/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/systemc/token_ring.09.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 11:17:57,464 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 11:17:57,507 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 11:17:57,510 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 11:17:57,510 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 11:17:57,537 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 11:17:57,538 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 11:17:57,538 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 11:17:57,538 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 11:17:57,538 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 11:17:57,539 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 11:17:57,539 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 11:17:57,539 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 11:17:57,539 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 11:17:57,540 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 11:17:57,540 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 11:17:57,540 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 11:17:57,540 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 11:17:57,541 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 11:17:57,541 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 11:17:57,541 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 11:17:57,543 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 11:17:57,544 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 11:17:57,544 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 11:17:57,546 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 11:17:57,546 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 11:17:57,547 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 11:17:57,547 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 11:17:57,548 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 11:17:57,548 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 11:17:57,548 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 11:17:57,549 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 11:17:57,549 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:17:57,549 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 11:17:57,549 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 11:17:57,549 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 11:17:57,549 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 11:17:57,549 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 11:17:57,549 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 11:17:57,550 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 11:17:57,550 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 11:17:57,550 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 11:17:57,550 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 11:17:57,550 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 11:17:57,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 11:17:57,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 11:17:57,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 11:17:57,739 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 11:17:57,739 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 11:17:57,740 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.09.cil-1.c [2023-12-21 11:17:58,692 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 11:17:58,860 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 11:17:58,861 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.09.cil-1.c [2023-12-21 11:17:58,869 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7792fcd67/ee37501eff6544d9a3cd44bd3030dc6a/FLAG0882a751a [2023-12-21 11:17:58,893 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7792fcd67/ee37501eff6544d9a3cd44bd3030dc6a [2023-12-21 11:17:58,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 11:17:58,896 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 11:17:58,896 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 11:17:58,897 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 11:17:58,900 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 11:17:58,900 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:17:58" (1/1) ... [2023-12-21 11:17:58,901 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f5cd668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:58, skipping insertion in model container [2023-12-21 11:17:58,901 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:17:58" (1/1) ... [2023-12-21 11:17:58,939 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 11:17:59,049 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.09.cil-1.c[671,684] [2023-12-21 11:17:59,111 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:17:59,119 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 11:17:59,126 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.09.cil-1.c[671,684] [2023-12-21 11:17:59,162 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:17:59,185 INFO L206 MainTranslator]: Completed translation [2023-12-21 11:17:59,186 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:59 WrapperNode [2023-12-21 11:17:59,186 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 11:17:59,187 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 11:17:59,187 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 11:17:59,187 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 11:17:59,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:59" (1/1) ... [2023-12-21 11:17:59,215 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:59" (1/1) ... [2023-12-21 11:17:59,278 INFO L138 Inliner]: procedures = 46, calls = 58, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 699 [2023-12-21 11:17:59,278 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 11:17:59,279 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 11:17:59,279 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 11:17:59,279 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 11:17:59,287 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:59" (1/1) ... [2023-12-21 11:17:59,287 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:59" (1/1) ... [2023-12-21 11:17:59,294 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:59" (1/1) ... [2023-12-21 11:17:59,317 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]. [2023-12-21 11:17:59,317 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:59" (1/1) ... [2023-12-21 11:17:59,317 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:59" (1/1) ... [2023-12-21 11:17:59,324 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:59" (1/1) ... [2023-12-21 11:17:59,331 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:59" (1/1) ... [2023-12-21 11:17:59,332 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:59" (1/1) ... [2023-12-21 11:17:59,334 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:59" (1/1) ... [2023-12-21 11:17:59,337 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 11:17:59,338 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 11:17:59,338 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 11:17:59,338 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 11:17:59,338 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:59" (1/1) ... [2023-12-21 11:17:59,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:17:59,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:17:59,372 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) [2023-12-21 11:17:59,419 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 [2023-12-21 11:17:59,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 11:17:59,435 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-21 11:17:59,435 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-21 11:17:59,435 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-21 11:17:59,436 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-21 11:17:59,436 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-21 11:17:59,437 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-21 11:17:59,437 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-21 11:17:59,438 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-21 11:17:59,438 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-21 11:17:59,438 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-21 11:17:59,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 11:17:59,438 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-21 11:17:59,439 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-21 11:17:59,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 11:17:59,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 11:17:59,535 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 11:17:59,536 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 11:17:59,945 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 11:17:59,997 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 11:17:59,997 INFO L309 CfgBuilder]: Removed 12 assume(true) statements. [2023-12-21 11:17:59,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:17:59 BoogieIcfgContainer [2023-12-21 11:17:59,998 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 11:18:00,000 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 11:18:00,000 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 11:18:00,003 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 11:18:00,003 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:17:58" (1/3) ... [2023-12-21 11:18:00,004 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c00baca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:18:00, skipping insertion in model container [2023-12-21 11:18:00,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:59" (2/3) ... [2023-12-21 11:18:00,005 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c00baca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:18:00, skipping insertion in model container [2023-12-21 11:18:00,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:17:59" (3/3) ... [2023-12-21 11:18:00,006 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.09.cil-1.c [2023-12-21 11:18:00,017 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 11:18:00,017 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 11:18:00,063 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 11:18:00,067 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;@1b69f17b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 11:18:00,068 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 11:18:00,073 INFO L276 IsEmpty]: Start isEmpty. Operand has 279 states, 248 states have (on average 1.7258064516129032) internal successors, (428), 250 states have internal predecessors, (428), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-21 11:18:00,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 11:18:00,090 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:18:00,091 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:18:00,091 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:18:00,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:18:00,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1075224052, now seen corresponding path program 1 times [2023-12-21 11:18:00,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:18:00,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350729179] [2023-12-21 