/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.08.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 11:17:24,431 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 11:17:24,495 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 11:17:24,499 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 11:17:24,499 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 11:17:24,520 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 11:17:24,520 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 11:17:24,520 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 11:17:24,521 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 11:17:24,523 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 11:17:24,524 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 11:17:24,524 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 11:17:24,524 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 11:17:24,525 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 11:17:24,525 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 11:17:24,525 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 11:17:24,525 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 11:17:24,526 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 11:17:24,526 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 11:17:24,527 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 11:17:24,527 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 11:17:24,527 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 11:17:24,527 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 11:17:24,527 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 11:17:24,527 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 11:17:24,528 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 11:17:24,528 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 11:17:24,528 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 11:17:24,528 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 11:17:24,528 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 11:17:24,529 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 11:17:24,529 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 11:17:24,529 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:17:24,529 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 11:17:24,529 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 11:17:24,530 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 11:17:24,530 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 11:17:24,530 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 11:17:24,530 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 11:17:24,530 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 11:17:24,531 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 11:17:24,531 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 11:17:24,531 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 11:17:24,531 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 11:17:24,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 11:17:24,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 11:17:24,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 11:17:24,716 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 11:17:24,720 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 11:17:24,720 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.08.cil-1.c [2023-12-21 11:17:25,660 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 11:17:25,845 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 11:17:25,846 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.08.cil-1.c [2023-12-21 11:17:25,855 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/901cedffa/520bd59cd77e4d50bf0c3ba4eda3760b/FLAGdf3944aed [2023-12-21 11:17:25,867 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/901cedffa/520bd59cd77e4d50bf0c3ba4eda3760b [2023-12-21 11:17:25,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 11:17:25,870 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 11:17:25,872 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 11:17:25,872 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 11:17:25,875 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 11:17:25,876 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:17:25" (1/1) ... [2023-12-21 11:17:25,876 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@256985de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:25, skipping insertion in model container [2023-12-21 11:17:25,877 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:17:25" (1/1) ... [2023-12-21 11:17:25,915 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 11:17:26,020 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.08.cil-1.c[671,684] [2023-12-21 11:17:26,096 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:17:26,106 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 11:17:26,115 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.08.cil-1.c[671,684] [2023-12-21 11:17:26,164 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:17:26,177 INFO L206 MainTranslator]: Completed translation [2023-12-21 11:17:26,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:26 WrapperNode [2023-12-21 11:17:26,177 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 11:17:26,178 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 11:17:26,178 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 11:17:26,178 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 11:17:26,182 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:26" (1/1) ... [2023-12-21 11:17:26,192 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:26" (1/1) ... [2023-12-21 11:17:26,220 INFO L138 Inliner]: procedures = 44, calls = 55, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 639 [2023-12-21 11:17:26,221 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 11:17:26,221 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 11:17:26,221 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 11:17:26,221 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 11:17:26,229 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:26" (1/1) ... [2023-12-21 11:17:26,229 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:26" (1/1) ... [2023-12-21 11:17:26,231 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:26" (1/1) ... [2023-12-21 11:17:26,242 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 11:17:26,242 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:26" (1/1) ... [2023-12-21 11:17:26,242 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:26" (1/1) ... [2023-12-21 11:17:26,248 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:26" (1/1) ... [2023-12-21 11:17:26,254 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:26" (1/1) ... [2023-12-21 11:17:26,255 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:26" (1/1) ... [2023-12-21 11:17:26,257 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:26" (1/1) ... [2023-12-21 11:17:26,260 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 11:17:26,260 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 11:17:26,260 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 11:17:26,261 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 11:17:26,261 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:26" (1/1) ... [2023-12-21 11:17:26,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:17:26,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:17:26,287 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 11:17:26,301 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 11:17:26,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 11:17:26,307 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-21 11:17:26,307 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-21 11:17:26,307 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-21 11:17:26,308 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-21 11:17:26,308 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-21 11:17:26,308 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-21 11:17:26,308 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-21 11:17:26,308 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-21 11:17:26,308 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-21 11:17:26,308 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-21 11:17:26,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 11:17:26,308 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-21 11:17:26,308 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-21 11:17:26,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 11:17:26,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 11:17:26,380 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 11:17:26,382 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 11:17:26,810 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 11:17:26,850 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 11:17:26,850 INFO L309 CfgBuilder]: Removed 11 assume(true) statements. [2023-12-21 11:17:26,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:17:26 BoogieIcfgContainer [2023-12-21 11:17:26,850 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 11:17:26,852 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 11:17:26,852 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 11:17:26,854 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 11:17:26,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:17:25" (1/3) ... [2023-12-21 11:17:26,856 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34acccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:17:26, skipping insertion in model container [2023-12-21 11:17:26,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:26" (2/3) ... [2023-12-21 11:17:26,857 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34acccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:17:26, skipping insertion in model container [2023-12-21 11:17:26,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:17:26" (3/3) ... [2023-12-21 11:17:26,858 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.08.cil-1.c [2023-12-21 11:17:26,869 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 11:17:26,869 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 11:17:26,899 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 11:17:26,904 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;@565454b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 11:17:26,904 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 11:17:26,907 INFO L276 IsEmpty]: Start isEmpty. Operand has 256 states, 226 states have (on average 1.7212389380530972) internal successors, (389), 228 states have internal predecessors, (389), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-21 11:17:26,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 11:17:26,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:17:26,917 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] [2023-12-21 11:17:26,918 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:17:26,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:17:26,921 INFO L85 PathProgramCache]: Analyzing trace with hash -602286887, now seen corresponding path program 1 times [2023-12-21 11:17:26,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:17:26,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260288091] [2023-12-21 11:17:26,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:17:26,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:17:27,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:27,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:17:27,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:27,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:17:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:27,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 11:17:27,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:27,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 11:17:27,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:27,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:17:27,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:27,356 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 11:17:27,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:17:27,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260288091] [2023-12-21 11:17:27,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260288091] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:17:27,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:17:27,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:17:27,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085939669] [2023-12-21 11:17:27,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:17:27,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:17:27,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:17:27,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:17:27,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:17:27,390 INFO L87 Difference]: Start difference. First operand has 256 states, 226 states have (on average 1.7212389380530972) internal successors, (389), 228 states have internal predecessors, (389), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 3 states have internal predecessors, (110), 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 11:17:28,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:17:28,380 INFO L93 Difference]: Finished difference Result 594 states and 1013 transitions. [2023-12-21 11:17:28,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 11:17:28,382 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 3 states have internal predecessors, (110), 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 120 [2023-12-21 11:17:28,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:17:28,390 INFO L225 Difference]: With dead ends: 594 [2023-12-21 11:17:28,390 INFO L226 Difference]: Without dead ends: 344 [2023-12-21 11:17:28,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 11:17:28,396 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 691 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 11:17:28,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 461 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 11:17:28,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2023-12-21 11:17:28,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 254. [2023-12-21 11:17:28,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 225 states have (on average 1.6133333333333333) internal successors, (363), 226 states have internal predecessors, (363), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-21 11:17:28,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 407 transitions. [2023-12-21 11:17:28,437 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 407 transitions. Word has length 120 [2023-12-21 11:17:28,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:17:28,437 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 407 transitions. [2023-12-21 11:17:28,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 3 states have internal predecessors, (110), 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 11:17:28,438 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 407 transitions. [2023-12-21 11:17:28,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 11:17:28,440 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:17:28,440 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] [2023-12-21 11:17:28,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 11:17:28,440 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:17:28,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:17:28,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1045076055, now seen corresponding path program 1 times [2023-12-21 11:17:28,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:17:28,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490742891] [2023-12-21 11:17:28,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:17:28,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:17:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:28,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:17:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:28,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:17:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:28,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 11:17:28,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:28,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 11:17:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:28,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:17:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:28,622 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 11:17:28,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:17:28,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490742891] [2023-12-21 11:17:28,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490742891] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:17:28,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:17:28,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:17:28,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268727737] [2023-12-21 11:17:28,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:17:28,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:17:28,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:17:28,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:17:28,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:17:28,625 INFO L87 Difference]: Start difference. First operand 254 states and 407 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 4 states have internal predecessors, (110), 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 11:17:30,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:17:30,103 INFO L93 Difference]: Finished difference Result 925 states and 1517 transitions. [2023-12-21 11:17:30,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:17:30,104 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 4 states have internal predecessors, (110), 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 120 [2023-12-21 11:17:30,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:17:30,107 INFO L225 Difference]: With dead ends: 925 [2023-12-21 11:17:30,108 INFO L226 Difference]: Without dead ends: 685 [2023-12-21 11:17:30,109 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 11:17:30,109 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 1041 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 1652 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 1744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:17:30,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1056 Valid, 877 Invalid, 1744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1652 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 11:17:30,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2023-12-21 11:17:30,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 506. [2023-12-21 11:17:30,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 453 states have (on average 1.6225165562913908) internal successors, (735), 455 states have internal predecessors, (735), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2023-12-21 11:17:30,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 816 transitions. [2023-12-21 11:17:30,136 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 816 transitions. Word has length 120 [2023-12-21 11:17:30,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:17:30,136 INFO L495 AbstractCegarLoop]: Abstraction has 506 states and 816 transitions. [2023-12-21 11:17:30,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 4 states have internal predecessors, (110), 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 11:17:30,136 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 816 transitions. [2023-12-21 11:17:30,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 11:17:30,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:17:30,138 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:30,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 11:17:30,138 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:17:30,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:17:30,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1590364567, now seen corresponding path program 1 times [2023-12-21 11:17:30,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:17:30,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842972898] [2023-12-21 11:17:30,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:17:30,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:17:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:30,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:17:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:30,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:17:30,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:30,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 11:17:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:30,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 11:17:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:30,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:17:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:30,316 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 11:17:30,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:17:30,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842972898] [2023-12-21 11:17:30,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842972898] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:17:30,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:17:30,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:17:30,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986452992] [2023-12-21 11:17:30,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:17:30,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:17:30,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:17:30,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:17:30,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:17:30,323 INFO L87 Difference]: Start difference. First operand 506 states and 816 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 11:17:32,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:17:32,334 INFO L93 Difference]: Finished difference Result 1530 states and 2507 transitions. [2023-12-21 11:17:32,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 11:17:32,334 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 120 [2023-12-21 11:17:32,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:17:32,339 INFO L225 Difference]: With dead ends: 1530 [2023-12-21 11:17:32,339 INFO L226 Difference]: Without dead ends: 1038 [2023-12-21 11:17:32,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-21 11:17:32,341 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 1062 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 2633 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 2686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-21 11:17:32,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1077 Valid, 1456 Invalid, 2686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 2633 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-21 11:17:32,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2023-12-21 11:17:32,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 739. [2023-12-21 11:17:32,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 662 states have (on average 1.6148036253776434) internal successors, (1069), 665 states have internal predecessors, (1069), 56 states have call successors, (56), 18 states have call predecessors, (56), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2023-12-21 11:17:32,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1186 transitions. [2023-12-21 11:17:32,366 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1186 transitions. Word has length 120 [2023-12-21 11:17:32,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:17:32,366 INFO L495 AbstractCegarLoop]: Abstraction has 739 states and 1186 transitions. [2023-12-21 11:17:32,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 11:17:32,366 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1186 transitions. [2023-12-21 11:17:32,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 11:17:32,367 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:17:32,368 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] [2023-12-21 11:17:32,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 11:17:32,368 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:17:32,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:17:32,368 INFO L85 PathProgramCache]: Analyzing trace with hash -443029479, now seen corresponding path program 1 times [2023-12-21 11:17:32,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:17:32,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468649709] [2023-12-21 11:17:32,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:17:32,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:17:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:32,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:17:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:32,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:17:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:32,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 11:17:32,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:32,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 11:17:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:32,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:17:32,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:32,529 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 11:17:32,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:17:32,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468649709] [2023-12-21 11:17:32,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468649709] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:17:32,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:17:32,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:17:32,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496351389] [2023-12-21 11:17:32,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:17:32,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:17:32,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:17:32,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:17:32,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:17:32,531 INFO L87 Difference]: Start difference. First operand 739 states and 1186 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 11:17:34,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:17:34,429 INFO L93 Difference]: Finished difference Result 2416 states and 3949 transitions. [2023-12-21 11:17:34,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 11:17:34,430 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 120 [2023-12-21 11:17:34,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:17:34,436 INFO L225 Difference]: With dead ends: 2416 [2023-12-21 11:17:34,436 INFO L226 Difference]: Without dead ends: 1691 [2023-12-21 11:17:34,438 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 11:17:34,439 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 1140 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 2183 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 2266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 11:17:34,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1155 Valid, 956 Invalid, 2266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2183 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 11:17:34,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2023-12-21 11:17:34,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 1206. [2023-12-21 11:17:34,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 1081 states have (on average 1.6077705827937094) internal successors, (1738), 1086 states have internal predecessors, (1738), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2023-12-21 11:17:34,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 1931 transitions. [2023-12-21 11:17:34,476 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 1931 transitions. Word has length 120 [2023-12-21 11:17:34,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:17:34,477 INFO L495 AbstractCegarLoop]: Abstraction has 1206 states and 1931 transitions. [2023-12-21 11:17:34,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 11:17:34,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 1931 transitions. [2023-12-21 11:17:34,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 11:17:34,478 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:17:34,478 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] [2023-12-21 11:17:34,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 11:17:34,478 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:17:34,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:17:34,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1985229143, now seen corresponding path program 1 times [2023-12-21 11:17:34,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:17:34,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109042857] [2023-12-21 11:17:34,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:17:34,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:17:34,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:34,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:17:34,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:34,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:17:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:34,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 11:17:34,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:34,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 11:17:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:34,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:17:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:34,648 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 11:17:34,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:17:34,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109042857] [2023-12-21 11:17:34,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109042857] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:17:34,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:17:34,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:17:34,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694036237] [2023-12-21 11:17:34,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:17:34,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:17:34,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:17:34,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:17:34,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:17:34,658 INFO L87 Difference]: Start difference. First operand 1206 states and 1931 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 11:17:35,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:17:35,520 INFO L93 Difference]: Finished difference Result 2873 states and 4687 transitions. [2023-12-21 11:17:35,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:17:35,520 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 120 [2023-12-21 11:17:35,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:17:35,525 INFO L225 Difference]: With dead ends: 2873 [2023-12-21 11:17:35,526 INFO L226 Difference]: Without dead ends: 1681 [2023-12-21 11:17:35,528 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 11:17:35,529 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 874 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 1286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 11:17:35,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 625 Invalid, 1286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 11:17:35,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1681 states. [2023-12-21 11:17:35,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1681 to 1206. [2023-12-21 11:17:35,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 1081 states have (on average 1.6031452358926919) internal successors, (1733), 1086 states have internal predecessors, (1733), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2023-12-21 11:17:35,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 1926 transitions. [2023-12-21 11:17:35,578 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 1926 transitions. Word has length 120 [2023-12-21 11:17:35,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:17:35,578 INFO L495 AbstractCegarLoop]: Abstraction has 1206 states and 1926 transitions. [2023-12-21 11:17:35,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 11:17:35,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 1926 transitions. [2023-12-21 11:17:35,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 11:17:35,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:17:35,579 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] [2023-12-21 11:17:35,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 11:17:35,580 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:17:35,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:17:35,580 INFO L85 PathProgramCache]: Analyzing trace with hash 678086745, now seen corresponding path program 1 times [2023-12-21 11:17:35,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:17:35,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142021488] [2023-12-21 11:17:35,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:17:35,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:17:35,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:35,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:17:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:35,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:17:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:35,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 11:17:35,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:35,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 11:17:35,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:35,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:17:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:35,729 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 11:17:35,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:17:35,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142021488] [2023-12-21 11:17:35,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142021488] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:17:35,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:17:35,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:17:35,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575321511] [2023-12-21 11:17:35,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:17:35,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:17:35,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:17:35,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:17:35,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:17:35,731 INFO L87 Difference]: Start difference. First operand 1206 states and 1926 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 11:17:36,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:17:36,708 INFO L93 Difference]: Finished difference Result 2867 states and 4661 transitions. [2023-12-21 11:17:36,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:17:36,709 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 120 [2023-12-21 11:17:36,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:17:36,714 INFO L225 Difference]: With dead ends: 2867 [2023-12-21 11:17:36,714 INFO L226 Difference]: Without dead ends: 1675 [2023-12-21 11:17:36,717 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 11:17:36,718 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 764 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 1382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 11:17:36,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 744 Invalid, 1382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1325 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 11:17:36,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1675 states. [2023-12-21 11:17:36,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1675 to 1206. [2023-12-21 11:17:36,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 1081 states have (on average 1.5985198889916743) internal successors, (1728), 1086 states have internal predecessors, (1728), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2023-12-21 11:17:36,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 1921 transitions. [2023-12-21 11:17:36,797 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 1921 transitions. Word has length 120 [2023-12-21 11:17:36,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:17:36,797 INFO L495 AbstractCegarLoop]: Abstraction has 1206 states and 1921 transitions. [2023-12-21 11:17:36,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 11:17:36,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 1921 transitions. [2023-12-21 11:17:36,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 11:17:36,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:17:36,799 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] [2023-12-21 11:17:36,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 11:17:36,799 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:17:36,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:17:36,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1719383785, now seen corresponding path program 1 times [2023-12-21 11:17:36,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:17:36,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144129569] [2023-12-21 11:17:36,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:17:36,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:17:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:36,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:17:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:36,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:17:36,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:36,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 11:17:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:36,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 11:17:36,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:36,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:17:36,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:36,941 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 11:17:36,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:17:36,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144129569] [2023-12-21 11:17:36,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144129569] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:17:36,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:17:36,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:17:36,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604354221] [2023-12-21 11:17:36,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:17:36,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:17:36,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:17:36,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:17:36,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:17:36,942 INFO L87 Difference]: Start difference. First operand 1206 states and 1921 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 11:17:37,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:17:37,908 INFO L93 Difference]: Finished difference Result 2860 states and 4633 transitions. [2023-12-21 11:17:37,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:17:37,909 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 120 [2023-12-21 11:17:37,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:17:37,914 INFO L225 Difference]: With dead ends: 2860 [2023-12-21 11:17:37,915 INFO L226 Difference]: Without dead ends: 1668 [2023-12-21 11:17:37,917 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 11:17:37,917 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 762 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 1366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 11:17:37,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 744 Invalid, 1366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 11:17:37,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2023-12-21 11:17:37,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1206. [2023-12-21 11:17:37,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 1081 states have (on average 1.5938945420906567) internal successors, (1723), 1086 states have internal predecessors, (1723), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2023-12-21 11:17:37,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 1916 transitions. [2023-12-21 11:17:37,970 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 1916 transitions. Word has length 120 [2023-12-21 11:17:37,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:17:37,971 INFO L495 AbstractCegarLoop]: Abstraction has 1206 states and 1916 transitions. [2023-12-21 11:17:37,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 11:17:37,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 1916 transitions. [2023-12-21 11:17:37,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 11:17:37,972 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:17:37,972 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] [2023-12-21 11:17:37,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 11:17:37,972 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:17:37,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:17:37,973 INFO L85 PathProgramCache]: Analyzing trace with hash -688342887, now seen corresponding path program 1 times [2023-12-21 11:17:37,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:17:37,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550489078] [2023-12-21 11:17:37,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:17:37,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:17:37,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:38,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:17:38,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:38,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:17:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:38,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 11:17:38,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:38,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 11:17:38,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:38,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:17:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:38,105 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 11:17:38,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:17:38,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550489078] [2023-12-21 11:17:38,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550489078] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:17:38,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:17:38,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:17:38,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190935137] [2023-12-21 11:17:38,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:17:38,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:17:38,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:17:38,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:17:38,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:17:38,107 INFO L87 Difference]: Start difference. First operand 1206 states and 1916 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 11:17:39,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:17:39,996 INFO L93 Difference]: Finished difference Result 4092 states and 6590 transitions. [2023-12-21 11:17:39,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 11:17:39,996 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 120 [2023-12-21 11:17:39,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:17:40,006 INFO L225 Difference]: With dead ends: 4092 [2023-12-21 11:17:40,006 INFO L226 Difference]: Without dead ends: 2900 [2023-12-21 11:17:40,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-21 11:17:40,009 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 1036 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 2550 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 2605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 11:17:40,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1051 Valid, 1454 Invalid, 2605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2550 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 11:17:40,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2023-12-21 11:17:40,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 2153. [2023-12-21 11:17:40,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2153 states, 1932 states have (on average 1.5859213250517599) internal successors, (3064), 1941 states have internal predecessors, (3064), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2023-12-21 11:17:40,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 3415 transitions. [2023-12-21 11:17:40,127 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 3415 transitions. Word has length 120 [2023-12-21 11:17:40,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:17:40,127 INFO L495 AbstractCegarLoop]: Abstraction has 2153 states and 3415 transitions. [2023-12-21 11:17:40,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 11:17:40,128 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 3415 transitions. [2023-12-21 11:17:40,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 11:17:40,129 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:17:40,129 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] [2023-12-21 11:17:40,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 11:17:40,129 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:17:40,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:17:40,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1700221143, now seen corresponding path program 1 times [2023-12-21 11:17:40,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:17:40,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849289033] [2023-12-21 11:17:40,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:17:40,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:17:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:40,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:17:40,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:40,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:17:40,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:40,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 11:17:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:40,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 11:17:40,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:40,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:17:40,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:40,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:17:40,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:17:40,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849289033] [2023-12-21 11:17:40,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849289033] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:17:40,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:17:40,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:17:40,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635543269] [2023-12-21 11:17:40,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:17:40,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:17:40,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:17:40,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:17:40,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:17:40,276 INFO L87 Difference]: Start difference. First operand 2153 states and 3415 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 11:17:42,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:17:42,247 INFO L93 Difference]: Finished difference Result 7477 states and 12027 transitions. [2023-12-21 11:17:42,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 11:17:42,249 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 120 [2023-12-21 11:17:42,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:17:42,265 INFO L225 Difference]: With dead ends: 7477 [2023-12-21 11:17:42,266 INFO L226 Difference]: Without dead ends: 5338 [2023-12-21 11:17:42,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-21 11:17:42,271 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 1032 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 2522 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 2577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 11:17:42,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1047 Valid, 1454 Invalid, 2577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2522 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 11:17:42,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5338 states. [2023-12-21 11:17:42,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5338 to 4056. [2023-12-21 11:17:42,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4056 states, 3643 states have (on average 1.5811144660993686) internal successors, (5760), 3660 states have internal predecessors, (5760), 294 states have call successors, (294), 102 states have call predecessors, (294), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2023-12-21 11:17:42,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4056 states to 4056 states and 6445 transitions. [2023-12-21 11:17:42,429 INFO L78 Accepts]: Start accepts. Automaton has 4056 states and 6445 transitions. Word has length 120 [2023-12-21 11:17:42,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:17:42,429 INFO L495 AbstractCegarLoop]: Abstraction has 4056 states and 6445 transitions. [2023-12-21 11:17:42,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 11:17:42,429 INFO L276 IsEmpty]: Start isEmpty. Operand 4056 states and 6445 transitions. [2023-12-21 11:17:42,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 11:17:42,431 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:17:42,431 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] [2023-12-21 11:17:42,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 11:17:42,432 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:17:42,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:17:42,432 INFO L85 PathProgramCache]: Analyzing trace with hash 643489941, now seen corresponding path program 1 times [2023-12-21 11:17:42,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:17:42,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117262779] [2023-12-21 11:17:42,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:17:42,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:17:42,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:42,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:17:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:42,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:17:42,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:42,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 11:17:42,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:42,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 11:17:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:42,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:17:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:42,550 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 11:17:42,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:17:42,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117262779] [2023-12-21 11:17:42,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117262779] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:17:42,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:17:42,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:17:42,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095205436] [2023-12-21 11:17:42,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:17:42,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:17:42,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:17:42,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:17:42,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:17:42,552 INFO L87 Difference]: Start difference. First operand 4056 states and 6445 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 11:17:44,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:17:44,725 INFO L93 Difference]: Finished difference Result 15924 states and 25657 transitions. [2023-12-21 11:17:44,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 11:17:44,725 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 120 [2023-12-21 11:17:44,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:17:44,766 INFO L225 Difference]: With dead ends: 15924 [2023-12-21 11:17:44,766 INFO L226 Difference]: Without dead ends: 11882 [2023-12-21 11:17:44,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:17:44,774 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 1325 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 2499 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 2557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 11:17:44,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1349 Valid, 1447 Invalid, 2557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 2499 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 11:17:44,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11882 states. [2023-12-21 11:17:45,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11882 to 7843. [2023-12-21 11:17:45,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7843 states, 7062 states have (on average 1.5794392523364487) internal successors, (11154), 7095 states have internal predecessors, (11154), 550 states have call successors, (550), 198 states have call predecessors, (550), 230 states have return successors, (825), 581 states have call predecessors, (825), 550 states have call successors, (825) [2023-12-21 11:17:45,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7843 states to 7843 states and 12529 transitions. [2023-12-21 11:17:45,133 INFO L78 Accepts]: Start accepts. Automaton has 7843 states and 12529 transitions. Word has length 120 [2023-12-21 11:17:45,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:17:45,133 INFO L495 AbstractCegarLoop]: Abstraction has 7843 states and 12529 transitions. [2023-12-21 11:17:45,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 11:17:45,134 INFO L276 IsEmpty]: Start isEmpty. Operand 7843 states and 12529 transitions. [2023-12-21 11:17:45,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 11:17:45,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:17:45,138 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:45,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 11:17:45,138 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:17:45,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:17:45,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1994875159, now seen corresponding path program 1 times [2023-12-21 11:17:45,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:17:45,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989315340] [2023-12-21 11:17:45,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:17:45,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:17:45,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:45,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:17:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:45,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:17:45,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:45,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 11:17:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:45,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 11:17:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:45,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:17:45,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:45,287 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 11:17:45,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:17:45,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989315340] [2023-12-21 11:17:45,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989315340] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:17:45,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:17:45,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:17:45,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346845621] [2023-12-21 11:17:45,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:17:45,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:17:45,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:17:45,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:17:45,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:17:45,289 INFO L87 Difference]: Start difference. First operand 7843 states and 12529 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 11:17:47,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:17:47,670 INFO L93 Difference]: Finished difference Result 30705 states and 49711 transitions. [2023-12-21 11:17:47,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 11:17:47,671 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 120 [2023-12-21 11:17:47,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:17:47,727 INFO L225 Difference]: With dead ends: 30705 [2023-12-21 11:17:47,727 INFO L226 Difference]: Without dead ends: 22876 [2023-12-21 11:17:47,746 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 11:17:47,747 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 1163 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 2631 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 2710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-21 11:17:47,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1177 Valid, 1004 Invalid, 2710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2631 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-21 11:17:47,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22876 states. [2023-12-21 11:17:48,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22876 to 15256. [2023-12-21 11:17:48,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15256 states, 13755 states have (on average 1.5787713558705925) internal successors, (21716), 13820 states have internal predecessors, (21716), 1046 states have call successors, (1046), 390 states have call predecessors, (1046), 454 states have return successors, (1839), 1109 states have call predecessors, (1839), 1046 states have call successors, (1839) [2023-12-21 11:17:48,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15256 states to 15256 states and 24601 transitions. [2023-12-21 11:17:48,488 INFO L78 Accepts]: Start accepts. Automaton has 15256 states and 24601 transitions. Word has length 120 [2023-12-21 11:17:48,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:17:48,488 INFO L495 AbstractCegarLoop]: Abstraction has 15256 states and 24601 transitions. [2023-12-21 11:17:48,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 11:17:48,489 INFO L276 IsEmpty]: Start isEmpty. Operand 15256 states and 24601 transitions. [2023-12-21 11:17:48,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 11:17:48,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:17:48,497 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] [2023-12-21 11:17:48,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 11:17:48,497 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:17:48,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:17:48,498 INFO L85 PathProgramCache]: Analyzing trace with hash 375900245, now seen corresponding path program 1 times [2023-12-21 11:17:48,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:17:48,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395344699] [2023-12-21 11:17:48,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:17:48,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:17:48,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:48,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:17:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:48,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:17:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:48,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 11:17:48,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:48,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 11:17:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:48,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:17:48,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:48,612 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 11:17:48,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:17:48,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395344699] [2023-12-21 11:17:48,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395344699] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:17:48,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:17:48,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:17:48,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980624775] [2023-12-21 11:17:48,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:17:48,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:17:48,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:17:48,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:17:48,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:17:48,614 INFO L87 Difference]: Start difference. First operand 15256 states and 24601 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 11:17:49,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:17:49,881 INFO L93 Difference]: Finished difference Result 35111 states and 57627 transitions. [2023-12-21 11:17:49,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:17:49,881 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 120 [2023-12-21 11:17:49,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:17:49,939 INFO L225 Difference]: With dead ends: 35111 [2023-12-21 11:17:49,940 INFO L226 Difference]: Without dead ends: 19869 [2023-12-21 11:17:49,975 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 11:17:49,976 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 766 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 1241 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 11:17:49,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 743 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1241 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 11:17:49,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19869 states. [2023-12-21 11:17:50,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19869 to 15256. [2023-12-21 11:17:50,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15256 states, 13755 states have (on average 1.5740458015267176) internal successors, (21651), 13820 states have internal predecessors, (21651), 1046 states have call successors, (1046), 390 states have call predecessors, (1046), 454 states have return successors, (1839), 1109 states have call predecessors, (1839), 1046 states have call successors, (1839) [2023-12-21 11:17:50,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15256 states to 15256 states and 24536 transitions. [2023-12-21 11:17:50,589 INFO L78 Accepts]: Start accepts. Automaton has 15256 states and 24536 transitions. Word has length 120 [2023-12-21 11:17:50,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:17:50,589 INFO L495 AbstractCegarLoop]: Abstraction has 15256 states and 24536 transitions. [2023-12-21 11:17:50,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 11:17:50,589 INFO L276 IsEmpty]: Start isEmpty. Operand 15256 states and 24536 transitions. [2023-12-21 11:17:50,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 11:17:50,598 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:17:50,599 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] [2023-12-21 11:17:50,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 11:17:50,599 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:17:50,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:17:50,599 INFO L85 PathProgramCache]: Analyzing trace with hash -507608745, now seen corresponding path program 1 times [2023-12-21 11:17:50,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:17:50,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016469119] [2023-12-21 11:17:50,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:17:50,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:17:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:50,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:17:50,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:50,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:17:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:50,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 11:17:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:50,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 11:17:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:50,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:17:50,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:50,768 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 11:17:50,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:17:50,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016469119] [2023-12-21 11:17:50,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016469119] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:17:50,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:17:50,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:17:50,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466407958] [2023-12-21 11:17:50,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:17:50,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:17:50,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:17:50,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:17:50,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:17:50,770 INFO L87 Difference]: Start difference. First operand 15256 states and 24536 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 11:17:53,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:17:53,618 INFO L93 Difference]: Finished difference Result 58506 states and 95261 transitions. [2023-12-21 11:17:53,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 11:17:53,618 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 120 [2023-12-21 11:17:53,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:17:53,730 INFO L225 Difference]: With dead ends: 58506 [2023-12-21 11:17:53,731 INFO L226 Difference]: Without dead ends: 43264 [2023-12-21 11:17:53,760 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 11:17:53,760 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 1211 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 2448 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 2506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 11:17:53,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1235 Valid, 1447 Invalid, 2506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 2448 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 11:17:53,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43264 states. [2023-12-21 11:17:54,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43264 to 30306. [2023-12-21 11:17:54,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30306 states, 27397 states have (on average 1.5729824433332116) internal successors, (43095), 27526 states have internal predecessors, (43095), 2006 states have call successors, (2006), 774 states have call predecessors, (2006), 902 states have return successors, (4321), 2133 states have call predecessors, (4321), 2006 states have call successors, (4321) [2023-12-21 11:17:54,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30306 states to 30306 states and 49422 transitions. [2023-12-21 11:17:54,980 INFO L78 Accepts]: Start accepts. Automaton has 30306 states and 49422 transitions. Word has length 120 [2023-12-21 11:17:54,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:17:54,980 INFO L495 AbstractCegarLoop]: Abstraction has 30306 states and 49422 transitions. [2023-12-21 11:17:54,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 11:17:54,981 INFO L276 IsEmpty]: Start isEmpty. Operand 30306 states and 49422 transitions. [2023-12-21 11:17:54,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 11:17:54,999 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:17:54,999 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] [2023-12-21 11:17:54,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 11:17:54,999 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:17:55,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:17:55,000 INFO L85 PathProgramCache]: Analyzing trace with hash -536109035, now seen corresponding path program 1 times [2023-12-21 11:17:55,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:17:55,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151187824] [2023-12-21 11:17:55,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:17:55,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:17:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:55,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:17:55,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:55,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:17:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:55,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 11:17:55,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:55,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 11:17:55,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:55,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:17:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:55,111 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 11:17:55,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:17:55,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151187824] [2023-12-21 11:17:55,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151187824] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:17:55,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:17:55,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:17:55,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000233134] [2023-12-21 11:17:55,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:17:55,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:17:55,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:17:55,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:17:55,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:17:55,113 INFO L87 Difference]: Start difference. First operand 30306 states and 49422 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 11:17:59,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:17:59,044 INFO L93 Difference]: Finished difference Result 114466 states and 189029 transitions. [2023-12-21 11:17:59,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 11:17:59,045 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 120 [2023-12-21 11:17:59,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:17:59,251 INFO L225 Difference]: With dead ends: 114466 [2023-12-21 11:17:59,251 INFO L226 Difference]: Without dead ends: 84174 [2023-12-21 11:17:59,302 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 11:17:59,303 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 1059 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 2750 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 2807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-21 11:17:59,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 1447 Invalid, 2807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2750 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-21 11:17:59,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84174 states. [2023-12-21 11:18:01,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84174 to 60403. [2023-12-21 11:18:01,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60403 states, 54742 states have (on average 1.5729238975558073) internal successors, (86105), 54999 states have internal predecessors, (86105), 3862 states have call successors, (3862), 1542 states have call predecessors, (3862), 1798 states have return successors, (10679), 4117 states have call predecessors, (10679), 3862 states have call successors, (10679) [2023-12-21 11:18:02,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60403 states to 60403 states and 100646 transitions. [2023-12-21 11:18:02,040 INFO L78 Accepts]: Start accepts. Automaton has 60403 states and 100646 transitions. Word has length 120 [2023-12-21 11:18:02,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:18:02,041 INFO L495 AbstractCegarLoop]: Abstraction has 60403 states and 100646 transitions. [2023-12-21 11:18:02,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 11:18:02,041 INFO L276 IsEmpty]: Start isEmpty. Operand 60403 states and 100646 transitions. [2023-12-21 11:18:02,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 11:18:02,066 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:18:02,066 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] [2023-12-21 11:18:02,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 11:18:02,066 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:18:02,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:18:02,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1818276247, now seen corresponding path program 1 times [2023-12-21 11:18:02,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:18:02,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162168970] [2023-12-21 11:18:02,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:18:02,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:18:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:02,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:18:02,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:02,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:18:02,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:02,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 11:18:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:02,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 11:18:02,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:02,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:18:02,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:02,167 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 11:18:02,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:18:02,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162168970] [2023-12-21 11:18:02,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162168970] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:18:02,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:18:02,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:18:02,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948610800] [2023-12-21 11:18:02,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:18:02,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:18:02,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:18:02,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:18:02,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:18:02,168 INFO L87 Difference]: Start difference. First operand 60403 states and 100646 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 11:18:04,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:18:04,828 INFO L93 Difference]: Finished difference Result 137367 states and 234736 transitions. [2023-12-21 11:18:04,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:18:04,829 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 120 [2023-12-21 11:18:04,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:18:05,051 INFO L225 Difference]: With dead ends: 137367 [2023-12-21 11:18:05,051 INFO L226 Difference]: Without dead ends: 76978 [2023-12-21 11:18:05,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:18:05,139 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 771 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 1259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 11:18:05,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 743 Invalid, 1259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 11:18:05,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76978 states. [2023-12-21 11:18:07,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76978 to 60403. [2023-12-21 11:18:07,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60403 states, 54742 states have (on average 1.568229147638011) internal successors, (85848), 54999 states have internal predecessors, (85848), 3862 states have call successors, (3862), 1542 states have call predecessors, (3862), 1798 states have return successors, (10679), 4117 states have call predecessors, (10679), 3862 states have call successors, (10679) [2023-12-21 11:18:07,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60403 states to 60403 states and 100389 transitions. [2023-12-21 11:18:07,669 INFO L78 Accepts]: Start accepts. Automaton has 60403 states and 100389 transitions. Word has length 120 [2023-12-21 11:18:07,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:18:07,669 INFO L495 AbstractCegarLoop]: Abstraction has 60403 states and 100389 transitions. [2023-12-21 11:18:07,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 11:18:07,669 INFO L276 IsEmpty]: Start isEmpty. Operand 60403 states and 100389 transitions. [2023-12-21 11:18:07,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 11:18:07,700 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:18:07,700 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] [2023-12-21 11:18:07,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 11:18:07,700 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:18:07,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:18:07,943 INFO L85 PathProgramCache]: Analyzing trace with hash -599627819, now seen corresponding path program 1 times [2023-12-21 11:18:07,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:18:07,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802134213] [2023-12-21 11:18:07,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:18:07,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:18:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:07,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:18:07,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:08,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:18:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:08,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 11:18:08,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:08,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 11:18:08,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:08,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:18:08,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:08,065 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 11:18:08,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:18:08,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802134213] [2023-12-21 11:18:08,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802134213] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:18:08,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:18:08,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:18:08,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668738233] [2023-12-21 11:18:08,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:18:08,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:18:08,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:18:08,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:18:08,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:18:08,068 INFO L87 Difference]: Start difference. First operand 60403 states and 100389 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 11:18:13,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:18:13,147 INFO L93 Difference]: Finished difference Result 217805 states and 367535 transitions. [2023-12-21 11:18:13,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 11:18:13,147 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 120 [2023-12-21 11:18:13,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:18:13,642 INFO L225 Difference]: With dead ends: 217805 [2023-12-21 11:18:13,642 INFO L226 Difference]: Without dead ends: 157416 [2023-12-21 11:18:13,798 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 11:18:13,799 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 1064 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 2378 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1088 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 2436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 11:18:13,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1088 Valid, 1447 Invalid, 2436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 2378 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 11:18:13,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157416 states. [2023-12-21 11:18:18,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157416 to 121110. [2023-12-21 11:18:18,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121110 states, 110073 states have (on average 1.5683955193371673) internal successors, (172638), 110586 states have internal predecessors, (172638), 7446 states have call successors, (7446), 3078 states have call predecessors, (7446), 3590 states have return successors, (27641), 7957 states have call predecessors, (27641), 7446 states have call successors, (27641) [2023-12-21 11:18:19,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121110 states to 121110 states and 207725 transitions. [2023-12-21 11:18:19,239 INFO L78 Accepts]: Start accepts. Automaton has 121110 states and 207725 transitions. Word has length 120 [2023-12-21 11:18:19,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:18:19,239 INFO L495 AbstractCegarLoop]: Abstraction has 121110 states and 207725 transitions. [2023-12-21 11:18:19,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 11:18:19,239 INFO L276 IsEmpty]: Start isEmpty. Operand 121110 states and 207725 transitions. [2023-12-21 11:18:19,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 11:18:19,290 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:18:19,290 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] [2023-12-21 11:18:19,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 11:18:19,290 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:18:19,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:18:19,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1594321517, now seen corresponding path program 1 times [2023-12-21 11:18:19,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:18:19,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924480795] [2023-12-21 11:18:19,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:18:19,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:18:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:19,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:18:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:19,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:18:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:19,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 