/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_label46+token_ring.03.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 11:34:10,459 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 11:34:10,525 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 11:34:10,530 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 11:34:10,531 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 11:34:10,555 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 11:34:10,555 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 11:34:10,556 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 11:34:10,556 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 11:34:10,559 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 11:34:10,559 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 11:34:10,560 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 11:34:10,560 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 11:34:10,561 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 11:34:10,561 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 11:34:10,561 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 11:34:10,561 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 11:34:10,562 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 11:34:10,562 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 11:34:10,563 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 11:34:10,563 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 11:34:10,563 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 11:34:10,563 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 11:34:10,563 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 11:34:10,563 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 11:34:10,564 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 11:34:10,564 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 11:34:10,564 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 11:34:10,564 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 11:34:10,565 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 11:34:10,565 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 11:34:10,565 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 11:34:10,565 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 11:34:10,566 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 11:34:10,566 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 11:34:10,566 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 11:34:10,566 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 11:34:10,566 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 11:34:10,566 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 11:34:10,566 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 11:34:10,566 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 11:34:10,567 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 11:34:10,567 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 11:34:10,567 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 11:34:10,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 11:34:10,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 11:34:10,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 11:34:10,785 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 11:34:10,785 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 11:34:10,786 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label46+token_ring.03.cil-2.c [2023-12-20 11:34:11,841 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 11:34:12,321 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 11:34:12,322 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label46+token_ring.03.cil-2.c [2023-12-20 11:34:12,379 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7851d8a4/6140bddb762547bfaf102d11f54bceb3/FLAG1aa1b397a [2023-12-20 11:34:12,393 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7851d8a4/6140bddb762547bfaf102d11f54bceb3 [2023-12-20 11:34:12,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 11:34:12,396 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 11:34:12,398 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 11:34:12,399 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 11:34:12,402 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 11:34:12,403 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 11:34:12" (1/1) ... [2023-12-20 11:34:12,403 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ec4cf18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:34:12, skipping insertion in model container [2023-12-20 11:34:12,404 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 11:34:12" (1/1) ... [2023-12-20 11:34:12,560 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 11:34:13,669 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_label46+token_ring.03.cil-2.c[382357,382370] [2023-12-20 11:34:13,689 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_label46+token_ring.03.cil-2.c[383339,383352] [2023-12-20 11:34:13,791 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 11:34:13,800 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 11:34:14,389 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_label46+token_ring.03.cil-2.c[382357,382370] [2023-12-20 11:34:14,392 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_label46+token_ring.03.cil-2.c[383339,383352] [2023-12-20 11:34:14,409 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 11:34:14,449 INFO L206 MainTranslator]: Completed translation [2023-12-20 11:34:14,449 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:34:14 WrapperNode [2023-12-20 11:34:14,449 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 11:34:14,451 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 11:34:14,451 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 11:34:14,451 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 11:34:14,455 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:34:14" (1/1) ... [2023-12-20 11:34:14,523 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:34:14" (1/1) ... [2023-12-20 11:34:14,733 INFO L138 Inliner]: procedures = 50, calls = 50, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 12693 [2023-12-20 11:34:14,734 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 11:34:14,735 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 11:34:14,735 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 11:34:14,735 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 11:34:14,742 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:34:14" (1/1) ... [2023-12-20 11:34:14,743 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:34:14" (1/1) ... [2023-12-20 11:34:14,784 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:34:14" (1/1) ... [2023-12-20 11:34:14,994 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]. [2023-12-20 11:34:14,994 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:34:14" (1/1) ... [2023-12-20 11:34:14,994 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:34:14" (1/1) ... [2023-12-20 11:34:15,176 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:34:14" (1/1) ... [2023-12-20 11:34:15,224 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:34:14" (1/1) ... [2023-12-20 11:34:15,250 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:34:14" (1/1) ... [2023-12-20 11:34:15,269 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:34:14" (1/1) ... [2023-12-20 11:34:15,318 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 11:34:15,319 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 11:34:15,319 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 11:34:15,319 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 11:34:15,320 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:34:14" (1/1) ... [2023-12-20 11:34:15,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 11:34:15,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:34:15,341 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) [2023-12-20 11:34:15,359 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 [2023-12-20 11:34:15,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 11:34:15,365 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-20 11:34:15,365 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-20 11:34:15,365 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-20 11:34:15,366 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-20 11:34:15,366 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-20 11:34:15,366 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-20 11:34:15,366 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-20 11:34:15,366 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-20 11:34:15,366 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-20 11:34:15,366 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-20 11:34:15,366 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-20 11:34:15,366 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-20 11:34:15,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 11:34:15,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 11:34:15,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 11:34:15,459 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 11:34:15,460 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 11:34:20,923 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 11:34:20,997 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 11:34:20,997 INFO L309 CfgBuilder]: Removed 7 assume(true) statements. [2023-12-20 11:34:20,997 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 11:34:20 BoogieIcfgContainer [2023-12-20 11:34:20,998 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 11:34:21,000 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 11:34:21,000 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 11:34:21,003 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 11:34:21,003 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 11:34:12" (1/3) ... [2023-12-20 11:34:21,004 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3001f16d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 11:34:21, skipping insertion in model container [2023-12-20 11:34:21,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:34:14" (2/3) ... [2023-12-20 11:34:21,004 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3001f16d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 11:34:21, skipping insertion in model container [2023-12-20 11:34:21,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 11:34:20" (3/3) ... [2023-12-20 11:34:21,005 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.03.cil-2.c [2023-12-20 11:34:21,021 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 11:34:21,022 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 11:34:21,085 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 11:34:21,090 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;@64217848, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 11:34:21,091 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 11:34:21,102 INFO L276 IsEmpty]: Start isEmpty. Operand has 2264 states, 2238 states have (on average 1.8847184986595173) internal successors, (4218), 2241 states have internal predecessors, (4218), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-20 11:34:21,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-20 11:34:21,111 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:34:21,112 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] [2023-12-20 11:34:21,112 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:34:21,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:34:21,116 INFO L85 PathProgramCache]: Analyzing trace with hash 823068321, now seen corresponding path program 1 times [2023-12-20 11:34:21,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:34:21,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525677135] [2023-12-20 11:34:21,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:34:21,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:34:21,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:21,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:34:21,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:21,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:34:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:21,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:34:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:21,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:34:21,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:21,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:34:21,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:21,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:34:21,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:34:21,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525677135] [2023-12-20 11:34:21,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525677135] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:34:21,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:34:21,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 11:34:21,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864157043] [2023-12-20 11:34:21,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:34:21,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 11:34:21,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:34:21,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 11:34:21,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 11:34:21,520 INFO L87 Difference]: Start difference. First operand has 2264 states, 2238 states have (on average 1.8847184986595173) internal successors, (4218), 2241 states have internal predecessors, (4218), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 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) [2023-12-20 11:34:22,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:34:22,471 INFO L93 Difference]: Finished difference Result 4732 states and 8845 transitions. [2023-12-20 11:34:22,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 11:34:22,473 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 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 71 [2023-12-20 11:34:22,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:34:22,490 INFO L225 Difference]: With dead ends: 4732 [2023-12-20 11:34:22,490 INFO L226 Difference]: Without dead ends: 2471 [2023-12-20 11:34:22,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-20 11:34:22,499 INFO L413 NwaCegarLoop]: 4074 mSDtfsCounter, 4459 mSDsluCounter, 12195 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4469 SdHoareTripleChecker+Valid, 16269 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 11:34:22,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4469 Valid, 16269 Invalid, 864 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 11:34:22,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2023-12-20 11:34:22,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 2392. [2023-12-20 11:34:22,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2392 states, 2348 states have (on average 1.8373083475298126) internal successors, (4314), 2351 states have internal predecessors, (4314), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) [2023-12-20 11:34:22,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2392 states to 2392 states and 4375 transitions. [2023-12-20 11:34:22,766 INFO L78 Accepts]: Start accepts. Automaton has 2392 states and 4375 transitions. Word has length 71 [2023-12-20 11:34:22,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:34:22,766 INFO L495 AbstractCegarLoop]: Abstraction has 2392 states and 4375 