/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/systemc/token_ring.06.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 23:07:09,847 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 23:07:09,901 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 23:07:09,904 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 23:07:09,905 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 23:07:09,931 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 23:07:09,931 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 23:07:09,931 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 23:07:09,933 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 23:07:09,934 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 23:07:09,934 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 23:07:09,934 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 23:07:09,934 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 23:07:09,935 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 23:07:09,935 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 23:07:09,935 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 23:07:09,935 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 23:07:09,936 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 23:07:09,936 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 23:07:09,938 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 23:07:09,940 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 23:07:09,940 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 23:07:09,940 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 23:07:09,941 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 23:07:09,941 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 23:07:09,941 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 23:07:09,941 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 23:07:09,941 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 23:07:09,942 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 23:07:09,942 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 23:07:09,942 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 23:07:09,942 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 23:07:09,942 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:07:09,942 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 23:07:09,943 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 23:07:09,943 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 23:07:09,943 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 23:07:09,943 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 23:07:09,943 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 23:07:09,943 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 23:07:09,944 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 23:07:09,945 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 23:07:09,945 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 23:07:09,945 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 23:07:10,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 23:07:10,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 23:07:10,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 23:07:10,159 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 23:07:10,159 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 23:07:10,160 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.06.cil-2.c [2023-12-15 23:07:11,083 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 23:07:11,251 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 23:07:11,251 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.06.cil-2.c [2023-12-15 23:07:11,259 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/726dfeeb4/1988fe5168e048dabcea2341fcd85f64/FLAG65d4048ae [2023-12-15 23:07:11,270 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/726dfeeb4/1988fe5168e048dabcea2341fcd85f64 [2023-12-15 23:07:11,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 23:07:11,273 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 23:07:11,274 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 23:07:11,274 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 23:07:11,277 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 23:07:11,278 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:07:11" (1/1) ... [2023-12-15 23:07:11,278 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a1b02a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:07:11, skipping insertion in model container [2023-12-15 23:07:11,278 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:07:11" (1/1) ... [2023-12-15 23:07:11,305 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 23:07:11,411 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.06.cil-2.c[671,684] [2023-12-15 23:07:11,468 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:07:11,479 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 23:07:11,491 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.06.cil-2.c[671,684] [2023-12-15 23:07:11,526 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:07:11,538 INFO L206 MainTranslator]: Completed translation [2023-12-15 23:07:11,539 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:07:11 WrapperNode [2023-12-15 23:07:11,539 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 23:07:11,540 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 23:07:11,540 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 23:07:11,540 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 23:07:11,544 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:07:11" (1/1) ... [2023-12-15 23:07:11,550 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:07:11" (1/1) ... [2023-12-15 23:07:11,597 INFO L138 Inliner]: procedures = 40, calls = 49, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 519 [2023-12-15 23:07:11,597 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 23:07:11,598 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 23:07:11,598 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 23:07:11,598 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 23:07:11,606 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:07:11" (1/1) ... [2023-12-15 23:07:11,606 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:07:11" (1/1) ... [2023-12-15 23:07:11,612 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:07:11" (1/1) ... [2023-12-15 23:07:11,629 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]. [2023-12-15 23:07:11,630 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:07:11" (1/1) ... [2023-12-15 23:07:11,630 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:07:11" (1/1) ... [2023-12-15 23:07:11,644 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:07:11" (1/1) ... [2023-12-15 23:07:11,649 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:07:11" (1/1) ... [2023-12-15 23:07:11,650 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:07:11" (1/1) ... [2023-12-15 23:07:11,651 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:07:11" (1/1) ... [2023-12-15 23:07:11,654 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 23:07:11,654 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 23:07:11,654 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 23:07:11,654 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 23:07:11,655 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:07:11" (1/1) ... [2023-12-15 23:07:11,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:07:11,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:07:11,675 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) [2023-12-15 23:07:11,698 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 [2023-12-15 23:07:11,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 23:07:11,703 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-15 23:07:11,703 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-15 23:07:11,703 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-15 23:07:11,703 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-15 23:07:11,703 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-15 23:07:11,704 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-15 23:07:11,705 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-15 23:07:11,705 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-15 23:07:11,705 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-15 23:07:11,705 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-15 23:07:11,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 23:07:11,705 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-15 23:07:11,705 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-15 23:07:11,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 23:07:11,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 23:07:11,775 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 23:07:11,776 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 23:07:12,101 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 23:07:12,133 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 23:07:12,133 INFO L309 CfgBuilder]: Removed 9 assume(true) statements. [2023-12-15 23:07:12,134 