11:18:00,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:18:00,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:18:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:00,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:18:00,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:00,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 11:18:00,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:00,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:18:00,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:00,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 11:18:00,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:00,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 11:18:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:00,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:18:00,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:18:00,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350729179] [2023-12-21 11:18:00,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350729179] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:18:00,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:18:00,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:18:00,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697499956] [2023-12-21 11:18:00,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:18:00,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:18:00,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:18:00,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:18:00,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:18:00,542 INFO L87 Difference]: Start difference. First operand has 279 states, 248 states have (on average 1.7258064516129032) internal successors, (428), 250 states have internal predecessors, (428), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2023-12-21 11:18:01,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:18:01,661 INFO L93 Difference]: Finished difference Result 648 states and 1109 transitions. [2023-12-21 11:18:01,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 11:18:01,663 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 3 states have internal predecessors, (120), 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 130 [2023-12-21 11:18:01,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:18:01,683 INFO L225 Difference]: With dead ends: 648 [2023-12-21 11:18:01,683 INFO L226 Difference]: Without dead ends: 377 [2023-12-21 11:18:01,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 11:18:01,688 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 760 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 11:18:01,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 502 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 11:18:01,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-12-21 11:18:01,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 277. [2023-12-21 11:18:01,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 247 states have (on average 1.6194331983805668) internal successors, (400), 248 states have internal predecessors, (400), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-21 11:18:01,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 446 transitions. [2023-12-21 11:18:01,730 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 446 transitions. Word has length 130 [2023-12-21 11:18:01,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:18:01,730 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 446 transitions. [2023-12-21 11:18:01,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2023-12-21 11:18:01,731 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 446 transitions. [2023-12-21 11:18:01,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 11:18:01,733 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:18:01,733 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:18:01,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 11:18:01,733 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:18:01,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:18:01,734 INFO L85 PathProgramCache]: Analyzing trace with hash 206948234, now seen corresponding path program 1 times [2023-12-21 11:18:01,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:18:01,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464469250] [2023-12-21 11:18:01,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:18:01,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:18:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:01,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:18:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:01,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 11:18:01,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:01,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:18:01,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:01,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 11:18:01,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:01,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 11:18:01,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:01,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:18:01,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:18:01,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464469250] [2023-12-21 11:18:01,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464469250] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:18:01,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:18:01,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:18:01,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285926827] [2023-12-21 11:18:01,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:18:01,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:18:01,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:18:01,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:18:01,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:18:01,959 INFO L87 Difference]: Start difference. First operand 277 states and 446 transitions. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2023-12-21 11:18:03,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:18:03,451 INFO L93 Difference]: Finished difference Result 1014 states and 1670 transitions. [2023-12-21 11:18:03,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:18:03,452 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 4 states have internal predecessors, (120), 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 130 [2023-12-21 11:18:03,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:18:03,456 INFO L225 Difference]: With dead ends: 1014 [2023-12-21 11:18:03,456 INFO L226 Difference]: Without dead ends: 752 [2023-12-21 11:18:03,457 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 [2023-12-21 11:18:03,458 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 1150 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 1787 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 1883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:18:03,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1166 Valid, 841 Invalid, 1883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1787 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 11:18:03,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2023-12-21 11:18:03,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 553. [2023-12-21 11:18:03,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 498 states have (on average 1.6285140562248996) internal successors, (811), 500 states have internal predecessors, (811), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2023-12-21 11:18:03,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 896 transitions. [2023-12-21 11:18:03,501 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 896 transitions. Word has length 130 [2023-12-21 11:18:03,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:18:03,501 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 896 transitions. [2023-12-21 11:18:03,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2023-12-21 11:18:03,501 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 896 transitions. [2023-12-21 11:18:03,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 11:18:03,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:18:03,503 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:18:03,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 11:18:03,503 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:18:03,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:18:03,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1701342578, now seen corresponding path program 1 times [2023-12-21 11:18:03,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:18:03,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873761910] [2023-12-21 11:18:03,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:18:03,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:18:03,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:03,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:18:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:03,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 11:18:03,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:03,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:18:03,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:03,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 11:18:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:03,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 11:18:03,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:03,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:18:03,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:18:03,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873761910] [2023-12-21 11:18:03,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873761910] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:18:03,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:18:03,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:18:03,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127150693] [2023-12-21 11:18:03,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:18:03,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:18:03,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:18:03,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:18:03,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:18:03,697 INFO L87 Difference]: Start difference. First operand 553 states and 896 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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) [2023-12-21 11:18:06,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:18:06,117 INFO L93 Difference]: Finished difference Result 1679 states and 2764 transitions. [2023-12-21 11:18:06,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 11:18:06,118 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 130 [2023-12-21 11:18:06,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:18:06,127 INFO L225 Difference]: With dead ends: 1679 [2023-12-21 11:18:06,127 INFO L226 Difference]: Without dead ends: 1141 [2023-12-21 11:18:06,129 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 [2023-12-21 11:18:06,129 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 1173 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 2912 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 2967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-21 