/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.05.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 00:30:44,758 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 00:30:44,825 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 00:30:44,828 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 00:30:44,828 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 00:30:44,853 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 00:30:44,854 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 00:30:44,854 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 00:30:44,855 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 00:30:44,858 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 00:30:44,858 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 00:30:44,859 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 00:30:44,859 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 00:30:44,860 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 00:30:44,860 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 00:30:44,860 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 00:30:44,860 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 00:30:44,861 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 00:30:44,861 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 00:30:44,861 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 00:30:44,861 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 00:30:44,861 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 00:30:44,862 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 00:30:44,862 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 00:30:44,862 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 00:30:44,862 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 00:30:44,862 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 00:30:44,862 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 00:30:44,863 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 00:30:44,863 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 00:30:44,864 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 00:30:44,864 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 00:30:44,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:30:44,864 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 00:30:44,864 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 00:30:44,864 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 00:30:44,864 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 00:30:44,865 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 00:30:44,865 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 00:30:44,865 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 00:30:44,865 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 00:30:44,865 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 00:30:44,865 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 00:30:44,865 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 00:30:45,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 00:30:45,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 00:30:45,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 00:30:45,059 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 00:30:45,059 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 00:30:45,060 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label40+token_ring.05.cil-1.c [2023-12-16 00:30:46,048 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 00:30:46,519 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 00:30:46,520 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label40+token_ring.05.cil-1.c [2023-12-16 00:30:46,565 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/973b8ed43/0dc761a96bad4f8a917a3932449ae192/FLAG098c33f2f [2023-12-16 00:30:46,574 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/973b8ed43/0dc761a96bad4f8a917a3932449ae192 [2023-12-16 00:30:46,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 00:30:46,577 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 00:30:46,578 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 00:30:46,578 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 00:30:46,595 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 00:30:46,595 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:30:46" (1/1) ... [2023-12-16 00:30:46,596 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f4e02af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:46, skipping insertion in model container [2023-12-16 00:30:46,596 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:30:46" (1/1) ... [2023-12-16 00:30:46,794 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 00:30:48,015 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.05.cil-1.c[377069,377082] [2023-12-16 00:30:48,038 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.05.cil-1.c[383339,383352] [2023-12-16 00:30:48,155 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:30:48,166 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 00:30:48,779 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.05.cil-1.c[377069,377082] [2023-12-16 00:30:48,785 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.05.cil-1.c[383339,383352] [2023-12-16 00:30:48,806 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:30:48,915 INFO L206 MainTranslator]: Completed translation [2023-12-16 00:30:48,915 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:48 WrapperNode [2023-12-16 00:30:48,915 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 00:30:48,917 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 00:30:48,917 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 00:30:48,917 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 00:30:48,922 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:48" (1/1) ... [2023-12-16 00:30:48,976 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:48" (1/1) ... [2023-12-16 00:30:49,184 INFO L138 Inliner]: procedures = 54, calls = 56, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 12813 [2023-12-16 00:30:49,184 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 00:30:49,185 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 00:30:49,185 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 00:30:49,185 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 00:30:49,192 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:48" (1/1) ... [2023-12-16 00:30:49,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:48" (1/1) ... [2023-12-16 00:30:49,240 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:48" (1/1) ... [2023-12-16 00:30:49,306 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 00:30:49,307 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:48" (1/1) ... [2023-12-16 00:30:49,307 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:48" (1/1) ... [2023-12-16 00:30:49,580 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:48" (1/1) ... [2023-12-16 00:30:49,615 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:48" (1/1) ... [2023-12-16 00:30:49,766 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:48" (1/1) ... [2023-12-16 00:30:49,781 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:48" (1/1) ... [2023-12-16 00:30:49,836 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 00:30:49,837 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 00:30:49,837 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 00:30:49,837 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 00:30:49,838 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:48" (1/1) ... [2023-12-16 00:30:49,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:30:49,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:30:49,888 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 00:30:49,900 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 00:30:49,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 00:30:49,913 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-16 00:30:49,913 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-16 00:30:49,914 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-16 00:30:49,914 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-16 00:30:49,915 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-16 00:30:49,915 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-16 00:30:49,915 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-16 00:30:49,915 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-16 00:30:49,916 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-16 00:30:49,916 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-16 00:30:49,916 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-16 00:30:49,916 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-16 00:30:49,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 00:30:49,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 00:30:49,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 00:30:50,011 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 00:30:50,012 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 00:30:55,181 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 00:30:55,314 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 00:30:55,315 INFO L309 CfgBuilder]: Removed 9 assume(true) statements. [2023-12-16 00:30:55,315 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:30:55 BoogieIcfgContainer [2023-12-16 00:30:55,315 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 00:30:55,317 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 00:30:55,318 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 00:30:55,320 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 00:30:55,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:30:46" (1/3) ... [2023-12-16 00:30:55,329 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd2f640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:30:55, skipping insertion in model container [2023-12-16 00:30:55,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:48" (2/3) ... [2023-12-16 00:30:55,329 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd2f640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:30:55, skipping insertion in model container [2023-12-16 00:30:55,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:30:55" (3/3) ... [2023-12-16 00:30:55,331 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label40+token_ring.05.cil-1.c [2023-12-16 00:30:55,343 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 00:30:55,343 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-16 00:30:55,470 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 00:30:55,475 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;@1fdd682c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 00:30:55,475 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-16 00:30:55,484 INFO L276 IsEmpty]: Start isEmpty. Operand has 2310 states, 2282 states have (on average 1.8825591586327783) internal successors, (4296), 2285 states have internal predecessors, (4296), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-16 00:30:55,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-16 00:30:55,495 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:30:55,496 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:30:55,496 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:30:55,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:30:55,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1489029610, now seen corresponding path program 1 times [2023-12-16 00:30:55,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:30:55,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011355756] [2023-12-16 