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:07:12 BoogieIcfgContainer [2023-12-15 23:07:12,134 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 23:07:12,135 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 23:07:12,135 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 23:07:12,137 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 23:07:12,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:07:11" (1/3) ... [2023-12-15 23:07:12,138 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3839dd59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:07:12, skipping insertion in model container [2023-12-15 23:07:12,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:07:11" (2/3) ... [2023-12-15 23:07:12,138 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3839dd59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:07:12, skipping insertion in model container [2023-12-15 23:07:12,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:07:12" (3/3) ... [2023-12-15 23:07:12,139 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.06.cil-2.c [2023-12-15 23:07:12,158 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 23:07:12,159 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 23:07:12,204 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 23:07:12,209 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;@7be06547, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 23:07:12,209 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 23:07:12,213 INFO L276 IsEmpty]: Start isEmpty. Operand has 210 states, 182 states have (on average 1.7087912087912087) internal successors, (311), 184 states have internal predecessors, (311), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-15 23:07:12,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-15 23:07:12,223 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:07:12,224 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] [2023-12-15 23:07:12,224 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:07:12,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:07:12,228 INFO L85 PathProgramCache]: Analyzing trace with hash -938107551, now seen corresponding path program 1 times [2023-12-15 23:07:12,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:07:12,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106471324] [2023-12-15 23:07:12,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:07:12,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:07:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:12,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:07:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:12,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 23:07:12,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:12,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:07:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:12,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 23:07:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:12,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-15 23:07:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:12,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:07:12,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:07:12,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106471324] [2023-12-15 23:07:12,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106471324] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:07:12,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:07:12,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:07:12,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421977687] [2023-12-15 23:07:12,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:07:12,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:07:12,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:07:12,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:07:12,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:07:12,641 INFO L87 Difference]: Start difference. First operand has 210 states, 182 states have (on average 1.7087912087912087) internal successors, (311), 184 states have internal predecessors, (311), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:13,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:07:13,407 INFO L93 Difference]: Finished difference Result 486 states and 821 transitions. [2023-12-15 23:07:13,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 23:07:13,409 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2023-12-15 23:07:13,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:07:13,422 INFO L225 Difference]: With dead ends: 486 [2023-12-15 23:07:13,422 INFO L226 Difference]: Without dead ends: 278 [2023-12-15 23:07:13,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:07:13,432 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 553 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 23:07:13,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 379 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 23:07:13,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-12-15 23:07:13,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 208. [2023-12-15 23:07:13,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 181 states have (on average 1.5966850828729282) internal successors, (289), 182 states have internal predecessors, (289), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-15 23:07:13,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 329 transitions. [2023-12-15 23:07:13,512 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 329 transitions. Word has length 100 [2023-12-15 23:07:13,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:07:13,513 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 329 transitions. [2023-12-15 23:07:13,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:13,513 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 329 transitions. [2023-12-15 23:07:13,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-15 23:07:13,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:07:13,519 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] [2023-12-15 23:07:13,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 23:07:13,520 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:07:13,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:07:13,520 INFO L85 PathProgramCache]: Analyzing trace with hash 2005474527, now seen corresponding path program 1 times [2023-12-15 23:07:13,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:07:13,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713815536] [2023-12-15 23:07:13,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:07:13,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:07:13,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:13,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:07:13,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:13,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 23:07:13,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:13,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:07:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:13,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 23:07:13,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:13,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-15 23:07:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:13,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:07:13,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:07:13,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713815536] [2023-12-15 23:07:13,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713815536] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:07:13,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:07:13,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 23:07:13,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768920254] [2023-12-15 23:07:13,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:07:13,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 23:07:13,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:07:13,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 23:07:13,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:07:13,787 INFO L87 Difference]: Start difference. First operand 208 states and 329 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:14,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:07:14,874 INFO L93 Difference]: Finished difference Result 747 states and 1211 transitions. [2023-12-15 23:07:14,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 23:07:14,874 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2023-12-15 23:07:14,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:07:14,877 INFO L225 Difference]: With dead ends: 747 [2023-12-15 23:07:14,877 INFO L226 Difference]: Without dead ends: 551 [2023-12-15 23:07:14,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-15 23:07:14,879 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 823 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 23:07:14,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 631 Invalid, 1364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1280 