56651 [2023-12-16 00:31:15,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:31:15,277 INFO L413 NwaCegarLoop]: 4184 mSDtfsCounter, 4157 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4157 SdHoareTripleChecker+Valid, 4391 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:31:15,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4157 Valid, 4391 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:31:15,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56651 states. [2023-12-16 00:31:17,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56651 to 56455. [2023-12-16 00:31:17,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56455 states, 49707 states have (on average 1.5459995574064016) internal successors, (76847), 50223 states have internal predecessors, (76847), 4046 states have call successors, (4046), 2316 states have call predecessors, (4046), 2700 states have return successors, (10009), 4043 states have call predecessors, (10009), 4046 states have call successors, (10009) [2023-12-16 00:31:17,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56455 states to 56455 states and 90902 transitions. [2023-12-16 00:31:17,450 INFO L78 Accepts]: Start accepts. Automaton has 56455 states and 90902 transitions. Word has length 131 [2023-12-16 00:31:17,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:31:17,451 INFO L495 AbstractCegarLoop]: Abstraction has 56455 states and 90902 transitions. [2023-12-16 00:31:17,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 00:31:17,451 INFO L276 IsEmpty]: Start isEmpty. Operand 56455 states and 90902 transitions. [2023-12-16 00:31:17,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-16 00:31:17,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:31:17,532 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 00:31:17,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 00:31:17,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-16 00:31:17,737 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:31:17,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:31:17,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1117499279, now seen corresponding path program 1 times [2023-12-16 00:31:17,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:31:17,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801157374] [2023-12-16 00:31:17,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:31:17,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:31:17,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:17,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:31:17,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:17,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 00:31:17,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:17,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 00:31:17,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:17,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 00:31:17,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:17,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 00:31:17,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:17,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-16 00:31:17,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:17,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:31:17,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:17,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-16 00:31:17,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:17,850 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 00:31:17,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:31:17,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801157374] [2023-12-16 00:31:17,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801157374] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:31:17,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670551622] [2023-12-16 00:31:17,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:31:17,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:31:17,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:31:17,866 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:31:17,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 00:31:18,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:18,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 00:31:18,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:31:18,055 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-16 00:31:18,056 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:31:18,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670551622] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:31:18,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 00:31:18,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-16 00:31:18,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974092952] [2023-12-16 00:31:18,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:31:18,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:31:18,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:31:18,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:31:18,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:31:18,057 INFO L87 Difference]: Start difference. First operand 56455 states and 90902 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 00:31:21,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:31:21,333 INFO L93 Difference]: Finished difference Result 163896 states and 264344 transitions. [2023-12-16 00:31:21,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:31:21,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 131 [2023-12-16 00:31:21,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:31:21,683 INFO L225 Difference]: With dead ends: 163896 [2023-12-16 00:31:21,683 INFO L226 Difference]: Without dead ends: 109573 [2023-12-16 00:31:21,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:31:21,817 INFO L413 NwaCegarLoop]: 4184 mSDtfsCounter, 4162 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4162 SdHoareTripleChecker+Valid, 4391 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:31:21,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4162 Valid, 4391 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:31:21,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109573 