/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/transmitter.08.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 11:21:35,706 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 11:21:35,761 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 11:21:35,764 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 11:21:35,764 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 11:21:35,777 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 11:21:35,778 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 11:21:35,778 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 11:21:35,779 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 11:21:35,779 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 11:21:35,779 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 11:21:35,779 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 11:21:35,781 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 11:21:35,781 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 11:21:35,782 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 11:21:35,782 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 11:21:35,782 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 11:21:35,782 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 11:21:35,783 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 11:21:35,783 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 11:21:35,783 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 11:21:35,786 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 11:21:35,786 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 11:21:35,786 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 11:21:35,786 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 11:21:35,787 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 11:21:35,787 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 11:21:35,787 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 11:21:35,787 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 11:21:35,787 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 11:21:35,788 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 11:21:35,788 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 11:21:35,788 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:21:35,788 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 11:21:35,789 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 11:21:35,789 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 11:21:35,789 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 11:21:35,789 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 11:21:35,789 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 11:21:35,790 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 11:21:35,790 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 11:21:35,792 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 11:21:35,792 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 11:21:35,793 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 11:21:35,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 11:21:35,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 11:21:35,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 11:21:36,000 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 11:21:36,001 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 11:21:36,001 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.08.cil.c [2023-12-21 11:21:36,934 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 11:21:37,105 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 11:21:37,106 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.08.cil.c [2023-12-21 11:21:37,118 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36af72321/e6bb8fc652214c11a45234086cacd1f2/FLAGf97b44e5e [2023-12-21 11:21:37,127 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36af72321/e6bb8fc652214c11a45234086cacd1f2 [2023-12-21 11:21:37,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 11:21:37,130 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 11:21:37,130 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 11:21:37,130 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 11:21:37,135 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 11:21:37,136 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:21:37" (1/1) ... [2023-12-21 11:21:37,136 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bd9a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:21:37, skipping insertion in model container [2023-12-21 11:21:37,136 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:21:37" (1/1) ... [2023-12-21 11:21:37,178 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 11:21:37,281 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/transmitter.08.cil.c[706,719] [2023-12-21 11:21:37,353 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:21:37,368 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 11:21:37,375 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/transmitter.08.cil.c[706,719] [2023-12-21 11:21:37,414 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:21:37,433 INFO L206 MainTranslator]: Completed translation [2023-12-21 11:21:37,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:21:37 WrapperNode [2023-12-21 11:21:37,434 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 11:21:37,434 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 11:21:37,434 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 11:21:37,434 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 11:21:37,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:21:37" (1/1) ... [2023-12-21 11:21:37,465 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:21:37" (1/1) ... [2023-12-21 11:21:37,492 INFO L138 Inliner]: procedures = 44, calls = 54, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 623 [2023-12-21 11:21:37,493 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 11:21:37,493 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 11:21:37,493 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 11:21:37,493 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 11:21:37,501 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:21:37" (1/1) ... [2023-12-21 11:21:37,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:21:37" (1/1) ... [2023-12-21 11:21:37,509 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:21:37" (1/1) ... [2023-12-21 11:21:37,528 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 11:21:37,528 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:21:37" (1/1) ... [2023-12-21 11:21:37,529 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:21:37" (1/1) ... [2023-12-21 11:21:37,536 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:21:37" (1/1) ... [2023-12-21 11:21:37,542 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:21:37" (1/1) ... [2023-12-21 11:21:37,556 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:21:37" (1/1) ... [2023-12-21 11:21:37,558 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:21:37" (1/1) ... [2023-12-21 11:21:37,576 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 11:21:37,577 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 11:21:37,577 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 11:21:37,577 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 11:21:37,578 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:21:37" (1/1) ... [2023-12-21 11:21:37,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:21:37,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:21:37,602 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 11:21:37,628 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 11:21:37,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 11:21:37,629 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-21 11:21:37,629 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-21 11:21:37,629 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-21 11:21:37,629 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-21 11:21:37,629 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-21 11:21:37,629 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-21 11:21:37,629 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-21 11:21:37,629 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-21 11:21:37,629 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-21 11:21:37,630 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-21 11:21:37,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 11:21:37,630 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-21 11:21:37,630 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-21 11:21:37,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 11:21:37,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 11:21:37,730 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 11:21:37,733 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 11:21:38,283 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 11:21:38,320 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 11:21:38,321 INFO L309 CfgBuilder]: Removed 12 assume(true) statements. [2023-12-21 11:21:38,321 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:21:38 BoogieIcfgContainer [2023-12-21 11:21:38,321 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 11:21:38,323 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 11:21:38,323 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 11:21:38,325 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 11:21:38,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:21:37" (1/3) ... [2023-12-21 11:21:38,326 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c752a61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:21:38, skipping insertion in model container [2023-12-21 11:21:38,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:21:37" (2/3) ... [2023-12-21 11:21:38,326 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c752a61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:21:38, skipping insertion in model container [2023-12-21 11:21:38,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:21:38" (3/3) ... [2023-12-21 11:21:38,327 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.08.cil.c [2023-12-21 11:21:38,339 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 11:21:38,340 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 11:21:38,382 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 11:21:38,386 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;@754e6c6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 11:21:38,386 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 11:21:38,390 INFO L276 IsEmpty]: Start isEmpty. Operand has 251 states, 222 states have (on average 1.7252252252252251) internal successors, (383), 224 states have internal predecessors, (383), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-21 11:21:38,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-21 11:21:38,402 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:21:38,402 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:21:38,403 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:21:38,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:21:38,406 INFO L85 PathProgramCache]: Analyzing trace with hash -178011246, now seen corresponding path program 1 times [2023-12-21 11:21:38,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:21:38,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788819693] [2023-12-21 11:21:38,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:21:38,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:21:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:38,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:21:38,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:38,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:21:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:38,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 11:21:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:38,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:21:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:38,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:21:38,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:38,877 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 11:21:38,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:21:38,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788819693] [2023-12-21 11:21:38,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788819693] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:21:38,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:21:38,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:21:38,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092179042] [2023-12-21 