transitions. [2023-12-20 11:34:22,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 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) [2023-12-20 11:34:22,766 INFO L276 IsEmpty]: Start isEmpty. Operand 2392 states and 4375 transitions. [2023-12-20 11:34:22,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-20 11:34:22,768 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:34:22,768 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] [2023-12-20 11:34:22,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 11:34:22,769 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:34:22,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:34:22,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1524316709, now seen corresponding path program 1 times [2023-12-20 11:34:22,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:34:22,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644905441] [2023-12-20 11:34:22,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:34:22,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:34:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:22,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:34:22,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:22,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:34:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:22,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:34:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:22,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:34:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:22,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:34:22,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:22,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:34:22,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:34:22,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644905441] [2023-12-20 11:34:22,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644905441] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:34:22,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:34:22,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:34:22,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116192087] [2023-12-20 11:34:22,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:34:22,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:34:22,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:34:22,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:34:22,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:34:22,985 INFO L87 Difference]: Start difference. First operand 2392 states and 4375 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-12-20 11:34:24,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:34:24,043 INFO L93 Difference]: Finished difference Result 2906 states and 5181 transitions. [2023-12-20 11:34:24,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:34:24,044 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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 71 [2023-12-20 11:34:24,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:34:24,052 INFO L225 Difference]: With dead ends: 2906 [2023-12-20 11:34:24,053 INFO L226 Difference]: Without dead ends: 2644 [2023-12-20 11:34:24,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 11:34:24,055 INFO L413 NwaCegarLoop]: 4151 mSDtfsCounter, 4453 mSDsluCounter, 16419 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4463 SdHoareTripleChecker+Valid, 20570 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 11:34:24,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4463 Valid, 20570 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 11:34:24,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2023-12-20 11:34:24,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 2515. [2023-12-20 11:34:24,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2515 states, 2452 states have (on average 1.8242251223491028) internal successors, (4473), 2456 states have internal predecessors, (4473), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2023-12-20 11:34:24,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2515 states to 2515 states and 4560 transitions. [2023-12-20 11:34:24,103 INFO L78 Accepts]: Start accepts. Automaton has 2515 states and 4560 transitions. Word has length 71 [2023-12-20 11:34:24,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:34:24,104 INFO L495 AbstractCegarLoop]: Abstraction has 2515 states and 4560 transitions. [2023-12-20 11:34:24,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-12-20 11:34:24,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2515 states and 4560 transitions. [2023-12-20 11:34:24,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-20 11:34:24,106 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:34:24,106 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] [2023-12-20 11:34:24,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 11:34:24,106 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:34:24,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:34:24,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1958045795, now seen corresponding path program 1 times [2023-12-20 11:34:24,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:34:24,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447131570] [2023-12-20 11:34:24,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:34:24,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:34:24,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:24,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:34:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:24,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:34:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:24,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:34:24,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:24,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:34:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:24,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:34:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:24,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:34:24,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:34:24,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447131570] [2023-12-20 11:34:24,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447131570] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:34:24,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:34:24,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:34:24,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580704804] [2023-12-20 11:34:24,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:34:24,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:34:24,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:34:24,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:34:24,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:34:24,212 INFO L87 Difference]: Start difference. First operand 2515 states and 4560 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-12-20 11:34:25,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:34:25,126 INFO L93 Difference]: Finished difference Result 3352 states and 5868 transitions. [2023-12-20 11:34:25,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:34:25,126 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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 71 [2023-12-20 11:34:25,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:34:25,139 INFO L225 Difference]: With dead ends: 3352 [2023-12-20 11:34:25,139 INFO L226 Difference]: Without dead ends: 2967 [2023-12-20 11:34:25,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 11:34:25,146 INFO L413 NwaCegarLoop]: 4149 mSDtfsCounter, 4451 mSDsluCounter, 16419 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4461 SdHoareTripleChecker+Valid, 20568 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 11:34:25,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4461 Valid, 20568 Invalid, 1327 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 11:34:25,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2023-12-20 11:34:25,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 2762. [2023-12-20 11:34:25,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2762 states, 2661 states have (on average 1.8008267568583238) internal successors, (4792), 2667 states have internal predecessors, (4792), 65 states have call successors, (65), 30 states have call predecessors, (65), 34 states have return successors, (78), 68 states have call predecessors, (78), 65 states have call successors, (78) [2023-12-20 11:34:25,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2762 states to 2762 states and 4935 transitions. [2023-12-20 11:34:25,247 INFO L78 Accepts]: Start accepts. Automaton has 2762 states and 4935 transitions. Word has length 71 [2023-12-20 11:34:25,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:34:25,248 INFO L495 AbstractCegarLoop]: Abstraction has 2762 states and 4935 transitions. [2023-12-20 11:34:25,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-12-20 11:34:25,248 INFO L276 IsEmpty]: Start isEmpty. Operand 2762 states and 4935 transitions. [2023-12-20 11:34:25,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-20 11:34:25,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:34:25,253 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] [2023-12-20 11:34:25,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 11:34:25,254 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:34:25,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:34:25,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1076004251, now seen corresponding path program 1 times [2023-12-20 11:34:25,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:34:25,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878065589] [2023-12-20 11:34:25,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:34:25,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:34:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:25,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:34:25,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:25,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:34:25,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:25,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:34:25,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:25,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:34:25,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:25,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:34:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:25,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:34:25,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:34:25,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878065589] [2023-12-20 11:34:25,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878065589] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:34:25,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:34:25,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:34:25,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693233157] [2023-12-20 11:34:25,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:34:25,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:34:25,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:34:25,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:34:25,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:34:25,396 INFO L87 Difference]: Start difference. First operand 2762 states and 4935 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-12-20 11:34:25,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:34:25,943 INFO L93 Difference]: Finished difference Result 3589 states and 6236 transitions. [2023-12-20 11:34:25,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:34:25,944 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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 71 [2023-12-20 11:34:25,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:34:25,956 INFO L225 Difference]: With dead ends: 3589 [2023-12-20 11:34:25,957 INFO L226 Difference]: Without dead ends: 2957 [2023-12-20 11:34:25,960 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 [2023-12-20 11:34:25,961 INFO L413 NwaCegarLoop]: 4057 mSDtfsCounter, 4387 mSDsluCounter, 12099 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4398 SdHoareTripleChecker+Valid, 16156 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 11:34:25,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4398 Valid, 16156 Invalid, 636 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 11:34:25,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2023-12-20 11:34:26,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 2762. [2023-12-20 11:34:26,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2762 states, 2661 states have (on average 1.7989477639984968) internal successors, (4787), 2667 states have internal predecessors, (4787), 65 states have call successors, (65), 30 states have call predecessors, (65), 34 states have return successors, (78), 68 states have call predecessors, (78), 65 states have call successors, (78) [2023-12-20 11:34:26,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2762 states to 2762 states and 4930 transitions. [2023-12-20 11:34:26,036 INFO L78 Accepts]: Start accepts. Automaton has 2762 states and 4930 transitions. Word has length 71 [2023-12-20 11:34:26,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:34:26,037 INFO L495 AbstractCegarLoop]: Abstraction has 2762 states and 4930 transitions. [2023-12-20 11:34:26,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-12-20 11:34:26,037 INFO L276 IsEmpty]: Start isEmpty. Operand 2762 states and 4930 transitions. [2023-12-20 11:34:26,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-20 11:34:26,038 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:34:26,038 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] [2023-12-20 11:34:26,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 11:34:26,038 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:34:26,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:34:26,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1035329501, now seen corresponding path program 1 times [2023-12-20 11:34:26,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:34:26,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785920081] [2023-12-20 11:34:26,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:34:26,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:34:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:26,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:34:26,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:26,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:34:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:26,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:34:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:26,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:34:26,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:26,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:34:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:26,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:34:26,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:34:26,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785920081] [2023-12-20 11:34:26,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785920081] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:34:26,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:34:26,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:34:26,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212678035] [2023-12-20 11:34:26,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:34:26,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:34:26,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:34:26,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:34:26,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:34:26,132 INFO L87 Difference]: Start difference. First operand 2762 states and 4930 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-12-20 11:34:27,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:34:27,059 INFO L93 Difference]: Finished difference Result 4380 states and 7425 transitions. [2023-12-20 11:34:27,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:34:27,060 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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 71 [2023-12-20 11:34:27,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:34:27,072 INFO L225 Difference]: With dead ends: 4380 [2023-12-20 11:34:27,072 INFO L226 Difference]: Without dead ends: 3748 [2023-12-20 11:34:27,074 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 [2023-12-20 11:34:27,075 INFO L413 NwaCegarLoop]: 4147 mSDtfsCounter, 4558 mSDsluCounter, 16414 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4572 SdHoareTripleChecker+Valid, 20561 SdHoareTripleChecker+Invalid, 1287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 11:34:27,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4572 Valid, 20561 Invalid, 1287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 11:34:27,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3748 states. [2023-12-20 11:34:27,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3748 to 3253. [2023-12-20 11:34:27,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3253 states, 3080 states have (on average 1.7603896103896104) internal successors, (5422), 3090 states have internal predecessors, (5422), 109 states have call successors, (109), 54 states have call predecessors, (109), 62 states have return successors, (144), 116 states have call predecessors, (144), 109 states have call successors, (144) [2023-12-20 11:34:27,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3253 states to 3253 states and 5675 transitions. [2023-12-20 11:34:27,160 INFO L78 Accepts]: Start accepts. Automaton has 3253 states and 5675 transitions. Word has length 71 [2023-12-20 11:34:27,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:34:27,161 INFO L495 AbstractCegarLoop]: Abstraction has 3253 states and 5675 transitions. [2023-12-20 11:34:27,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-12-20 11:34:27,161 INFO L276 IsEmpty]: Start isEmpty. Operand 3253 states and 5675 transitions. [2023-12-20 11:34:27,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-20 11:34:27,162 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:34:27,162 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] [2023-12-20 11:34:27,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 11:34:27,163 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:34:27,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:34:27,163 INFO L85 PathProgramCache]: Analyzing trace with hash 351455909, now seen corresponding path program 1 times [2023-12-20 11:34:27,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:34:27,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063650024] [2023-12-20 11:34:27,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:34:27,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:34:27,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:27,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:34:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:27,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:34:27,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:27,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:34:27,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:27,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:34:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:27,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:34:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:27,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:34:27,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:34:27,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063650024] [2023-12-20 11:34:27,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063650024] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:34:27,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:34:27,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:34:27,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334211390] [2023-12-20 11:34:27,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:34:27,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:34:27,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:34:27,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:34:27,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:34:27,284 INFO L87 Difference]: Start difference. First operand 3253 states and 5675 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-12-20 11:34:28,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:34:28,242 INFO L93 Difference]: Finished difference Result 6161 states and 10154 transitions. [2023-12-20 11:34:28,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:34:28,243 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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 71 [2023-12-20 11:34:28,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:34:28,260 INFO L225 Difference]: With dead ends: 6161 [2023-12-20 11:34:28,260 INFO L226 Difference]: Without dead ends: 5038 [2023-12-20 11:34:28,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:34:28,267 INFO L413 NwaCegarLoop]: 4146 mSDtfsCounter, 4460 mSDsluCounter, 16411 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4469 SdHoareTripleChecker+Valid, 20557 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 11:34:28,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4469 Valid, 20557 Invalid, 1444 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 11:34:28,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5038 states. [2023-12-20 11:34:28,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5038 to 4191. [2023-12-20 11:34:28,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4191 states, 3878 states have (on average 1.709128416709644) internal successors, (6628), 3896 states have internal predecessors, (6628), 193 states have call successors, (193), 102 states have call predecessors, (193), 118 states have return successors, (290), 208 states have call predecessors, (290), 193 states have call successors, (290) [2023-12-20 11:34:28,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4191 states to 4191 states and 7111 transitions. [2023-12-20 11:34:28,379 INFO L78 Accepts]: Start accepts. Automaton has 4191 states and 7111 transitions. Word has length 71 [2023-12-20 11:34:28,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:34:28,379 INFO L495 AbstractCegarLoop]: Abstraction has 4191 states and 7111 transitions. [2023-12-20 11:34:28,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-12-20 11:34:28,380 INFO L276 IsEmpty]: Start isEmpty. Operand 4191 states and 7111 transitions. [2023-12-20 11:34:28,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-20 11:34:28,381 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:34:28,381 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] [2023-12-20 11:34:28,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 11:34:28,382 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:34:28,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:34:28,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1227474915, now seen corresponding path program 1 times [2023-12-20 11:34:28,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:34:28,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143688710] [2023-12-20 11:34:28,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:34:28,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:34:28,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:28,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:34:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:28,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:34:28,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:28,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:34:28,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:28,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:34:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:28,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:34:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:28,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:34:28,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:34:28,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143688710] [2023-12-20 11:34:28,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143688710] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:34:28,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:34:28,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:34:28,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393969149] [2023-12-20 11:34:28,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:34:28,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:34:28,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:34:28,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:34:28,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:34:28,454 INFO L87 Difference]: Start difference. First operand 4191 states and 7111 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-12-20 11:34:29,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:34:29,325 INFO L93 Difference]: Finished difference Result 9281 states and 14962 transitions. [2023-12-20 11:34:29,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:34:29,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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 71 [2023-12-20 11:34:29,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:34:29,370 INFO L225 Difference]: With dead ends: 9281 [2023-12-20 11:34:29,370 INFO L226 Difference]: Without dead ends: 7220 [2023-12-20 11:34:29,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:34:29,381 INFO L413 NwaCegarLoop]: 4147 mSDtfsCounter, 4448 mSDsluCounter, 16414 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4462 SdHoareTripleChecker+Valid, 20561 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 11:34:29,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4462 Valid, 20561 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 11:34:29,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7220 states. [2023-12-20 11:34:29,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7220 to 6122. [2023-12-20 11:34:29,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6122 states, 5537 states have (on average 1.6525194148455842) internal successors, (9150), 5571 states have internal predecessors, (9150), 353 states have call successors, (353), 198 states have call predecessors, (353), 230 states have return successors, (628), 384 states have call predecessors, (628), 353 states have call successors, (628) [2023-12-20 11:34:29,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6122 states to 6122 states and 10131 transitions. [2023-12-20 11:34:29,587 INFO L78 Accepts]: Start accepts. Automaton has 6122 states and 10131 transitions. Word has length 71 [2023-12-20 11:34:29,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:34:29,587 INFO L495 AbstractCegarLoop]: Abstraction has 6122 states and 10131 transitions. [2023-12-20 11:34:29,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-12-20 11:34:29,588 INFO L276 IsEmpty]: Start isEmpty. Operand 6122 states and 10131 transitions. [2023-12-20 11:34:29,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-20 11:34:29,592 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:34:29,592 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] [2023-12-20 11:34:29,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 11:34:29,593 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:34:29,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:34:29,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1529152351, now seen corresponding path program 1 times [2023-12-20 11:34:29,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:34:29,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197696296] [2023-12-20 11:34:29,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:34:29,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:34:29,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:29,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:34:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:29,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:34:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:29,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:34:29,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:29,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:34:29,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:29,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:34:29,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:29,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:34:29,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:34:29,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197696296] [2023-12-20 11:34:29,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197696296] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:34:29,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:34:29,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 11:34:29,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169550522] [2023-12-20 11:34:29,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:34:29,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 11:34:29,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:34:29,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 11:34:29,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 11:34:29,684 INFO L87 Difference]: Start difference. First operand 6122 states and 10131 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 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) [2023-12-20 11:34:30,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:34:30,676 INFO L93 Difference]: Finished difference Result 13461 states and 21515 transitions. [2023-12-20 11:34:30,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 11:34:30,676 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 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 71 [2023-12-20 11:34:30,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:34:30,704 INFO L225 Difference]: With dead ends: 13461 [2023-12-20 11:34:30,704 INFO L226 Difference]: Without dead ends: 9470 [2023-12-20 11:34:30,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-20 11:34:30,721 INFO L413 NwaCegarLoop]: 4178 mSDtfsCounter, 4606 mSDsluCounter, 12239 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4633 SdHoareTripleChecker+Valid, 16417 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 11:34:30,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4633 Valid, 16417 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 11:34:30,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9470 states. [2023-12-20 11:34:31,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9470 to 8136. [2023-12-20 11:34:31,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8136 states, 7244 states have (on average 1.6114025400331309) internal successors, (11673), 7311 states have internal predecessors, (11673), 542 states have call successors, (542), 300 states have call predecessors, (542), 348 states have return successors, (899), 556 states have call predecessors, (899), 542 states have call successors, (899) [2023-12-20 11:34:31,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8136 states to 8136 states and 13114 transitions. [2023-12-20 11:34:31,055 INFO L78 Accepts]: Start accepts. Automaton has 8136 states and 13114 transitions. Word has length 71 [2023-12-20 11:34:31,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:34:31,056 INFO L495 AbstractCegarLoop]: Abstraction has 8136 states and 13114 transitions. [2023-12-20 11:34:31,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 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) [2023-12-20 11:34:31,056 INFO L276 IsEmpty]: Start isEmpty. Operand 8136 states and 13114 transitions. [2023-12-20 11:34:31,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-20 11:34:31,071 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:34:31,071 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:34:31,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 11:34:31,071 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:34:31,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:34:31,072 INFO L85 PathProgramCache]: Analyzing trace with hash -184989718, now seen corresponding path program 1 times [2023-12-20 11:34:31,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:34:31,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894736740] [2023-12-20 11:34:31,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:34:31,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:34:31,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:31,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:34:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:31,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:34:31,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:31,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:34:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:31,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:34:31,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:31,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:34:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:31,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-20 11:34:31,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:31,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:34:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:31,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-20 11:34:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:31,174 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 11:34:31,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:34:31,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894736740] [2023-12-20 11:34:31,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894736740] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 11:34:31,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068891123] [2023-12-20 11:34:31,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:34:31,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:34:31,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:34:31,218 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) [2023-12-20 11:34:31,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 11:34:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:31,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 11:34:31,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 11:34:31,473 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-20 11:34:31,473 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 11:34:31,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068891123] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:34:31,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 11:34:31,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-20 11:34:31,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118443373] [2023-12-20 11:34:31,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:34:31,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 11:34:31,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:34:31,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 11:34:31,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:34:31,476 INFO L87 Difference]: Start difference. First operand 8136 states and 13114 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 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) [2023-12-20 11:34:31,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:34:31,929 INFO L93 Difference]: Finished difference Result 19993 states and 31344 transitions. [2023-12-20 11:34:31,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 11:34:31,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 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 115 [2023-12-20 11:34:31,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:34:31,967 INFO L225 Difference]: With dead ends: 19993 [2023-12-20 11:34:31,967 INFO L226 Difference]: Without dead ends: 13988 [2023-12-20 11:34:31,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:34:31,990 INFO L413 NwaCegarLoop]: 4149 mSDtfsCounter, 4122 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4122 SdHoareTripleChecker+Valid, 4322 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 11:34:31,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4122 Valid, 4322 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 11:34:32,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13988 states. [2023-12-20 11:34:32,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13988 to 13936. [2023-12-20 11:34:32,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13936 states, 12184 states have (on average 1.5635259356533158) internal successors, (19050), 12316 states have internal predecessors, (19050), 1054 states have call successors, (1054), 600 states have call predecessors, (1054), 696 states have return successors, (1737), 1051 states have call predecessors, (1737), 1054 states have call successors, (1737) [2023-12-20 11:34:32,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13936 states to 13936 states and 21841 transitions. [2023-12-20 11:34:32,431 INFO L78 Accepts]: Start accepts. Automaton has 13936 states and 21841 transitions. Word has length 115 [2023-12-20 11:34:32,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:34:32,433 INFO L495 AbstractCegarLoop]: Abstraction has 13936 states and 21841 transitions. [2023-12-20 11:34:32,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 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) [2023-12-20 11:34:32,434 INFO L276 IsEmpty]: Start isEmpty. Operand 13936 states and 21841 transitions. [2023-12-20 11:34:32,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-20 11:34:32,451 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:34:32,451 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:34:32,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 11:34:32,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:34:32,660 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:34:32,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:34:32,660 INFO L85 PathProgramCache]: Analyzing trace with hash -414310872, now seen corresponding path program 1 times [2023-12-20 11:34:32,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:34:32,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170067805] [2023-12-20 11:34:32,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:34:32,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:34:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:32,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:34:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:32,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:34:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:32,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:34:32,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:32,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:34:32,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:32,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:34:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:32,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-20 11:34:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:32,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:34:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:32,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-20 11:34:32,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:32,755 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 11:34:32,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:34:32,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170067805] [2023-12-20 11:34:32,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170067805] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 11:34:32,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844075628] [2023-12-20 11:34:32,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:34:32,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:34:32,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:34:32,757 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) [2023-12-20 11:34:32,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 11:34:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:32,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 11:34:32,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 11:34:32,978 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-20 11:34:32,978 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 11:34:32,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844075628] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:34:32,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 11:34:32,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-20 11:34:32,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091203691] [2023-12-20 11:34:32,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:34:32,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 11:34:32,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:34:32,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 11:34:32,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:34:32,980 INFO L87 Difference]: Start difference. First operand 13936 states and 21841 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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) [2023-12-20 11:34:33,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:34:33,465 INFO L93 Difference]: Finished difference Result 37241 states and 57483 transitions. [2023-12-20 11:34:33,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 11:34:33,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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 115 [2023-12-20 11:34:33,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:34:33,533 INFO L225 Difference]: With dead ends: 37241 [2023-12-20 11:34:33,533 INFO L226 Difference]: Without dead ends: 25436 [2023-12-20 11:34:33,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:34:33,570 INFO L413 NwaCegarLoop]: 4149 mSDtfsCounter, 4127 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4127 SdHoareTripleChecker+Valid, 4322 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 11:34:33,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4127 Valid, 4322 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 11:34:33,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25436 states. [2023-12-20 11:34:34,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25436 to 25334. [2023-12-20 11:34:34,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25334 states, 21888 states have (on average 1.5295138888888888) internal successors, (33478), 22150 states have internal predecessors, (33478), 2052 states have call successors, (2052), 1200 states have call predecessors, (2052), 1392 states have return successors, (3387), 2015 states have call predecessors, (3387), 2052 states have call successors, (3387) [2023-12-20 11:34:34,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25334 states to 25334 states and 38917 transitions. [2023-12-20 11:34:34,419 INFO L78 Accepts]: Start accepts. Automaton has 25334 states and 38917 transitions. Word has length 115 [2023-12-20 11:34:34,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:34:34,419 INFO L495 AbstractCegarLoop]: Abstraction has 25334 states and 38917 transitions. [2023-12-20 11:34:34,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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) [2023-12-20 11:34:34,420 INFO L276 IsEmpty]: Start isEmpty. Operand 25334 states and 38917 transitions. [2023-12-20 11:34:34,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-20 11:34:34,449 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:34:34,449 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:34:34,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-20 11:34:34,654 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,SelfDestructingSolverStorable9 [2023-12-20 11:34:34,655 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:34:34,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:34:34,656 INFO L85 PathProgramCache]: Analyzing trace with hash -530874710, now seen corresponding path program 1 times [2023-12-20 11:34:34,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:34:34,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268317626] [2023-12-20 11:34:34,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:34:34,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:34:34,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:34,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:34:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:34,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:34:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:34,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:34:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:34,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:34:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:34,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:34:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:34,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-20 11:34:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:34,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:34:34,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:34,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-20 11:34:34,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:34,750 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 11:34:34,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:34:34,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268317626] [2023-12-20 11:34:34,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268317626] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 11:34:34,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576568120] [2023-12-20 11:34:34,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:34:34,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:34:34,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:34:34,766 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) [2023-12-20 11:34:34,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 11:34:34,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:34,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 11:34:34,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 11:34:34,886 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-20 11:34:34,886 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 11:34:34,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576568120] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:34:34,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 11:34:34,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 11:34:34,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231810537] [2023-12-20 11:34:34,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:34:34,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 11:34:34,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:34:34,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 11:34:34,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:34:34,888 INFO L87 Difference]: Start difference. First operand 25334 states and 38917 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-12-20 11:34:36,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:34:36,234 INFO L93 Difference]: Finished difference Result 70731 states and 108607 transitions. [2023-12-20 11:34:36,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 11:34:36,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 115 [2023-12-20 11:34:36,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:34:36,404 INFO L225 Difference]: With dead ends: 70731 [2023-12-20 11:34:36,404 INFO L226 Difference]: Without dead ends: 47529 [2023-12-20 11:34:36,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:34:36,443 INFO L413 NwaCegarLoop]: 4325 mSDtfsCounter, 182 mSDsluCounter, 4149 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 8474 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 11:34:36,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 8474 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 11:34:36,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47529 states. [2023-12-20 11:34:37,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47529 to 47529. [2023-12-20 11:34:37,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47529 states, 40776 states have (on average 1.5053217578968021) internal successors, (61381), 41231 states have internal predecessors, (61381), 3967 states have call successors, (3967), 2400 states have call predecessors, (3967), 2784 states have return successors, (7350), 3961 states have call predecessors, (7350), 3967 states have call successors, (7350) [2023-12-20 11:34:38,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47529 states to 47529 states and 72698 transitions. [2023-12-20 11:34:38,062 INFO L78 Accepts]: Start accepts. Automaton has 47529 states and 72698 transitions. Word has length 115 [2023-12-20 11:34:38,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:34:38,063 INFO L495 AbstractCegarLoop]: Abstraction has 47529 states and 72698 transitions. [2023-12-20 11:34:38,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-12-20 11:34:38,063 INFO L276 IsEmpty]: Start isEmpty. Operand 47529 states and 72698 transitions. [2023-12-20 11:34:38,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-20 11:34:38,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:34:38,157 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:34:38,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 11:34:38,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:34:38,364 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:34:38,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:34:38,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1353765659, now seen corresponding path program 1 times [2023-12-20 11:34:38,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:34:38,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742346069] [2023-12-20 11:34:38,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:34:38,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:34:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:38,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:34:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:38,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:34:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:38,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:34:38,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:38,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:34:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:38,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:34:38,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:38,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-20 11:34:38,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:38,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:34:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:38,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-20 11:34:38,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:38,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:34:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:38,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-20 11:34:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:38,465 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-20 11:34:38,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:34:38,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742346069] [2023-12-20 11:34:38,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742346069] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 11:34:38,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023532486] [2023-12-20 11:34:38,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:34:38,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:34:38,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:34:38,467 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) [2023-12-20 11:34:38,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 11:34:38,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:38,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 11:34:38,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 11:34:38,760 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-20 11:34:38,760 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 11:34:38,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023532486] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:34:38,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 11:34:38,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-20 11:34:38,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94059262] [2023-12-20 11:34:38,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:34:38,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 11:34:38,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:34:38,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 11:34:38,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:34:38,764 INFO L87 Difference]: Start difference. First operand 47529 states and 72698 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-20 11:34:41,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:34:41,797 INFO L93 Difference]: Finished difference Result 136273 states and 208325 transitions. [2023-12-20 11:34:41,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 11:34:41,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 148 [2023-12-20 11:34:41,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:34:42,127 INFO L225 Difference]: With dead ends: 136273 [2023-12-20 11:34:42,127 INFO L226 Difference]: Without dead ends: 90881 [2023-12-20 11:34:42,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:34:42,205 INFO L413 NwaCegarLoop]: 4158 mSDtfsCounter, 4081 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4081 SdHoareTripleChecker+Valid, 4331 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 11:34:42,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4081 Valid, 4331 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 11:34:42,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90881 states. [2023-12-20 11:34:45,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90881 to 90479. [2023-12-20 11:34:45,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90479 states, 77674 states have (on average 1.4913484563689265) internal successors, (115839), 78581 states have internal predecessors, (115839), 7381 states have call successors, (7381), 4654 states have call predecessors, (7381), 5422 states have return successors, (13774), 7307 states have call predecessors, (13774), 7381 states have call successors, (13774) [2023-12-20 11:34:45,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90479 states to 90479 states and 136994 transitions. [2023-12-20 11:34:45,946 INFO L78 Accepts]: Start accepts. Automaton has 90479 states and 136994 transitions. Word has length 148 [2023-12-20 11:34:45,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:34:45,947 INFO L495 AbstractCegarLoop]: Abstraction has 90479 states and 136994 transitions. [2023-12-20 11:34:45,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-20 11:34:45,947 INFO L276 IsEmpty]: Start isEmpty. Operand 90479 states and 136994 transitions. [2023-12-20 11:34:46,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-20 11:34:46,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:34:46,217 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:34:46,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-20 11:34:46,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:34:46,425 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:34:46,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:34:46,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1877033498, now seen corresponding path program 1 times [2023-12-20 11:34:46,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:34:46,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340190389] [2023-12-20 11:34:46,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:34:46,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:34:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:46,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:34:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:46,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:34:46,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:46,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:34:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:46,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:34:46,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:46,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:34:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:46,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 11:34:46,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:46,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-20 11:34:46,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:46,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:34:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:46,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-20 11:34:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:46,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:34:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:46,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-20 11:34:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:46,519 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-20 11:34:46,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:34:46,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340190389] [2023-12-20 11:34:46,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340190389] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 11:34:46,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655688202] [2023-12-20 11:34:46,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:34:46,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:34:46,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:34:46,520 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 11:34:46,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 11:34:46,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:46,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 11:34:46,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 11:34:46,892 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-20 11:34:46,893 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 11:34:46,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655688202] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:34:46,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 11:34:46,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 11:34:46,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969664652] [2023-12-20 11:34:46,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:34:46,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 11:34:46,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:34:46,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 11:34:46,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:34:46,894 INFO L87 Difference]: Start difference. First operand 90479 states and 136994 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-20 11:34:49,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:34:49,266 INFO L93 Difference]: Finished difference Result 137875 states and 209245 transitions. [2023-12-20 11:34:49,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 11:34:49,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 165 [2023-12-20 11:34:49,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:34:49,490 INFO L225 Difference]: With dead ends: 137875 [2023-12-20 11:34:49,490 INFO L226 Difference]: Without dead ends: 76999 [2023-12-20 11:34:49,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:34:49,591 INFO L413 NwaCegarLoop]: 4146 mSDtfsCounter, 4101 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4101 SdHoareTripleChecker+Valid, 4182 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 11:34:49,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4101 Valid, 4182 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 11:34:49,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76999 states. [2023-12-20 11:34:51,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76999 to 55391. [2023-12-20 11:34:51,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55391 states, 47802 states have (on average 1.4538094640391614) internal successors, (69495), 48265 states have internal predecessors, (69495), 4297 states have call successors, (4297), 2906 states have call predecessors, (4297), 3290 states have return successors, (6802), 4251 states have call predecessors, (6802), 4297 states have call successors, (6802) [2023-12-20 11:34:51,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55391 states to 55391 states and 80594 transitions. [2023-12-20 11:34:51,772 INFO L78 Accepts]: Start accepts. Automaton has 55391 states and 80594 transitions. Word has length 165 [2023-12-20 11:34:51,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:34:51,772 INFO L495 AbstractCegarLoop]: Abstraction has 55391 states and 80594 transitions. [2023-12-20 11:34:51,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-20 11:34:51,773 INFO L276 IsEmpty]: Start isEmpty. Operand 55391 states and 80594 transitions. [2023-12-20 11:34:51,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-20 11:34:51,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:34:51,865 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:34:51,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 11:34:52,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-20 11:34:52,072 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:34:52,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:34:52,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1950429033, now seen corresponding path program 1 times [2023-12-20 11:34:52,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:34:52,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027133455] [2023-12-20 11:34:52,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:34:52,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:34:52,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:52,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:34:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:52,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:34:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:52,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:34:52,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:52,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:34:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:52,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:34:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:52,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 11:34:52,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:52,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-20 11:34:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:52,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:34:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:52,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-20 11:34:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:52,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:34:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:52,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-20 11:34:52,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:52,207 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-20 11:34:52,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:34:52,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027133455] [2023-12-20 11:34:52,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027133455] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 11:34:52,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675302656] [2023-12-20 11:34:52,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:34:52,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:34:52,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:34:52,208 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 11:34:52,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 11:34:52,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:52,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 11:34:52,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 11:34:52,353 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-20 11:34:52,354 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 11:34:52,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675302656] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:34:52,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 11:34:52,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 11:34:52,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730972199] [2023-12-20 11:34:52,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:34:52,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 11:34:52,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:34:52,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 11:34:52,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:34:52,355 INFO L87 Difference]: Start difference. First operand 55391 states and 80594 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-20 11:34:53,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:34:53,988 INFO L93 Difference]: Finished difference Result 95370 states and 137683 transitions. [2023-12-20 11:34:53,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 11:34:53,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 165 [2023-12-20 11:34:53,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:34:54,124 INFO L225 Difference]: With dead ends: 95370 [2023-12-20 11:34:54,124 INFO L226 Difference]: Without dead ends: 58865 [2023-12-20 11:34:54,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:34:54,182 INFO L413 NwaCegarLoop]: 4191 mSDtfsCounter, 4108 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4108 SdHoareTripleChecker+Valid, 4371 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 11:34:54,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4108 Valid, 4371 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 11:34:54,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58865 states. [2023-12-20 11:34:55,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58865 to 58681. [2023-12-20 11:34:55,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58681 states, 50744 states have (on average 1.42852356928898) internal successors, (72489), 51207 states have internal predecessors, (72489), 4395 states have call successors, (4395), 3156 states have call predecessors, (4395), 3540 states have return successors, (7150), 4349 states have call predecessors, (7150), 4395 states have call successors, (7150) [2023-12-20 11:34:56,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58681 states to 58681 states and 84034 transitions. [2023-12-20 11:34:56,102 INFO L78 Accepts]: Start accepts. Automaton has 58681 states and 84034 transitions. Word has length 165 [2023-12-20 11:34:56,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:34:56,102 INFO L495 AbstractCegarLoop]: Abstraction has 58681 states and 84034 transitions. [2023-12-20 11:34:56,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-20 11:34:56,103 INFO L276 IsEmpty]: Start isEmpty. Operand 58681 states and 84034 transitions. [2023-12-20 11:34:56,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-20 11:34:56,176 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:34:56,177 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:34:56,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-20 11:34:56,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:34:56,381 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:34:56,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:34:56,382 INFO L85 PathProgramCache]: Analyzing trace with hash 746415630, now seen corresponding path program 1 times [2023-12-20 11:34:56,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:34:56,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666301428] [2023-12-20 11:34:56,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:34:56,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:34:56,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:56,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:34:56,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:56,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:34:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:56,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:34:56,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:56,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:34:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:56,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:34:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:56,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-20 11:34:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:56,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:34:56,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:56,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-20 11:34:56,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:56,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-20 11:34:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:56,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:34:56,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:56,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-20 11:34:56,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:56,542 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-20 11:34:56,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:34:56,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666301428] [2023-12-20 11:34:56,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666301428] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 11:34:56,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023027181] [2023-12-20 11:34:56,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:34:56,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:34:56,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:34:56,559 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 11:34:56,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 11:34:56,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:34:56,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 11:34:56,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 11:34:56,683 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-20 11:34:56,684 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 11:34:56,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023027181] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:34:56,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 11:34:56,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 11:34:56,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257892335] [2023-12-20 11:34:56,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:34:56,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 11:34:56,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:34:56,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 11:34:56,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:34:56,685 INFO L87 Difference]: Start difference. First operand 58681 states and 84034 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-20 11:34:59,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:34:59,824 INFO L93 Difference]: Finished difference Result 169041 states and 242726 transitions. [2023-12-20 11:34:59,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 11:34:59,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 166 [2023-12-20 11:34:59,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:35:00,304 INFO L225 Difference]: With dead ends: 169041 [2023-12-20 11:35:00,305 INFO L226 Difference]: Without dead ends: 112499 [2023-12-20 11:35:00,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:35:00,375 INFO L413 NwaCegarLoop]: 4319 mSDtfsCounter, 180 mSDsluCounter, 4144 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 8463 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 11:35:00,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 8463 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 11:35:00,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112499 states. [2023-12-20 11:35:03,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112499 to 112389. [2023-12-20 11:35:03,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112389 states, 97046 states have (on average 1.4113616223234342) internal successors, (136967), 97971 states have internal predecessors, (136967), 8417 states have call successors, (8417), 6156 states have call predecessors, (8417), 6924 states have return successors, (15924), 8325 states have call predecessors, (15924), 8417 states have call successors, (15924) [2023-12-20 11:35:04,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112389 states to 112389 states and 161308 transitions. [2023-12-20 11:35:04,499 INFO L78 Accepts]: Start accepts. Automaton has 112389 states and 161308 transitions. Word has length 166 [2023-12-20 11:35:04,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:35:04,500 INFO L495 AbstractCegarLoop]: Abstraction has 112389 states and 161308 transitions. [2023-12-20 11:35:04,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-20 11:35:04,500 INFO L276 IsEmpty]: Start isEmpty. Operand 112389 states and 161308 transitions. [2023-12-20 11:35:04,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-20 11:35:04,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:35:04,674 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 11:35:04,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 11:35:04,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:35:04,880 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:35:04,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:35:04,896 INFO L85 PathProgramCache]: Analyzing trace with hash -986607631, now seen corresponding path program 1 times [2023-12-20 11:35:04,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:35:04,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397598561] [2023-12-20 11:35:04,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:35:04,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:35:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:04,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:35:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:04,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:35:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:05,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:35:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:05,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:35:05,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:05,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:35:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:05,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-20 11:35:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:05,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:35:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:05,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-20 11:35:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:05,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-20 11:35:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:05,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:35:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:05,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-20 11:35:05,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:05,039 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-20 11:35:05,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:35:05,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397598561] [2023-12-20 11:35:05,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397598561] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 11:35:05,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542636057] [2023-12-20 11:35:05,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:35:05,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:35:05,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:35:05,041 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 11:35:05,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 11:35:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:05,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 11:35:05,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 11:35:05,223 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-20 11:35:05,223 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 11:35:05,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542636057] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:35:05,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 11:35:05,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 11:35:05,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271488094] [2023-12-20 11:35:05,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:35:05,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 11:35:05,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:35:05,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 11:35:05,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:35:05,225 INFO L87 Difference]: Start difference. First operand 112389 states and 161308 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-20 11:35:08,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:35:08,557 INFO L93 Difference]: Finished difference Result 186439 states and 270979 transitions. [2023-12-20 11:35:08,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 11:35:08,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 166 [2023-12-20 11:35:08,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:35:08,816 INFO L225 Difference]: With dead ends: 186439 [2023-12-20 11:35:08,816 INFO L226 Difference]: Without dead ends: 97401 [2023-12-20 11:35:08,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:35:08,938 INFO L413 NwaCegarLoop]: 4145 mSDtfsCounter, 4097 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4097 SdHoareTripleChecker+Valid, 4180 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 11:35:08,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4097 Valid, 4180 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 11:35:09,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97401 states. [2023-12-20 11:35:11,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97401 to 71525. [2023-12-20 11:35:11,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71525 states, 62082 states have (on average 1.3804806546180857) internal successors, (85703), 62563 states have internal predecessors, (85703), 5125 states have call successors, (5125), 3932 states have call predecessors, (5125), 4316 states have return successors, (8886), 5061 states have call predecessors, (8886), 5125 states have call successors, (8886) [2023-12-20 11:35:11,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71525 states to 71525 states and 99714 transitions. [2023-12-20 11:35:11,863 INFO L78 Accepts]: Start accepts. Automaton has 71525 states and 99714 transitions. Word has length 166 [2023-12-20 11:35:11,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:35:11,863 INFO L495 AbstractCegarLoop]: Abstraction has 71525 states and 99714 transitions. [2023-12-20 11:35:11,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-20 11:35:11,863 INFO L276 IsEmpty]: Start isEmpty. Operand 71525 states and 99714 transitions. [2023-12-20 11:35:12,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-20 11:35:12,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:35:12,128 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:35:12,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 11:35:12,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-20 11:35:12,336 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:35:12,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:35:12,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1379321810, now seen corresponding path program 1 times [2023-12-20 11:35:12,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:35:12,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269183186] [2023-12-20 11:35:12,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:35:12,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:35:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:12,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:35:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:12,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:35:12,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:12,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:35:12,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:12,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:35:12,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:12,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:35:12,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:12,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-20 11:35:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:12,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:35:12,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:12,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-20 11:35:12,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:12,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-20 11:35:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:12,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:35:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:12,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-20 11:35:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:12,428 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-20 11:35:12,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:35:12,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269183186] [2023-12-20 11:35:12,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269183186] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 11:35:12,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586267267] [2023-12-20 11:35:12,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:35:12,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:35:12,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:35:12,430 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 11:35:12,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 11:35:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:12,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 11:35:12,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 11:35:12,559 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-20 11:35:12,559 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 11:35:12,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586267267] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:35:12,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 11:35:12,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 11:35:12,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350569564] [2023-12-20 11:35:12,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:35:12,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 11:35:12,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:35:12,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 11:35:12,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:35:12,561 INFO L87 Difference]: Start difference. First operand 71525 states and 99714 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-20 11:35:16,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:35:16,538 INFO L93 Difference]: Finished difference Result 201057 states and 282610 transitions. [2023-12-20 11:35:16,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 11:35:16,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 166 [2023-12-20 11:35:16,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:35:16,961 INFO L225 Difference]: With dead ends: 201057 [2023-12-20 11:35:16,961 INFO L226 Difference]: Without dead ends: 131683 [2023-12-20 11:35:17,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:35:17,072 INFO L413 NwaCegarLoop]: 4314 mSDtfsCounter, 166 mSDsluCounter, 4143 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 8457 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 11:35:17,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 8457 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 11:35:17,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131683 states. [2023-12-20 11:35:21,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131683 to 131681. [2023-12-20 11:35:21,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131681 states, 113758 states have (on average 1.3656270328240652) internal successors, (155351), 114719 states have internal predecessors, (155351), 9769 states have call successors, (9769), 7384 states have call predecessors, (9769), 8152 states have return successors, (20332), 9641 states have call predecessors, (20332), 9769 states have call successors, (20332) [2023-12-20 11:35:22,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131681 states to 131681 states and 185452 transitions. [2023-12-20 11:35:22,431 INFO L78 Accepts]: Start accepts. Automaton has 131681 states and 185452 transitions. Word has length 166 [2023-12-20 11:35:22,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:35:22,431 INFO L495 AbstractCegarLoop]: Abstraction has 131681 states and 185452 transitions. [2023-12-20 11:35:22,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-20 11:35:22,431 INFO L276 IsEmpty]: Start isEmpty. Operand 131681 states and 185452 transitions. [2023-12-20 11:35:22,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-20 11:35:22,601 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:35:22,601 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:35:22,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 11:35:22,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-20 11:35:22,808 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:35:22,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:35:22,809 INFO L85 PathProgramCache]: Analyzing trace with hash 436448517, now seen corresponding path program 1 times [2023-12-20 11:35:22,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:35:22,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980425684] [2023-12-20 11:35:22,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:35:22,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:35:22,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:22,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:35:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:22,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:35:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:22,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:35:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:22,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:35:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:22,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:35:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:22,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-20 11:35:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:22,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:35:22,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:22,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-20 11:35:22,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:22,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-20 11:35:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:22,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:35:22,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:22,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-20 11:35:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:22,909 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-20 11:35:22,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:35:22,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980425684] [2023-12-20 11:35:22,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980425684] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 11:35:22,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050320099] [2023-12-20 11:35:22,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:35:22,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:35:22,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:35:22,910 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 11:35:22,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 11:35:23,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:23,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 11:35:23,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 11:35:23,065 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-20 11:35:23,065 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 11:35:23,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050320099] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:35:23,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 11:35:23,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 11:35:23,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882320404] [2023-12-20 11:35:23,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:35:23,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 11:35:23,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:35:23,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 11:35:23,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:35:23,066 INFO L87 Difference]: Start difference. First operand 131681 states and 185452 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-20 11:35:31,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:35:31,151 INFO L93 Difference]: Finished difference Result 372281 states and 531356 transitions. [2023-12-20 11:35:31,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 11:35:31,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 166 [2023-12-20 11:35:31,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:35:32,140 INFO L225 Difference]: With dead ends: 372281 [2023-12-20 11:35:32,140 INFO L226 Difference]: Without dead ends: 242767 [2023-12-20 11:35:32,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:35:32,352 INFO L413 NwaCegarLoop]: 4314 mSDtfsCounter, 168 mSDsluCounter, 4141 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 8455 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 11:35:32,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 8455 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 11:35:32,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242767 states. [2023-12-20 11:35:41,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242767 to 242765. [2023-12-20 11:35:41,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242765 states, 208842 states have (on average 1.3516390381245151) internal successors, (282279), 210763 states have internal predecessors, (282279), 18577 states have call successors, (18577), 13808 states have call predecessors, (18577), 15344 states have return successors, (46186), 18321 states have call predecessors, (46186), 18577 states have call successors, (46186) [2023-12-20 11:35:43,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242765 states to 242765 states and 347042 transitions. [2023-12-20 11:35:43,251 INFO L78 Accepts]: Start accepts. Automaton has 242765 states and 347042 transitions. Word has length 166 [2023-12-20 11:35:43,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:35:43,252 INFO L495 AbstractCegarLoop]: Abstraction has 242765 states and 347042 transitions. [2023-12-20 11:35:43,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-20 11:35:43,252 INFO L276 IsEmpty]: Start isEmpty. Operand 242765 states and 347042 transitions. [2023-12-20 11:35:43,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-20 11:35:43,638 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:35:43,646 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:35:43,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-20 11:35:43,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-20 11:35:43,850 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:35:43,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:35:43,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1397131094, now seen corresponding path program 1 times [2023-12-20 11:35:43,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:35:43,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233922428] [2023-12-20 11:35:43,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:35:43,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:35:43,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:43,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:35:43,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:43,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:35:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:43,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:35:43,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:43,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:35:43,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:43,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:35:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:43,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 11:35:43,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:43,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-20 11:35:43,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:43,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:35:43,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:43,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-20 11:35:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:44,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:35:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:44,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-20 11:35:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:44,007 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-20 11:35:44,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:35:44,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233922428] [2023-12-20 11:35:44,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233922428] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 11:35:44,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476873179] [2023-12-20 11:35:44,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:35:44,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:35:44,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:35:44,009 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 11:35:44,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 11:35:44,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:35:44,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 11:35:44,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 11:35:44,213 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-20 11:35:44,214 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 11:35:44,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476873179] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:35:44,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 11:35:44,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 11:35:44,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982002604] [2023-12-20 11:35:44,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:35:44,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 11:35:44,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:35:44,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 11:35:44,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:35:44,217 INFO L87 Difference]: Start difference. First operand 242765 states and 347042 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-20 11:35:53,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:35:53,110 INFO L93 Difference]: Finished difference Result 431585 states and 617276 transitions. [2023-12-20 11:35:53,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 11:35:53,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 167 [2023-12-20 11:35:53,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:35:53,959 INFO L225 Difference]: With dead ends: 431585 [2023-12-20 11:35:53,960 INFO L226 Difference]: Without dead ends: 247775 [2023-12-20 11:35:54,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:35:54,392 INFO L413 NwaCegarLoop]: 4170 mSDtfsCounter, 4116 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4116 SdHoareTripleChecker+Valid, 4344 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 11:35:54,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4116 Valid, 4344 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 11:35:54,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247775 states. [2023-12-20 11:36:03,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247775 to 242269. [2023-12-20 11:36:03,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242269 states, 208346 states have (on average 1.344143876052336) internal successors, (280047), 210267 states have internal predecessors, (280047), 18577 states have call successors, (18577), 13808 states have call predecessors, (18577), 15344 states have return successors, (46186), 18321 states have call predecessors, (46186), 18577 states have call successors, (46186) [2023-12-20 11:36:05,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242269 states to 242269 states and 344810 transitions. [2023-12-20 11:36:05,137 INFO L78 Accepts]: Start accepts. Automaton has 242269 states and 344810 transitions. Word has length 167 [2023-12-20 11:36:05,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:36:05,137 INFO L495 AbstractCegarLoop]: Abstraction has 242269 states and 344810 transitions. [2023-12-20 11:36:05,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-20 11:36:05,138 INFO L276 IsEmpty]: Start isEmpty. Operand 242269 states and 344810 transitions. [2023-12-20 11:36:05,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-20 11:36:05,420 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:36:05,420 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:36:05,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 11:36:05,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:36:05,626 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:36:05,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:36:05,626 INFO L85 PathProgramCache]: Analyzing trace with hash -180366914, now seen corresponding path program 1 times [2023-12-20 11:36:05,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:36:05,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261778946] [2023-12-20 11:36:05,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:36:05,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:36:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:36:05,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:36:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:36:05,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:36:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:36:05,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:36:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:36:05,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:36:05,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:36:05,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:36:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:36:05,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 11:36:05,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:36:05,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-20 11:36:05,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:36:05,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:36:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:36:05,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-20 11:36:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:36:05,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:36:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:36:05,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-20 11:36:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:36:05,710 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-20 11:36:05,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:36:05,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261778946] [2023-12-20 11:36:05,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261778946] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 11:36:05,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318795606] [2023-12-20 11:36:05,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:36:05,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:36:05,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:36:05,738 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 11:36:05,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 11:36:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:36:05,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 11:36:05,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 11:36:05,922 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-20 11:36:05,922 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 11:36:05,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318795606] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:36:05,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 11:36:05,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 11:36:05,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531050531] [2023-12-20 11:36:05,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:36:05,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 11:36:05,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:36:05,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 11:36:05,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:36:05,923 INFO L87 Difference]: Start difference. First operand 242269 states and 344810 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-20 11:36:17,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:36:17,857 INFO L93 Difference]: Finished difference Result 561679 states and 834836 transitions. [2023-12-20 11:36:17,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 11:36:17,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 167 [2023-12-20 11:36:17,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:36:19,761 INFO L225 Difference]: With dead ends: 561679 [2023-12-20 11:36:19,761 INFO L226 Difference]: Without dead ends: 321613 [2023-12-20 11:36:20,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:36:20,313 INFO L413 NwaCegarLoop]: 4150 mSDtfsCounter, 4117 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4117 SdHoareTripleChecker+Valid, 4205 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 11:36:20,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4117 Valid, 4205 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 11:36:20,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321613 states. [2023-12-20 11:36:33,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321613 to 320877. [2023-12-20 11:36:33,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320877 states, 278898 states have (on average 1.3410745146971295) internal successors, (374023), 280819 states have internal predecessors, (374023), 22577 states have call successors, (22577), 17776 states have call predecessors, (22577), 19400 states have return successors, (70665), 22409 states have call predecessors, (70665), 22577 states have call successors, (70665) [2023-12-20 11:36:35,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320877 states to 320877 states and 467265 transitions. [2023-12-20 11:36:35,414 INFO L78 Accepts]: Start accepts. Automaton has 320877 states and 467265 transitions. Word has length 167 [2023-12-20 11:36:35,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:36:35,414 INFO L495 AbstractCegarLoop]: Abstraction has 320877 states and 467265 transitions. [2023-12-20 11:36:35,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-20 11:36:35,414 INFO L276 IsEmpty]: Start isEmpty. Operand 320877 states and 467265 transitions. [2023-12-20 11:36:36,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-20 11:36:36,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:36:36,303 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:36:36,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-20 11:36:36,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:36:36,513 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:36:36,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:36:36,513 INFO L85 PathProgramCache]: Analyzing trace with hash -439366852, now seen corresponding path program 1 times [2023-12-20 11:36:36,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:36:36,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223370290] [2023-12-20 11:36:36,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:36:36,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:36:36,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:36:36,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:36:36,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:36:36,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:36:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:36:36,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:36:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:36:36,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:36:36,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:36:36,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:36:36,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:36:36,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 11:36:36,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:36:36,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-20 11:36:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:36:36,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:36:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:36:36,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-20 11:36:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:36:36,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:36:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:36:36,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-20 11:36:36,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:36:36,749 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-20 11:36:36,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:36:36,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223370290] [2023-12-20 11:36:36,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223370290] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 11:36:36,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612985003] [2023-12-20 11:36:36,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:36:36,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:36:36,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:36:36,761 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 11:36:36,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 11:36:36,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:36:36,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 11:36:36,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 11:36:36,939 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-20 11:36:36,939 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 11:36:36,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612985003] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:36:36,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 11:36:36,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 11:36:36,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747936223] [2023-12-20 11:36:36,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:36:36,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 11:36:36,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:36:36,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 11:36:36,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:36:36,941 INFO L87 Difference]: Start difference. First operand 320877 states and 467265 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9)