/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 true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/Problem05_label42+token_ring.07.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-18 22:11:09,355 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-18 22:11:09,426 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-18 22:11:09,430 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-18 22:11:09,431 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-18 22:11:09,453 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-18 22:11:09,454 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-18 22:11:09,454 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-18 22:11:09,455 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-18 22:11:09,458 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-18 22:11:09,458 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-18 22:11:09,458 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-18 22:11:09,459 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-18 22:11:09,460 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-18 22:11:09,460 INFO L153 SettingsManager]: * Use SBE=true [2023-12-18 22:11:09,460 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-18 22:11:09,460 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-18 22:11:09,460 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-18 22:11:09,461 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-18 22:11:09,462 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-18 22:11:09,462 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-18 22:11:09,462 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-18 22:11:09,462 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-18 22:11:09,462 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-18 22:11:09,463 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-18 22:11:09,463 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-18 22:11:09,463 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-18 22:11:09,463 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-18 22:11:09,464 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-18 22:11:09,464 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-18 22:11:09,465 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-18 22:11:09,465 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-18 22:11:09,465 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 22:11:09,465 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-18 22:11:09,465 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-18 22:11:09,465 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-18 22:11:09,465 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-18 22:11:09,466 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-18 22:11:09,466 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-18 22:11:09,466 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-18 22:11:09,466 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-18 22:11:09,466 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-18 22:11:09,466 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-18 22:11:09,467 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-18 22:11:09,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-18 22:11:09,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-18 22:11:09,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-18 22:11:09,680 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-18 22:11:09,681 INFO L274 PluginConnector]: CDTParser initialized [2023-12-18 22:11:09,681 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label42+token_ring.07.cil-1.c [2023-12-18 22:11:10,650 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-18 22:11:11,096 INFO L384 CDTParser]: Found 1 translation units. [2023-12-18 22:11:11,097 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label42+token_ring.07.cil-1.c [2023-12-18 22:11:11,143 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/084425013/6ebde07f44f344ab9a3fa63927b93549/FLAG3e9de0769 [2023-12-18 22:11:11,155 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/084425013/6ebde07f44f344ab9a3fa63927b93549 [2023-12-18 22:11:11,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-18 22:11:11,158 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-18 22:11:11,160 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-18 22:11:11,160 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-18 22:11:11,171 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-18 22:11:11,171 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:11:11" (1/1) ... [2023-12-18 22:11:11,172 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47b41b76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:11:11, skipping insertion in model container [2023-12-18 22:11:11,172 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:11:11" (1/1) ... [2023-12-18 22:11:11,335 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-18 22:11:12,677 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_label42+token_ring.07.cil-1.c[378560,378573] [2023-12-18 22:11:12,699 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_label42+token_ring.07.cil-1.c[383339,383352] [2023-12-18 22:11:12,879 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 22:11:12,891 INFO L202 MainTranslator]: Completed pre-run [2023-12-18 22:11:13,484 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_label42+token_ring.07.cil-1.c[378560,378573] [2023-12-18 22:11:13,489 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_label42+token_ring.07.cil-1.c[383339,383352] [2023-12-18 22:11:13,508 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 22:11:13,548 INFO L206 MainTranslator]: Completed translation [2023-12-18 22:11:13,548 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:11:13 WrapperNode [2023-12-18 22:11:13,549 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-18 22:11:13,550 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-18 22:11:13,550 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-18 22:11:13,550 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-18 22:11:13,556 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:11:13" (1/1) ... [2023-12-18 22:11:13,655 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:11:13" (1/1) ... [2023-12-18 22:11:13,936 INFO L138 Inliner]: procedures = 58, calls = 62, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 12933 [2023-12-18 22:11:13,937 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-18 22:11:13,937 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-18 22:11:13,937 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-18 22:11:13,938 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-18 22:11:13,945 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:11:13" (1/1) ... [2023-12-18 22:11:13,945 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:11:13" (1/1) ... [2023-12-18 22:11:13,990 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:11:13" (1/1) ... [2023-12-18 22:11:14,052 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]. [2023-12-18 22:11:14,053 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:11:13" (1/1) ... [2023-12-18 22:11:14,053 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:11:13" (1/1) ... [2023-12-18 22:11:14,234 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:11:13" (1/1) ... [2023-12-18 22:11:14,283 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:11:13" (1/1) ... [2023-12-18 22:11:14,302 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:11:13" (1/1) ... [2023-12-18 22:11:14,320 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:11:13" (1/1) ... [2023-12-18 22:11:14,383 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-18 22:11:14,384 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-18 22:11:14,385 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-18 22:11:14,385 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-18 22:11:14,385 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:11:13" (1/1) ... [2023-12-18 22:11:14,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 22:11:14,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:11:14,417 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) [2023-12-18 22:11:14,440 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 [2023-12-18 22:11:14,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-18 22:11:14,447 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-18 22:11:14,447 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-18 22:11:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-18 22:11:14,448 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-18 22:11:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-18 22:11:14,448 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-18 22:11:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-18 22:11:14,448 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-18 22:11:14,449 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-18 22:11:14,449 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-18 22:11:14,449 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-18 22:11:14,449 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-18 22:11:14,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-18 22:11:14,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-18 22:11:14,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-18 22:11:14,554 INFO L241 CfgBuilder]: Building ICFG [2023-12-18 22:11:14,555 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-18 22:11:19,811 INFO L282 CfgBuilder]: Performing block encoding [2023-12-18 22:11:19,894 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-18 22:11:19,894 INFO L309 CfgBuilder]: Removed 11 assume(true) statements. [2023-12-18 22:11:19,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:11:19 BoogieIcfgContainer [2023-12-18 22:11:19,895 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-18 22:11:19,896 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-18 22:11:19,896 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-18 22:11:19,899 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-18 22:11:19,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 10:11:11" (1/3) ... [2023-12-18 22:11:19,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@254aaedc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:11:19, skipping insertion in model container [2023-12-18 22:11:19,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:11:13" (2/3) ... [2023-12-18 22:11:19,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@254aaedc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:11:19, skipping insertion in model container [2023-12-18 22:11:19,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:11:19" (3/3) ... [2023-12-18 22:11:19,901 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.07.cil-1.c [2023-12-18 22:11:19,913 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-18 22:11:19,914 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-18 22:11:19,982 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-18 22:11:19,986 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;@310469f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-18 22:11:19,986 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-18 22:11:19,997 INFO L276 IsEmpty]: Start isEmpty. Operand has 2356 states, 2326 states have (on average 1.880481513327601) internal successors, (4374), 2329 states have internal predecessors, (4374), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-18 22:11:20,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-18 22:11:20,018 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:11:20,019 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:11:20,020 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:11:20,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:11:20,023 