11:21:38,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:21:38,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:21:38,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:21:38,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:21:38,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:21:38,918 INFO L87 Difference]: Start difference. First operand has 251 states, 222 states have (on average 1.7252252252252251) internal successors, (383), 224 states have internal predecessors, (383), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 3 states have internal predecessors, (115), 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 11:21:39,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:21:39,883 INFO L93 Difference]: Finished difference Result 580 states and 988 transitions. [2023-12-21 11:21:39,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 11:21:39,885 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 3 states have internal predecessors, (115), 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 125 [2023-12-21 11:21:39,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:21:39,894 INFO L225 Difference]: With dead ends: 580 [2023-12-21 11:21:39,894 INFO L226 Difference]: Without dead ends: 337 [2023-12-21 11:21:39,898 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 11:21:39,900 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 674 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 11:21:39,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 447 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 11:21:39,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2023-12-21 11:21:39,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 249. [2023-12-21 11:21:39,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 221 states have (on average 1.6063348416289593) internal successors, (355), 222 states have internal predecessors, (355), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-21 11:21:39,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 397 transitions. [2023-12-21 11:21:39,944 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 397 transitions. Word has length 125 [2023-12-21 11:21:39,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:21:39,944 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 397 transitions. [2023-12-21 11:21:39,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 3 states have internal predecessors, (115), 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 11:21:39,944 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 397 transitions. [2023-12-21 11:21:39,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-21 11:21:39,946 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:21:39,946 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:21:39,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 11:21:39,947 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:21:39,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:21:39,947 INFO L85 PathProgramCache]: Analyzing trace with hash 2115069780, now seen corresponding path program 1 times [2023-12-21 11:21:39,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:21:39,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169435864] [2023-12-21 11:21:39,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:21:39,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:21:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:40,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:21:40,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:40,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:21:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:40,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 11:21:40,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:40,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:21:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:40,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:21:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:40,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:21:40,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:21:40,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169435864] [2023-12-21 11:21:40,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169435864] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:21:40,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:21:40,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:21:40,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866051091] [2023-12-21 11:21:40,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:21:40,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:21:40,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:21:40,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:21:40,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:21:40,217 INFO L87 Difference]: Start difference. First operand 249 states and 397 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 4 states have internal predecessors, (115), 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 11:21:41,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:21:41,698 INFO L93 Difference]: Finished difference Result 905 states and 1486 transitions. [2023-12-21 11:21:41,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:21:41,699 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 4 states have internal predecessors, (115), 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 125 [2023-12-21 11:21:41,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:21:41,705 INFO L225 Difference]: With dead ends: 905 [2023-12-21 11:21:41,705 INFO L226 Difference]: Without dead ends: 670 [2023-12-21 11:21:41,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:21:41,709 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 1014 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 1574 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 1663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:21:41,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1028 Valid, 748 Invalid, 1663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1574 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 11:21:41,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2023-12-21 11:21:41,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 495. [2023-12-21 11:21:41,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 444 states have (on average 1.6126126126126126) internal successors, (716), 446 states have internal predecessors, (716), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2023-12-21 11:21:41,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 793 transitions. [2023-12-21 11:21:41,742 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 793 transitions. Word has length 125 [2023-12-21 11:21:41,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:21:41,743 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 793 transitions. [2023-12-21 11:21:41,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 4 states have internal predecessors, (115), 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 11:21:41,743 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 793 transitions. [2023-12-21 11:21:41,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-21 11:21:41,745 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:21:41,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:21:41,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 11:21:41,746 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:21:41,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:21:41,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1592641033, now seen corresponding path program 1 times [2023-12-21 11:21:41,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:21:41,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856535034] [2023-12-21 11:21:41,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:21:41,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:21:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:41,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:21:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:41,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:21:41,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:41,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 11:21:41,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:41,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:21:41,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:41,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:21:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:41,971 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 11:21:41,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:21:41,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856535034] [2023-12-21 11:21:41,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856535034] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:21:41,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:21:41,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:21:41,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042786378] [2023-12-21 11:21:41,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:21:41,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:21:41,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:21:41,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:21:41,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:21:41,977 INFO L87 Difference]: Start difference. First operand 495 states and 793 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 11:21:44,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:21:44,513 INFO L93 Difference]: Finished difference Result 1601 states and 2604 transitions. [2023-12-21 11:21:44,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 11:21:44,515 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 125 [2023-12-21 11:21:44,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:21:44,519 INFO L225 Difference]: With dead ends: 1601 [2023-12-21 11:21:44,519 INFO L226 Difference]: Without dead ends: 1120 [2023-12-21 11:21:44,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:21:44,527 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 1106 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 3195 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 1430 SdHoareTripleChecker+Invalid, 3248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 3195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:21:44,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1120 Valid, 1430 Invalid, 3248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 3195 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-21 11:21:44,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2023-12-21 11:21:44,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 723. [2023-12-21 11:21:44,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 649 states have (on average 1.6040061633281972) internal successors, (1041), 652 states have internal predecessors, (1041), 53 states have call successors, (53), 18 states have call predecessors, (53), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2023-12-21 11:21:44,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1152 transitions. [2023-12-21 11:21:44,573 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1152 transitions. Word has length 125 [2023-12-21 11:21:44,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:21:44,573 INFO L495 AbstractCegarLoop]: Abstraction has 723 states and 1152 transitions. [2023-12-21 11:21:44,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 11:21:44,574 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1152 transitions. [2023-12-21 11:21:44,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-21 11:21:44,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:21:44,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:21:44,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 11:21:44,576 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:21:44,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:21:44,576 INFO L85 PathProgramCache]: Analyzing trace with hash 729160885, now seen corresponding path program 1 times [2023-12-21 11:21:44,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:21:44,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700437360] [2023-12-21 