00:30:55,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:30:55,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:30:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:55,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:30:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:55,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 00:30:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:55,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 00:30:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:55,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 00:30:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:55,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 00:30:55,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:55,903 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 00:30:55,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:30:55,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011355756] [2023-12-16 00:30:55,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011355756] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:30:55,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:30:55,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 00:30:55,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530653636] [2023-12-16 00:30:55,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:30:55,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 00:30:55,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:30:55,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 00:30:55,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 00:30:55,961 INFO L87 Difference]: Start difference. First operand has 2310 states, 2282 states have (on average 1.8825591586327783) internal successors, (4296), 2285 states have internal predecessors, (4296), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 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 00:30:56,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:30:56,718 INFO L93 Difference]: Finished difference Result 4674 states and 8762 transitions. [2023-12-16 00:30:56,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 00:30:56,720 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 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 91 [2023-12-16 00:30:56,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:30:56,741 INFO L225 Difference]: With dead ends: 4674 [2023-12-16 00:30:56,741 INFO L226 Difference]: Without dead ends: 2366 [2023-12-16 00:30:56,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 00:30:56,752 INFO L413 NwaCegarLoop]: 4124 mSDtfsCounter, 480 mSDsluCounter, 12050 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 16174 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 00:30:56,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 16174 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 00:30:56,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2366 states. [2023-12-16 00:30:56,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2366 to 2306. [2023-12-16 00:30:56,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2306 states, 2279 states have (on average 1.8473014480035104) internal successors, (4210), 2281 states have internal predecessors, (4210), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-16 00:30:56,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2306 states to 2306 states and 4248 transitions. [2023-12-16 00:30:56,832 INFO L78 Accepts]: Start accepts. Automaton has 2306 states and 4248 transitions. Word has length 91 [2023-12-16 00:30:56,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:30:56,833 INFO L495 AbstractCegarLoop]: Abstraction has 2306 states and 4248 transitions. [2023-12-16 00:30:56,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 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 00:30:56,833 INFO L276 IsEmpty]: Start isEmpty. Operand 2306 states and 4248 transitions. [2023-12-16 00:30:56,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-16 00:30:56,836 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:30:56,836 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:30:56,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 00:30:56,837 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:30:56,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:30:56,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1239179736, now seen corresponding path program 1 times [2023-12-16 00:30:56,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:30:56,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615781229] [2023-12-16 00:30:56,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:30:56,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:30:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:56,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:30:56,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:56,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 00:30:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:57,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 00:30:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:57,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 00:30:57,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:57,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 00:30:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:57,046 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 00:30:57,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:30:57,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615781229] [2023-12-16 00:30:57,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615781229] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:30:57,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:30:57,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 00:30:57,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479363270] [2023-12-16 00:30:57,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:30:57,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 00:30:57,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:30:57,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 00:30:57,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 00:30:57,049 INFO L87 Difference]: Start difference. First operand 2306 states and 4248 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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 00:30:58,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:30:58,142 INFO L93 Difference]: Finished difference Result 2779 states and 5016 transitions. [2023-12-16 00:30:58,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 00:30:58,143 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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 91 [2023-12-16 00:30:58,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:30:58,151 INFO L225 Difference]: With dead ends: 2779 [2023-12-16 00:30:58,151 INFO L226 Difference]: Without dead ends: 2605 [2023-12-16 00:30:58,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-16 00:30:58,153 INFO L413 NwaCegarLoop]: 4103 mSDtfsCounter, 4671 mSDsluCounter, 12286 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4683 SdHoareTripleChecker+Valid, 16389 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 00:30:58,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4683 Valid, 16389 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 00:30:58,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2605 states. [2023-12-16 00:30:58,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2605 to 2486. [2023-12-16 00:30:58,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2486 states, 2438 states have (on average 1.8314191960623463) internal successors, (4465), 2441 states have internal predecessors, (4465), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2023-12-16 00:30:58,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 4534 transitions. [2023-12-16 00:30:58,206 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 4534 transitions. Word has length 91 [2023-12-16 00:30:58,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:30:58,206 INFO L495 AbstractCegarLoop]: Abstraction has 2486 states and 4534 transitions. [2023-12-16 00:30:58,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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 00:30:58,206 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 4534 transitions. [2023-12-16 00:30:58,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-16 00:30:58,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:30:58,208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:30:58,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 00:30:58,209 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:30:58,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:30:58,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1642518564, now seen corresponding path program 1 times [2023-12-16 00:30:58,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:30:58,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396816229] [2023-12-16 00:30:58,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:30:58,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:30:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:58,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:30:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:58,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 00:30:58,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:58,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 00:30:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:58,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 00:30:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:58,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 00:30:58,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:30:58,433 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 00:30:58,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:30:58,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396816229] [2023-12-16 00:30:58,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396816229] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:30:58,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:30:58,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:30:58,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020407123] [2023-12-16 00:30:58,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:30:58,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:30:58,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:30:58,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:30:58,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:30:58,441 INFO L87 Difference]: Start difference. First operand 2486 states and 4534 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 00:30:59,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:30:59,991 INFO L93 Difference]: Finished difference Result 3204 states and 5694 transitions. [2023-12-16 00:30:59,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 00:30:59,992 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2023-12-16 00:30:59,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:31:00,017 INFO L225 Difference]: With dead ends: 3204 [2023-12-16 00:31:00,017 INFO L226 Difference]: Without dead ends: 2850 [2023-12-16 00:31:00,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-16 00:31:00,022 INFO L413 NwaCegarLoop]: 4210 mSDtfsCounter, 4688 mSDsluCounter, 16626 mSDsCounter, 0 mSdLazyCounter, 1822 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4700 SdHoareTripleChecker+Valid, 20836 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:31:00,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4700 Valid, 20836 Invalid, 1869 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 1822 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 00:31:00,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2850 states. [2023-12-16 00:31:00,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2850 to 2653. [2023-12-16 00:31:00,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2653 states, 2584 states have (on average 1.8165634674922602) internal successors, (4694), 2588 states have internal predecessors, (4694), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-12-16 00:31:00,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2653 states to 2653 states and 4793 transitions. [2023-12-16 00:31:00,130 INFO L78 Accepts]: Start accepts. Automaton has 2653 states and 4793 transitions. Word has length 91 [2023-12-16 00:31:00,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:31:00,137 INFO L495 AbstractCegarLoop]: Abstraction has 2653 states and 4793 transitions. [2023-12-16 00:31:00,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 00:31:00,137 INFO L276 IsEmpty]: Start isEmpty. Operand 2653 states and 4793 transitions. [2023-12-16 00:31:00,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-16 00:31:00,141 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:31:00,141 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:31:00,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 00:31:00,142 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:31:00,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:31:00,142 INFO L85 PathProgramCache]: Analyzing trace with hash 575111834, now seen corresponding path program 1 times [2023-12-16 00:31:00,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:31:00,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603131672] [2023-12-16 00:31:00,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:31:00,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:31:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:00,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:31:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:00,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 00:31:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:00,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 00:31:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:00,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 00:31:00,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:00,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 00:31:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:00,365 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 00:31:00,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:31:00,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603131672] [2023-12-16 00:31:00,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603131672] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:31:00,365 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 00:31:00,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128996370] [2023-12-16 00:31:00,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:31:00,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:31:00,366 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 00:31:00,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:31:00,367 INFO L87 Difference]: Start difference. First operand 2653 states and 4793 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 00:31:01,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:31:01,071 INFO L93 Difference]: Finished difference Result 3375 states and 5967 transitions. [2023-12-16 00:31:01,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 00:31:01,072 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2023-12-16 00:31:01,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:31:01,081 INFO L225 Difference]: With dead ends: 3375 [2023-12-16 00:31:01,081 INFO L226 Difference]: Without dead ends: 2854 [2023-12-16 00:31:01,083 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 00:31:01,084 INFO L413 NwaCegarLoop]: 4090 mSDtfsCounter, 4567 mSDsluCounter, 12183 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4580 SdHoareTripleChecker+Valid, 16273 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 00:31:01,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4580 Valid, 16273 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 00:31:01,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2023-12-16 00:31:01,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 2653. [2023-12-16 00:31:01,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2653 states, 2584 states have (on average 1.8154024767801857) internal successors, (4691), 2588 states have internal predecessors, (4691), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-12-16 00:31:01,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2653 states to 2653 states and 4790 transitions. [2023-12-16 00:31:01,137 INFO L78 Accepts]: Start accepts. Automaton has 2653 states and 4790 transitions. Word has length 91 [2023-12-16 00:31:01,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:31:01,137 INFO L495 AbstractCegarLoop]: Abstraction has 2653 states and 4790 transitions. [2023-12-16 00:31:01,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 00:31:01,137 INFO L276 IsEmpty]: Start isEmpty. Operand 2653 states and 4790 transitions. [2023-12-16 00:31:01,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-16 00:31:01,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:31:01,138 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:31:01,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 00:31:01,138 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:31:01,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:31:01,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1462334680, now seen corresponding path program 1 times [2023-12-16 00:31:01,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:31:01,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224942468] [2023-12-16 00:31:01,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:31:01,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:31:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:01,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:31:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:01,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 00:31:01,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:01,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 00:31:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:01,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 00:31:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:01,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 00:31:01,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:01,274 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 00:31:01,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:31:01,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224942468] [2023-12-16 00:31:01,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224942468] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:31:01,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:31:01,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:31:01,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465135981] [2023-12-16 00:31:01,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:31:01,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:31:01,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:31:01,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:31:01,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:31:01,284 INFO L87 Difference]: Start difference. First operand 2653 states and 4790 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 00:31:02,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:31:02,063 INFO L93 Difference]: Finished difference Result 3371 states and 5950 transitions. [2023-12-16 00:31:02,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 00:31:02,063 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2023-12-16 00:31:02,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:31:02,074 INFO L225 Difference]: With dead ends: 3371 [2023-12-16 00:31:02,074 INFO L226 Difference]: Without dead ends: 2850 [2023-12-16 00:31:02,078 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 00:31:02,079 INFO L413 NwaCegarLoop]: 4090 mSDtfsCounter, 4490 mSDsluCounter, 16226 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4503 SdHoareTripleChecker+Valid, 20316 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 00:31:02,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4503 Valid, 20316 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 00:31:02,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2850 states. [2023-12-16 00:31:02,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2850 to 2653. [2023-12-16 00:31:02,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2653 states, 2584 states have (on average 1.8142414860681115) internal successors, (4688), 2588 states have internal predecessors, (4688), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-12-16 00:31:02,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2653 states to 2653 states and 4787 transitions. [2023-12-16 00:31:02,150 INFO L78 Accepts]: Start accepts. Automaton has 2653 states and 4787 transitions. Word has length 91 [2023-12-16 00:31:02,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:31:02,151 INFO L495 AbstractCegarLoop]: Abstraction has 2653 states and 4787 transitions. [2023-12-16 00:31:02,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 00:31:02,151 INFO L276 IsEmpty]: Start isEmpty. Operand 2653 states and 4787 transitions. [2023-12-16 00:31:02,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-16 00:31:02,152 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:31:02,152 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:31:02,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 00:31:02,153 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:31:02,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:31:02,153 INFO L85 PathProgramCache]: Analyzing trace with hash -448707878, now seen corresponding path program 1 times [2023-12-16 00:31:02,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:31:02,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358993314] [2023-12-16 00:31:02,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:31:02,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:31:02,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:02,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:31:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:02,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 00:31:02,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:02,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 00:31:02,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:02,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 00:31:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:02,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 00:31:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:02,261 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 00:31:02,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:31:02,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358993314] [2023-12-16 00:31:02,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358993314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:31:02,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:31:02,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:31:02,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53308574] [2023-12-16 00:31:02,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:31:02,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:31:02,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:31:02,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:31:02,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:31:02,263 INFO L87 Difference]: Start difference. First operand 2653 states and 4787 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 00:31:02,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:31:02,895 INFO L93 Difference]: Finished difference Result 3367 states and 5933 transitions. [2023-12-16 00:31:02,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 00:31:02,896 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2023-12-16 00:31:02,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:31:02,904 INFO L225 Difference]: With dead ends: 3367 [2023-12-16 00:31:02,904 INFO L226 Difference]: Without dead ends: 2846 [2023-12-16 00:31:02,906 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 00:31:02,908 INFO L413 NwaCegarLoop]: 4090 mSDtfsCounter, 4488 mSDsluCounter, 16226 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4501 SdHoareTripleChecker+Valid, 20316 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 00:31:02,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4501 Valid, 20316 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 00:31:02,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2023-12-16 00:31:02,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 2653. [2023-12-16 00:31:02,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2653 states, 2584 states have (on average 1.813080495356037) internal successors, (4685), 2588 states have internal predecessors, (4685), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-12-16 00:31:02,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2653 states to 2653 states and 4784 transitions. [2023-12-16 00:31:02,965 INFO L78 Accepts]: Start accepts. Automaton has 2653 states and 4784 transitions. Word has length 91 [2023-12-16 00:31:02,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:31:02,965 INFO L495 AbstractCegarLoop]: Abstraction has 2653 states and 4784 transitions. [2023-12-16 00:31:02,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 00:31:02,965 INFO L276 IsEmpty]: Start isEmpty. Operand 2653 states and 4784 transitions. [2023-12-16 00:31:02,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-16 00:31:02,966 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:31:02,966 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:31:02,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 00:31:02,966 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:31:02,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:31:02,966 INFO L85 PathProgramCache]: Analyzing trace with hash -371807080, now seen corresponding path program 1 times [2023-12-16 00:31:02,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:31:02,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242706701] [2023-12-16 00:31:02,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:31:02,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:31:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:03,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:31:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:03,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 00:31:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:03,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 00:31:03,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:03,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 00:31:03,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:03,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 00:31:03,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:03,084 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 00:31:03,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:31:03,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242706701] [2023-12-16 00:31:03,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242706701] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:31:03,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:31:03,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:31:03,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340453118] [2023-12-16 00:31:03,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:31:03,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:31:03,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:31:03,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:31:03,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:31:03,085 INFO L87 Difference]: Start difference. First operand 2653 states and 4784 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 00:31:04,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:31:04,263 INFO L93 Difference]: Finished difference Result 3949 states and 6833 transitions. [2023-12-16 00:31:04,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 00:31:04,263 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2023-12-16 00:31:04,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:31:04,273 INFO L225 Difference]: With dead ends: 3949 [2023-12-16 00:31:04,274 INFO L226 Difference]: Without dead ends: 3428 [2023-12-16 00:31:04,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-16 00:31:04,277 INFO L413 NwaCegarLoop]: 4114 mSDtfsCounter, 4898 mSDsluCounter, 16369 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4916 SdHoareTripleChecker+Valid, 20483 SdHoareTripleChecker+Invalid, 1522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 00:31:04,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4916 Valid, 20483 Invalid, 1522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 00:31:04,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3428 states. [2023-12-16 00:31:04,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3428 to 2996. [2023-12-16 00:31:04,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2996 states, 2887 states have (on average 1.7852441981295462) internal successors, (5154), 2893 states have internal predecessors, (5154), 73 states have call successors, (73), 30 states have call predecessors, (73), 34 states have return successors, (86), 76 states have call predecessors, (86), 73 states have call successors, (86) [2023-12-16 00:31:04,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2996 states to 2996 states and 5313 transitions. [2023-12-16 00:31:04,355 INFO L78 Accepts]: Start accepts. Automaton has 2996 states and 5313 transitions. Word has length 91 [2023-12-16 00:31:04,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:31:04,356 INFO L495 AbstractCegarLoop]: Abstraction has 2996 states and 5313 transitions. [2023-12-16 00:31:04,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 00:31:04,356 INFO L276 IsEmpty]: Start isEmpty. Operand 2996 states and 5313 transitions. [2023-12-16 00:31:04,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-16 00:31:04,357 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:31:04,357 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:31:04,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 00:31:04,358 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:31:04,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:31:04,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1339157734, now seen corresponding path program 1 times [2023-12-16 00:31:04,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:31:04,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134180623] [2023-12-16 00:31:04,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:31:04,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:31:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:04,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:31:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:04,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 00:31:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:04,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 00:31:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:04,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 00:31:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:04,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 00:31:04,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:04,472 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 00:31:04,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:31:04,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134180623] [2023-12-16 00:31:04,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134180623] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:31:04,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:31:04,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:31:04,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535595549] [2023-12-16 00:31:04,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:31:04,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:31:04,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:31:04,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:31:04,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:31:04,474 INFO L87 Difference]: Start difference. First operand 2996 states and 5313 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 00:31:06,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:31:06,146 INFO L93 Difference]: Finished difference Result 5232 states and 8832 transitions. [2023-12-16 00:31:06,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 00:31:06,146 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2023-12-16 00:31:06,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:31:06,173 INFO L225 Difference]: With dead ends: 5232 [2023-12-16 00:31:06,173 INFO L226 Difference]: Without dead ends: 4368 [2023-12-16 00:31:06,177 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 00:31:06,178 INFO L413 NwaCegarLoop]: 4205 mSDtfsCounter, 4697 mSDsluCounter, 16618 mSDsCounter, 0 mSdLazyCounter, 1987 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4708 SdHoareTripleChecker+Valid, 20823 SdHoareTripleChecker+Invalid, 2038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-16 00:31:06,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4708 Valid, 20823 Invalid, 2038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1987 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-16 00:31:06,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4368 states. [2023-12-16 00:31:06,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4368 to 3653. [2023-12-16 00:31:06,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3653 states, 3466 states have (on average 1.7443739180611657) internal successors, (6046), 3476 states have internal predecessors, (6046), 123 states have call successors, (123), 54 states have call predecessors, (123), 62 states have return successors, (158), 130 states have call predecessors, (158), 123 states have call successors, (158) [2023-12-16 00:31:06,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3653 states to 3653 states and 6327 transitions. [2023-12-16 00:31:06,262 INFO L78 Accepts]: Start accepts. Automaton has 3653 states and 6327 transitions. Word has length 91 [2023-12-16 00:31:06,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:31:06,263 INFO L495 AbstractCegarLoop]: Abstraction has 3653 states and 6327 transitions. [2023-12-16 00:31:06,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 00:31:06,263 INFO L276 IsEmpty]: Start isEmpty. Operand 3653 states and 6327 transitions. [2023-12-16 00:31:06,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-16 00:31:06,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:31:06,265 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:31:06,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 00:31:06,265 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:31:06,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:31:06,266 INFO L85 PathProgramCache]: Analyzing trace with hash 569300056, now seen corresponding path program 1 times [2023-12-16 00:31:06,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:31:06,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886639442] [2023-12-16 00:31:06,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:31:06,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:31:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:06,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:31:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:06,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 00:31:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:06,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 00:31:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:06,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 00:31:06,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:06,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 00:31:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:06,377 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 00:31:06,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:31:06,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886639442] [2023-12-16 00:31:06,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886639442] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:31:06,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:31:06,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:31:06,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513863925] [2023-12-16 00:31:06,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:31:06,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:31:06,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:31:06,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:31:06,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:31:06,378 INFO L87 Difference]: Start difference. First operand 3653 states and 6327 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 00:31:07,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:31:07,986 INFO L93 Difference]: Finished difference Result 7675 states and 12640 transitions. [2023-12-16 00:31:07,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 00:31:07,987 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2023-12-16 00:31:07,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:31:08,000 INFO L225 Difference]: With dead ends: 7675 [2023-12-16 00:31:08,000 INFO L226 Difference]: Without dead ends: 6154 [2023-12-16 00:31:08,005 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 00:31:08,005 INFO L413 NwaCegarLoop]: 4206 mSDtfsCounter, 4778 mSDsluCounter, 16621 mSDsCounter, 0 mSdLazyCounter, 1690 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4796 SdHoareTripleChecker+Valid, 20827 SdHoareTripleChecker+Invalid, 1742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 00:31:08,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4796 Valid, 20827 Invalid, 1742 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 1690 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 00:31:08,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6154 states. [2023-12-16 00:31:08,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6154 to 4986. [2023-12-16 00:31:08,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4986 states, 4647 states have (on average 1.6931353561437485) internal successors, (7868), 4665 states have internal predecessors, (7868), 219 states have call successors, (219), 102 states have call predecessors, (219), 118 states have return successors, (316), 234 states have call predecessors, (316), 219 states have call successors, (316) [2023-12-16 00:31:08,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4986 states to 4986 states and 8403 transitions. [2023-12-16 00:31:08,126 INFO L78 Accepts]: Start accepts. Automaton has 4986 states and 8403 transitions. Word has length 91 [2023-12-16 00:31:08,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:31:08,126 INFO L495 AbstractCegarLoop]: Abstraction has 4986 states and 8403 transitions. [2023-12-16 00:31:08,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 00:31:08,126 INFO L276 IsEmpty]: Start isEmpty. Operand 4986 states and 8403 transitions. [2023-12-16 00:31:08,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-16 00:31:08,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:31:08,128 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:31:08,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 00:31:08,129 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:31:08,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:31:08,129 INFO L85 PathProgramCache]: Analyzing trace with hash 76673882, now seen corresponding path program 1 times [2023-12-16 00:31:08,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:31:08,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738717578] [2023-12-16 00:31:08,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:31:08,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:31:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:08,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:31:08,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:08,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 00:31:08,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:08,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 00:31:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:08,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 00:31:08,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:08,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 00:31:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:08,251 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 00:31:08,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:31:08,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738717578] [2023-12-16 00:31:08,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738717578] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:31:08,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:31:08,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:31:08,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628773866] [2023-12-16 00:31:08,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:31:08,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:31:08,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:31:08,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:31:08,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:31:08,253 INFO L87 Difference]: Start difference. First operand 4986 states and 8403 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 00:31:09,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:31:09,763 INFO L93 Difference]: Finished difference Result 12494 states and 20210 transitions. [2023-12-16 00:31:09,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 00:31:09,764 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2023-12-16 00:31:09,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:31:09,789 INFO L225 Difference]: With dead ends: 12494 [2023-12-16 00:31:09,789 INFO L226 Difference]: Without dead ends: 9640 [2023-12-16 00:31:09,801 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 00:31:09,801 INFO L413 NwaCegarLoop]: 4206 mSDtfsCounter, 4748 mSDsluCounter, 16621 mSDsCounter, 0 mSdLazyCounter, 1672 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4766 SdHoareTripleChecker+Valid, 20827 SdHoareTripleChecker+Invalid, 1724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:31:09,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4766 Valid, 20827 Invalid, 1724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1672 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 00:31:09,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9640 states. [2023-12-16 00:31:10,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9640 to 7651. [2023-12-16 00:31:10,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7651 states, 7016 states have (on average 1.6428164196123147) internal successors, (11526), 7050 states have internal predecessors, (11526), 403 states have call successors, (403), 198 states have call predecessors, (403), 230 states have return successors, (678), 434 states have call predecessors, (678), 403 states have call successors, (678) [2023-12-16 00:31:10,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7651 states to 7651 states and 12607 transitions. [2023-12-16 00:31:10,027 INFO L78 Accepts]: Start accepts. Automaton has 7651 states and 12607 transitions. Word has length 91 [2023-12-16 00:31:10,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:31:10,028 INFO L495 AbstractCegarLoop]: Abstraction has 7651 states and 12607 transitions. [2023-12-16 00:31:10,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 00:31:10,028 INFO L276 IsEmpty]: Start isEmpty. Operand 7651 states and 12607 transitions. [2023-12-16 00:31:10,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-16 00:31:10,032 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:31:10,033 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:31:10,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 00:31:10,033 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:31:10,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:31:10,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1030614040, now seen corresponding path program 1 times [2023-12-16 00:31:10,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:31:10,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275321963] [2023-12-16 00:31:10,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:31:10,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:31:10,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:10,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:31:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:10,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 00:31:10,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:10,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 00:31:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:10,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 00:31:10,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:10,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 00:31:10,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:10,131 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 00:31:10,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:31:10,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275321963] [2023-12-16 00:31:10,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275321963] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:31:10,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:31:10,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:31:10,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995066426] [2023-12-16 00:31:10,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:31:10,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:31:10,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:31:10,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:31:10,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:31:10,133 INFO L87 Difference]: Start difference. First operand 7651 states and 12607 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 00:31:11,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:31:11,797 INFO L93 Difference]: Finished difference Result 21475 states and 34508 transitions. [2023-12-16 00:31:11,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 00:31:11,798 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2023-12-16 00:31:11,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:31:11,843 INFO L225 Difference]: With dead ends: 21475 [2023-12-16 00:31:11,844 INFO L226 Difference]: Without dead ends: 15956 [2023-12-16 00:31:11,861 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 00:31:11,861 INFO L413 NwaCegarLoop]: 4206 mSDtfsCounter, 4670 mSDsluCounter, 16621 mSDsCounter, 0 mSdLazyCounter, 1643 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4688 SdHoareTripleChecker+Valid, 20827 SdHoareTripleChecker+Invalid, 1696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 00:31:11,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4688 Valid, 20827 Invalid, 1696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1643 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 00:31:11,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15956 states. [2023-12-16 00:31:12,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15956 to 13013. [2023-12-16 00:31:12,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13013 states, 11802 states have (on average 1.6046432807998645) internal successors, (18938), 11868 states have internal predecessors, (18938), 755 states have call successors, (755), 390 states have call predecessors, (755), 454 states have return successors, (1548), 818 states have call predecessors, (1548), 755 states have call successors, (1548) [2023-12-16 00:31:12,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13013 states to 13013 states and 21241 transitions. [2023-12-16 00:31:12,254 INFO L78 Accepts]: Start accepts. Automaton has 13013 states and 21241 transitions. Word has length 91 [2023-12-16 00:31:12,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:31:12,254 INFO L495 AbstractCegarLoop]: Abstraction has 13013 states and 21241 transitions. [2023-12-16 00:31:12,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 00:31:12,254 INFO L276 IsEmpty]: Start isEmpty. Operand 13013 states and 21241 transitions. [2023-12-16 00:31:12,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-16 00:31:12,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:31:12,262 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:31:12,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 00:31:12,262 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:31:12,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:31:12,262 INFO L85 PathProgramCache]: Analyzing trace with hash 298646614, now seen corresponding path program 1 times [2023-12-16 00:31:12,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:31:12,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815275756] [2023-12-16 00:31:12,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:31:12,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:31:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:12,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:31:12,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:12,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 00:31:12,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:12,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 00:31:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:12,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 00:31:12,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:12,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 00:31:12,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:12,351 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 00:31:12,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:31:12,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815275756] [2023-12-16 00:31:12,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815275756] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:31:12,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:31:12,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 00:31:12,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212319747] [2023-12-16 00:31:12,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:31:12,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 00:31:12,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:31:12,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 00:31:12,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 00:31:12,353 INFO L87 Difference]: Start difference. First operand 13013 states and 21241 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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 00:31:13,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:31:13,932 INFO L93 Difference]: Finished difference Result 33124 states and 53179 transitions. [2023-12-16 00:31:13,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 00:31:13,933 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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 91 [2023-12-16 00:31:13,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:31:13,986 INFO L225 Difference]: With dead ends: 33124 [2023-12-16 00:31:13,987 INFO L226 Difference]: Without dead ends: 22244 [2023-12-16 00:31:14,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-16 00:31:14,017 INFO L413 NwaCegarLoop]: 4249 mSDtfsCounter, 4875 mSDsluCounter, 12381 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4906 SdHoareTripleChecker+Valid, 16630 SdHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 00:31:14,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4906 Valid, 16630 Invalid, 1543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 00:31:14,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22244 states. [2023-12-16 00:31:14,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22244 to 18457. [2023-12-16 00:31:14,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18457 states, 16617 states have (on average 1.5798278871035687) internal successors, (26252), 16748 states have internal predecessors, (26252), 1154 states have call successors, (1154), 588 states have call predecessors, (1154), 684 states have return successors, (2191), 1184 states have call predecessors, (2191), 1154 states have call successors, (2191) [2023-12-16 00:31:14,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18457 states to 18457 states and 29597 transitions. [2023-12-16 00:31:14,694 INFO L78 Accepts]: Start accepts. Automaton has 18457 states and 29597 transitions. Word has length 91 [2023-12-16 00:31:14,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:31:14,694 INFO L495 AbstractCegarLoop]: Abstraction has 18457 states and 29597 transitions. [2023-12-16 00:31:14,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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 00:31:14,694 INFO L276 IsEmpty]: Start isEmpty. Operand 18457 states and 29597 transitions. [2023-12-16 00:31:14,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-16 00:31:14,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:31:14,721 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:31:14,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 00:31:14,721 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:31:14,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:31:14,722 INFO L85 PathProgramCache]: Analyzing trace with hash -141768235, now seen corresponding path program 1 times [2023-12-16 00:31:14,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:31:14,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926337053] [2023-12-16 00:31:14,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:31:14,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:31:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:14,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:31:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:14,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 00:31:14,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:14,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 00:31:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:14,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 00:31:14,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:14,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 00:31:14,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:14,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 00:31:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:14,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:31:14,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:14,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 00:31:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:14,884 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 00:31:14,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:31:14,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926337053] [2023-12-16 00:31:14,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926337053] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:31:14,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138710348] [2023-12-16 00:31:14,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:31:14,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:31:14,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:31:14,887 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 00:31:14,892 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 00:31:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:15,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 00:31:15,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:31:15,105 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-16 00:31:15,105 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:31:15,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138710348] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:31:15,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 00:31:15,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-16 00:31:15,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986573054] [2023-12-16 00:31:15,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:31:15,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:31:15,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:31:15,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:31:15,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:31:15,107 INFO L87 Difference]: Start difference. First operand 18457 states and 29597 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 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 00:31:16,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:31:16,062 INFO L93 Difference]: Finished difference Result 50706 states and 80639 transitions. [2023-12-16 00:31:16,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:31:16,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 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 147 [2023-12-16 00:31:16,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:31:16,149 INFO L225 Difference]: With dead ends: 50706 [2023-12-16 00:31:16,149 INFO L226 Difference]: Without dead ends: 34382 [2023-12-16 00:31:16,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 162 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 00:31:16,183 INFO L413 NwaCegarLoop]: 4218 mSDtfsCounter, 4191 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4191 SdHoareTripleChecker+Valid, 4457 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:31:16,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4191 Valid, 4457 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:31:16,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34382 states. [2023-12-16 00:31:17,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34382 to 34282. [2023-12-16 00:31:17,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34282 states, 30710 states have (on average 1.557896450667535) internal successors, (47843), 30970 states have internal predecessors, (47843), 2204 states have call successors, (2204), 1174 states have call predecessors, (2204), 1366 states have return successors, (4215), 2201 states have call predecessors, (4215), 2204 states have call successors, (4215) [2023-12-16 00:31:17,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34282 states to 34282 states and 54262 transitions. [2023-12-16 00:31:17,301 INFO L78 Accepts]: Start accepts. Automaton has 34282 states and 54262 transitions. Word has length 147 [2023-12-16 00:31:17,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:31:17,301 INFO L495 AbstractCegarLoop]: Abstraction has 34282 states and 54262 transitions. [2023-12-16 00:31:17,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 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 00:31:17,301 INFO L276 IsEmpty]: Start isEmpty. Operand 34282 states and 54262 transitions. [2023-12-16 00:31:17,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-16 00:31:17,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:31:17,353 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:31:17,367 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 00:31:17,558 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,SelfDestructingSolverStorable12 [2023-12-16 00:31:17,558 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:31:17,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:31:17,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1606749997, now seen corresponding path program 1 times [2023-12-16 00:31:17,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:31:17,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754909894] [2023-12-16 00:31:17,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:31:17,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:31:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:17,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:31:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:17,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 00:31:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:17,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 00:31:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:17,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 00:31:17,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:17,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 00:31:17,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:17,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 00:31:17,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:17,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:31:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:17,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 00:31:17,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:17,687 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 00:31:17,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:31:17,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754909894] [2023-12-16 00:31:17,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754909894] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:31:17,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808155665] [2023-12-16 00:31:17,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:31:17,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:31:17,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:31:17,689 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 00:31:17,716 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 00:31:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:17,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 00:31:17,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:31:17,878 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-16 00:31:17,878 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:31:17,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808155665] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:31:17,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 00:31:17,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-16 00:31:17,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882074481] [2023-12-16 00:31:17,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:31:17,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:31:17,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:31:17,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:31:17,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:31:17,882 INFO L87 Difference]: Start difference. First operand 34282 states and 54262 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 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 00:31:19,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:31:19,753 INFO L93 Difference]: Finished difference Result 97981 states and 154794 transitions. [2023-12-16 00:31:19,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:31:19,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 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 147 [2023-12-16 00:31:19,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:31:19,980 INFO L225 Difference]: With dead ends: 97981 [2023-12-16 00:31:19,980 INFO L226 Difference]: Without dead ends: 65832 [2023-12-16 00:31:20,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 162 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 00:31:20,037 INFO L413 NwaCegarLoop]: 4218 mSDtfsCounter, 4181 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4181 SdHoareTripleChecker+Valid, 4457 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:31:20,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4181 Valid, 4457 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:31:20,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65832 states. [2023-12-16 00:31:22,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65832 to 65634. [2023-12-16 00:31:22,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65634 states, 58600 states have (on average 1.543259385665529) internal successors, (90435), 59118 states have internal predecessors, (90435), 4302 states have call successors, (4302), 2346 states have call predecessors, (4302), 2730 states have return successors, (8261), 4233 states have call predecessors, (8261), 4302 states have call successors, (8261) [2023-12-16 00:31:22,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65634 states to 65634 states and 102998 transitions. [2023-12-16 00:31:22,539 INFO L78 Accepts]: Start accepts. Automaton has 65634 states and 102998 transitions. Word has length 147 [2023-12-16 00:31:22,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:31:22,540 INFO L495 AbstractCegarLoop]: Abstraction has 65634 states and 102998 transitions. [2023-12-16 00:31:22,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 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 00:31:22,540 INFO L276 IsEmpty]: Start isEmpty. Operand 65634 states and 102998 transitions. [2023-12-16 00:31:22,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-16 00:31:22,615 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:31:22,615 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:31:22,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-16 00:31:22,819 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,SelfDestructingSolverStorable13 [2023-12-16 00:31:22,820 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:31:22,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:31:22,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1004543313, now seen corresponding path program 1 times [2023-12-16 00:31:22,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:31:22,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908106400] [2023-12-16 00:31:22,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:31:22,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:31:22,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:22,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:31:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:22,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 00:31:22,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:22,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 00:31:22,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:22,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 00:31:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:22,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 00:31:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:22,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 00:31:22,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:22,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:31:22,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:22,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 00:31:22,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:22,939 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 00:31:22,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:31:22,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908106400] [2023-12-16 00:31:22,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908106400] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:31:22,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352788024] [2023-12-16 00:31:22,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:31:22,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:31:22,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:31:22,941 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 00:31:22,970 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 00:31:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:23,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 00:31:23,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:31:23,107 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-16 00:31:23,108 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:31:23,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352788024] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:31:23,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 00:31:23,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-16 00:31:23,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597084346] [2023-12-16 00:31:23,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:31:23,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:31:23,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:31:23,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:31:23,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:31:23,109 INFO L87 Difference]: Start difference. First operand 65634 states and 102998 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 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 00:31:26,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:31:26,828 INFO L93 Difference]: Finished difference Result 191433 states and 300920 transitions. [2023-12-16 00:31:26,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:31:26,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 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 147 [2023-12-16 00:31:26,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:31:27,354 INFO L225 Difference]: With dead ends: 191433 [2023-12-16 00:31:27,355 INFO L226 Difference]: Without dead ends: 127932 [2023-12-16 00:31:27,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 162 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 00:31:27,457 INFO L413 NwaCegarLoop]: 4218 mSDtfsCounter, 4196 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4196 SdHoareTripleChecker+Valid, 4457 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:31:27,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4196 Valid, 4457 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:31:27,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127932 states. [2023-12-16 00:31:31,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127932 to 127538. [2023-12-16 00:31:32,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127538 states, 113688 states have (on average 1.533486383787207) internal successors, (174339), 114722 states have internal predecessors, (174339), 8394 states have call successors, (8394), 4686 states have call predecessors, (8394), 5454 states have return successors, (16249), 8193 states have call predecessors, (16249), 8394 states have call successors, (16249) [2023-12-16 00:31:32,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127538 states to 127538 states and 198982 transitions. [2023-12-16 00:31:32,528 INFO L78 Accepts]: Start accepts. Automaton has 127538 states and 198982 transitions. Word has length 147 [2023-12-16 00:31:32,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:31:32,529 INFO L495 AbstractCegarLoop]: Abstraction has 127538 states and 198982 transitions. [2023-12-16 00:31:32,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 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 00:31:32,529 INFO L276 IsEmpty]: Start isEmpty. Operand 127538 states and 198982 transitions. [2023-12-16 00:31:32,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-16 00:31:32,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:31:32,657 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:31:32,662 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 00:31:32,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:31:32,861 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:31:32,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:31:32,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1502127379, now seen corresponding path program 1 times [2023-12-16 00:31:32,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:31:32,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469401620] [2023-12-16 00:31:32,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:31:32,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:31:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:32,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:31:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:32,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 00:31:32,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:32,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 00:31:32,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:32,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 00:31:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:32,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 00:31:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:32,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 00:31:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:32,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:31:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:32,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 00:31:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:32,979 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 00:31:32,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:31:32,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469401620] [2023-12-16 00:31:32,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469401620] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:31:32,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920390263] [2023-12-16 00:31:32,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:31:32,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:31:32,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:31:32,981 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:31:32,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 00:31:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:31:33,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 00:31:33,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:31:33,125 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-16 00:31:33,125 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:31:33,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920390263] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:31:33,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 00:31:33,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-16 00:31:33,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417108148] [2023-12-16 00:31:33,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:31:33,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:31:33,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:31:33,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:31:33,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:31:33,127 INFO L87 Difference]: Start difference. First operand 127538 states and 198982 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 00:31:40,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:31:40,824 INFO L93 Difference]: Finished difference Result 374301 states and 588521 transitions. [2023-12-16 00:31:40,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:31:40,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 147 [2023-12-16 00:31:40,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:31:42,099 INFO L225 Difference]: With dead ends: 374301 [2023-12-16 00:31:42,099 INFO L226 Difference]: Without dead ends: 248897 [2023-12-16 00:31:42,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 162 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 00:31:42,297 INFO L413 NwaCegarLoop]: 4462 mSDtfsCounter, 255 mSDsluCounter, 4220 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 8682 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:31:42,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 8682 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] Received shutdown request... [2023-12-16 00:31:42,352 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 00:31:42,362 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 00:31:42,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248897 states. [2023-12-16 00:31:42,510 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-16 00:31:42,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 00:31:42,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-16 00:31:42,714 WARN L619 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2023-12-16 00:31:42,716 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-16 00:31:42,718 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:31:42,720 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 00:31:42,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 12:31:42 BoogieIcfgContainer [2023-12-16 00:31:42,721 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 00:31:42,721 INFO L158 Benchmark]: Toolchain (without parser) took 56144.76ms. Allocated memory was 282.1MB in the beginning and 6.5GB in the end (delta: 6.2GB). Free memory was 203.9MB in the beginning and 4.7GB in the end (delta: -4.5GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. [2023-12-16 00:31:42,722 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 176.2MB. Free memory is still 125.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 00:31:42,722 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2338.12ms. Allocated memory is still 282.1MB. Free memory was 203.4MB in the beginning and 179.1MB in the end (delta: 24.3MB). Peak memory consumption was 168.0MB. Max. memory is 8.0GB. [2023-12-16 00:31:42,722 INFO L158 Benchmark]: Boogie Procedure Inliner took 267.36ms. Allocated memory is still 282.1MB. Free memory was 179.1MB in the beginning and 99.9MB in the end (delta: 79.2MB). Peak memory consumption was 77.6MB. Max. memory is 8.0GB. [2023-12-16 00:31:42,722 INFO L158 Benchmark]: Boogie Preprocessor took 651.29ms. Allocated memory was 282.1MB in the beginning and 537.9MB in the end (delta: 255.9MB). Free memory was 99.9MB in the beginning and 364.2MB in the end (delta: -264.2MB). Peak memory consumption was 98.6MB. Max. memory is 8.0GB. [2023-12-16 00:31:42,722 INFO L158 Benchmark]: RCFGBuilder took 5478.47ms. Allocated memory was 537.9MB in the beginning and 1.1GB in the end (delta: 537.9MB). Free memory was 364.2MB in the beginning and 680.3MB in the end (delta: -316.1MB). Peak memory consumption was 552.1MB. Max. memory is 8.0GB. [2023-12-16 00:31:42,722 INFO L158 Benchmark]: TraceAbstraction took 47403.91ms. Allocated memory was 1.1GB in the beginning and 6.5GB in the end (delta: 5.4GB). Free memory was 679.8MB in the beginning and 4.7GB in the end (delta: -4.0GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2023-12-16 00:31:42,723 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 176.2MB. Free memory is still 125.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 2338.12ms. Allocated memory is still 282.1MB. Free memory was 203.4MB in the beginning and 179.1MB in the end (delta: 24.3MB). Peak memory consumption was 168.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 267.36ms. Allocated memory is still 282.1MB. Free memory was 179.1MB in the beginning and 99.9MB in the end (delta: 79.2MB). Peak memory consumption was 77.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 651.29ms. Allocated memory was 282.1MB in the beginning and 537.9MB in the end (delta: 255.9MB). Free memory was 99.9MB in the beginning and 364.2MB in the end (delta: -264.2MB). Peak memory consumption was 98.6MB. Max. memory is 8.0GB. * RCFGBuilder took 5478.47ms. Allocated memory was 537.9MB in the beginning and 1.1GB in the end (delta: 537.9MB). Free memory was 364.2MB in the beginning and 680.3MB in the end (delta: -316.1MB). Peak memory consumption was 552.1MB. Max. memory is 8.0GB. * TraceAbstraction took 47403.91ms. Allocated memory was 1.1GB in the beginning and 6.5GB in the end (delta: 5.4GB). Free memory was 679.8MB in the beginning and 4.7GB in the end (delta: -4.0GB). Peak memory consumption was 1.8GB. 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 executing MinimizeSevpa. - TimeoutResultAtElement [Line: 11016]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 11016). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 2310 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 47.3s, OverallIterations: 16, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 31.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 65067 SdHoareTripleChecker+Valid, 10.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 64873 mSDsluCounter, 252774 SdHoareTripleChecker+Invalid, 8.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 185765 mSDsCounter, 710 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16213 IncrementalHoareTripleChecker+Invalid, 16923 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 710 mSolverCounterUnsat, 67009 mSDtfsCounter, 16213 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 971 GetRequests, 810 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127538occurred in iteration=15, InterpolantAutomatonStates: 148, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 10.9s AutomataMinimizationTime, 16 MinimizatonAttempts, 12693 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 2268 NumberOfCodeBlocks, 2268 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 2248 ConstructedInterpolants, 0 QuantifiedInterpolants, 5005 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2560 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 20 InterpolantComputations, 16 PerfectInterpolantSequences, 228/344 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