11:18:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:19,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 11:18:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:19,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:18:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:19,402 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 11:18:19,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:18:19,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924480795] [2023-12-21 11:18:19,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924480795] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:18:19,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:18:19,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:18:19,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863577687] [2023-12-21 11:18:19,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:18:19,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:18:19,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:18:19,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:18:19,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:18:19,404 INFO L87 Difference]: Start difference. First operand 121110 states and 207725 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 11:18:24,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:18:24,609 INFO L93 Difference]: Finished difference Result 272599 states and 482995 transitions. [2023-12-21 11:18:24,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:18:24,609 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 120 [2023-12-21 11:18:24,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:18:25,205 INFO L225 Difference]: With dead ends: 272599 [2023-12-21 11:18:25,205 INFO L226 Difference]: Without dead ends: 151503 [2023-12-21 11:18:25,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 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 11:18:25,377 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 766 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 11:18:25,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 743 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 11:18:25,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151503 states. [2023-12-21 11:18:30,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151503 to 121110. [2023-12-21 11:18:30,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121110 states, 110073 states have (on average 1.5637349758796435) internal successors, (172125), 110586 states have internal predecessors, (172125), 7446 states have call successors, (7446), 3078 states have call predecessors, (7446), 3590 states have return successors, (27641), 7957 states have call predecessors, (27641), 7446 states have call successors, (27641) [2023-12-21 11:18:30,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121110 states to 121110 states and 207212 transitions. [2023-12-21 11:18:30,936 INFO L78 Accepts]: Start accepts. Automaton has 121110 states and 207212 transitions. Word has length 120 [2023-12-21 11:18:30,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:18:30,937 INFO L495 AbstractCegarLoop]: Abstraction has 121110 states and 207212 transitions. [2023-12-21 11:18:30,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 11:18:30,937 INFO L276 IsEmpty]: Start isEmpty. Operand 121110 states and 207212 transitions. [2023-12-21 11:18:30,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 11:18:30,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:18:30,988 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] [2023-12-21 11:18:30,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 11:18:30,988 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:18:30,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:18:30,989 INFO L85 PathProgramCache]: Analyzing trace with hash 2114369557, now seen corresponding path program 1 times [2023-12-21 11:18:30,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:18:30,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676178494] [2023-12-21 11:18:30,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:18:30,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:18:30,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:31,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:18:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:31,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:18:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:31,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 11:18:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:31,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 11:18:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:31,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:18:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:31,098 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 11:18:31,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:18:31,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676178494] [2023-12-21 11:18:31,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676178494] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:18:31,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:18:31,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:18:31,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114675328] [2023-12-21 11:18:31,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:18:31,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:18:31,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:18:31,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:18:31,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:18:31,100 INFO L87 Difference]: Start difference. First operand 121110 states and 207212 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 4 states have internal predecessors, (110), 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 11:18:38,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:18:38,730 INFO L93 Difference]: Finished difference Result 346599 states and 587227 transitions. [2023-12-21 11:18:38,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:18:38,731 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 4 states have internal predecessors, (110), 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 120 [2023-12-21 11:18:38,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:18:39,524 INFO L225 Difference]: With dead ends: 346599 [2023-12-21 11:18:39,524 INFO L226 Difference]: Without dead ends: 225504 [2023-12-21 11:18:39,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-21 11:18:39,727 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 1320 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 2120 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1357 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 2211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-21 11:18:39,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1357 Valid, 1126 Invalid, 2211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2120 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-21 11:18:39,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225504 states. [2023-12-21 11:18:46,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225504 to 181109. [2023-12-21 11:18:46,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181109 states, 164416 states have (on average 1.5569895873880888) internal successors, (255994), 165442 states have internal predecessors, (255994), 11304 states have call successors, (11304), 4620 states have call predecessors, (11304), 5388 states have return successors, (38061), 11558 states have call predecessors, (38061), 11304 states have call successors, (38061) [2023-12-21 11:18:47,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181109 states to 181109 states and 305359 transitions. [2023-12-21 11:18:47,436 INFO L78 Accepts]: Start accepts. Automaton has 181109 states and 305359 transitions. Word has length 120 [2023-12-21 11:18:47,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:18:47,437 INFO L495 AbstractCegarLoop]: Abstraction has 181109 states and 305359 transitions. [2023-12-21 11:18:47,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 4 states have internal predecessors, (110), 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 11:18:47,437 INFO L276 IsEmpty]: Start isEmpty. Operand 181109 states and 305359 transitions. [2023-12-21 11:18:47,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-12-21 11:18:47,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:18:47,941 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:18:47,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 11:18:47,941 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:18:47,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:18:47,942 INFO L85 PathProgramCache]: Analyzing trace with hash -684539455, now seen corresponding path program 1 times [2023-12-21 11:18:47,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:18:47,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886956089] [2023-12-21 11:18:47,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:18:47,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:18:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:47,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:18:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:48,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:18:48,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:48,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 11:18:48,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:48,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 11:18:48,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:48,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:18:48,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:48,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:18:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:48,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-21 11:18:48,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:48,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-12-21 11:18:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:48,062 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 11:18:48,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:18:48,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886956089] [2023-12-21 11:18:48,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886956089] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:18:48,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805234585] [2023-12-21 11:18:48,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:18:48,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:18:48,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:18:48,065 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:18:48,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 11:18:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:48,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 11:18:48,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:18:48,308 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-12-21 11:18:48,308 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 11:18:48,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805234585] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:18:48,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 11:18:48,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-21 11:18:48,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054786832] [2023-12-21 11:18:48,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:18:48,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:18:48,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:18:48,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:18:48,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:18:48,310 INFO L87 Difference]: Start difference. First operand 181109 states and 305359 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)