11:21:44,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:21:44,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:21:44,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:44,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:21:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:44,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:21:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:44,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 11:21:44,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:44,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:21:44,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:44,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:21:44,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:44,750 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 11:21:44,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:21:44,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700437360] [2023-12-21 11:21:44,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700437360] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:21:44,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:21:44,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:21:44,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003727617] [2023-12-21 11:21:44,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:21:44,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:21:44,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:21:44,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:21:44,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:21:44,752 INFO L87 Difference]: Start difference. First operand 723 states and 1152 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 11:21:47,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:21:47,220 INFO L93 Difference]: Finished difference Result 2467 states and 4001 transitions. [2023-12-21 11:21:47,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 11:21:47,221 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 125 [2023-12-21 11:21:47,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:21:47,229 INFO L225 Difference]: With dead ends: 2467 [2023-12-21 11:21:47,229 INFO L226 Difference]: Without dead ends: 1758 [2023-12-21 11:21:47,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:21:47,235 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 1104 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 3191 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 1428 SdHoareTripleChecker+Invalid, 3246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 3191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-21 11:21:47,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1118 Valid, 1428 Invalid, 3246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 3191 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-21 11:21:47,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1758 states. [2023-12-21 11:21:47,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1758 to 1180. [2023-12-21 11:21:47,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 1060 states have (on average 1.5962264150943397) internal successors, (1692), 1065 states have internal predecessors, (1692), 85 states have call successors, (85), 30 states have call predecessors, (85), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2023-12-21 11:21:47,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1875 transitions. [2023-12-21 11:21:47,301 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1875 transitions. Word has length 125 [2023-12-21 11:21:47,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:21:47,301 INFO L495 AbstractCegarLoop]: Abstraction has 1180 states and 1875 transitions. [2023-12-21 11:21:47,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 11:21:47,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1875 transitions. [2023-12-21 11:21:47,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-21 11:21:47,303 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:21:47,303 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:21:47,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 11:21:47,303 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:21:47,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:21:47,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1412699593, now seen corresponding path program 1 times [2023-12-21 11:21:47,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:21:47,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508797079] [2023-12-21 11:21:47,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:21:47,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:21:47,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:47,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:21:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:47,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:21:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:47,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 11:21:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:47,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:21:47,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:47,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:21:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:47,463 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 11:21:47,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:21:47,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508797079] [2023-12-21 11:21:47,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508797079] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:21:47,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:21:47,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:21:47,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520404869] [2023-12-21 11:21:47,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:21:47,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:21:47,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:21:47,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:21:47,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:21:47,471 INFO L87 Difference]: Start difference. First operand 1180 states and 1875 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 11:21:48,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:21:48,480 INFO L93 Difference]: Finished difference Result 2808 states and 4544 transitions. [2023-12-21 11:21:48,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:21:48,481 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 125 [2023-12-21 11:21:48,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:21:48,506 INFO L225 Difference]: With dead ends: 2808 [2023-12-21 11:21:48,506 INFO L226 Difference]: Without dead ends: 1642 [2023-12-21 11:21:48,508 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 11:21:48,509 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 801 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 1272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 11:21:48,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 721 Invalid, 1272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 11:21:48,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2023-12-21 11:21:48,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1180. [2023-12-21 11:21:48,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 1060 states have (on average 1.5915094339622642) internal successors, (1687), 1065 states have internal predecessors, (1687), 85 states have call successors, (85), 30 states have call predecessors, (85), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2023-12-21 11:21:48,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1870 transitions. [2023-12-21 11:21:48,558 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1870 transitions. Word has length 125 [2023-12-21 11:21:48,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:21:48,558 INFO L495 AbstractCegarLoop]: Abstraction has 1180 states and 1870 transitions. [2023-12-21 11:21:48,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 11:21:48,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1870 transitions. [2023-12-21 11:21:48,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-21 11:21:48,560 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:21:48,560 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:21:48,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 11:21:48,561 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:21:48,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:21:48,561 INFO L85 PathProgramCache]: Analyzing trace with hash -2035981195, now seen corresponding path program 1 times [2023-12-21 11:21:48,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:21:48,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971149368] [2023-12-21 11:21:48,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:21:48,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:21:48,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:48,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:21:48,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:48,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:21:48,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:48,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 11:21:48,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:48,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:21:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:48,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:21:48,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:48,700 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 11:21:48,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:21:48,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971149368] [2023-12-21 11:21:48,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971149368] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:21:48,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:21:48,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:21:48,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687372616] [2023-12-21 11:21:48,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:21:48,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:21:48,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:21:48,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:21:48,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:21:48,702 INFO L87 Difference]: Start difference. First operand 1180 states and 1870 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 11:21:49,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:21:49,587 INFO L93 Difference]: Finished difference Result 2802 states and 4518 transitions. [2023-12-21 11:21:49,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:21:49,587 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 125 [2023-12-21 11:21:49,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:21:49,593 INFO L225 Difference]: With dead ends: 2802 [2023-12-21 11:21:49,593 INFO L226 Difference]: Without dead ends: 1636 [2023-12-21 11:21:49,595 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 11:21:49,596 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 853 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 11:21:49,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [868 Valid, 605 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 11:21:49,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2023-12-21 11:21:49,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1180. [2023-12-21 11:21:49,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 1060 states have (on average 1.5867924528301887) internal successors, (1682), 1065 states have internal predecessors, (1682), 85 states have call successors, (85), 30 states have call predecessors, (85), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2023-12-21 11:21:49,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1865 transitions. [2023-12-21 11:21:49,637 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1865 transitions. Word has length 125 [2023-12-21 11:21:49,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:21:49,637 INFO L495 AbstractCegarLoop]: Abstraction has 1180 states and 1865 transitions. [2023-12-21 11:21:49,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 11:21:49,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1865 transitions. [2023-12-21 11:21:49,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-21 11:21:49,640 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:21:49,640 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:21:49,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 11:21:49,640 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:21:49,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:21:49,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1917539721, now seen corresponding path program 1 times [2023-12-21 11:21:49,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:21:49,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596546176] [2023-12-21 11:21:49,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:21:49,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:21:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:49,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:21:49,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:49,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:21:49,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:49,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 11:21:49,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:49,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:21:49,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:49,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:21:49,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:49,788 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 11:21:49,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:21:49,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596546176] [2023-12-21 11:21:49,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596546176] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:21:49,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:21:49,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:21:49,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185198811] [2023-12-21 11:21:49,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:21:49,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:21:49,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:21:49,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:21:49,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:21:49,790 INFO L87 Difference]: Start difference. First operand 1180 states and 1865 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 11:21:50,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:21:50,785 INFO L93 Difference]: Finished difference Result 2795 states and 4490 transitions. [2023-12-21 11:21:50,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:21:50,786 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 125 [2023-12-21 11:21:50,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:21:50,792 INFO L225 Difference]: With dead ends: 2795 [2023-12-21 11:21:50,792 INFO L226 Difference]: Without dead ends: 1629 [2023-12-21 11:21:50,795 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 11:21:50,796 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 743 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 11:21:50,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 722 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 11:21:50,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2023-12-21 11:21:50,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1180. [2023-12-21 11:21:50,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 1060 states have (on average 1.5820754716981131) internal successors, (1677), 1065 states have internal predecessors, (1677), 85 states have call successors, (85), 30 states have call predecessors, (85), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2023-12-21 11:21:50,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1860 transitions. [2023-12-21 11:21:50,842 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1860 transitions. Word has length 125 [2023-12-21 11:21:50,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:21:50,843 INFO L495 AbstractCegarLoop]: Abstraction has 1180 states and 1860 transitions. [2023-12-21 11:21:50,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 11:21:50,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1860 transitions. [2023-12-21 11:21:50,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-21 11:21:50,845 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:21:50,845 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:21:50,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 11:21:50,845 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:21:50,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:21:50,846 INFO L85 PathProgramCache]: Analyzing trace with hash -528245707, now seen corresponding path program 1 times [2023-12-21 11:21:50,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:21:50,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122603925] [2023-12-21 11:21:50,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:21:50,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:21:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:50,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:21:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:50,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:21:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:50,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 11:21:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:50,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:21:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:50,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:21:50,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:50,984 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 11:21:50,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:21:50,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122603925] [2023-12-21 11:21:50,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122603925] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:21:50,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:21:50,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:21:50,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389603441] [2023-12-21 11:21:50,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:21:50,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:21:50,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:21:50,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:21:50,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:21:50,985 INFO L87 Difference]: Start difference. First operand 1180 states and 1860 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 11:21:53,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:21:53,295 INFO L93 Difference]: Finished difference Result 4107 states and 6560 transitions. [2023-12-21 11:21:53,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 11:21:53,295 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 125 [2023-12-21 11:21:53,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:21:53,305 INFO L225 Difference]: With dead ends: 4107 [2023-12-21 11:21:53,305 INFO L226 Difference]: Without dead ends: 2941 [2023-12-21 11:21:53,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:21:53,310 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 1082 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 3105 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 1428 SdHoareTripleChecker+Invalid, 3160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 3105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-21 11:21:53,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1096 Valid, 1428 Invalid, 3160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 3105 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-21 11:21:53,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2023-12-21 11:21:53,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 2107. [2023-12-21 11:21:53,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2107 states, 1895 states have (on average 1.5736147757255936) internal successors, (2982), 1904 states have internal predecessors, (2982), 149 states have call successors, (149), 54 states have call predecessors, (149), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2023-12-21 11:21:53,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2107 states to 2107 states and 3315 transitions. [2023-12-21 11:21:53,446 INFO L78 Accepts]: Start accepts. Automaton has 2107 states and 3315 transitions. Word has length 125 [2023-12-21 11:21:53,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:21:53,446 INFO L495 AbstractCegarLoop]: Abstraction has 2107 states and 3315 transitions. [2023-12-21 11:21:53,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 11:21:53,447 INFO L276 IsEmpty]: Start isEmpty. Operand 2107 states and 3315 transitions. [2023-12-21 11:21:53,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-21 11:21:53,449 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:21:53,449 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:21:53,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 11:21:53,449 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:21:53,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:21:53,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1733327543, now seen corresponding path program 1 times [2023-12-21 11:21:53,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:21:53,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341787079] [2023-12-21 11:21:53,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:21:53,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:21:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:53,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:21:53,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:53,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:21:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:53,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 11:21:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:53,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:21:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:53,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:21:53,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:53,596 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 11:21:53,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:21:53,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341787079] [2023-12-21 11:21:53,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341787079] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:21:53,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:21:53,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:21:53,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688591346] [2023-12-21 11:21:53,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:21:53,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:21:53,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:21:53,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:21:53,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:21:53,597 INFO L87 Difference]: Start difference. First operand 2107 states and 3315 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 11:21:56,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:21:56,013 INFO L93 Difference]: Finished difference Result 7420 states and 11833 transitions. [2023-12-21 11:21:56,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 11:21:56,014 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 125 [2023-12-21 11:21:56,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:21:56,030 INFO L225 Difference]: With dead ends: 7420 [2023-12-21 11:21:56,030 INFO L226 Difference]: Without dead ends: 5327 [2023-12-21 11:21:56,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:21:56,036 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 1078 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 3077 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 1428 SdHoareTripleChecker+Invalid, 3132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 3077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-21 11:21:56,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1092 Valid, 1428 Invalid, 3132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 3077 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-21 11:21:56,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5327 states. [2023-12-21 11:21:56,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5327 to 3970. [2023-12-21 11:21:56,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3970 states, 3574 states have (on average 1.5685506435366536) internal successors, (5606), 3591 states have internal predecessors, (5606), 277 states have call successors, (277), 102 states have call predecessors, (277), 118 states have return successors, (374), 292 states have call predecessors, (374), 277 states have call successors, (374) [2023-12-21 11:21:56,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3970 states to 3970 states and 6257 transitions. [2023-12-21 11:21:56,176 INFO L78 Accepts]: Start accepts. Automaton has 3970 states and 6257 transitions. Word has length 125 [2023-12-21 11:21:56,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:21:56,176 INFO L495 AbstractCegarLoop]: Abstraction has 3970 states and 6257 transitions. [2023-12-21 11:21:56,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 11:21:56,177 INFO L276 IsEmpty]: Start isEmpty. Operand 3970 states and 6257 transitions. [2023-12-21 11:21:56,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-21 11:21:56,180 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:21:56,181 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:21:56,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 11:21:56,181 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:21:56,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:21:56,181 INFO L85 PathProgramCache]: Analyzing trace with hash 426185145, now seen corresponding path program 1 times [2023-12-21 11:21:56,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:21:56,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054875895] [2023-12-21 11:21:56,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:21:56,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:21:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:56,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:21:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:56,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:21:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:56,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 11:21:56,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:56,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:21:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:56,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:21:56,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:56,332 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 11:21:56,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:21:56,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054875895] [2023-12-21 11:21:56,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054875895] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:21:56,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:21:56,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:21:56,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376910333] [2023-12-21 11:21:56,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:21:56,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:21:56,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:21:56,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:21:56,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:21:56,334 INFO L87 Difference]: Start difference. First operand 3970 states and 6257 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 11:21:58,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:21:58,938 INFO L93 Difference]: Finished difference Result 15563 states and 24863 transitions. [2023-12-21 11:21:58,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 11:21:58,939 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 125 [2023-12-21 11:21:58,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:21:58,990 INFO L225 Difference]: With dead ends: 15563 [2023-12-21 11:21:58,990 INFO L226 Difference]: Without dead ends: 11607 [2023-12-21 11:21:59,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-12-21 11:21:59,003 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 1142 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 3080 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 3137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 3080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-21 11:21:59,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1155 Valid, 1405 Invalid, 3137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 3080 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-21 11:21:59,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11607 states. [2023-12-21 11:21:59,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11607 to 7661. [2023-12-21 11:21:59,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7661 states, 6913 states have (on average 1.5680601764790973) internal successors, (10840), 6946 states have internal predecessors, (10840), 517 states have call successors, (517), 198 states have call predecessors, (517), 230 states have return successors, (792), 548 states have call predecessors, (792), 517 states have call successors, (792) [2023-12-21 11:21:59,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7661 states to 7661 states and 12149 transitions. [2023-12-21 11:21:59,353 INFO L78 Accepts]: Start accepts. Automaton has 7661 states and 12149 transitions. Word has length 125 [2023-12-21 11:21:59,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:21:59,353 INFO L495 AbstractCegarLoop]: Abstraction has 7661 states and 12149 transitions. [2023-12-21 11:21:59,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 11:21:59,354 INFO L276 IsEmpty]: Start isEmpty. Operand 7661 states and 12149 transitions. [2023-12-21 11:21:59,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-21 11:21:59,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:21:59,362 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:21:59,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 11:21:59,362 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:21:59,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:21:59,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1971285385, now seen corresponding path program 1 times [2023-12-21 11:21:59,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:21:59,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903869184] [2023-12-21 11:21:59,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:21:59,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:21:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:59,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:21:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:59,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:21:59,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:59,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 11:21:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:59,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:21:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:59,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:21:59,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:59,487 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 11:21:59,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:21:59,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903869184] [2023-12-21 11:21:59,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903869184] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:21:59,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:21:59,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:21:59,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738865183] [2023-12-21 11:21:59,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:21:59,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:21:59,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:21:59,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:21:59,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:21:59,488 INFO L87 Difference]: Start difference. First operand 7661 states and 12149 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 11:22:00,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:22:00,648 INFO L93 Difference]: Finished difference Result 17678 states and 28470 transitions. [2023-12-21 11:22:00,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:22:00,649 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 125 [2023-12-21 11:22:00,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:22:00,684 INFO L225 Difference]: With dead ends: 17678 [2023-12-21 11:22:00,684 INFO L226 Difference]: Without dead ends: 10031 [2023-12-21 11:22:00,698 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 11:22:00,698 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 746 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 1268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 11:22:00,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 721 Invalid, 1268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 11:22:00,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10031 states. [2023-12-21 11:22:01,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10031 to 7661. [2023-12-21 11:22:01,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7661 states, 6913 states have (on average 1.5632865615507017) internal successors, (10807), 6946 states have internal predecessors, (10807), 517 states have call successors, (517), 198 states have call predecessors, (517), 230 states have return successors, (792), 548 states have call predecessors, (792), 517 states have call successors, (792) [2023-12-21 11:22:01,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7661 states to 7661 states and 12116 transitions. [2023-12-21 11:22:01,039 INFO L78 Accepts]: Start accepts. Automaton has 7661 states and 12116 transitions. Word has length 125 [2023-12-21 11:22:01,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:22:01,039 INFO L495 AbstractCegarLoop]: Abstraction has 7661 states and 12116 transitions. [2023-12-21 11:22:01,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 11:22:01,040 INFO L276 IsEmpty]: Start isEmpty. Operand 7661 states and 12116 transitions. [2023-12-21 11:22:01,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-21 11:22:01,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:22:01,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:22:01,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 11:22:01,049 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:22:01,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:22:01,050 INFO L85 PathProgramCache]: Analyzing trace with hash -940244487, now seen corresponding path program 1 times [2023-12-21 11:22:01,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:22:01,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998073108] [2023-12-21 11:22:01,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:22:01,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:22:01,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:01,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:22:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:01,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:22:01,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:01,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 11:22:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:01,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:22:01,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:01,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:22:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:01,179 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 11:22:01,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:22:01,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998073108] [2023-12-21 11:22:01,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998073108] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:22:01,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:22:01,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:22:01,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815546460] [2023-12-21 11:22:01,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:22:01,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:22:01,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:22:01,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:22:01,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:22:01,181 INFO L87 Difference]: Start difference. First operand 7661 states and 12116 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 11:22:03,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:22:03,561 INFO L93 Difference]: Finished difference Result 29398 states and 47069 transitions. [2023-12-21 11:22:03,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 11:22:03,562 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 125 [2023-12-21 11:22:03,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:22:03,625 INFO L225 Difference]: With dead ends: 29398 [2023-12-21 11:22:03,625 INFO L226 Difference]: Without dead ends: 21751 [2023-12-21 11:22:03,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-12-21 11:22:03,650 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 1327 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 2317 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 2401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-21 11:22:03,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1349 Valid, 930 Invalid, 2401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2317 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-21 11:22:03,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21751 states. [2023-12-21 11:22:04,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21751 to 15091. [2023-12-21 11:22:04,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15091 states, 13655 states have (on average 1.5615525448553644) internal successors, (21323), 13720 states have internal predecessors, (21323), 981 states have call successors, (981), 390 states have call predecessors, (981), 454 states have return successors, (1774), 1044 states have call predecessors, (1774), 981 states have call successors, (1774) [2023-12-21 11:22:04,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15091 states to 15091 states and 24078 transitions. [2023-12-21 11:22:04,396 INFO L78 Accepts]: Start accepts. Automaton has 15091 states and 24078 transitions. Word has length 125 [2023-12-21 11:22:04,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:22:04,396 INFO L495 AbstractCegarLoop]: Abstraction has 15091 states and 24078 transitions. [2023-12-21 11:22:04,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 11:22:04,396 INFO L276 IsEmpty]: Start isEmpty. Operand 15091 states and 24078 transitions. [2023-12-21 11:22:04,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-21 11:22:04,413 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:22:04,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:22:04,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 11:22:04,413 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:22:04,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:22:04,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1448319543, now seen corresponding path program 1 times [2023-12-21 11:22:04,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:22:04,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016647347] [2023-12-21 11:22:04,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:22:04,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:22:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:04,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:22:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:04,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:22:04,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:04,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 11:22:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:04,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:22:04,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:04,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:22:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:04,540 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 11:22:04,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:22:04,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016647347] [2023-12-21 11:22:04,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016647347] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:22:04,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:22:04,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:22:04,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702553596] [2023-12-21 11:22:04,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:22:04,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:22:04,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:22:04,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:22:04,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:22:04,543 INFO L87 Difference]: Start difference. First operand 15091 states and 24078 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 11:22:07,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:22:07,762 INFO L93 Difference]: Finished difference Result 57090 states and 92197 transitions. [2023-12-21 11:22:07,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 11:22:07,762 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 125 [2023-12-21 11:22:07,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:22:07,886 INFO L225 Difference]: With dead ends: 57090 [2023-12-21 11:22:07,887 INFO L226 Difference]: Without dead ends: 42013 [2023-12-21 11:22:07,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-12-21 11:22:07,931 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 1106 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 3029 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 3086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 3029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-21 11:22:07,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1119 Valid, 1405 Invalid, 3086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 3029 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-21 11:22:07,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42013 states. [2023-12-21 11:22:09,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42013 to 29948. [2023-12-21 11:22:09,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29948 states, 27168 states have (on average 1.5611381036513545) internal successors, (42413), 27297 states have internal predecessors, (42413), 1877 states have call successors, (1877), 774 states have call predecessors, (1877), 902 states have return successors, (4192), 2004 states have call predecessors, (4192), 1877 states have call successors, (4192) [2023-12-21 11:22:09,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29948 states to 29948 states and 48482 transitions. [2023-12-21 11:22:09,498 INFO L78 Accepts]: Start accepts. Automaton has 29948 states and 48482 transitions. Word has length 125 [2023-12-21 11:22:09,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:22:09,499 INFO L495 AbstractCegarLoop]: Abstraction has 29948 states and 48482 transitions. [2023-12-21 11:22:09,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 11:22:09,499 INFO L276 IsEmpty]: Start isEmpty. Operand 29948 states and 48482 transitions. [2023-12-21 11:22:09,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-21 11:22:09,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:22:09,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:22:09,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 11:22:09,543 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:22:09,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:22:09,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1245576647, now seen corresponding path program 1 times [2023-12-21 11:22:09,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:22:09,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613923236] [2023-12-21 11:22:09,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:22:09,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:22:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:09,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:22:09,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:09,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:22:09,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:09,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 11:22:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:09,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:22:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:09,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:22:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:09,675 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 11:22:09,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:22:09,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613923236] [2023-12-21 11:22:09,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613923236] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:22:09,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:22:09,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:22:09,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93807837] [2023-12-21 11:22:09,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:22:09,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:22:09,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:22:09,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:22:09,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:22:09,677 INFO L87 Difference]: Start difference. First operand 29948 states and 48482 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 11:22:11,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:22:11,621 INFO L93 Difference]: Finished difference Result 68230 states and 112619 transitions. [2023-12-21 11:22:11,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:22:11,621 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 125 [2023-12-21 11:22:11,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:22:11,737 INFO L225 Difference]: With dead ends: 68230 [2023-12-21 11:22:11,737 INFO L226 Difference]: Without dead ends: 38296 [2023-12-21 11:22:11,778 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 11:22:11,779 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 746 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 1232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 11:22:11,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 721 Invalid, 1232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1175 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 11:22:11,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38296 states. [2023-12-21 11:22:12,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38296 to 29948. [2023-12-21 11:22:12,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29948 states, 27168 states have (on average 1.5563898704358068) internal successors, (42284), 27297 states have internal predecessors, (42284), 1877 states have call successors, (1877), 774 states have call predecessors, (1877), 902 states have return successors, (4192), 2004 states have call predecessors, (4192), 1877 states have call successors, (4192) [2023-12-21 11:22:13,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29948 states to 29948 states and 48353 transitions. [2023-12-21 11:22:13,016 INFO L78 Accepts]: Start accepts. Automaton has 29948 states and 48353 transitions. Word has length 125 [2023-12-21 11:22:13,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:22:13,017 INFO L495 AbstractCegarLoop]: Abstraction has 29948 states and 48353 transitions. [2023-12-21 11:22:13,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 11:22:13,017 INFO L276 IsEmpty]: Start isEmpty. Operand 29948 states and 48353 transitions. [2023-12-21 11:22:13,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-21 11:22:13,050 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:22:13,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:22:13,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 11:22:13,051 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:22:13,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:22:13,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1992659447, now seen corresponding path program 1 times [2023-12-21 11:22:13,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:22:13,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660858716] [2023-12-21 11:22:13,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:22:13,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:22:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:13,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:22:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:13,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:22:13,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:13,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 11:22:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:13,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:22:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:13,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:22:13,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:13,194 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 11:22:13,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:22:13,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660858716] [2023-12-21 11:22:13,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660858716] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:22:13,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:22:13,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:22:13,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637867989] [2023-12-21 11:22:13,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:22:13,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:22:13,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:22:13,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:22:13,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:22:13,196 INFO L87 Difference]: Start difference. First operand 29948 states and 48353 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 11:22:17,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:22:17,434 INFO L93 Difference]: Finished difference Result 109847 states and 179523 transitions. [2023-12-21 11:22:17,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 11:22:17,435 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 125 [2023-12-21 11:22:17,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:22:17,702 INFO L225 Difference]: With dead ends: 109847 [2023-12-21 11:22:17,702 INFO L226 Difference]: Without dead ends: 79913 [2023-12-21 11:22:17,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-12-21 11:22:17,792 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 1086 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 2986 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 3043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-21 11:22:17,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1099 Valid, 1405 Invalid, 3043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2986 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-21 11:22:17,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79913 states. [2023-12-21 11:22:20,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79913 to 59790. [2023-12-21 11:22:20,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59790 states, 54386 states have (on average 1.5554002868385246) internal successors, (84592), 54643 states have internal predecessors, (84592), 3605 states have call successors, (3605), 1542 states have call predecessors, (3605), 1798 states have return successors, (10422), 3860 states have call predecessors, (10422), 3605 states have call successors, (10422) [2023-12-21 11:22:20,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59790 states to 59790 states and 98619 transitions. [2023-12-21 11:22:20,707 INFO L78 Accepts]: Start accepts. Automaton has 59790 states and 98619 transitions. Word has length 125 [2023-12-21 11:22:20,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:22:20,707 INFO L495 AbstractCegarLoop]: Abstraction has 59790 states and 98619 transitions. [2023-12-21 11:22:20,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 11:22:20,707 INFO L276 IsEmpty]: Start isEmpty. Operand 59790 states and 98619 transitions. [2023-12-21 11:22:20,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-21 11:22:20,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:22:20,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:22:20,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 11:22:20,754 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:22:20,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:22:20,754 INFO L85 PathProgramCache]: Analyzing trace with hash -950922631, now seen corresponding path program 1 times [2023-12-21 11:22:20,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:22:20,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825216639] [2023-12-21 11:22:20,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:22:20,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:22:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:20,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:22:20,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:20,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:22:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:20,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 11:22:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:20,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:22:20,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:20,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:22:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:20,870 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 11:22:20,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:22:20,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825216639] [2023-12-21 11:22:20,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825216639] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:22:20,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:22:20,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:22:20,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145918327] [2023-12-21 11:22:20,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:22:20,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:22:20,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:22:20,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:22:20,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:22:20,873 INFO L87 Difference]: Start difference. First operand 59790 states and 98619 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 11:22:23,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:22:23,744 INFO L93 Difference]: Finished difference Result 134948 states and 227942 transitions. [2023-12-21 11:22:23,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:22:23,745 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 125 [2023-12-21 11:22:23,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:22:23,953 INFO L225 Difference]: With dead ends: 134948 [2023-12-21 11:22:23,953 INFO L226 Difference]: Without dead ends: 75172 [2023-12-21 11:22:24,038 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 11:22:24,039 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 854 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 11:22:24,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 604 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 11:22:24,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75172 states. [2023-12-21 11:22:26,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75172 to 59790. [2023-12-21 11:22:26,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59790 states, 54386 states have (on average 1.5506748060162543) internal successors, (84335), 54643 states have internal predecessors, (84335), 3605 states have call successors, (3605), 1542 states have call predecessors, (3605), 1798 states have return successors, (10422), 3860 states have call predecessors, (10422), 3605 states have call successors, (10422) [2023-12-21 11:22:26,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59790 states to 59790 states and 98362 transitions. [2023-12-21 11:22:26,694 INFO L78 Accepts]: Start accepts. Automaton has 59790 states and 98362 transitions. Word has length 125 [2023-12-21 11:22:26,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:22:26,695 INFO L495 AbstractCegarLoop]: Abstraction has 59790 states and 98362 transitions. [2023-12-21 11:22:26,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 11:22:26,695 INFO L276 IsEmpty]: Start isEmpty. Operand 59790 states and 98362 transitions. [2023-12-21 11:22:26,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-21 11:22:26,743 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:22:26,744 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:22:26,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 11:22:26,744 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:22:26,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:22:26,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1834431621, now seen corresponding path program 1 times [2023-12-21 11:22:26,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:22:26,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268302147] [2023-12-21 11:22:26,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:22:26,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:22:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:26,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:22:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:26,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:22:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:26,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 11:22:26,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:26,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:22:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:26,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:22:26,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:26,855 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 11:22:26,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:22:26,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268302147] [2023-12-21 11:22:26,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268302147] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:22:26,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:22:26,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:22:26,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463615164] [2023-12-21 11:22:26,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:22:26,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:22:26,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:22:26,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:22:26,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:22:26,856 INFO L87 Difference]: Start difference. First operand 59790 states and 98362 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 4 states have internal predecessors, (115), 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 11:22:29,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:22:29,843 INFO L93 Difference]: Finished difference Result 132941 states and 219659 transitions. [2023-12-21 11:22:29,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 11:22:29,843 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 4 states have internal predecessors, (115), 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 125 [2023-12-21 11:22:29,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:22:30,015 INFO L225 Difference]: With dead ends: 132941 [2023-12-21 11:22:30,015 INFO L226 Difference]: Without dead ends: 73166 [2023-12-21 11:22:30,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-21 11:22:30,106 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 472 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 1255 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 11:22:30,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 803 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1255 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 11:22:30,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73166 states. [2023-12-21 11:22:32,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73166 to 59792. [2023-12-21 11:22:32,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59792 states, 54388 states have (on average 1.5459476355078325) internal successors, (84081), 54645 states have internal predecessors, (84081), 3605 states have call successors, (3605), 1542 states have call predecessors, (3605), 1798 states have return successors, (10422), 3860 states have call predecessors, (10422), 3605 states have call successors, (10422) [2023-12-21 11:22:32,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59792 states to 59792 states and 98108 transitions. [2023-12-21 11:22:32,658 INFO L78 Accepts]: Start accepts. Automaton has 59792 states and 98108 transitions. Word has length 125 [2023-12-21 11:22:32,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:22:32,658 INFO L495 AbstractCegarLoop]: Abstraction has 59792 states and 98108 transitions. [2023-12-21 11:22:32,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 4 states have internal predecessors, (115), 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 11:22:32,658 INFO L276 IsEmpty]: Start isEmpty. Operand 59792 states and 98108 transitions. [2023-12-21 11:22:32,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-21 11:22:32,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:22:32,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:22:32,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 11:22:32,703 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:22:32,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:22:32,704 