11:18:06,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1189 Valid, 1591 Invalid, 2967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2912 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-21 11:18:06,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2023-12-21 11:18:06,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 808. [2023-12-21 11:18:06,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 728 states have (on average 1.620879120879121) internal successors, (1180), 731 states have internal predecessors, (1180), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2023-12-21 11:18:06,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1303 transitions. [2023-12-21 11:18:06,185 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1303 transitions. Word has length 130 [2023-12-21 11:18:06,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:18:06,185 INFO L495 AbstractCegarLoop]: Abstraction has 808 states and 1303 transitions. [2023-12-21 11:18:06,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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) [2023-12-21 11:18:06,186 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1303 transitions. [2023-12-21 11:18:06,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 11:18:06,188 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:18:06,188 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:18:06,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 11:18:06,188 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:18:06,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:18:06,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1229986228, now seen corresponding path program 1 times [2023-12-21 11:18:06,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:18:06,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013435927] [2023-12-21 11:18:06,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:18:06,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:18:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:06,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:18:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:06,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 11:18:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:06,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:18:06,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:06,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 11:18:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:06,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 11:18:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:06,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:18:06,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:18:06,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013435927] [2023-12-21 11:18:06,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013435927] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:18:06,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:18:06,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:18:06,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904489677] [2023-12-21 11:18:06,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:18:06,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:18:06,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:18:06,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:18:06,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:18:06,435 INFO L87 Difference]: Start difference. First operand 808 states and 1303 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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) [2023-12-21 11:18:08,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:18:08,910 INFO L93 Difference]: Finished difference Result 2653 states and 4357 transitions. [2023-12-21 11:18:08,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 11:18:08,910 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 130 [2023-12-21 11:18:08,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:18:08,917 INFO L225 Difference]: With dead ends: 2653 [2023-12-21 11:18:08,917 INFO L226 Difference]: Without dead ends: 1860 [2023-12-21 11:18:08,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-21 11:18:08,919 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 1171 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 2908 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 1589 SdHoareTripleChecker+Invalid, 2965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-21 11:18:08,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1187 Valid, 1589 Invalid, 2965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2908 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-21 11:18:08,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2023-12-21 11:18:09,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1319. [2023-12-21 11:18:09,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1189 states have (on average 1.6139613120269134) internal successors, (1919), 1194 states have internal predecessors, (1919), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2023-12-21 11:18:09,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 2122 transitions. [2023-12-21 11:18:09,022 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 2122 transitions. Word has length 130 [2023-12-21 11:18:09,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:18:09,023 INFO L495 AbstractCegarLoop]: Abstraction has 1319 states and 2122 transitions. [2023-12-21 11:18:09,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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) [2023-12-21 11:18:09,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 2122 transitions. [2023-12-21 11:18:09,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 11:18:09,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:18:09,024 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:18:09,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 11:18:09,025 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:18:09,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:18:09,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1417618126, now seen corresponding path program 1 times [2023-12-21 11:18:09,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:18:09,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669528656] [2023-12-21 11:18:09,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:18:09,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:18:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:09,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:18:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:09,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 11:18:09,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:09,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:18:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:09,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 11:18:09,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:09,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 11:18:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:09,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:18:09,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:18:09,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669528656] [2023-12-21 11:18:09,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669528656] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:18:09,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:18:09,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:18:09,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121693285] [2023-12-21 11:18:09,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:18:09,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:18:09,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:18:09,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:18:09,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:18:09,226 INFO L87 Difference]: Start difference. First operand 1319 states and 2122 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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) [2023-12-21 11:18:10,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:18:10,232 INFO L93 Difference]: Finished difference Result 3154 states and 5169 transitions. [2023-12-21 11:18:10,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:18:10,233 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 130 [2023-12-21 11:18:10,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:18:10,239 INFO L225 Difference]: With dead ends: 3154 [2023-12-21 11:18:10,239 INFO L226 Difference]: Without dead ends: 1850 [2023-12-21 11:18:10,242 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 [2023-12-21 11:18:10,246 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 963 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 1335 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 11:18:10,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [980 Valid, 685 Invalid, 1417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1335 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 11:18:10,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1850 states. [2023-12-21 11:18:10,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1850 to 1319. [2023-12-21 11:18:10,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1189 states have (on average 1.6097560975609757) internal successors, (1914), 1194 states have internal predecessors, (1914), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2023-12-21 11:18:10,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 2117 transitions. [2023-12-21 11:18:10,297 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 2117 transitions. Word has length 130 [2023-12-21 11:18:10,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:18:10,297 INFO L495 AbstractCegarLoop]: Abstraction has 1319 states and 2117 transitions. [2023-12-21 11:18:10,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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) [2023-12-21 11:18:10,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 2117 transitions. [2023-12-21 11:18:10,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 11:18:10,299 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:18:10,299 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:18:10,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 11:18:10,299 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:18:10,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:18:10,299 INFO L85 PathProgramCache]: Analyzing trace with hash -713732596, now seen corresponding path program 1 times [2023-12-21 11:18:10,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:18:10,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088461933] [2023-12-21 11:18:10,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:18:10,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:18:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:10,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:18:10,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:10,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 11:18:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:10,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:18:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:10,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 