INFO L85 PathProgramCache]: Analyzing trace with hash -777767020, now seen corresponding path program 1 times [2023-12-18 22:11:20,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:11:20,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327331087] [2023-12-18 22:11:20,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:11:20,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:11:20,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:20,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:11:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:20,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-18 22:11:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:20,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-18 22:11:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:20,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 22:11:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:20,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 22:11:20,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:20,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:11:20,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:11:20,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327331087] [2023-12-18 22:11:20,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327331087] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:11:20,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:11:20,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 22:11:20,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493194750] [2023-12-18 22:11:20,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:11:20,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 22:11:20,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:11:20,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 22:11:20,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-18 22:11:20,409 INFO L87 Difference]: Start difference. First operand has 2356 states, 2326 states have (on average 1.880481513327601) internal successors, (4374), 2329 states have internal predecessors, (4374), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:11:21,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:11:21,326 INFO L93 Difference]: Finished difference Result 4782 states and 8954 transitions. [2023-12-18 22:11:21,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 22:11:21,328 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 111 [2023-12-18 22:11:21,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:11:21,347 INFO L225 Difference]: With dead ends: 4782 [2023-12-18 22:11:21,348 INFO L226 Difference]: Without dead ends: 2432 [2023-12-18 22:11:21,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-18 22:11:21,360 INFO L413 NwaCegarLoop]: 4162 mSDtfsCounter, 618 mSDsluCounter, 12094 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 16256 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-18 22:11:21,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 16256 Invalid, 726 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [46 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-18 22:11:21,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2432 states. [2023-12-18 22:11:21,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2432 to 2352. [2023-12-18 22:11:21,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2352 states, 2323 states have (on average 1.8441670253981919) internal successors, (4284), 2325 states have internal predecessors, (4284), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-18 22:11:21,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 4326 transitions. [2023-12-18 22:11:21,489 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 4326 transitions. Word has length 111 [2023-12-18 22:11:21,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:11:21,489 INFO L495 AbstractCegarLoop]: Abstraction has 2352 states and 4326 transitions. [2023-12-18 22:11:21,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:11:21,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 4326 transitions. [2023-12-18 22:11:21,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-18 22:11:21,492 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:11:21,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:11:21,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-18 22:11:21,492 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:11:21,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:11:21,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1128636246, now seen corresponding path program 1 times [2023-12-18 22:11:21,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:11:21,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979015178] [2023-12-18 22:11:21,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:11:21,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:11:21,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:21,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:11:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:21,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-18 22:11:21,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:21,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-18 22:11:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:21,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 22:11:21,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:21,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 22:11:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:21,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:11:21,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:11:21,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979015178] [2023-12-18 22:11:21,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979015178] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:11:21,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:11:21,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 22:11:21,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73427666] [2023-12-18 22:11:21,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:11:21,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 22:11:21,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:11:21,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 22:11:21,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-18 22:11:21,692 INFO L87 Difference]: Start difference. First operand 2352 states and 4326 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 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) [2023-12-18 22:11:23,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:11:23,331 INFO L93 Difference]: Finished difference Result 2957 states and 5322 transitions. [2023-12-18 22:11:23,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-18 22:11:23,332 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 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 111 [2023-12-18 22:11:23,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:11:23,343 INFO L225 Difference]: With dead ends: 2957 [2023-12-18 22:11:23,344 INFO L226 Difference]: Without dead ends: 2739 [2023-12-18 22:11:23,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:11:23,347 INFO L413 NwaCegarLoop]: 4137 mSDtfsCounter, 4889 mSDsluCounter, 12392 mSDsCounter, 0 mSdLazyCounter, 1453 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4903 SdHoareTripleChecker+Valid, 16529 SdHoareTripleChecker+Invalid, 1541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-18 22:11:23,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4903 Valid, 16529 Invalid, 1541 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 1453 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-18 22:11:23,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2739 states. [2023-12-18 22:11:23,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2739 to 2580. [2023-12-18 22:11:23,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2580 states, 2528 states have (on average 1.8263449367088607) internal successors, (4617), 2531 states have internal predecessors, (4617), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2023-12-18 22:11:23,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2580 states to 2580 states and 4694 transitions. [2023-12-18 22:11:23,421 INFO L78 Accepts]: Start accepts. Automaton has 2580 states and 4694 transitions. Word has length 111 [2023-12-18 22:11:23,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:11:23,421 INFO L495 AbstractCegarLoop]: Abstraction has 2580 states and 4694 transitions. [2023-12-18 22:11:23,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 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) [2023-12-18 22:11:23,422 INFO L276 IsEmpty]: Start isEmpty. Operand 2580 states and 4694 transitions. [2023-12-18 22:11:23,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-18 22:11:23,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:11:23,425 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:11:23,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-18 22:11:23,425 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:11:23,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:11:23,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1887332390, now seen corresponding path program 1 times [2023-12-18 22:11:23,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:11:23,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277483049] [2023-12-18 22:11:23,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:11:23,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:11:23,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:23,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:11:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:23,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-18 22:11:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:23,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-18 22:11:23,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:23,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 22:11:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:23,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 22:11:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:23,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:11:23,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:11:23,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277483049] [2023-12-18 22:11:23,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277483049] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:11:23,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:11:23,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:11:23,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645676978] [2023-12-18 22:11:23,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:11:23,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:11:23,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:11:23,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:11:23,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:11:23,677 INFO L87 Difference]: Start difference. First operand 2580 states and 4694 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-18 22:11:25,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:11:25,722 INFO L93 Difference]: Finished difference Result 3502 states and 6208 transitions. [2023-12-18 22:11:25,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:11:25,722 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2023-12-18 22:11:25,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:11:25,732 INFO L225 Difference]: With dead ends: 3502 [2023-12-18 22:11:25,732 INFO L226 Difference]: Without dead ends: 3056 [2023-12-18 22:11:25,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:11:25,735 INFO L413 NwaCegarLoop]: 4270 mSDtfsCounter, 4904 mSDsluCounter, 16836 mSDsCounter, 