states. [2023-12-16 00:31:25,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109573 to 109183. [2023-12-16 00:31:25,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109183 states, 95913 states have (on average 1.5345886376195093) internal successors, (147187), 96943 states have internal predecessors, (147187), 7880 states have call successors, (7880), 4620 states have call predecessors, (7880), 5388 states have return successors, (19679), 7747 states have call predecessors, (19679), 7880 states have call successors, (19679) [2023-12-16 00:31:26,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109183 states to 109183 states and 174746 transitions. [2023-12-16 00:31:26,346 INFO L78 Accepts]: Start accepts. Automaton has 109183 states and 174746 transitions. Word has length 131 [2023-12-16 00:31:26,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:31:26,346 INFO L495 AbstractCegarLoop]: Abstraction has 109183 states and 174746 transitions. [2023-12-16 00:31:26,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 00:31:26,346 INFO L276 IsEmpty]: Start isEmpty. Operand 109183 states and 174746 transitions. [2023-12-16 00:31:26,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-16 00:31:26,493 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:31:26,493 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 00:31:26,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 00:31:26,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-16 00:31:26,696 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:31:26,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:31:26,697 INFO L85 PathProgramCache]: Analyzing trace with hash 433566319, now seen corresponding path program 1 times [2023-12-16 00:31:26,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:31:26,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129603205] [2023-12-16 00:31:26,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:31:26,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:31:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:26,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:31:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:26,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 00:31:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:26,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 00:31:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:26,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 00:31:26,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:26,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 00:31:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:26,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-16 00:31:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:26,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:31:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:26,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-16 00:31:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:26,827 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 00:31:26,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:31:26,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129603205] [2023-12-16 00:31:26,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129603205] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:31:26,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612519805] [2023-12-16 00:31:26,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:31:26,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:31:26,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:31:26,828 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:31:26,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 00:31:26,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:26,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 00:31:26,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:31:26,952 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-16 00:31:26,952 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:31:26,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612519805] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:31:26,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 00:31:26,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-16 00:31:26,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620313482] [2023-12-16 00:31:26,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:31:26,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:31:26,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:31:26,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:31:26,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:31:26,953 INFO L87 Difference]: Start difference. First operand 109183 states and 174746 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 00:31:33,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:31:33,413 INFO L93 Difference]: Finished difference Result 319181 states and 515201 transitions. [2023-12-16 00:31:33,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:31:33,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 131 [2023-12-16 00:31:33,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:31:34,406 INFO L225 Difference]: With dead ends: 319181 [2023-12-16 00:31:34,406 INFO L226 Difference]: Without dead ends: 212131 [2023-12-16 00:31:34,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:31:34,569 INFO L413 NwaCegarLoop]: 4395 mSDtfsCounter, 219 mSDsluCounter, 4186 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 8581 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 00:31:34,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 8581 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 00:31:34,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212131 states. [2023-12-16 00:31:41,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212131 to 212131. [2023-12-16 00:31:41,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212131 states, 186258 states have (on average 1.5254056201612816) internal successors, (284119), 188057 states have internal predecessors, (284119), 15167 states have call successors, (15167), 9168 states have call predecessors, (15167), 10704 states have return