11:18:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:10,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 11:18:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:10,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:18:10,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:18:10,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088461933] [2023-12-21 11:18:10,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088461933] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:18:10,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:18:10,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:18:10,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397082802] [2023-12-21 11:18:10,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:18:10,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:18:10,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:18:10,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:18:10,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:18:10,440 INFO L87 Difference]: Start difference. First operand 1319 states and 2117 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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) [2023-12-21 11:18:11,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:18:11,608 INFO L93 Difference]: Finished difference Result 3148 states and 5143 transitions. [2023-12-21 11:18:11,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:18:11,609 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 130 [2023-12-21 11:18:11,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:18:11,614 INFO L225 Difference]: With dead ends: 3148 [2023-12-21 11:18:11,614 INFO L226 Difference]: Without dead ends: 1844 [2023-12-21 11:18:11,617 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 [2023-12-21 11:18:11,618 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 847 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 1520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 11:18:11,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 815 Invalid, 1520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 11:18:11,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2023-12-21 11:18:11,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1319. [2023-12-21 11:18:11,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1189 states have (on average 1.6055508830950378) internal successors, (1909), 1194 states have internal predecessors, (1909), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2023-12-21 11:18:11,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 2112 transitions. [2023-12-21 11:18:11,667 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 2112 transitions. Word has length 130 [2023-12-21 11:18:11,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:18:11,667 INFO L495 AbstractCegarLoop]: Abstraction has 1319 states and 2112 transitions. [2023-12-21 11:18:11,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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) [2023-12-21 11:18:11,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 2112 transitions. [2023-12-21 11:18:11,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 11:18:11,668 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:18:11,668 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:18:11,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 11:18:11,668 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:18:11,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:18:11,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1752317170, now seen corresponding path program 1 times [2023-12-21 11:18:11,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:18:11,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108156066] [2023-12-21 11:18:11,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:18:11,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:18:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:11,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:18:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:11,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 11:18:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:11,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:18:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:11,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 11:18:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:11,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 11:18:11,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:11,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:18:11,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:18:11,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108156066] [2023-12-21 11:18:11,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108156066] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:18:11,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:18:11,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:18:11,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435752012] [2023-12-21 11:18:11,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:18:11,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:18:11,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:18:11,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:18:11,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:18:11,832 INFO L87 Difference]: Start difference. First operand 1319 states and 2112 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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) [2023-12-21 11:18:13,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:18:13,878 INFO L93 Difference]: Finished difference Result 4501 states and 7316 transitions. [2023-12-21 11:18:13,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 11:18:13,878 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 130 [2023-12-21 11:18:13,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:18:13,889 INFO L225 Difference]: With dead ends: 4501 [2023-12-21 11:18:13,889 INFO L226 Difference]: Without dead ends: 3197 [2023-12-21 11:18:13,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-21 11:18:13,900 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 1240 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 2356 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1256 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 2443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 11:18:13,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1256 Valid, 1042 Invalid, 2443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2356 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 11:18:13,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3197 states. [2023-12-21 11:18:14,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3197 to 2355. [2023-12-21 11:18:14,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2355 states, 2125 states have (on average 1.5995294117647059) internal successors, (3399), 2134 states have internal predecessors, (3399), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2023-12-21 11:18:14,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 3768 transitions. [2023-12-21 11:18:14,054 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 3768 transitions. Word has length 130 [2023-12-21 11:18:14,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:18:14,056 INFO L495 AbstractCegarLoop]: Abstraction has 2355 states and 3768 transitions. [2023-12-21 11:18:14,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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) [2023-12-21 11:18:14,058 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 3768 transitions. [2023-12-21 11:18:14,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 11:18:14,060 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:18:14,061 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:18:14,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 11:18:14,061 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:18:14,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:18:14,062 INFO L85 PathProgramCache]: Analyzing trace with hash 400789648, now seen corresponding path program 1 times [2023-12-21 11:18:14,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:18:14,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016570952] [2023-12-21 11:18:14,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:18:14,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:18:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:14,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:18:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:14,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 11:18:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:14,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:18:14,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:14,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 11:18:14,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:14,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 11:18:14,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:14,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:18:14,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:18:14,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016570952] [2023-12-21 11:18:14,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016570952] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:18:14,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:18:14,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:18:14,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473543208] [2023-12-21 11:18:14,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:18:14,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:18:14,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:18:14,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:18:14,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:18:14,227 INFO L87 Difference]: Start difference. First operand 2355 states and 3768 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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) [2023-12-21 11:18:15,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:18:15,095 INFO L93 Difference]: Finished difference Result 5550 states and 9023 transitions. [2023-12-21 11:18:15,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:18:15,095 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 130 [2023-12-21 11:18:15,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:18:15,107 INFO L225 Difference]: With dead ends: 5550 [2023-12-21 11:18:15,107 INFO L226 Difference]: Without dead ends: 3210 [2023-12-21 11:18:15,112 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 [2023-12-21 11:18:15,112 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 964 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 1288 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 11:18:15,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [981 Valid, 685 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1288 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 11:18:15,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3210 states. [2023-12-21 11:18:15,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3210 to 2355. [2023-12-21 11:18:15,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2355 states, 2125 states have (on average 1.5952941176470588) internal successors, (3390), 2134 states have internal predecessors, (3390), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2023-12-21 11:18:15,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 3759 transitions. [2023-12-21 11:18:15,199 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 3759 transitions. Word has length 130 [2023-12-21 11:18:15,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:18:15,200 INFO L495 AbstractCegarLoop]: Abstraction has 2355 states and 3759 transitions. [2023-12-21 11:18:15,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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) [2023-12-21 11:18:15,200 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 3759 transitions. [2023-12-21 11:18:15,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 11:18:15,202 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:18:15,203 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:18:15,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 11:18:15,203 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:18:15,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:18:15,205 INFO L85 PathProgramCache]: Analyzing trace with hash -222491954, now seen corresponding path program 1 times [2023-12-21 11:18:15,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:18:15,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090408435] [2023-12-21 11:18:15,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:18:15,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:18:15,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:15,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:18:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:15,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 11:18:15,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:15,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:18:15,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:15,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 11:18:15,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:15,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 11:18:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:15,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:18:15,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:18:15,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090408435] [2023-12-21 11:18:15,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090408435] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:18:15,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:18:15,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:18:15,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746328161] [2023-12-21 11:18:15,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:18:15,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:18:15,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:18:15,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:18:15,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:18:15,375 INFO L87 Difference]: Start difference. First operand 2355 states and 3759 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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) [2023-12-21 11:18:17,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:18:17,768 INFO L93 Difference]: Finished difference Result 8225 states and 13306 transitions. [2023-12-21 11:18:17,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 11:18:17,769 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 130 [2023-12-21 11:18:17,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:18:17,812 INFO L225 Difference]: With dead ends: 8225 [2023-12-21 11:18:17,812 INFO L226 Difference]: Without dead ends: 5885 [2023-12-21 11:18:17,817 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 [2023-12-21 11:18:17,819 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 1149 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 2789 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1165 SdHoareTripleChecker+Valid, 1589 SdHoareTripleChecker+Invalid, 2846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-21 11:18:17,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1165 Valid, 1589 Invalid, 2846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2789 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-21 11:18:17,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5885 states. [2023-12-21 11:18:17,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5885 to 4437. [2023-12-21 11:18:17,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4437 states, 4007 states have (on average 1.5897179935113552) internal successors, (6370), 4024 states have internal predecessors, (6370), 311 states have call successors, (311), 102 states have call predecessors, (311), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2023-12-21 11:18:17,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4437 states to 4437 states and 7089 transitions. [2023-12-21 11:18:17,989 INFO L78 Accepts]: Start accepts. Automaton has 4437 states and 7089 transitions. Word has length 130 [2023-12-21 11:18:17,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:18:17,990 INFO L495 AbstractCegarLoop]: Abstraction has 4437 states and 7089 transitions. [2023-12-21 11:18:17,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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) [2023-12-21 11:18:17,990 INFO L276 IsEmpty]: Start isEmpty. Operand 4437 states and 7089 transitions. [2023-12-21 11:18:17,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 11:18:17,993 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:18:17,993 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:18:17,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 11:18:17,994 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:18:17,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:18:17,994 INFO L85 PathProgramCache]: Analyzing trace with hash -104050480, now seen corresponding path program 1 times [2023-12-21 11:18:17,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:18:17,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104231166] [2023-12-21 11:18:17,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:18:17,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:18:18,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:18,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:18:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:18,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 11:18:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:18,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:18:18,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:18,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 11:18:18,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:18,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 11:18:18,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:18,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:18:18,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:18:18,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104231166] [2023-12-21 11:18:18,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104231166] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:18:18,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:18:18,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:18:18,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561170516] [2023-12-21 11:18:18,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:18:18,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:18:18,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:18:18,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:18:18,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:18:18,148 INFO L87 Difference]: Start difference. First operand 4437 states and 7089 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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) [2023-12-21 11:18:20,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:18:20,664 INFO L93 Difference]: Finished difference Result 15689 states and 25418 transitions. [2023-12-21 11:18:20,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 11:18:20,665 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 130 [2023-12-21 11:18:20,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:18:20,695 INFO L225 Difference]: With dead ends: 15689 [2023-12-21 11:18:20,695 INFO L226 Difference]: Without dead ends: 11267 [2023-12-21 11:18:20,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-21 11:18:20,705 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 1148 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 2776 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 1589 SdHoareTripleChecker+Invalid, 2833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-21 11:18:20,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1164 Valid, 1589 Invalid, 2833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2776 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-21 11:18:20,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11267 states. [2023-12-21 11:18:20,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11267 to 8614. [2023-12-21 11:18:20,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8614 states, 7784 states have (on average 1.5863309352517985) internal successors, (12348), 7817 states have internal predecessors, (12348), 599 states have call successors, (599), 198 states have call predecessors, (599), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2023-12-21 11:18:20,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8614 states to 8614 states and 13821 transitions. [2023-12-21 11:18:20,969 INFO L78 Accepts]: Start accepts. Automaton has 8614 states and 13821 transitions. Word has length 130 [2023-12-21 11:18:20,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:18:20,969 INFO L495 AbstractCegarLoop]: Abstraction has 8614 states and 13821 transitions. [2023-12-21 11:18:20,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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) [2023-12-21 11:18:20,970 INFO L276 IsEmpty]: Start isEmpty. Operand 8614 states and 13821 transitions. [2023-12-21 11:18:20,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 11:18:20,974 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:18:20,974 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:18:20,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 11:18:20,974 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:18:20,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:18:20,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1285243534, now seen corresponding path program 1 times [2023-12-21 11:18:20,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:18:20,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788316469] [2023-12-21 11:18:20,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:18:20,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:18:20,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:21,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:18:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:21,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 11:18:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:21,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:18:21,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:21,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 11:18:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:21,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 11:18:21,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:21,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:18:21,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:18:21,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788316469] [2023-12-21 11:18:21,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788316469] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:18:21,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:18:21,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:18:21,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587273528] [2023-12-21 11:18:21,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:18:21,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:18:21,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:18:21,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:18:21,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:18:21,174 INFO L87 Difference]: Start difference. First operand 8614 states and 13821 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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) [2023-12-21 11:18:23,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:18:23,816 INFO L93 Difference]: Finished difference Result 34328 states and 55818 transitions. [2023-12-21 11:18:23,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 11:18:23,816 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 130 [2023-12-21 11:18:23,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:18:23,893 INFO L225 Difference]: With dead ends: 34328 [2023-12-21 11:18:23,893 INFO L226 Difference]: Without dead ends: 25729 [2023-12-21 11:18:23,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:18:23,918 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 1476 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 2753 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1582 SdHoareTripleChecker+Invalid, 2813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-21 11:18:23,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1582 Invalid, 2813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 2753 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-21 11:18:23,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25729 states. [2023-12-21 11:18:24,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25729 to 16935. [2023-12-21 11:18:24,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16935 states, 15337 states have (on average 1.5855773619351894) internal successors, (24318), 15402 states have internal predecessors, (24318), 1143 states have call successors, (1143), 390 states have call predecessors, (1143), 454 states have return successors, (1936), 1206 states have call predecessors, (1936), 1143 states have call successors, (1936) [2023-12-21 11:18:24,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16935 states to 16935 states and 27397 transitions. [2023-12-21 11:18:24,602 INFO L78 Accepts]: Start accepts. Automaton has 16935 states and 27397 transitions. Word has length 130 [2023-12-21 11:18:24,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:18:24,603 INFO L495 AbstractCegarLoop]: Abstraction has 16935 states and 27397 transitions. [2023-12-21 11:18:24,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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) [2023-12-21 11:18:24,603 INFO L276 IsEmpty]: Start isEmpty. Operand 16935 states and 27397 transitions. [2023-12-21 11:18:24,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 11:18:24,613 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:18:24,613 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:18:24,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 11:18:24,613 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:18:24,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:18:24,614 INFO L85 PathProgramCache]: Analyzing trace with hash -748150512, now seen corresponding path program 1 times [2023-12-21 11:18:24,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:18:24,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665589538] [2023-12-21 11:18:24,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:18:24,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:18:24,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:24,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:18:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:24,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 11:18:24,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:24,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:18:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:24,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 11:18:24,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:24,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 11:18:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:24,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:18:24,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:18:24,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665589538] [2023-12-21 11:18:24,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665589538] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:18:24,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:18:24,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:18:24,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327498608] [2023-12-21 11:18:24,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:18:24,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:18:24,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:18:24,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:18:24,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:18:24,762 INFO L87 Difference]: Start difference. First operand 16935 states and 27397 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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) [2023-12-21 11:18:28,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:18:28,532 INFO L93 Difference]: Finished difference Result 66999 states and 109792 transitions. [2023-12-21 11:18:28,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 11:18:28,533 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 130 [2023-12-21 11:18:28,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:18:28,688 INFO L225 Difference]: With dead ends: 66999 [2023-12-21 11:18:28,689 INFO L226 Difference]: Without dead ends: 50079 [2023-12-21 11:18:28,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:18:28,745 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 1219 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 3248 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1234 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 3307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 3248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:18:28,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1234 Valid, 1578 Invalid, 3307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 3248 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-21 11:18:28,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50079 states. [2023-12-21 11:18:29,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50079 to 33256. [2023-12-21 11:18:29,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33256 states, 30154 states have (on average 1.5854612986668435) internal successors, (47808), 30283 states have internal predecessors, (47808), 2199 states have call successors, (2199), 774 states have call predecessors, (2199), 902 states have return successors, (4514), 2326 states have call predecessors, (4514), 2199 states have call successors, (4514) [2023-12-21 11:18:30,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33256 states to 33256 states and 54521 transitions. [2023-12-21 11:18:30,079 INFO L78 Accepts]: Start accepts. Automaton has 33256 states and 54521 transitions. Word has length 130 [2023-12-21 11:18:30,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:18:30,079 INFO L495 AbstractCegarLoop]: Abstraction has 33256 states and 54521 transitions. [2023-12-21 11:18:30,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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) [2023-12-21 11:18:30,079 INFO L276 IsEmpty]: Start isEmpty. Operand 33256 states and 54521 transitions. [2023-12-21 11:18:30,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 11:18:30,095 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:18:30,095 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:18:30,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 11:18:30,096 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:18:30,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:18:30,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1680108110, now seen corresponding path program 1 times [2023-12-21 11:18:30,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:18:30,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138369795] [2023-12-21 11:18:30,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:18:30,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:18:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:30,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:18:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:30,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 11:18:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:30,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:18:30,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:30,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 11:18:30,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:30,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 11:18:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:30,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:18:30,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:18:30,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138369795] [2023-12-21 11:18:30,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138369795] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:18:30,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:18:30,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:18:30,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881889806] [2023-12-21 11:18:30,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:18:30,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:18:30,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:18:30,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:18:30,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:18:30,375 INFO L87 Difference]: Start difference. First operand 33256 states and 54521 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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) [2023-12-21 11:18:32,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:18:32,540 INFO L93 Difference]: Finished difference Result 76630 states and 128228 transitions. [2023-12-21 11:18:32,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:18:32,540 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 130 [2023-12-21 11:18:32,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:18:32,762 INFO L225 Difference]: With dead ends: 76630 [2023-12-21 11:18:32,762 INFO L226 Difference]: Without dead ends: 43389 [2023-12-21 11:18:32,809 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 [2023-12-21 11:18:32,810 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 970 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 11:18:32,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [987 Valid, 684 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 11:18:32,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43389 states. [2023-12-21 11:18:34,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43389 to 33256. [2023-12-21 11:18:34,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33256 states, 30154 states have (on average 1.5811832592690853) internal successors, (47679), 30283 states have internal predecessors, (47679), 2199 states have call successors, (2199), 774 states have call predecessors, (2199), 902 states have return successors, (4514), 2326 states have call predecessors, (4514), 2199 states have call successors, (4514) [2023-12-21 11:18:34,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33256 states to 33256 states and 54392 transitions. [2023-12-21 11:18:34,348 INFO L78 Accepts]: Start accepts. Automaton has 33256 states and 54392 transitions. Word has length 130 [2023-12-21 11:18:34,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:18:34,350 INFO L495 AbstractCegarLoop]: Abstraction has 33256 states and 54392 transitions. [2023-12-21 11:18:34,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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) [2023-12-21 11:18:34,350 INFO L276 IsEmpty]: Start isEmpty. Operand 33256 states and 54392 transitions. [2023-12-21 11:18:34,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 11:18:34,369 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:18:34,369 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:18:34,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 11:18:34,370 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:18:34,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:18:34,370 INFO L85 PathProgramCache]: Analyzing trace with hash 372965712, now seen corresponding path program 1 times [2023-12-21 11:18:34,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:18:34,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860772131] [2023-12-21 11:18:34,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:18:34,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:18:34,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:34,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:18:34,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:34,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 11:18:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:34,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:18:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:34,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 11:18:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:34,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 11:18:34,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:34,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:18:34,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:18:34,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860772131] [2023-12-21 11:18:34,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860772131] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:18:34,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:18:34,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:18:34,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107055244] [2023-12-21 11:18:34,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:18:34,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:18:34,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:18:34,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:18:34,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:18:34,539 INFO L87 Difference]: Start difference. First operand 33256 states and 54392 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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) [2023-12-21 11:18:38,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:18:38,713 INFO L93 Difference]: Finished difference Result 127154 states and 210714 transitions. [2023-12-21 11:18:38,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 11:18:38,714 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 130 [2023-12-21 11:18:38,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:18:39,298 INFO L225 Difference]: With dead ends: 127154 [2023-12-21 11:18:39,299 INFO L226 Difference]: Without dead ends: 93913 [2023-12-21 11:18:39,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:18:39,365 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 1254 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 2642 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1269 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 2729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-21 11:18:39,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1269 Valid, 1042 Invalid, 2729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2642 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-21 11:18:39,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93913 states. [2023-12-21 11:18:42,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93913 to 66475. [2023-12-21 11:18:42,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66475 states, 60429 states have (on average 1.5813102980357114) internal successors, (95557), 60686 states have internal predecessors, (95557), 4247 states have call successors, (4247), 1542 states have call predecessors, (4247), 1798 states have return successors, (11064), 4502 states have call predecessors, (11064), 4247 states have call successors, (11064) [2023-12-21 11:18:42,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66475 states to 66475 states and 110868 transitions. [2023-12-21 11:18:42,604 INFO L78 Accepts]: Start accepts. Automaton has 66475 states and 110868 transitions. Word has length 130 [2023-12-21 11:18:42,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:18:42,604 INFO L495 AbstractCegarLoop]: Abstraction has 66475 states and 110868 transitions. [2023-12-21 11:18:42,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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) [2023-12-21 11:18:42,604 INFO L276 IsEmpty]: Start isEmpty. Operand 66475 states and 110868 transitions. [2023-12-21 11:18:42,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 11:18:42,635 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:18:42,635 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:18:42,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 11:18:42,635 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:18:42,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:18:42,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1404006610, now seen corresponding path program 1 times [2023-12-21 11:18:42,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:18:42,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147653969] [2023-12-21 11:18:42,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:18:42,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:18:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:42,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:18:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:42,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 11:18:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:42,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:18:42,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:42,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 11:18:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:42,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 11:18:42,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:42,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:18:42,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:18:42,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147653969] [2023-12-21 11:18:42,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147653969] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:18:42,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:18:42,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:18:42,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424155196] [2023-12-21 11:18:42,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:18:42,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:18:42,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:18:42,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:18:42,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:18:42,935 INFO L87 Difference]: Start difference. First operand 66475 states and 110868 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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) [2023-12-21 11:18:46,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:18:46,478 INFO L93 Difference]: Finished difference Result 151766 states and 259235 transitions. [2023-12-21 11:18:46,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:18:46,478 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 130 [2023-12-21 11:18:46,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:18:46,786 INFO L225 Difference]: With dead ends: 151766 [2023-12-21 11:18:46,787 INFO L226 Difference]: Without dead ends: 85306 [2023-12-21 11:18:46,913 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 [2023-12-21 11:18:46,921 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 848 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 11:18:46,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 814 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1333 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 11:18:46,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85306 states. [2023-12-21 11:18:49,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85306 to 66475. [2023-12-21 11:18:49,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66475 states, 60429 states have (on average 1.577057373115557) internal successors, (95300), 60686 states have internal predecessors, (95300), 4247 states have call successors, (4247), 1542 states have call predecessors, (4247), 1798 states have return successors, (11064), 4502 states have call predecessors, (11064), 4247 states have call successors, (11064) [2023-12-21 11:18:49,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66475 states to 66475 states and 110611 transitions. [2023-12-21 11:18:49,932 INFO L78 Accepts]: Start accepts. Automaton has 66475 states and 110611 transitions. Word has length 130 [2023-12-21 11:18:49,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:18:49,933 INFO L495 AbstractCegarLoop]: Abstraction has 66475 states and 110611 transitions. [2023-12-21 11:18:49,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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) [2023-12-21 11:18:49,933 INFO L276 IsEmpty]: Start isEmpty. Operand 66475 states and 110611 transitions. [2023-12-21 11:18:49,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 11:18:49,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:18:49,989 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:18:49,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 11:18:49,989 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:18:49,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:18:49,989 INFO L85 PathProgramCache]: Analyzing trace with hash -502396656, now seen corresponding path program 1 times [2023-12-21 11:18:49,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:18:49,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358900955] [2023-12-21 11:18:49,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:18:49,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:18:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:50,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:18:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:50,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 11:18:50,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:50,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:18:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:50,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 11:18:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:50,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 11:18:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:50,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:18:50,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:18:50,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358900955] [2023-12-21 11:18:50,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358900955] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:18:50,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:18:50,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:18:50,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928714921] [2023-12-21 11:18:50,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:18:50,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:18:50,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:18:50,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:18:50,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:18:50,343 INFO L87 Difference]: Start difference. First operand 66475 states and 110611 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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) [2023-12-21 11:18:56,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:18:56,867 INFO L93 Difference]: Finished difference Result 246641 states and 416236 transitions. [2023-12-21 11:18:56,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 11:18:56,868 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 130 [2023-12-21 11:18:56,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:18:57,641 INFO L225 Difference]: With dead ends: 246641 [2023-12-21 11:18:57,642 INFO L226 Difference]: Without dead ends: 180181 [2023-12-21 11:18:57,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:18:57,781 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 1161 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 2924 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 1582 SdHoareTripleChecker+Invalid, 2983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:18:57,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1176 Valid, 1582 Invalid, 2983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2924 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-21 11:18:57,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180181 states. [2023-12-21 11:19:03,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180181 to 133165. [2023-12-21 11:19:03,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133165 states, 121359 states have (on average 1.5763478604800634) internal successors, (191304), 121872 states have internal predecessors, (191304), 8215 states have call successors, (8215), 3078 states have call predecessors, (8215), 3590 states have return successors, (28410), 8726 states have call predecessors, (28410), 8215 states have call successors, (28410) [2023-12-21 11:19:04,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133165 states to 133165 states and 227929 transitions. [2023-12-21 11:19:04,121 INFO L78 Accepts]: Start accepts. Automaton has 133165 states and 227929 transitions. Word has length 130 [2023-12-21 11:19:04,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:19:04,121 INFO L495 AbstractCegarLoop]: Abstraction has 133165 states and 227929 transitions. [2023-12-21 11:19:04,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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) [2023-12-21 11:19:04,121 INFO L276 IsEmpty]: Start isEmpty. Operand 133165 states and 227929 transitions. [2023-12-21 11:19:04,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 11:19:04,182 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:19:04,183 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:19:04,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 11:19:04,183 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:19:04,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:19:04,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1098674450, now seen corresponding path program 1 times [2023-12-21 11:19:04,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:19:04,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415111209] [2023-12-21 11:19:04,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:19:04,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:19:04,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:04,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:19:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:04,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 11:19:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:04,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:19:04,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:04,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 11:19:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:04,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 11:19:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:04,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:19:04,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:19:04,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415111209] [2023-12-21 11:19:04,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415111209] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:19:04,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:19:04,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:19:04,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460284239] [2023-12-21 11:19:04,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:19:04,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:19:04,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:19:04,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:19:04,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:19:04,578 INFO L87 Difference]: Start difference. First operand 133165 states and 227929 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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) [2023-12-21 11:19:14,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:19:14,911 INFO L93 Difference]: Finished difference Result 485361 states and 844788 transitions. [2023-12-21 11:19:14,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 11:19:14,912 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 130 [2023-12-21 11:19:14,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:19:16,247 INFO L225 Difference]: With dead ends: 485361 [2023-12-21 11:19:16,248 INFO L226 Difference]: Without dead ends: 352211 [2023-12-21 11:19:16,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:19:16,710 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 1215 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 2632 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 1582 SdHoareTripleChecker+Invalid, 2692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:19:16,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1241 Valid, 1582 Invalid, 2692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 2632 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-21 11:19:16,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352211 states. [2023-12-21 11:19:27,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352211 to 266542. [2023-12-21 11:19:27,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266542 states, 243472 states have (on average 1.5764358940658474) internal successors, (383818), 244497 states have internal predecessors, (383818), 15895 states have call successors, (15895), 6150 states have call predecessors, (15895), 7174 states have return successors, (75968), 16918 states have call predecessors, (75968), 15895 states have call successors, (75968) [2023-12-21 11:19:29,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266542 states to 266542 states and 475681 transitions. [2023-12-21 11:19:29,464 INFO L78 Accepts]: Start accepts. Automaton has 266542 states and 475681 transitions. Word has length 130 [2023-12-21 11:19:29,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:19:29,464 INFO L495 AbstractCegarLoop]: Abstraction has 266542 states and 475681 transitions. [2023-12-21 11:19:29,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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) [2023-12-21 11:19:29,464 INFO L276 IsEmpty]: Start isEmpty. Operand 266542 states and 475681 transitions. [2023-12-21 11:19:29,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 11:19:29,615 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:19:29,615 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:19:29,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 11:19:29,616 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:19:29,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:19:29,616 INFO L85 PathProgramCache]: Analyzing trace with hash 41943248, now seen corresponding path program 1 times [2023-12-21 11:19:29,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:19:29,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101245352] [2023-12-21 11:19:29,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:19:29,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:19:29,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:29,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:19:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:29,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 11:19:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:29,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:19:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:29,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 11:19:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:29,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 11:19:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:19:29,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:19:29,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:19:29,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101245352] [2023-12-21 11:19:29,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101245352] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:19:29,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:19:29,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:19:29,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544208957] [2023-12-21 11:19:29,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:19:29,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:19:29,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:19:29,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:19:29,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:19:29,788 INFO L87 Difference]: Start difference. First operand 266542 states and 475681 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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)