0 mSdLazyCounter, 2373 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4918 SdHoareTripleChecker+Valid, 21106 SdHoareTripleChecker+Invalid, 2424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-18 22:11:25,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4918 Valid, 21106 Invalid, 2424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2373 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-18 22:11:25,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3056 states. [2023-12-18 22:11:25,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3056 to 2791. [2023-12-18 22:11:25,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2791 states, 2716 states have (on average 1.8100147275405007) internal successors, (4916), 2720 states have internal predecessors, (4916), 53 states have call successors, (53), 18 states have call predecessors, (53), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2023-12-18 22:11:25,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 5027 transitions. [2023-12-18 22:11:25,794 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 5027 transitions. Word has length 111 [2023-12-18 22:11:25,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:11:25,794 INFO L495 AbstractCegarLoop]: Abstraction has 2791 states and 5027 transitions. [2023-12-18 22:11:25,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-18 22:11:25,795 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 5027 transitions. [2023-12-18 22:11:25,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-18 22:11:25,796 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:11:25,796 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:11:25,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-18 22:11:25,796 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:11:25,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:11:25,796 INFO L85 PathProgramCache]: Analyzing trace with hash 788659992, now seen corresponding path program 1 times [2023-12-18 22:11:25,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:11:25,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898556803] [2023-12-18 22:11:25,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:11:25,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:11:25,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:25,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:11:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:25,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-18 22:11:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:25,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-18 22:11:25,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:25,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 22:11:25,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:25,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 22:11:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:25,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:11:25,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:11:25,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898556803] [2023-12-18 22:11:25,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898556803] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:11:25,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:11:25,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:11:25,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551174977] [2023-12-18 22:11:25,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:11:25,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:11:25,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:11:25,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:11:25,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:11:25,929 INFO L87 Difference]: Start difference. First operand 2791 states and 5027 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-18 22:11:27,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:11:27,833 INFO L93 Difference]: Finished difference Result 4300 states and 7499 transitions. [2023-12-18 22:11:27,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:11:27,834 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2023-12-18 22:11:27,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:11:27,845 INFO L225 Difference]: With dead ends: 4300 [2023-12-18 22:11:27,846 INFO L226 Difference]: Without dead ends: 3643 [2023-12-18 22:11:27,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:11:27,854 INFO L413 NwaCegarLoop]: 4268 mSDtfsCounter, 4902 mSDsluCounter, 16836 mSDsCounter, 0 mSdLazyCounter, 2369 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4916 SdHoareTripleChecker+Valid, 21104 SdHoareTripleChecker+Invalid, 2422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-18 22:11:27,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4916 Valid, 21104 Invalid, 2422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 2369 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-18 22:11:27,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3643 states. [2023-12-18 22:11:27,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3643 to 3214. [2023-12-18 22:11:27,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3214 states, 3093 states have (on average 1.7830585192369868) internal successors, (5515), 3099 states have internal predecessors, (5515), 85 states have call successors, (85), 30 states have call predecessors, (85), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2023-12-18 22:11:27,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3214 states to 3214 states and 5698 transitions. [2023-12-18 22:11:27,944 INFO L78 Accepts]: Start accepts. Automaton has 3214 states and 5698 transitions. Word has length 111 [2023-12-18 22:11:27,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:11:27,944 INFO L495 AbstractCegarLoop]: Abstraction has 3214 states and 5698 transitions. [2023-12-18 22:11:27,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-18 22:11:27,945 INFO L276 IsEmpty]: Start isEmpty. Operand 3214 states and 5698 transitions. [2023-12-18 22:11:27,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-18 22:11:27,946 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:11:27,946 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:11:27,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-18 22:11:27,946 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:11:27,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:11:27,946 INFO L85 PathProgramCache]: Analyzing trace with hash -94848998, now seen corresponding path program 1 times [2023-12-18 22:11:27,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:11:27,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698814597] [2023-12-18 22:11:27,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:11:27,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:11:27,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:28,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:11:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:28,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-18 22:11:28,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:28,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-18 22:11:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:28,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 22:11:28,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:28,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 22:11:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:28,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:11:28,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:11:28,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698814597] [2023-12-18 22:11:28,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698814597] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:11:28,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:11:28,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:11:28,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214981966] [2023-12-18 22:11:28,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:11:28,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:11:28,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:11:28,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:11:28,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:11:28,093 INFO L87 Difference]: Start difference. First operand 3214 states and 5698 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-18 22:11:29,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:11:29,016 INFO L93 Difference]: Finished difference Result 4713 states and 8163 transitions. [2023-12-18 22:11:29,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 22:11:29,017 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2023-12-18 22:11:29,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:11:29,029 INFO L225 Difference]: With dead ends: 4713 [2023-12-18 22:11:29,029 INFO L226 Difference]: Without dead ends: 3633 [2023-12-18 22:11:29,033 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 [2023-12-18 22:11:29,033 INFO L413 NwaCegarLoop]: 4124 mSDtfsCounter, 4645 mSDsluCounter, 16334 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4660 SdHoareTripleChecker+Valid, 20458 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-18 22:11:29,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4660 Valid, 20458 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-18 22:11:29,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3633 states. [2023-12-18 22:11:29,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3633 to 3214. [2023-12-18 22:11:29,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3214 states, 3093 states have (on average 1.7814419657290657) internal successors, (5510), 3099 states have internal predecessors, (5510), 85 states have call successors, (85), 30 states have call predecessors, (85), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2023-12-18 22:11:29,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3214 states to 3214 states and 5693 transitions. [2023-12-18 22:11:29,116 INFO L78 Accepts]: Start accepts. Automaton has 3214 states and 5693 transitions. Word has length 111 [2023-12-18 22:11:29,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:11:29,116 INFO L495 AbstractCegarLoop]: Abstraction has 3214 states and 5693 transitions. [2023-12-18 22:11:29,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-18 22:11:29,116 INFO L276 IsEmpty]: Start isEmpty. Operand 3214 states and 5693 transitions. [2023-12-18 22:11:29,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-18 22:11:29,118 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:11:29,118 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:11:29,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-18 22:11:29,118 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:11:29,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:11:29,118 INFO L85 PathProgramCache]: Analyzing trace with hash -123349288, now seen corresponding path program 1 times [2023-12-18 22:11:29,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:11:29,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458280439] [2023-12-18 22:11:29,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:11:29,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:11:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:29,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:11:29,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:29,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-18 22:11:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:29,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-18 22:11:29,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:29,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 22:11:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:29,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 22:11:29,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:29,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:11:29,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:11:29,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458280439] [2023-12-18 22:11:29,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458280439] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:11:29,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:11:29,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:11:29,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265973681] [2023-12-18 22:11:29,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:11:29,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:11:29,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:11:29,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:11:29,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:11:29,255 INFO L87 Difference]: Start difference. First operand 3214 states and 5693 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-18 22:11:30,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:11:30,183 INFO L93 Difference]: Finished difference Result 4707 states and 8137 transitions. [2023-12-18 22:11:30,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 22:11:30,184 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2023-12-18 22:11:30,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:11:30,242 INFO L225 Difference]: With dead ends: 4707 [2023-12-18 22:11:30,242 INFO L226 Difference]: Without dead ends: 3627 [2023-12-18 22:11:30,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:11:30,244 INFO L413 NwaCegarLoop]: 4124 mSDtfsCounter, 4643 mSDsluCounter, 16334 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4658 SdHoareTripleChecker+Valid, 20458 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-18 22:11:30,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4658 Valid, 20458 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-18 22:11:30,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3627 states. [2023-12-18 22:11:30,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3627 to 3214. [2023-12-18 22:11:30,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3214 states, 3093 states have (on average 1.7798254122211445) internal successors, (5505), 3099 states have internal predecessors, (5505), 85 states have call successors, (85), 30 states have call predecessors, (85), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2023-12-18 22:11:30,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3214 states to 3214 states and 5688 transitions. [2023-12-18 22:11:30,317 INFO L78 Accepts]: Start accepts. Automaton has 3214 states and 5688 transitions. Word has length 111 [2023-12-18 22:11:30,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:11:30,317 INFO L495 AbstractCegarLoop]: Abstraction has 3214 states and 5688 transitions. [2023-12-18 22:11:30,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-18 22:11:30,318 INFO L276 IsEmpty]: Start isEmpty. Operand 3214 states and 5688 transitions. [2023-12-18 22:11:30,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-18 22:11:30,319 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:11:30,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:11:30,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-18 22:11:30,319 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:11:30,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:11:30,320 INFO L85 PathProgramCache]: Analyzing trace with hash -2063931302, now seen corresponding path program 1 times [2023-12-18 22:11:30,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:11:30,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240873185] [2023-12-18 22:11:30,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:11:30,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:11:30,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:30,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:11:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:30,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-18 22:11:30,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:30,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-18 22:11:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:30,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 22:11:30,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:30,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 22:11:30,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:30,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:11:30,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:11:30,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240873185] [2023-12-18 22:11:30,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240873185] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:11:30,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:11:30,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:11:30,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279158220] [2023-12-18 22:11:30,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:11:30,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:11:30,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:11:30,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:11:30,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:11:30,455 INFO L87 Difference]: Start difference. First operand 3214 states and 5688 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-18 22:11:31,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:11:31,261 INFO L93 Difference]: Finished difference Result 4700 states and 8109 transitions. [2023-12-18 22:11:31,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 22:11:31,261 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2023-12-18 22:11:31,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:11:31,272 INFO L225 Difference]: With dead ends: 4700 [2023-12-18 22:11:31,272 INFO L226 Difference]: Without dead ends: 3620 [2023-12-18 22:11:31,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:11:31,275 INFO L413 NwaCegarLoop]: 4124 mSDtfsCounter, 4744 mSDsluCounter, 12269 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4759 SdHoareTripleChecker+Valid, 16393 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-18 22:11:31,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4759 Valid, 16393 Invalid, 1126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-18 22:11:31,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3620 states. [2023-12-18 22:11:31,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3620 to 3214. [2023-12-18 22:11:31,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3214 states, 3093 states have (on average 1.7782088587132234) internal successors, (5500), 3099 states have internal predecessors, (5500), 85 states have call successors, (85), 30 states have call predecessors, (85), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2023-12-18 22:11:31,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3214 states to 3214 states and 5683 transitions. [2023-12-18 22:11:31,340 INFO L78 Accepts]: Start accepts. Automaton has 3214 states and 5683 transitions. Word has length 111 [2023-12-18 22:11:31,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:11:31,340 INFO L495 AbstractCegarLoop]: Abstraction has 3214 states and 5683 transitions. [2023-12-18 22:11:31,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-18 22:11:31,341 INFO L276 IsEmpty]: Start isEmpty. Operand 3214 states and 5683 transitions. [2023-12-18 22:11:31,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-18 22:11:31,342 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:11:31,342 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:11:31,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-18 22:11:31,342 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:11:31,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:11:31,342 INFO L85 PathProgramCache]: Analyzing trace with hash -186868072, now seen corresponding path program 1 times [2023-12-18 22:11:31,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:11:31,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704678075] [2023-12-18 22:11:31,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:11:31,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:11:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:31,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:11:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:31,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-18 22:11:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:31,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-18 22:11:31,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:31,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 22:11:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:31,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 22:11:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:31,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:11:31,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:11:31,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704678075] [2023-12-18 22:11:31,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704678075] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:11:31,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:11:31,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:11:31,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868783335] [2023-12-18 22:11:31,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:11:31,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:11:31,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:11:31,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:11:31,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:11:31,467 INFO L87 Difference]: Start difference. First operand 3214 states and 5683 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-18 22:11:32,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:11:32,400 INFO L93 Difference]: Finished difference Result 4688 states and 8071 transitions. [2023-12-18 22:11:32,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 22:11:32,400 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2023-12-18 22:11:32,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:11:32,421 INFO L225 Difference]: With dead ends: 4688 [2023-12-18 22:11:32,421 INFO L226 Difference]: Without dead ends: 3608 [2023-12-18 22:11:32,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:11:32,425 INFO L413 NwaCegarLoop]: 4124 mSDtfsCounter, 4643 mSDsluCounter, 16334 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4658 SdHoareTripleChecker+Valid, 20458 SdHoareTripleChecker+Invalid, 1199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-18 22:11:32,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4658 Valid, 20458 Invalid, 1199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1144 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-18 22:11:32,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3608 states. [2023-12-18 22:11:32,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3608 to 3214. [2023-12-18 22:11:32,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3214 states, 3093 states have (on average 1.7765923052053023) internal successors, (5495), 3099 states have internal predecessors, (5495), 85 states have call successors, (85), 30 states have call predecessors, (85), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2023-12-18 22:11:32,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3214 states to 3214 states and 5678 transitions. [2023-12-18 22:11:32,489 INFO L78 Accepts]: Start accepts. Automaton has 3214 states and 5678 transitions. Word has length 111 [2023-12-18 22:11:32,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:11:32,489 INFO L495 AbstractCegarLoop]: Abstraction has 3214 states and 5678 transitions. [2023-12-18 22:11:32,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-18 22:11:32,490 INFO L276 IsEmpty]: Start isEmpty. Operand 3214 states and 5678 transitions. [2023-12-18 22:11:32,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-18 22:11:32,491 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:11:32,491 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:11:32,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-18 22:11:32,491 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:11:32,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:11:32,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1181561770, now seen corresponding path program 1 times [2023-12-18 22:11:32,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:11:32,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114365028] [2023-12-18 22:11:32,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:11:32,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:11:32,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:32,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:11:32,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:32,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-18 22:11:32,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:32,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-18 22:11:32,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:32,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 22:11:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:32,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 22:11:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:32,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:11:32,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:11:32,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114365028] [2023-12-18 22:11:32,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114365028] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:11:32,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:11:32,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:11:32,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090634318] [2023-12-18 22:11:32,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:11:32,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:11:32,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:11:32,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:11:32,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:11:32,683 INFO L87 Difference]: Start difference. First operand 3214 states and 5678 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-18 22:11:34,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:11:34,706 INFO L93 Difference]: Finished difference Result 6166 states and 10402 transitions. [2023-12-18 22:11:34,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:11:34,706 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2023-12-18 22:11:34,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:11:34,717 INFO L225 Difference]: With dead ends: 6166 [2023-12-18 22:11:34,717 INFO L226 Difference]: Without dead ends: 5086 [2023-12-18 22:11:34,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:11:34,721 INFO L413 NwaCegarLoop]: 4266 mSDtfsCounter, 5132 mSDsluCounter, 16831 mSDsCounter, 0 mSdLazyCounter, 2229 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5154 SdHoareTripleChecker+Valid, 21097 SdHoareTripleChecker+Invalid, 2285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-18 22:11:34,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5154 Valid, 21097 Invalid, 2285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 2229 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-18 22:11:34,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5086 states. [2023-12-18 22:11:34,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5086 to 4075. [2023-12-18 22:11:34,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4075 states, 3866 states have (on average 1.734092084842214) internal successors, (6704), 3876 states have internal predecessors, (6704), 145 states have call successors, (145), 54 states have call predecessors, (145), 62 states have return successors, (180), 152 states have call predecessors, (180), 145 states have call successors, (180) [2023-12-18 22:11:34,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4075 states to 4075 states and 7029 transitions. [2023-12-18 22:11:34,840 INFO L78 Accepts]: Start accepts. Automaton has 4075 states and 7029 transitions. Word has length 111 [2023-12-18 22:11:34,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:11:34,840 INFO L495 AbstractCegarLoop]: Abstraction has 4075 states and 7029 transitions. [2023-12-18 22:11:34,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-18 22:11:34,840 INFO L276 IsEmpty]: Start isEmpty. Operand 4075 states and 7029 transitions. [2023-12-18 22:11:34,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-18 22:11:34,842 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:11:34,842 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:11:34,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-18 22:11:34,842 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:11:34,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:11:34,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1767837992, now seen corresponding path program 1 times [2023-12-18 22:11:34,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:11:34,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031044750] [2023-12-18 22:11:34,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:11:34,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:11:34,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:34,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:11:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:34,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-18 22:11:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:34,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-18 22:11:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:34,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 22:11:34,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:34,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 22:11:34,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:34,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:11:34,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:11:34,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031044750] [2023-12-18 22:11:34,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031044750] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:11:34,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:11:34,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:11:34,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390543485] [2023-12-18 22:11:34,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:11:34,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:11:34,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:11:34,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:11:34,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:11:34,952 INFO L87 Difference]: Start difference. First operand 4075 states and 7029 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-18 22:11:36,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:11:36,962 INFO L93 Difference]: Finished difference Result 9483 states and 15673 transitions. [2023-12-18 22:11:36,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:11:36,962 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2023-12-18 22:11:36,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:11:36,979 INFO L225 Difference]: With dead ends: 9483 [2023-12-18 22:11:36,979 INFO L226 Difference]: Without dead ends: 7542 [2023-12-18 22:11:36,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:11:36,985 INFO L413 NwaCegarLoop]: 4265 mSDtfsCounter, 4927 mSDsluCounter, 16828 mSDsCounter, 0 mSdLazyCounter, 2612 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4940 SdHoareTripleChecker+Valid, 21093 SdHoareTripleChecker+Invalid, 2667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-18 22:11:36,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4940 Valid, 21093 Invalid, 2667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2612 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-18 22:11:36,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7542 states. [2023-12-18 22:11:37,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7542 to 5746. [2023-12-18 22:11:37,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5746 states, 5365 states have (on average 1.6857409133271202) internal successors, (9044), 5383 states have internal predecessors, (9044), 261 states have call successors, (261), 102 states have call predecessors, (261), 118 states have return successors, (358), 276 states have call predecessors, (358), 261 states have call successors, (358) [2023-12-18 22:11:37,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5746 states to 5746 states and 9663 transitions. [2023-12-18 22:11:37,131 INFO L78 Accepts]: Start accepts. Automaton has 5746 states and 9663 transitions. Word has length 111 [2023-12-18 22:11:37,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:11:37,132 INFO L495 AbstractCegarLoop]: Abstraction has 5746 states and 9663 transitions. [2023-12-18 22:11:37,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-18 22:11:37,132 INFO L276 IsEmpty]: Start isEmpty. Operand 5746 states and 9663 transitions. [2023-12-18 22:11:37,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-18 22:11:37,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:11:37,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:11:37,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-18 22:11:37,135 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:11:37,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:11:37,135 INFO L85 PathProgramCache]: Analyzing trace with hash 568554518, now seen corresponding path program 1 times [2023-12-18 22:11:37,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:11:37,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239393817] [2023-12-18 22:11:37,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:11:37,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:11:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:37,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:11:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:37,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-18 22:11:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:37,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-18 22:11:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:37,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 22:11:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:37,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 22:11:37,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:37,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:11:37,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:11:37,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239393817] [2023-12-18 22:11:37,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239393817] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:11:37,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:11:37,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:11:37,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032887441] [2023-12-18 22:11:37,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:11:37,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:11:37,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:11:37,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:11:37,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:11:37,262 INFO L87 Difference]: Start difference. First operand 5746 states and 9663 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-18 22:11:39,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:11:39,355 INFO L93 Difference]: Finished difference Result 15876 states and 25869 transitions. [2023-12-18 22:11:39,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:11:39,356 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2023-12-18 22:11:39,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:11:39,380 INFO L225 Difference]: With dead ends: 15876 [2023-12-18 22:11:39,381 INFO L226 Difference]: Without dead ends: 12264 [2023-12-18 22:11:39,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:11:39,389 INFO L413 NwaCegarLoop]: 4266 mSDtfsCounter, 5060 mSDsluCounter, 16831 mSDsCounter, 0 mSdLazyCounter, 2203 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5082 SdHoareTripleChecker+Valid, 21097 SdHoareTripleChecker+Invalid, 2259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-18 22:11:39,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5082 Valid, 21097 Invalid, 2259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 2203 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-18 22:11:39,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12264 states. [2023-12-18 22:11:39,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12264 to 9127. [2023-12-18 22:11:39,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9127 states, 8410 states have (on average 1.641141498216409) internal successors, (13802), 8444 states have internal predecessors, (13802), 485 states have call successors, (485), 198 states have call predecessors, (485), 230 states have return successors, (760), 516 states have call predecessors, (760), 485 states have call successors, (760) [2023-12-18 22:11:39,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9127 states to 9127 states and 15047 transitions. [2023-12-18 22:11:39,651 INFO L78 Accepts]: Start accepts. Automaton has 9127 states and 15047 transitions. Word has length 111 [2023-12-18 22:11:39,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:11:39,651 INFO L495 AbstractCegarLoop]: Abstraction has 9127 states and 15047 transitions. [2023-12-18 22:11:39,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-18 22:11:39,651 INFO L276 IsEmpty]: Start isEmpty. Operand 9127 states and 15047 transitions. [2023-12-18 22:11:39,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-18 22:11:39,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:11:39,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:11:39,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-18 22:11:39,657 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:11:39,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:11:39,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1849929960, now seen corresponding path program 1 times [2023-12-18 22:11:39,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:11:39,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994297280] [2023-12-18 22:11:39,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:11:39,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:11:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:39,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:11:39,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:39,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-18 22:11:39,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:39,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-18 22:11:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:39,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 22:11:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:39,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 22:11:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:39,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:11:39,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:11:39,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994297280] [2023-12-18 22:11:39,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994297280] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:11:39,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:11:39,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:11:39,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759616185] [2023-12-18 22:11:39,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:11:39,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:11:39,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:11:39,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:11:39,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:11:39,771 INFO L87 Difference]: Start difference. First operand 9127 states and 15047 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-18 22:11:41,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:11:41,909 INFO L93 Difference]: Finished difference Result 28527 states and 46239 transitions. [2023-12-18 22:11:41,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:11:41,909 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2023-12-18 22:11:41,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:11:41,959 INFO L225 Difference]: With dead ends: 28527 [2023-12-18 22:11:41,959 INFO L226 Difference]: Without dead ends: 21534 [2023-12-18 22:11:41,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:11:41,976 INFO L413 NwaCegarLoop]: 4266 mSDtfsCounter, 5024 mSDsluCounter, 16831 mSDsCounter, 0 mSdLazyCounter, 2190 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5046 SdHoareTripleChecker+Valid, 21097 SdHoareTripleChecker+Invalid, 2246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-18 22:11:41,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5046 Valid, 21097 Invalid, 2246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 2190 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-18 22:11:41,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21534 states. [2023-12-18 22:11:42,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21534 to 15888. [2023-12-18 22:11:42,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15888 states, 14515 states have (on average 1.608542886668963) internal successors, (23348), 14581 states have internal predecessors, (23348), 917 states have call successors, (917), 390 states have call predecessors, (917), 454 states have return successors, (1710), 980 states have call predecessors, (1710), 917 states have call successors, (1710) [2023-12-18 22:11:42,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15888 states to 15888 states and 25975 transitions. [2023-12-18 22:11:42,478 INFO L78 Accepts]: Start accepts. Automaton has 15888 states and 25975 transitions. Word has length 111 [2023-12-18 22:11:42,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:11:42,478 INFO L495 AbstractCegarLoop]: Abstraction has 15888 states and 25975 transitions. [2023-12-18 22:11:42,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-18 22:11:42,478 INFO L276 IsEmpty]: Start isEmpty. Operand 15888 states and 25975 transitions. [2023-12-18 22:11:42,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-18 22:11:42,486 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:11:42,486 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:11:42,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-18 22:11:42,486 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:11:42,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:11:42,487 INFO L85 PathProgramCache]: Analyzing trace with hash 565906390, now seen corresponding path program 1 times [2023-12-18 22:11:42,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:11:42,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559146141] [2023-12-18 22:11:42,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:11:42,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:11:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:42,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:11:42,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:42,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-18 22:11:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:42,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-18 22:11:42,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:42,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 22:11:42,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:42,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 22:11:42,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:42,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:11:42,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:11:42,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559146141] [2023-12-18 22:11:42,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559146141] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:11:42,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:11:42,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:11:42,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457571258] [2023-12-18 22:11:42,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:11:42,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:11:42,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:11:42,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:11:42,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:11:42,605 INFO L87 Difference]: Start difference. First operand 15888 states and 25975 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-18 22:11:45,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:11:45,208 INFO L93 Difference]: Finished difference Result 53350 states and 86797 transitions. [2023-12-18 22:11:45,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:11:45,209 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2023-12-18 22:11:45,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:11:45,309 INFO L225 Difference]: With dead ends: 53350 [2023-12-18 22:11:45,309 INFO L226 Difference]: Without dead ends: 39596 [2023-12-18 22:11:45,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:11:45,340 INFO L413 NwaCegarLoop]: 4266 mSDtfsCounter, 4898 mSDsluCounter, 16831 mSDsCounter, 0 mSdLazyCounter, 2436 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4911 SdHoareTripleChecker+Valid, 21097 SdHoareTripleChecker+Invalid, 2491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-18 22:11:45,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4911 Valid, 21097 Invalid, 2491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2436 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-18 22:11:45,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39596 states. [2023-12-18 22:11:46,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39596 to 29409. [2023-12-18 22:11:46,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29409 states, 26756 states have (on average 1.5885035132306773) internal successors, (42502), 26886 states have internal predecessors, (42502), 1749 states have call successors, (1749), 774 states have call predecessors, (1749), 902 states have return successors, (4064), 1876 states have call predecessors, (4064), 1749 states have call successors, (4064) [2023-12-18 22:11:46,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29409 states to 29409 states and 48315 transitions. [2023-12-18 22:11:46,376 INFO L78 Accepts]: Start accepts. Automaton has 29409 states and 48315 transitions. Word has length 111 [2023-12-18 22:11:46,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:11:46,377 INFO L495 AbstractCegarLoop]: Abstraction has 29409 states and 48315 transitions. [2023-12-18 22:11:46,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-18 22:11:46,377 INFO L276 IsEmpty]: Start isEmpty. Operand 29409 states and 48315 transitions. [2023-12-18 22:11:46,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-18 22:11:46,393 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:11:46,393 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:11:46,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-18 22:11:46,393 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:11:46,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:11:46,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1890762584, now seen corresponding path program 1 times [2023-12-18 22:11:46,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:11:46,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099562051] [2023-12-18 22:11:46,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:11:46,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:11:46,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:46,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:11:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:46,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-18 22:11:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:46,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-18 22:11:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:46,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 22:11:46,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:46,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 22:11:46,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:46,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:11:46,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:11:46,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099562051] [2023-12-18 22:11:46,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099562051] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:11:46,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:11:46,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:11:46,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551731879] [2023-12-18 22:11:46,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:11:46,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:11:46,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:11:46,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:11:46,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:11:46,505 INFO L87 Difference]: Start difference. First operand 29409 states and 48315 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-18 22:11:49,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:11:49,570 INFO L93 Difference]: Finished difference Result 102037 states and 168195 transitions. [2023-12-18 22:11:49,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:11:49,571 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2023-12-18 22:11:49,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:11:49,788 INFO L225 Difference]: With dead ends: 102037 [2023-12-18 22:11:49,788 INFO L226 Difference]: Without dead ends: 74762 [2023-12-18 22:11:49,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:11:49,864 INFO L413 NwaCegarLoop]: 4266 mSDtfsCounter, 4958 mSDsluCounter, 16831 mSDsCounter, 0 mSdLazyCounter, 2159 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4980 SdHoareTripleChecker+Valid, 21097 SdHoareTripleChecker+Invalid, 2215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-18 22:11:49,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4980 Valid, 21097 Invalid, 2215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 2159 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-18 22:11:49,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74762 states. [2023-12-18 22:11:51,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74762 to 56450. [2023-12-18 22:11:51,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56450 states, 51301 states have (on average 1.57766905128555) internal successors, (80936), 51559 states have internal predecessors, (80936), 3349 states have call successors, (3349), 1542 states have call predecessors, (3349), 1798 states have return successors, (10166), 3604 states have call predecessors, (10166), 3349 states have call successors, (10166) [2023-12-18 22:11:52,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56450 states to 56450 states and 94451 transitions. [2023-12-18 22:11:52,135 INFO L78 Accepts]: Start accepts. Automaton has 56450 states and 94451 transitions. Word has length 111 [2023-12-18 22:11:52,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:11:52,136 INFO L495 AbstractCegarLoop]: Abstraction has 56450 states and 94451 transitions. [2023-12-18 22:11:52,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-18 22:11:52,136 INFO L276 IsEmpty]: Start isEmpty. Operand 56450 states and 94451 transitions. [2023-12-18 22:11:52,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-18 22:11:52,169 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:11:52,169 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:11:52,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-18 22:11:52,169 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:11:52,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:11:52,169 INFO L85 PathProgramCache]: Analyzing trace with hash -837446762, now seen corresponding path program 1 times [2023-12-18 22:11:52,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:11:52,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244555418] [2023-12-18 22:11:52,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:11:52,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:11:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:52,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:11:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:52,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-18 22:11:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:52,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-18 22:11:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:52,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 22:11:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:52,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 22:11:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:52,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:11:52,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:11:52,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244555418] [2023-12-18 22:11:52,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244555418] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:11:52,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:11:52,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:11:52,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491942604] [2023-12-18 22:11:52,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:11:52,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:11:52,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:11:52,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:11:52,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:11:52,459 INFO L87 Difference]: Start difference. First operand 56450 states and 94451 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-18 22:11:56,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:11:56,983 INFO L93 Difference]: Finished difference Result 194162 states and 328373 transitions. [2023-12-18 22:11:56,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:11:56,983 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2023-12-18 22:11:56,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:11:57,423 INFO L225 Difference]: With dead ends: 194162 [2023-12-18 22:11:57,423 INFO L226 Difference]: Without dead ends: 139846 [2023-12-18 22:11:57,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:11:57,544 INFO L413 NwaCegarLoop]: 4266 mSDtfsCounter, 4880 mSDsluCounter, 16831 mSDsCounter, 0 mSdLazyCounter, 2130 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4902 SdHoareTripleChecker+Valid, 21097 SdHoareTripleChecker+Invalid, 2187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-18 22:11:57,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4902 Valid, 21097 Invalid, 2187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2130 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-18 22:11:57,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139846 states. [2023-12-18 22:12:01,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139846 to 110788. [2023-12-18 22:12:02,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110788 states, 100775 states have (on average 1.5735251798561152) internal successors, (158572), 101289 states have internal predecessors, (158572), 6421 states have call successors, (6421), 3078 states have call predecessors, (6421), 3590 states have return successors, (26616), 6932 states have call predecessors, (26616), 6421 states have call successors, (26616) [2023-12-18 22:12:02,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110788 states to 110788 states and 191609 transitions. [2023-12-18 22:12:02,613 INFO L78 Accepts]: Start accepts. Automaton has 110788 states and 191609 transitions. Word has length 111 [2023-12-18 22:12:02,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:12:02,613 INFO L495 AbstractCegarLoop]: Abstraction has 110788 states and 191609 transitions. [2023-12-18 22:12:02,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-18 22:12:02,614 INFO L276 IsEmpty]: Start isEmpty. Operand 110788 states and 191609 transitions. [2023-12-18 22:12:02,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-18 22:12:02,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:12:02,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:12:02,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-18 22:12:02,671 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:12:02,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:12:02,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1979949228, now seen corresponding path program 1 times [2023-12-18 22:12:02,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:12:02,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866347258] [2023-12-18 22:12:02,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:12:02,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:12:02,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:02,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:12:02,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:02,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-18 22:12:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:02,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-18 22:12:02,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:02,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 22:12:02,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:02,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 22:12:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:02,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:12:02,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:12:02,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866347258] [2023-12-18 22:12:02,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866347258] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:12:02,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:12:02,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:12:02,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614287282] [2023-12-18 22:12:02,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:12:02,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:12:02,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:12:02,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:12:02,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:12:02,760 INFO L87 Difference]: Start difference. First operand 110788 states and 191609 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-18 22:12:09,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:12:09,746 INFO L93 Difference]: Finished difference Result 320963 states and 547167 transitions. [2023-12-18 22:12:09,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-18 22:12:09,746 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2023-12-18 22:12:09,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:12:10,511 INFO L225 Difference]: With dead ends: 320963 [2023-12-18 22:12:10,511 INFO L226 Difference]: Without dead ends: 212310 [2023-12-18 22:12:10,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2023-12-18 22:12:10,684 INFO L413 NwaCegarLoop]: 4157 mSDtfsCounter, 4927 mSDsluCounter, 16518 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4949 SdHoareTripleChecker+Valid, 20675 SdHoareTripleChecker+Invalid, 1654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-18 22:12:10,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4949 Valid, 20675 Invalid, 1654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-18 22:12:10,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212310 states. [2023-12-18 22:12:16,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212310 to 166117. [2023-12-18 22:12:16,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166117 states, 150961 states have (on average 1.5600916793079007) internal successors, (235513), 151988 states have internal predecessors, (235513), 9766 states have call successors, (9766), 4620 states have call predecessors, (9766), 5388 states have return successors, (36523), 10020 states have call predecessors, (36523), 9766 states have call successors, (36523) [2023-12-18 22:12:17,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166117 states to 166117 states and 281802 transitions. [2023-12-18 22:12:17,398 INFO L78 Accepts]: Start accepts. Automaton has 166117 states and 281802 transitions. Word has length 111 [2023-12-18 22:12:17,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:12:17,399 INFO L495 AbstractCegarLoop]: Abstraction has 166117 states and 281802 transitions. [2023-12-18 22:12:17,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-18 22:12:17,399 INFO L276 IsEmpty]: Start isEmpty. Operand 166117 states and 281802 transitions. [2023-12-18 22:12:17,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-18 22:12:17,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:12:17,671 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:12:17,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-18 22:12:17,672 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:12:17,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:12:17,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1811441291, now seen corresponding path program 1 times [2023-12-18 22:12:17,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:12:17,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454827293] [2023-12-18 22:12:17,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:12:17,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:12:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:17,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:12:17,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:17,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-18 22:12:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:17,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-18 22:12:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:17,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 22:12:17,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:17,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 22:12:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:17,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-18 22:12:17,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:17,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:12:17,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:17,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-12-18 22:12:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:17,801 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-18 22:12:17,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:12:17,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454827293] [2023-12-18 22:12:17,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454827293] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:12:17,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715421926] [2023-12-18 22:12:17,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:12:17,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:12:17,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:12:17,804 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) [2023-12-18 22:12:17,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-18 22:12:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:17,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 812 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-18 22:12:17,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:12:18,034 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-18 22:12:18,035 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:12:18,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715421926] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:12:18,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:12:18,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-18 22:12:18,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612576111] [2023-12-18 22:12:18,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:12:18,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:12:18,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:12:18,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:12:18,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:12:18,036 INFO L87 Difference]: Start difference. First operand 166117 states and 281802 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 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) [2023-12-18 22:12:27,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:12:27,653 INFO L93 Difference]: Finished difference Result 491768 states and 838218 transitions. [2023-12-18 22:12:27,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:12:27,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 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 179 [2023-12-18 22:12:27,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:12:28,852 INFO L225 Difference]: With dead ends: 491768 [2023-12-18 22:12:28,853 INFO L226 Difference]: Without dead ends: 327786 [2023-12-18 22:12:29,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:12:29,212 INFO L413 NwaCegarLoop]: 4289 mSDtfsCounter, 4262 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4262 SdHoareTripleChecker+Valid, 4595 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:12:29,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4262 Valid, 4595 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:12:29,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327786 states. [2023-12-18 22:12:39,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327786 to 327014. [2023-12-18 22:12:40,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327014 states, 297094 states have (on average 1.555208115949834) internal successors, (462043), 299146 states have internal predecessors, (462043), 19142 states have call successors, (19142), 9240 states have call predecessors, (19142), 10776 states have return successors, (72145), 19139 states have call predecessors, (72145), 19142 states have call successors, (72145) [2023-12-18 22:12:41,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327014 states to 327014 states and 553330 transitions. [2023-12-18 22:12:41,717 INFO L78 Accepts]: Start accepts. Automaton has 327014 states and 553330 transitions. Word has length 179 [2023-12-18 22:12:41,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:12:41,717 INFO L495 AbstractCegarLoop]: Abstraction has 327014 states and 553330 transitions. [2023-12-18 22:12:41,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 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) [2023-12-18 22:12:41,718 INFO L276 IsEmpty]: Start isEmpty. Operand 327014 states and 553330 transitions. [2023-12-18 22:12:42,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-18 22:12:42,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:12:42,463 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:12:42,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-18 22:12:42,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-18 22:12:42,675 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:12:42,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:12:42,675 INFO L85 PathProgramCache]: Analyzing trace with hash 2054622793, now seen corresponding path program 1 times [2023-12-18 22:12:42,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:12:42,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938965968] [2023-12-18 22:12:42,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:12:42,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:12:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:42,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:12:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:42,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-18 22:12:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:42,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-18 22:12:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:42,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 22:12:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:42,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 22:12:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:42,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-18 22:12:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:42,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:12:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:42,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-12-18 22:12:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:42,840 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-18 22:12:42,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:12:42,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938965968] [2023-12-18 22:12:42,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938965968] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:12:42,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81449882] [2023-12-18 22:12:42,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:12:42,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:12:42,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:12:42,842 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) [2023-12-18 22:12:42,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-18 22:12:42,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:42,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-18 22:12:43,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:12:43,069 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-18 22:12:43,070 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:12:43,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81449882] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:12:43,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:12:43,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-18 22:12:43,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145256238] [2023-12-18 22:12:43,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:12:43,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:12:43,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:12:43,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:12:43,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:12:43,071 INFO L87 Difference]: Start difference. First operand 327014 states and 553330 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 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)