successors, (41394), 15161 states have call predecessors, (41394), 15167 states have call successors, (41394) Received shutdown request... [2023-12-16 00:31:42,213 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-16 00:31:42,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-16 00:31:42,230 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 00:31:42,230 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 00:31:42,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:31:42,419 WARN L619 AbstractCegarLoop]: Verification canceled: while ReachableStatesComputation was computing reachable states (67564 states constructed, input type DoubleDeckerAutomaton). [2023-12-16 00:31:42,420 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-16 00:31:42,422 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:31:42,424 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 00:31:42,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 12:31:42 BoogieIcfgContainer [2023-12-16 00:31:42,425 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 00:31:42,426 INFO L158 Benchmark]: Toolchain (without parser) took 57310.17ms. Allocated memory was 261.1MB in the beginning and 7.0GB in the end (delta: 6.8GB). Free memory was 188.9MB in the beginning and 5.1GB in the end (delta: -4.9GB). Peak memory consumption was 2.7GB. Max. memory is 8.0GB. [2023-12-16 00:31:42,426 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 163.6MB. Free memory is still 109.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 00:31:42,426 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2347.39ms. Allocated memory was 261.1MB in the beginning and 380.6MB in the end (delta: 119.5MB). Free memory was 188.9MB in the beginning and 183.3MB in the end (delta: 5.6MB). Peak memory consumption was 142.4MB. Max. memory is 8.0GB. [2023-12-16 00:31:42,426 INFO L158 Benchmark]: Boogie Procedure Inliner took 387.45ms. Allocated memory is still 380.6MB. Free memory was 183.3MB in the beginning and 221.6MB in the end (delta: -38.3MB). Peak memory consumption was 69.2MB. Max. memory is 8.0GB. [2023-12-16 00:31:42,426 INFO L158 Benchmark]: Boogie Preprocessor took 589.89ms. Allocated memory was 380.6MB in the beginning and 765.5MB in the end (delta: 384.8MB). Free memory was 221.6MB in the beginning and 597.5MB in the end (delta: -375.9MB). Peak memory consumption was 94.9MB. Max. memory is 8.0GB. [2023-12-16 00:31:42,427 INFO L158 Benchmark]: RCFGBuilder took 5516.64ms. Allocated memory was 765.5MB in the beginning and 1.5GB in the end (delta: 705.7MB). Free memory was 597.5MB in the beginning and 1.0GB in the end (delta: -451.9MB). Peak memory consumption was 398.0MB. Max. memory is 8.0GB. [2023-12-16 00:31:42,427 INFO L158 Benchmark]: TraceAbstraction took 48460.06ms. Allocated memory was 1.5GB in the beginning and 7.0GB in the end (delta: 5.5GB). Free memory was 1.0GB in the beginning and 5.1GB in the end (delta: -4.1GB). Peak memory consumption was 2.4GB. Max. memory is 8.0GB. [2023-12-16 00:31:42,435 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 163.6MB. Free memory is still 109.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 2347.39ms. Allocated memory was 261.1MB in the beginning and 380.6MB in the end (delta: 119.5MB). Free memory was 188.9MB in the beginning and 183.3MB in the end (delta: 5.6MB). Peak memory consumption was 142.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 387.45ms. Allocated memory is still 380.6MB. Free memory was 183.3MB in the beginning and 221.6MB in the end (delta: -38.3MB). Peak memory consumption was 69.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 589.89ms. Allocated memory was 380.6MB in the beginning and 765.5MB in the end (delta: 384.8MB). Free memory was 221.6MB in the beginning and 597.5MB in the end (delta: -375.9MB). Peak memory consumption was 94.9MB. Max. memory is 8.0GB. * RCFGBuilder took 5516.64ms. Allocated memory was 765.5MB in the beginning and 1.5GB in the end (delta: 705.7MB). Free memory was 597.5MB in the beginning and 1.0GB in the end (delta: -451.9MB). Peak memory consumption was 398.0MB. Max. memory is 8.0GB. * TraceAbstraction took 48460.06ms. Allocated memory was 1.5GB in the beginning and 7.0GB in the end (delta: 5.5GB). Free memory was 1.0GB in the beginning and 5.1GB in the end (delta: -4.1GB). Peak memory consumption was 2.4GB. 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 - TimeoutResultAtElement [Line: 11173]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 11173). Cancelled while ReachableStatesComputation was computing reachable states (67564 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 11016]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 11016). Cancelled while ReachableStatesComputation was computing reachable states (67564 states constructed, input type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 2287 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 48.4s, OverallIterations: 14, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 27.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 55162 SdHoareTripleChecker+Valid, 9.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 55004 mSDsluCounter, 227082 SdHoareTripleChecker+Invalid, 7.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 168698 mSDsCounter, 631 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13927 IncrementalHoareTripleChecker+Invalid, 14558 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 631 mSolverCounterUnsat, 58384 mSDtfsCounter, 13927 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 741 GetRequests, 589 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109183occurred in iteration=13, InterpolantAutomatonStates: 145, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 17.4s AutomataMinimizationTime, 14 MinimizatonAttempts, 18951 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 1677 NumberOfCodeBlocks, 1677 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 1660 ConstructedInterpolants, 0 QuantifiedInterpolants, 3687 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1668 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 17 InterpolantComputations, 14 PerfectInterpolantSequences, 156/228 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown