/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/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 13:10:26,191 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 13:10:26,278 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 13:10:26,282 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 13:10:26,282 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 13:10:26,308 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 13:10:26,309 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 13:10:26,309 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 13:10:26,310 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 13:10:26,310 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 13:10:26,310 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 13:10:26,310 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 13:10:26,311 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 13:10:26,311 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 13:10:26,311 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 13:10:26,312 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 13:10:26,312 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 13:10:26,312 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 13:10:26,312 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 13:10:26,313 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 13:10:26,313 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 13:10:26,318 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 13:10:26,318 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 13:10:26,319 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 13:10:26,319 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 13:10:26,319 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 13:10:26,320 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 13:10:26,320 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 13:10:26,320 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 13:10:26,321 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 13:10:26,321 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 13:10:26,321 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 13:10:26,322 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:10:26,322 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 13:10:26,322 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 13:10:26,323 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 13:10:26,323 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 13:10:26,323 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 13:10:26,324 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 13:10:26,324 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 13:10:26,324 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 13:10:26,325 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 13:10:26,325 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 13:10:26,325 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 13:10:26,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 13:10:26,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 13:10:26,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 13:10:26,623 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 13:10:26,624 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 13:10:26,625 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2023-12-21 13:10:27,806 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 13:10:28,139 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 13:10:28,139 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2023-12-21 13:10:28,159 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/320eb99be/9321cdd2f0b64bfab6325393584e644f/FLAG036c9916d [2023-12-21 13:10:28,173 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/320eb99be/9321cdd2f0b64bfab6325393584e644f [2023-12-21 13:10:28,175 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 13:10:28,176 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 13:10:28,179 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 13:10:28,179 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 13:10:28,183 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 13:10:28,184 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:10:28" (1/1) ... [2023-12-21 13:10:28,185 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb1dbf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:10:28, skipping insertion in model container [2023-12-21 13:10:28,185 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:10:28" (1/1) ... [2023-12-21 13:10:28,277 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 13:10:28,724 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c[30249,30262] [2023-12-21 13:10:28,777 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c[33700,33713] [2023-12-21 13:10:28,922 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:10:28,959 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 13:10:29,176 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c[30249,30262] [2023-12-21 13:10:29,205 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c[33700,33713] [2023-12-21 13:10:29,321 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:10:29,338 INFO L206 MainTranslator]: Completed translation [2023-12-21 13:10:29,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:10:29 WrapperNode [2023-12-21 13:10:29,338 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 13:10:29,339 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 13:10:29,339 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 13:10:29,339 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 13:10:29,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:10:29" (1/1) ... [2023-12-21 13:10:29,369 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:10:29" (1/1) ... [2023-12-21 13:10:29,428 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3887 [2023-12-21 13:10:29,428 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 13:10:29,429 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 13:10:29,429 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 13:10:29,429 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 13:10:29,448 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:10:29" (1/1) ... [2023-12-21 13:10:29,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:10:29" (1/1) ... [2023-12-21 13:10:29,456 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:10:29" (1/1) ... [2023-12-21 13:10:29,499 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 13:10:29,507 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:10:29" (1/1) ... [2023-12-21 13:10:29,507 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:10:29" (1/1) ... [2023-12-21 13:10:29,549 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:10:29" (1/1) ... [2023-12-21 13:10:29,575 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:10:29" (1/1) ... [2023-12-21 13:10:29,602 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:10:29" (1/1) ... [2023-12-21 13:10:29,619 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:10:29" (1/1) ... [2023-12-21 13:10:29,634 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 13:10:29,636 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 13:10:29,636 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 13:10:29,636 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 13:10:29,637 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:10:29" (1/1) ... [2023-12-21 13:10:29,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:10:29,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:10:29,669 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 13:10:29,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 13:10:29,716 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 13:10:29,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 13:10:29,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 13:10:29,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 13:10:29,843 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 13:10:29,845 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 13:10:31,449 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 13:10:31,488 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 13:10:31,488 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 13:10:31,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:10:31 BoogieIcfgContainer [2023-12-21 13:10:31,489 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 13:10:31,491 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 13:10:31,491 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 13:10:31,493 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 13:10:31,493 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:10:28" (1/3) ... [2023-12-21 13:10:31,493 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31af300d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:10:31, skipping insertion in model container [2023-12-21 13:10:31,493 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:10:29" (2/3) ... [2023-12-21 13:10:31,494 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31af300d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:10:31, skipping insertion in model container [2023-12-21 13:10:31,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:10:31" (3/3) ... [2023-12-21 13:10:31,494 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2023-12-21 13:10:31,506 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 13:10:31,506 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-21 13:10:31,548 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 13:10:31,552 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;@6f7f7b8a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 13:10:31,553 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-21 13:10:31,559 INFO L276 IsEmpty]: Start isEmpty. Operand has 1071 states, 1068 states have (on average 1.750936329588015) internal successors, (1870), 1070 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:31,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 13:10:31,574 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:10:31,575 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, 1, 1, 1, 1, 1, 1, 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 13:10:31,575 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:10:31,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:10:31,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1232911260, now seen corresponding path program 1 times [2023-12-21 13:10:31,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:10:31,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709024139] [2023-12-21 13:10:31,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:10:31,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:10:31,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:10:32,118 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 13:10:32,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:10:32,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709024139] [2023-12-21 13:10:32,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709024139] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:10:32,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:10:32,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:10:32,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683066099] [2023-12-21 13:10:32,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:10:32,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:10:32,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:10:32,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:10:32,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:10:32,148 INFO L87 Difference]: Start difference. First operand has 1071 states, 1068 states have (on average 1.750936329588015) internal successors, (1870), 1070 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:32,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:10:32,315 INFO L93 Difference]: Finished difference Result 1957 states and 3393 transitions. [2023-12-21 13:10:32,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:10:32,317 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2023-12-21 13:10:32,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:10:32,329 INFO L225 Difference]: With dead ends: 1957 [2023-12-21 13:10:32,330 INFO L226 Difference]: Without dead ends: 1069 [2023-12-21 13:10:32,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:10:32,336 INFO L413 NwaCegarLoop]: 1861 mSDtfsCounter, 217 mSDsluCounter, 3449 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 5310 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:10:32,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 5310 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:10:32,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2023-12-21 13:10:32,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1069. [2023-12-21 13:10:32,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 1067 states have (on average 1.6982193064667293) internal successors, (1812), 1068 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:32,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1812 transitions. [2023-12-21 13:10:32,397 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1812 transitions. Word has length 155 [2023-12-21 13:10:32,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:10:32,397 INFO L495 AbstractCegarLoop]: Abstraction has 1069 states and 1812 transitions. [2023-12-21 13:10:32,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:32,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1812 transitions. [2023-12-21 13:10:32,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-21 13:10:32,403 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:10:32,403 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:10:32,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 13:10:32,404 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:10:32,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:10:32,404 INFO L85 PathProgramCache]: Analyzing trace with hash 2093022531, now seen corresponding path program 1 times [2023-12-21 13:10:32,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:10:32,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188866865] [2023-12-21 13:10:32,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:10:32,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:10:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:10:32,554 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 13:10:32,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:10:32,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188866865] [2023-12-21 13:10:32,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188866865] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:10:32,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:10:32,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:10:32,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513736084] [2023-12-21 13:10:32,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:10:32,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:10:32,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:10:32,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:10:32,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:10:32,558 INFO L87 Difference]: Start difference. First operand 1069 states and 1812 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:32,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:10:32,710 INFO L93 Difference]: Finished difference Result 2706 states and 4595 transitions. [2023-12-21 13:10:32,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:10:32,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2023-12-21 13:10:32,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:10:32,716 INFO L225 Difference]: With dead ends: 2706 [2023-12-21 13:10:32,716 INFO L226 Difference]: Without dead ends: 1853 [2023-12-21 13:10:32,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:10:32,719 INFO L413 NwaCegarLoop]: 2878 mSDtfsCounter, 1312 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 4537 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:10:32,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1312 Valid, 4537 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:10:32,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1853 states. [2023-12-21 13:10:32,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1853 to 1849. [2023-12-21 13:10:32,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1849 states, 1847 states have (on average 1.678938819707634) internal successors, (3101), 1848 states have internal predecessors, (3101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:32,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 3101 transitions. [2023-12-21 13:10:32,748 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 3101 transitions. Word has length 196 [2023-12-21 13:10:32,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:10:32,748 INFO L495 AbstractCegarLoop]: Abstraction has 1849 states and 3101 transitions. [2023-12-21 13:10:32,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:32,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 3101 transitions. [2023-12-21 13:10:32,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-21 13:10:32,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:10:32,752 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:10:32,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 13:10:32,752 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:10:32,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:10:32,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1722320824, now seen corresponding path program 1 times [2023-12-21 13:10:32,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:10:32,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016297425] [2023-12-21 13:10:32,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:10:32,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:10:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:10:32,887 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 13:10:32,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:10:32,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016297425] [2023-12-21 13:10:32,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016297425] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:10:32,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:10:32,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:10:32,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789266859] [2023-12-21 13:10:32,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:10:32,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:10:32,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:10:32,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:10:32,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:10:32,890 INFO L87 Difference]: Start difference. First operand 1849 states and 3101 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:32,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:10:32,951 INFO L93 Difference]: Finished difference Result 3083 states and 5212 transitions. [2023-12-21 13:10:32,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:10:32,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2023-12-21 13:10:32,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:10:32,958 INFO L225 Difference]: With dead ends: 3083 [2023-12-21 13:10:32,958 INFO L226 Difference]: Without dead ends: 2222 [2023-12-21 13:10:32,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:10:32,960 INFO L413 NwaCegarLoop]: 2625 mSDtfsCounter, 1194 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1194 SdHoareTripleChecker+Valid, 4187 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:10:32,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1194 Valid, 4187 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:10:32,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2023-12-21 13:10:32,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 2218. [2023-12-21 13:10:32,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2218 states, 2216 states have (on average 1.6836642599277978) internal successors, (3731), 2217 states have internal predecessors, (3731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:32,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2218 states to 2218 states and 3731 transitions. [2023-12-21 13:10:32,991 INFO L78 Accepts]: Start accepts. Automaton has 2218 states and 3731 transitions. Word has length 199 [2023-12-21 13:10:32,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:10:32,991 INFO L495 AbstractCegarLoop]: Abstraction has 2218 states and 3731 transitions. [2023-12-21 13:10:32,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:32,992 INFO L276 IsEmpty]: Start isEmpty. Operand 2218 states and 3731 transitions. [2023-12-21 13:10:32,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-21 13:10:32,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:10:32,996 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:10:32,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 13:10:32,997 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:10:32,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:10:32,997 INFO L85 PathProgramCache]: Analyzing trace with hash 2120487589, now seen corresponding path program 1 times [2023-12-21 13:10:32,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:10:32,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181098188] [2023-12-21 13:10:32,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:10:32,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:10:33,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:10:33,121 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 13:10:33,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:10:33,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181098188] [2023-12-21 13:10:33,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181098188] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:10:33,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:10:33,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:10:33,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989746004] [2023-12-21 13:10:33,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:10:33,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:10:33,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:10:33,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:10:33,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:10:33,124 INFO L87 Difference]: Start difference. First operand 2218 states and 3731 transitions. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:33,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:10:33,206 INFO L93 Difference]: Finished difference Result 6032 states and 10139 transitions. [2023-12-21 13:10:33,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:10:33,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 202 [2023-12-21 13:10:33,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:10:33,218 INFO L225 Difference]: With dead ends: 6032 [2023-12-21 13:10:33,219 INFO L226 Difference]: Without dead ends: 4048 [2023-12-21 13:10:33,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:10:33,222 INFO L413 NwaCegarLoop]: 3061 mSDtfsCounter, 1334 mSDsluCounter, 1661 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1334 SdHoareTripleChecker+Valid, 4722 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:10:33,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1334 Valid, 4722 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:10:33,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4048 states. [2023-12-21 13:10:33,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4048 to 4044. [2023-12-21 13:10:33,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4044 states, 4042 states have (on average 1.6749134092033646) internal successors, (6770), 4043 states have internal predecessors, (6770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:33,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4044 states to 4044 states and 6770 transitions. [2023-12-21 13:10:33,287 INFO L78 Accepts]: Start accepts. Automaton has 4044 states and 6770 transitions. Word has length 202 [2023-12-21 13:10:33,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:10:33,288 INFO L495 AbstractCegarLoop]: Abstraction has 4044 states and 6770 transitions. [2023-12-21 13:10:33,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:33,288 INFO L276 IsEmpty]: Start isEmpty. Operand 4044 states and 6770 transitions. [2023-12-21 13:10:33,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-12-21 13:10:33,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:10:33,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:10:33,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 13:10:33,294 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:10:33,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:10:33,294 INFO L85 PathProgramCache]: Analyzing trace with hash 494759280, now seen corresponding path program 1 times [2023-12-21 13:10:33,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:10:33,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630060026] [2023-12-21 13:10:33,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:10:33,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:10:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:10:33,385 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 13:10:33,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:10:33,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630060026] [2023-12-21 13:10:33,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630060026] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:10:33,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:10:33,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:10:33,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918717272] [2023-12-21 13:10:33,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:10:33,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:10:33,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:10:33,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:10:33,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:10:33,388 INFO L87 Difference]: Start difference. First operand 4044 states and 6770 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:33,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:10:33,464 INFO L93 Difference]: Finished difference Result 7150 states and 12023 transitions. [2023-12-21 13:10:33,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:10:33,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 205 [2023-12-21 13:10:33,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:10:33,479 INFO L225 Difference]: With dead ends: 7150 [2023-12-21 13:10:33,479 INFO L226 Difference]: Without dead ends: 5158 [2023-12-21 13:10:33,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:10:33,484 INFO L413 NwaCegarLoop]: 2559 mSDtfsCounter, 1169 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 4083 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:10:33,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1169 Valid, 4083 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:10:33,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5158 states. [2023-12-21 13:10:33,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5158 to 5154. [2023-12-21 13:10:33,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5154 states, 5152 states have (on average 1.6770186335403727) internal successors, (8640), 5153 states have internal predecessors, (8640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:33,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5154 states to 5154 states and 8640 transitions. [2023-12-21 13:10:33,578 INFO L78 Accepts]: Start accepts. Automaton has 5154 states and 8640 transitions. Word has length 205 [2023-12-21 13:10:33,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:10:33,579 INFO L495 AbstractCegarLoop]: Abstraction has 5154 states and 8640 transitions. [2023-12-21 13:10:33,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:33,579 INFO L276 IsEmpty]: Start isEmpty. Operand 5154 states and 8640 transitions. [2023-12-21 13:10:33,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-21 13:10:33,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:10:33,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:10:33,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 13:10:33,587 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:10:33,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:10:33,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1123159105, now seen corresponding path program 1 times [2023-12-21 13:10:33,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:10:33,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920408983] [2023-12-21 13:10:33,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:10:33,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:10:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:10:33,752 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 13:10:33,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:10:33,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920408983] [2023-12-21 13:10:33,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920408983] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:10:33,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:10:33,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:10:33,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268181151] [2023-12-21 13:10:33,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:10:33,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:10:33,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:10:33,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:10:33,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:10:33,755 INFO L87 Difference]: Start difference. First operand 5154 states and 8640 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:33,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:10:33,877 INFO L93 Difference]: Finished difference Result 14516 states and 24268 transitions. [2023-12-21 13:10:33,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:10:33,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2023-12-21 13:10:33,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:10:33,909 INFO L225 Difference]: With dead ends: 14516 [2023-12-21 13:10:33,910 INFO L226 Difference]: Without dead ends: 9614 [2023-12-21 13:10:33,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:10:33,921 INFO L413 NwaCegarLoop]: 2994 mSDtfsCounter, 1308 mSDsluCounter, 1615 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 4609 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:10:33,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1308 Valid, 4609 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:10:33,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9614 states. [2023-12-21 13:10:34,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9614 to 9610. [2023-12-21 13:10:34,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9610 states, 9608 states have (on average 1.6637177352206494) internal successors, (15985), 9609 states have internal predecessors, (15985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:34,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9610 states to 9610 states and 15985 transitions. [2023-12-21 13:10:34,104 INFO L78 Accepts]: Start accepts. Automaton has 9610 states and 15985 transitions. Word has length 208 [2023-12-21 13:10:34,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:10:34,104 INFO L495 AbstractCegarLoop]: Abstraction has 9610 states and 15985 transitions. [2023-12-21 13:10:34,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:34,105 INFO L276 IsEmpty]: Start isEmpty. Operand 9610 states and 15985 transitions. [2023-12-21 13:10:34,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-21 13:10:34,117 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:10:34,117 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:10:34,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 13:10:34,117 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:10:34,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:10:34,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1335650768, now seen corresponding path program 1 times [2023-12-21 13:10:34,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:10:34,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297863944] [2023-12-21 13:10:34,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:10:34,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:10:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:10:34,202 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 13:10:34,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:10:34,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297863944] [2023-12-21 13:10:34,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297863944] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:10:34,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:10:34,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:10:34,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514934909] [2023-12-21 13:10:34,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:10:34,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:10:34,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:10:34,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:10:34,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:10:34,204 INFO L87 Difference]: Start difference. First operand 9610 states and 15985 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:34,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:10:34,370 INFO L93 Difference]: Finished difference Result 17410 states and 29088 transitions. [2023-12-21 13:10:34,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:10:34,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 211 [2023-12-21 13:10:34,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:10:34,396 INFO L225 Difference]: With dead ends: 17410 [2023-12-21 13:10:34,396 INFO L226 Difference]: Without dead ends: 12500 [2023-12-21 13:10:34,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:10:34,406 INFO L413 NwaCegarLoop]: 2662 mSDtfsCounter, 1143 mSDsluCounter, 1478 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 4140 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:10:34,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1143 Valid, 4140 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:10:34,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12500 states. [2023-12-21 13:10:34,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12500 to 12496. [2023-12-21 13:10:34,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12496 states, 12494 states have (on average 1.6642388346406276) internal successors, (20793), 12495 states have internal predecessors, (20793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:34,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12496 states to 12496 states and 20793 transitions. [2023-12-21 13:10:34,706 INFO L78 Accepts]: Start accepts. Automaton has 12496 states and 20793 transitions. Word has length 211 [2023-12-21 13:10:34,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:10:34,706 INFO L495 AbstractCegarLoop]: Abstraction has 12496 states and 20793 transitions. [2023-12-21 13:10:34,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:34,707 INFO L276 IsEmpty]: Start isEmpty. Operand 12496 states and 20793 transitions. [2023-12-21 13:10:34,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-12-21 13:10:34,722 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:10:34,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:10:34,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 13:10:34,723 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:10:34,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:10:34,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1119919267, now seen corresponding path program 1 times [2023-12-21 13:10:34,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:10:34,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722758816] [2023-12-21 13:10:34,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:10:34,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:10:34,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:10:34,866 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 13:10:34,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:10:34,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722758816] [2023-12-21 13:10:34,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722758816] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:10:34,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:10:34,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:10:34,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335602641] [2023-12-21 13:10:34,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:10:34,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:10:34,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:10:34,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:10:34,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:10:34,868 INFO L87 Difference]: Start difference. First operand 12496 states and 20793 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:35,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:10:35,057 INFO L93 Difference]: Finished difference Result 35660 states and 59075 transitions. [2023-12-21 13:10:35,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:10:35,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 214 [2023-12-21 13:10:35,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:10:35,098 INFO L225 Difference]: With dead ends: 35660 [2023-12-21 13:10:35,098 INFO L226 Difference]: Without dead ends: 23434 [2023-12-21 13:10:35,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:10:35,120 INFO L413 NwaCegarLoop]: 2743 mSDtfsCounter, 1282 mSDsluCounter, 1569 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1282 SdHoareTripleChecker+Valid, 4312 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:10:35,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1282 Valid, 4312 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:10:35,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23434 states. [2023-12-21 13:10:35,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23434 to 23430. [2023-12-21 13:10:35,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23430 states, 23428 states have (on average 1.6464060099026805) internal successors, (38572), 23429 states have internal predecessors, (38572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:35,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23430 states to 23430 states and 38572 transitions. [2023-12-21 13:10:35,781 INFO L78 Accepts]: Start accepts. Automaton has 23430 states and 38572 transitions. Word has length 214 [2023-12-21 13:10:35,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:10:35,782 INFO L495 AbstractCegarLoop]: Abstraction has 23430 states and 38572 transitions. [2023-12-21 13:10:35,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:35,782 INFO L276 IsEmpty]: Start isEmpty. Operand 23430 states and 38572 transitions. [2023-12-21 13:10:35,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-21 13:10:35,811 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:10:35,811 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:10:35,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 13:10:35,812 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:10:35,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:10:35,812 INFO L85 PathProgramCache]: Analyzing trace with hash 964333620, now seen corresponding path program 1 times [2023-12-21 13:10:35,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:10:35,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798022037] [2023-12-21 13:10:35,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:10:35,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:10:35,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:10:35,948 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 13:10:35,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:10:35,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798022037] [2023-12-21 13:10:35,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798022037] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:10:35,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:10:35,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:10:35,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587625446] [2023-12-21 13:10:35,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:10:35,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:10:35,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:10:35,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:10:35,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:10:35,951 INFO L87 Difference]: Start difference. First operand 23430 states and 38572 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:36,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:10:36,260 INFO L93 Difference]: Finished difference Result 42592 states and 70421 transitions. [2023-12-21 13:10:36,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:10:36,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 217 [2023-12-21 13:10:36,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:10:36,317 INFO L225 Difference]: With dead ends: 42592 [2023-12-21 13:10:36,318 INFO L226 Difference]: Without dead ends: 30358 [2023-12-21 13:10:36,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:10:36,339 INFO L413 NwaCegarLoop]: 2427 mSDtfsCounter, 1119 mSDsluCounter, 1432 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 3859 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:10:36,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1119 Valid, 3859 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:10:36,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30358 states. [2023-12-21 13:10:36,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30358 to 30354. [2023-12-21 13:10:36,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30354 states, 30352 states have (on average 1.6443726937269372) internal successors, (49910), 30353 states have internal predecessors, (49910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:37,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30354 states to 30354 states and 49910 transitions. [2023-12-21 13:10:37,038 INFO L78 Accepts]: Start accepts. Automaton has 30354 states and 49910 transitions. Word has length 217 [2023-12-21 13:10:37,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:10:37,039 INFO L495 AbstractCegarLoop]: Abstraction has 30354 states and 49910 transitions. [2023-12-21 13:10:37,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:37,039 INFO L276 IsEmpty]: Start isEmpty. Operand 30354 states and 49910 transitions. [2023-12-21 13:10:37,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-12-21 13:10:37,071 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:10:37,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:10:37,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 13:10:37,072 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:10:37,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:10:37,072 INFO L85 PathProgramCache]: Analyzing trace with hash 941035195, now seen corresponding path program 1 times [2023-12-21 13:10:37,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:10:37,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145654530] [2023-12-21 13:10:37,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:10:37,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:10:37,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:10:37,375 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 13:10:37,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:10:37,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145654530] [2023-12-21 13:10:37,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145654530] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:10:37,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:10:37,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:10:37,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691798504] [2023-12-21 13:10:37,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:10:37,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:10:37,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:10:37,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:10:37,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:10:37,377 INFO L87 Difference]: Start difference. First operand 30354 states and 49910 transitions. Second operand has 6 states, 6 states have (on average 36.666666666666664) internal successors, (220), 6 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:39,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:10:39,134 INFO L93 Difference]: Finished difference Result 191669 states and 317323 transitions. [2023-12-21 13:10:39,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 13:10:39,135 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 36.666666666666664) internal successors, (220), 6 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 220 [2023-12-21 13:10:39,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:10:39,512 INFO L225 Difference]: With dead ends: 191669 [2023-12-21 13:10:39,512 INFO L226 Difference]: Without dead ends: 161589 [2023-12-21 13:10:39,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-21 13:10:39,586 INFO L413 NwaCegarLoop]: 3543 mSDtfsCounter, 10693 mSDsluCounter, 14018 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10693 SdHoareTripleChecker+Valid, 17561 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:10:39,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10693 Valid, 17561 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1069 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 13:10:39,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161589 states. [2023-12-21 13:10:41,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161589 to 59293. [2023-12-21 13:10:41,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59293 states, 59291 states have (on average 1.6369938101904167) internal successors, (97059), 59292 states have internal predecessors, (97059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:41,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59293 states to 59293 states and 97059 transitions. [2023-12-21 13:10:41,587 INFO L78 Accepts]: Start accepts. Automaton has 59293 states and 97059 transitions. Word has length 220 [2023-12-21 13:10:41,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:10:41,588 INFO L495 AbstractCegarLoop]: Abstraction has 59293 states and 97059 transitions. [2023-12-21 13:10:41,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.666666666666664) internal successors, (220), 6 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:41,588 INFO L276 IsEmpty]: Start isEmpty. Operand 59293 states and 97059 transitions. [2023-12-21 13:10:41,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-21 13:10:41,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:10:41,642 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:10:41,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 13:10:41,643 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:10:41,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:10:41,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1472821796, now seen corresponding path program 1 times [2023-12-21 13:10:41,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:10:41,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997072187] [2023-12-21 13:10:41,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:10:41,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:10:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:10:42,035 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 13:10:42,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:10:42,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997072187] [2023-12-21 13:10:42,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997072187] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:10:42,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:10:42,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:10:42,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807999981] [2023-12-21 13:10:42,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:10:42,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:10:42,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:10:42,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:10:42,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:10:42,038 INFO L87 Difference]: Start difference. First operand 59293 states and 97059 transitions. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:42,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:10:42,905 INFO L93 Difference]: Finished difference Result 193969 states and 319317 transitions. [2023-12-21 13:10:42,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 13:10:42,907 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2023-12-21 13:10:42,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:10:43,121 INFO L225 Difference]: With dead ends: 193969 [2023-12-21 13:10:43,122 INFO L226 Difference]: Without dead ends: 134950 [2023-12-21 13:10:43,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:10:43,190 INFO L413 NwaCegarLoop]: 2704 mSDtfsCounter, 3998 mSDsluCounter, 3896 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3998 SdHoareTripleChecker+Valid, 6600 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:10:43,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3998 Valid, 6600 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:10:43,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134950 states. [2023-12-21 13:10:44,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134950 to 97572. [2023-12-21 13:10:44,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97572 states, 97570 states have (on average 1.6370298247412114) internal successors, (159725), 97571 states have internal predecessors, (159725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:45,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97572 states to 97572 states and 159725 transitions. [2023-12-21 13:10:45,064 INFO L78 Accepts]: Start accepts. Automaton has 97572 states and 159725 transitions. Word has length 222 [2023-12-21 13:10:45,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:10:45,096 INFO L495 AbstractCegarLoop]: Abstraction has 97572 states and 159725 transitions. [2023-12-21 13:10:45,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:45,097 INFO L276 IsEmpty]: Start isEmpty. Operand 97572 states and 159725 transitions. [2023-12-21 13:10:45,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-12-21 13:10:45,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:10:45,236 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:10:45,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 13:10:45,237 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:10:45,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:10:45,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1158480467, now seen corresponding path program 1 times [2023-12-21 13:10:45,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:10:45,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607098921] [2023-12-21 13:10:45,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:10:45,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:10:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:10:45,367 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 13:10:45,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:10:45,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607098921] [2023-12-21 13:10:45,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607098921] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:10:45,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:10:45,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:10:45,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753421467] [2023-12-21 13:10:45,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:10:45,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:10:45,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:10:45,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:10:45,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:10:45,369 INFO L87 Difference]: Start difference. First operand 97572 states and 159725 transitions. Second operand has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:46,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:10:46,752 INFO L93 Difference]: Finished difference Result 315699 states and 517730 transitions. [2023-12-21 13:10:46,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 13:10:46,753 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 223 [2023-12-21 13:10:46,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:10:47,112 INFO L225 Difference]: With dead ends: 315699 [2023-12-21 13:10:47,113 INFO L226 Difference]: Without dead ends: 218401 [2023-12-21 13:10:47,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:10:47,191 INFO L413 NwaCegarLoop]: 1647 mSDtfsCounter, 3949 mSDsluCounter, 3809 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3949 SdHoareTripleChecker+Valid, 5456 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:10:47,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3949 Valid, 5456 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:10:47,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218401 states. [2023-12-21 13:10:49,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218401 to 158558. [2023-12-21 13:10:49,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158558 states, 158556 states have (on average 1.6305658568581447) internal successors, (258536), 158557 states have internal predecessors, (258536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:50,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158558 states to 158558 states and 258536 transitions. [2023-12-21 13:10:50,468 INFO L78 Accepts]: Start accepts. Automaton has 158558 states and 258536 transitions. Word has length 223 [2023-12-21 13:10:50,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:10:50,468 INFO L495 AbstractCegarLoop]: Abstraction has 158558 states and 258536 transitions. [2023-12-21 13:10:50,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:50,469 INFO L276 IsEmpty]: Start isEmpty. Operand 158558 states and 258536 transitions. [2023-12-21 13:10:50,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-12-21 13:10:50,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:10:50,587 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:10:50,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 13:10:50,587 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:10:50,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:10:50,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1073126653, now seen corresponding path program 1 times [2023-12-21 13:10:50,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:10:50,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736300480] [2023-12-21 13:10:50,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:10:50,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:10:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:10:50,714 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 13:10:50,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:10:50,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736300480] [2023-12-21 13:10:50,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736300480] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:10:50,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:10:50,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:10:50,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712953984] [2023-12-21 13:10:50,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:10:50,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:10:50,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:10:50,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:10:50,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:10:50,716 INFO L87 Difference]: Start difference. First operand 158558 states and 258536 transitions. Second operand has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:53,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:10:53,345 INFO L93 Difference]: Finished difference Result 509107 states and 831598 transitions. [2023-12-21 13:10:53,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 13:10:53,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 224 [2023-12-21 13:10:53,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:10:53,963 INFO L225 Difference]: With dead ends: 509107 [2023-12-21 13:10:53,963 INFO L226 Difference]: Without dead ends: 350823 [2023-12-21 13:10:54,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:10:54,121 INFO L413 NwaCegarLoop]: 1646 mSDtfsCounter, 3900 mSDsluCounter, 3721 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3900 SdHoareTripleChecker+Valid, 5367 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:10:54,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3900 Valid, 5367 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:10:54,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350823 states. [2023-12-21 13:10:58,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350823 to 255208. [2023-12-21 13:10:58,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255208 states, 255206 states have (on average 1.6239195003252274) internal successors, (414434), 255207 states have internal predecessors, (414434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:59,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255208 states to 255208 states and 414434 transitions. [2023-12-21 13:10:59,271 INFO L78 Accepts]: Start accepts. Automaton has 255208 states and 414434 transitions. Word has length 224 [2023-12-21 13:10:59,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:10:59,271 INFO L495 AbstractCegarLoop]: Abstraction has 255208 states and 414434 transitions. [2023-12-21 13:10:59,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:10:59,271 INFO L276 IsEmpty]: Start isEmpty. Operand 255208 states and 414434 transitions. [2023-12-21 13:10:59,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-12-21 13:10:59,814 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:10:59,814 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:10:59,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 13:10:59,815 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:10:59,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:10:59,815 INFO L85 PathProgramCache]: Analyzing trace with hash 503548788, now seen corresponding path program 1 times [2023-12-21 13:10:59,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:10:59,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635379810] [2023-12-21 13:10:59,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:10:59,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:10:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:10:59,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:10:59,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:10:59,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635379810] [2023-12-21 13:10:59,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635379810] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:10:59,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:10:59,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:10:59,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880812547] [2023-12-21 13:10:59,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:10:59,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:10:59,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:10:59,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:10:59,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:10:59,953 INFO L87 Difference]: Start difference. First operand 255208 states and 414434 transitions. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:11:03,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:11:03,377 INFO L93 Difference]: Finished difference Result 808262 states and 1314800 transitions. [2023-12-21 13:11:03,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 13:11:03,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 225 [2023-12-21 13:11:03,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:11:04,484 INFO L225 Difference]: With dead ends: 808262 [2023-12-21 13:11:04,484 INFO L226 Difference]: Without dead ends: 553328 [2023-12-21 13:11:04,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:11:04,959 INFO L413 NwaCegarLoop]: 1664 mSDtfsCounter, 3851 mSDsluCounter, 3648 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3851 SdHoareTripleChecker+Valid, 5312 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:11:04,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3851 Valid, 5312 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:11:05,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553328 states. [2023-12-21 13:11:12,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553328 to 404056. [2023-12-21 13:11:13,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404056 states, 404054 states have (on average 1.6170511862275834) internal successors, (653376), 404055 states have internal predecessors, (653376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:11:14,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404056 states to 404056 states and 653376 transitions. [2023-12-21 13:11:14,772 INFO L78 Accepts]: Start accepts. Automaton has 404056 states and 653376 transitions. Word has length 225 [2023-12-21 13:11:14,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:11:14,772 INFO L495 AbstractCegarLoop]: Abstraction has 404056 states and 653376 transitions. [2023-12-21 13:11:14,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:11:14,772 INFO L276 IsEmpty]: Start isEmpty. Operand 404056 states and 653376 transitions. [2023-12-21 13:11:15,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2023-12-21 13:11:15,630 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:11:15,630 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:11:15,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 13:11:15,631 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:11:15,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:11:15,631 INFO L85 PathProgramCache]: Analyzing trace with hash -2078461689, now seen corresponding path program 1 times [2023-12-21 13:11:15,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:11:15,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395965661] [2023-12-21 13:11:15,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:11:15,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:11:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:11:16,215 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 13:11:16,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:11:16,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395965661] [2023-12-21 13:11:16,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395965661] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:11:16,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:11:16,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:11:16,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137918338] [2023-12-21 13:11:16,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:11:16,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:11:16,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:11:16,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:11:16,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:11:16,217 INFO L87 Difference]: Start difference. First operand 404056 states and 653376 transitions. Second operand has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 6 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:11:20,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:11:20,322 INFO L93 Difference]: Finished difference Result 807842 states and 1306322 transitions. [2023-12-21 13:11:20,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:11:20,322 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 6 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 227 [2023-12-21 13:11:20,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:11:21,419 INFO L225 Difference]: With dead ends: 807842 [2023-12-21 13:11:21,420 INFO L226 Difference]: Without dead ends: 404060 [2023-12-21 13:11:21,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:11:21,590 INFO L413 NwaCegarLoop]: 2705 mSDtfsCounter, 1333 mSDsluCounter, 5708 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1333 SdHoareTripleChecker+Valid, 8413 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:11:21,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1333 Valid, 8413 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 13:11:21,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404060 states. [2023-12-21 13:11:26,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404060 to 404056. [2023-12-21 13:11:27,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404056 states, 404054 states have (on average 1.6091141283095824) internal successors, (650169), 404055 states have internal predecessors, (650169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:11:28,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404056 states to 404056 states and 650169 transitions. [2023-12-21 13:11:28,548 INFO L78 Accepts]: Start accepts. Automaton has 404056 states and 650169 transitions. Word has length 227 [2023-12-21 13:11:28,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:11:28,548 INFO L495 AbstractCegarLoop]: Abstraction has 404056 states and 650169 transitions. [2023-12-21 13:11:28,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 6 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:11:28,549 INFO L276 IsEmpty]: Start isEmpty. Operand 404056 states and 650169 transitions. [2023-12-21 13:11:28,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-12-21 13:11:28,953 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:11:28,954 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:11:28,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 13:11:28,954 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:11:28,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:11:28,955 INFO L85 PathProgramCache]: Analyzing trace with hash 7989879, now seen corresponding path program 1 times [2023-12-21 13:11:28,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:11:28,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920378945] [2023-12-21 13:11:28,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:11:28,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:11:29,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:11:29,351 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 13:11:29,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:11:29,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920378945] [2023-12-21 13:11:29,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920378945] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:11:29,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:11:29,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:11:29,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006953241] [2023-12-21 13:11:29,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:11:29,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:11:29,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:11:29,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:11:29,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:11:29,356 INFO L87 Difference]: Start difference. First operand 404056 states and 650169 transitions. Second operand has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:11:34,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:11:34,783 INFO L93 Difference]: Finished difference Result 1144731 states and 1844986 transitions. [2023-12-21 13:11:34,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:11:34,784 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 230 [2023-12-21 13:11:34,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:11:36,870 INFO L225 Difference]: With dead ends: 1144731 [2023-12-21 13:11:36,870 INFO L226 Difference]: Without dead ends: 740949 [2023-12-21 13:11:37,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:11:37,162 INFO L413 NwaCegarLoop]: 1651 mSDtfsCounter, 4014 mSDsluCounter, 4329 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4014 SdHoareTripleChecker+Valid, 5980 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:11:37,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4014 Valid, 5980 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:11:37,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740949 states. [2023-12-21 13:11:49,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740949 to 740945. [2023-12-21 13:11:49,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740945 states, 740943 states have (on average 1.5992228821920174) internal successors, (1184933), 740944 states have internal predecessors, (1184933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:11:52,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740945 states to 740945 states and 1184933 transitions. [2023-12-21 13:11:52,932 INFO L78 Accepts]: Start accepts. Automaton has 740945 states and 1184933 transitions. Word has length 230 [2023-12-21 13:11:52,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:11:52,933 INFO L495 AbstractCegarLoop]: Abstraction has 740945 states and 1184933 transitions. [2023-12-21 13:11:52,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:11:52,933 INFO L276 IsEmpty]: Start isEmpty. Operand 740945 states and 1184933 transitions. [2023-12-21 13:11:53,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-12-21 13:11:53,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:11:53,753 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:11:53,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 13:11:53,753 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:11:53,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:11:53,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1743560388, now seen corresponding path program 1 times [2023-12-21 13:11:53,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:11:53,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727931704] [2023-12-21 13:11:53,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:11:53,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:11:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:11:54,277 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 13:11:54,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:11:54,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727931704] [2023-12-21 13:11:54,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727931704] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:11:54,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:11:54,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:11:54,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548859647] [2023-12-21 13:11:54,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:11:54,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:11:54,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:11:54,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:11:54,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:11:54,279 INFO L87 Difference]: Start difference. First operand 740945 states and 1184933 transitions. Second operand has 6 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:12:03,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:12:03,461 INFO L93 Difference]: Finished difference Result 1964689 states and 3159365 transitions. [2023-12-21 13:12:03,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:12:03,462 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 231 [2023-12-21 13:12:03,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:12:08,463 INFO L225 Difference]: With dead ends: 1964689 [2023-12-21 13:12:08,464 INFO L226 Difference]: Without dead ends: 1661617 [2023-12-21 13:12:08,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:12:08,895 INFO L413 NwaCegarLoop]: 3813 mSDtfsCounter, 6480 mSDsluCounter, 6826 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6480 SdHoareTripleChecker+Valid, 10639 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:12:08,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6480 Valid, 10639 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:12:10,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661617 states. [2023-12-21 13:12:39,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661617 to 1174696. [2023-12-21 13:12:41,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174696 states, 1174694 states have (on average 1.5985831203700709) internal successors, (1877846), 1174695 states have internal predecessors, (1877846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:12:47,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174696 states to 1174696 states and 1877846 transitions. [2023-12-21 13:12:47,010 INFO L78 Accepts]: Start accepts. Automaton has 1174696 states and 1877846 transitions. Word has length 231 [2023-12-21 13:12:47,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:12:47,024 INFO L495 AbstractCegarLoop]: Abstraction has 1174696 states and 1877846 transitions. [2023-12-21 13:12:47,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:12:47,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1174696 states and 1877846 transitions. [2023-12-21 13:12:48,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-12-21 13:12:48,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:12:48,711 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:12:48,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 13:12:48,712 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:12:48,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:12:48,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1832525440, now seen corresponding path program 1 times [2023-12-21 13:12:48,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:12:48,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472292751] [2023-12-21 13:12:48,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:12:48,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:12:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:12:48,913 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 13:12:48,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:12:48,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472292751] [2023-12-21 13:12:48,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472292751] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:12:48,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:12:48,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:12:48,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371544760] [2023-12-21 13:12:48,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:12:48,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:12:48,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:12:48,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:12:48,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:12:48,915 INFO L87 Difference]: Start difference. First operand 1174696 states and 1877846 transitions. Second operand has 6 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)