INFO L85 PathProgramCache]: Analyzing trace with hash 42051197, now seen corresponding path program 1 times [2023-12-21 11:22:32,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:22:32,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643687686] [2023-12-21 11:22:32,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:22:32,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:22:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:32,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:22:32,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:32,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:22:32,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:32,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 11:22:32,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:32,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:22:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:32,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:22:32,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:32,818 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 11:22:32,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:22:32,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643687686] [2023-12-21 11:22:32,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643687686] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:22:32,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:22:32,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:22:32,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24449029] [2023-12-21 11:22:32,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:22:32,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:22:32,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:22:32,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:22:32,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:22:32,820 INFO L87 Difference]: Start difference. First operand 59792 states and 98108 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 4 states have internal predecessors, (115), 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 11:22:35,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:22:35,767 INFO L93 Difference]: Finished difference Result 143187 states and 234515 transitions. [2023-12-21 11:22:35,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 11:22:35,767 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 4 states have internal predecessors, (115), 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 125 [2023-12-21 11:22:35,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:22:36,052 INFO L225 Difference]: With dead ends: 143187 [2023-12-21 11:22:36,053 INFO L226 Difference]: Without dead ends: 83410 [2023-12-21 11:22:36,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:22:36,178 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 475 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 11:22:36,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 802 Invalid, 1285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 11:22:36,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83410 states. [2023-12-21 11:22:38,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83410 to 60306. [2023-12-21 11:22:38,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60306 states, 54902 states have (on average 1.5408363994025718) internal successors, (84595), 55159 states have internal predecessors, (84595), 3605 states have call successors, (3605), 1542 states have call predecessors, (3605), 1798 states have return successors, (10422), 3860 states have call predecessors, (10422), 3605 states have call successors, (10422) [2023-12-21 11:22:38,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60306 states to 60306 states and 98622 transitions. [2023-12-21 11:22:38,906 INFO L78 Accepts]: Start accepts. Automaton has 60306 states and 98622 transitions. Word has length 125 [2023-12-21 11:22:38,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:22:38,906 INFO L495 AbstractCegarLoop]: Abstraction has 60306 states and 98622 transitions. [2023-12-21 11:22:38,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 4 states have internal predecessors, (115), 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 11:22:38,906 INFO L276 IsEmpty]: Start isEmpty. Operand 60306 states and 98622 transitions. [2023-12-21 11:22:38,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-21 11:22:38,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:22:38,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:22:38,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 11:22:38,949 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:22:38,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:22:38,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1100451269, now seen corresponding path program 1 times [2023-12-21 11:22:38,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:22:38,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329942796] [2023-12-21 11:22:38,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:22:38,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:22:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:38,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:22:38,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:39,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:22:39,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:39,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 11:22:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:39,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:22:39,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:39,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:22:39,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:39,109 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 11:22:39,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:22:39,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329942796] [2023-12-21 11:22:39,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329942796] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:22:39,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:22:39,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:22:39,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485454761] [2023-12-21 11:22:39,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:22:39,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:22:39,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:22:39,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:22:39,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:22:39,112 INFO L87 Difference]: Start difference. First operand 60306 states and 98622 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 11:22:49,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:22:49,138 INFO L93 Difference]: Finished difference Result 344649 states and 575717 transitions. [2023-12-21 11:22:49,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 11:22:49,139 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 125 [2023-12-21 11:22:49,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:22:50,522 INFO L225 Difference]: With dead ends: 344649 [2023-12-21 11:22:50,522 INFO L226 Difference]: Without dead ends: 284358 [2023-12-21 11:22:50,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2023-12-21 11:22:50,708 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 2736 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 2410 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2750 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 2678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 2410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-21 11:22:50,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2750 Valid, 1249 Invalid, 2678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 2410 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-21 11:22:50,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284358 states. [2023-12-21 11:23:00,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284358 to 232173. [2023-12-21 11:23:00,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232173 states, 211601 states have (on average 1.536897273642374) internal successors, (325209), 212626 states have internal predecessors, (325209), 13379 states have call successors, (13379), 6168 states have call predecessors, (13379), 7192 states have return successors, (45673), 13634 states have call predecessors, (45673), 13379 states have call successors, (45673) [2023-12-21 11:23:01,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232173 states to 232173 states and 384261 transitions. [2023-12-21 11:23:01,669 INFO L78 Accepts]: Start accepts. Automaton has 232173 states and 384261 transitions. Word has length 125 [2023-12-21 11:23:01,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:01,670 INFO L495 AbstractCegarLoop]: Abstraction has 232173 states and 384261 transitions. [2023-12-21 11:23:01,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 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 11:23:01,670 INFO L276 IsEmpty]: Start isEmpty. Operand 232173 states and 384261 transitions. [2023-12-21 11:23:01,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-21 11:23:01,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:01,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:23:01,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 11:23:01,752 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:01,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:01,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1917363354, now seen corresponding path program 1 times [2023-12-21 11:23:01,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:01,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773511256] [2023-12-21 11:23:01,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:01,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:01,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:23:01,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:01,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 11:23:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:01,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 11:23:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:01,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:23:01,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:01,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:23:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:01,884 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 11:23:01,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:01,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773511256] [2023-12-21 11:23:01,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773511256] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:01,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:01,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:23:01,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867157176] [2023-12-21 11:23:01,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:01,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:23:01,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:01,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:23:01,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:23:01,886 INFO L87 Difference]: Start difference. First operand 232173 states and 384261 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 4 states have internal predecessors, (115), 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 11:23:12,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:12,175 INFO L93 Difference]: Finished difference Result 529508 states and 888379 transitions. [2023-12-21 11:23:12,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 11:23:12,176 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 4 states have internal predecessors, (115), 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 125 [2023-12-21 11:23:12,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:13,493 INFO L225 Difference]: With dead ends: 529508 [2023-12-21 11:23:13,493 INFO L226 Difference]: Without dead ends: 297350 [2023-12-21 11:23:13,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:23:13,961 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 463 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 1268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:23:13,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 802 Invalid, 1268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time]