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 23:07:14,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2023-12-15 23:07:14,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 412. [2023-12-15 23:07:14,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 363 states have (on average 1.606060606060606) internal successors, (583), 365 states have internal predecessors, (583), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (38), 35 states have call predecessors, (38), 35 states have call successors, (38) [2023-12-15 23:07:14,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 656 transitions. [2023-12-15 23:07:14,900 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 656 transitions. Word has length 100 [2023-12-15 23:07:14,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:07:14,900 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 656 transitions. [2023-12-15 23:07:14,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:14,900 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 656 transitions. [2023-12-15 23:07:14,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-15 23:07:14,901 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:07:14,901 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] [2023-12-15 23:07:14,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 23:07:14,902 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:07:14,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:07:14,902 INFO L85 PathProgramCache]: Analyzing trace with hash 748499615, now seen corresponding path program 1 times [2023-12-15 23:07:14,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:07:14,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749091475] [2023-12-15 23:07:14,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:07:14,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:07:14,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:14,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:07:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:15,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 23:07:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:15,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:07:15,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:15,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 23:07:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:15,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-15 23:07:15,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:15,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:07:15,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:07:15,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749091475] [2023-12-15 23:07:15,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749091475] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:07:15,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:07:15,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:07:15,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900091218] [2023-12-15 23:07:15,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:07:15,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:07:15,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:07:15,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:07:15,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:07:15,103 INFO L87 Difference]: Start difference. First operand 412 states and 656 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:16,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:07:16,617 INFO L93 Difference]: Finished difference Result 1232 states and 1993 transitions. [2023-12-15 23:07:16,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 23:07:16,617 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2023-12-15 23:07:16,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:07:16,621 INFO L225 Difference]: With dead ends: 1232 [2023-12-15 23:07:16,621 INFO L226 Difference]: Without dead ends: 832 [2023-12-15 23:07:16,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 23:07:16,623 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 836 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 2089 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 2138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 2089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:07:16,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 1186 Invalid, 2138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 2089 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 23:07:16,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2023-12-15 23:07:16,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 601. [2023-12-15 23:07:16,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 530 states have (on average 1.5981132075471698) internal successors, (847), 533 states have internal predecessors, (847), 50 states have call successors, (50), 18 states have call predecessors, (50), 20 states have return successors, (55), 51 states have call predecessors, (55), 50 states have call successors, (55) [2023-12-15 23:07:16,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 952 transitions. [2023-12-15 23:07:16,650 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 952 transitions. Word has length 100 [2023-12-15 23:07:16,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:07:16,650 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 952 transitions. [2023-12-15 23:07:16,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:16,650 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 952 transitions. [2023-12-15 23:07:16,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-15 23:07:16,651 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:07:16,651 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] [2023-12-15 23:07:16,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 23:07:16,652 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:07:16,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:07:16,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1669984863, now seen corresponding path program 1 times [2023-12-15 23:07:16,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:07:16,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289464901] [2023-12-15 23:07:16,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:07:16,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:07:16,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:16,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:07:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:16,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 23:07:16,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:16,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:07:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:16,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 23:07:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:16,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-15 23:07:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:16,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:07:16,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:07:16,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289464901] [2023-12-15 23:07:16,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289464901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:07:16,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:07:16,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:07:16,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69425824] [2023-12-15 23:07:16,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:07:16,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:07:16,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:07:16,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:07:16,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:07:16,799 INFO L87 Difference]: Start difference. First operand 601 states and 952 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:18,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:07:18,225 INFO L93 Difference]: Finished difference Result 1942 states and 3133 transitions. [2023-12-15 23:07:18,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 23:07:18,225 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2023-12-15 23:07:18,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:07:18,231 INFO L225 Difference]: With dead ends: 1942 [2023-12-15 23:07:18,232 INFO L226 Difference]: Without dead ends: 1353 [2023-12-15 23:07:18,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 23:07:18,240 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 904 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 1726 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:07:18,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 784 Invalid, 1801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1726 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 23:07:18,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353 states. [2023-12-15 23:07:18,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353 to 980. [2023-12-15 23:07:18,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 865 states have (on average 1.5907514450867053) internal successors, (1376), 870 states have internal predecessors, (1376), 80 states have call successors, (80), 30 states have call predecessors, (80), 34 states have return successors, (93), 83 states have call predecessors, (93), 80 states have call successors, (93) [2023-12-15 23:07:18,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1549 transitions. [2023-12-15 23:07:18,295 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1549 transitions. Word has length 100 [2023-12-15 23:07:18,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:07:18,295 INFO L495 AbstractCegarLoop]: Abstraction has 980 states and 1549 transitions. [2023-12-15 23:07:18,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:18,296 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1549 transitions. [2023-12-15 23:07:18,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-15 23:07:18,297 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:07:18,297 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] [2023-12-15 23:07:18,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 23:07:18,297 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:07:18,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:07:18,297 INFO L85 PathProgramCache]: Analyzing trace with hash 745851487, now seen corresponding path program 1 times [2023-12-15 23:07:18,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:07:18,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175900283] [2023-12-15 23:07:18,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:07:18,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:07:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:18,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:07:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:18,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 23:07:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:18,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:07:18,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:18,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 23:07:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:18,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-15 23:07:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:18,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:07:18,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:07:18,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175900283] [2023-12-15 23:07:18,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175900283] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:07:18,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:07:18,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:07:18,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698068687] [2023-12-15 23:07:18,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:07:18,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:07:18,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:07:18,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:07:18,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:07:18,461 INFO L87 Difference]: Start difference. First operand 980 states and 1549 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:19,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:07:19,176 INFO L93 Difference]: Finished difference Result 2307 states and 3715 transitions. [2023-12-15 23:07:19,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 23:07:19,176 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2023-12-15 23:07:19,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:07:19,181 INFO L225 Difference]: With dead ends: 2307 [2023-12-15 23:07:19,181 INFO L226 Difference]: Without dead ends: 1339 [2023-12-15 23:07:19,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 23:07:19,183 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 700 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 23:07:19,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 505 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 23:07:19,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2023-12-15 23:07:19,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 980. [2023-12-15 23:07:19,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 865 states have (on average 1.584971098265896) internal successors, (1371), 870 states have internal predecessors, (1371), 80 states have call successors, (80), 30 states have call predecessors, (80), 34 states have return successors, (93), 83 states have call predecessors, (93), 80 states have call successors, (93) [2023-12-15 23:07:19,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1544 transitions. [2023-12-15 23:07:19,218 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1544 transitions. Word has length 100 [2023-12-15 23:07:19,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:07:19,218 INFO L495 AbstractCegarLoop]: Abstraction has 980 states and 1544 transitions. [2023-12-15 23:07:19,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:19,219 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1544 transitions. [2023-12-15 23:07:19,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-15 23:07:19,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:07:19,220 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] [2023-12-15 23:07:19,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 23:07:19,220 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:07:19,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:07:19,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1982357859, now seen corresponding path program 1 times [2023-12-15 23:07:19,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:07:19,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183353722] [2023-12-15 23:07:19,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:07:19,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:07:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:19,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:07:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:19,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 23:07:19,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:19,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:07:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:19,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 23:07:19,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:19,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-15 23:07:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:19,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:07:19,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:07:19,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183353722] [2023-12-15 23:07:19,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183353722] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:07:19,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:07:19,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:07:19,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887066537] [2023-12-15 23:07:19,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:07:19,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:07:19,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:07:19,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:07:19,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:07:19,359 INFO L87 Difference]: Start difference. First operand 980 states and 1544 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:20,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:07:20,106 INFO L93 Difference]: Finished difference Result 2301 states and 3688 transitions. [2023-12-15 23:07:20,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 23:07:20,106 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2023-12-15 23:07:20,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:07:20,111 INFO L225 Difference]: With dead ends: 2301 [2023-12-15 23:07:20,111 INFO L226 Difference]: Without dead ends: 1333 [2023-12-15 23:07:20,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 23:07:20,114 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 612 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 23:07:20,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 602 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 23:07:20,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2023-12-15 23:07:20,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 980. [2023-12-15 23:07:20,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 865 states have (on average 1.5791907514450867) internal successors, (1366), 870 states have internal predecessors, (1366), 80 states have call successors, (80), 30 states have call predecessors, (80), 34 states have return successors, (93), 83 states have call predecessors, (93), 80 states have call successors, (93) [2023-12-15 23:07:20,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1539 transitions. [2023-12-15 23:07:20,176 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1539 transitions. Word has length 100 [2023-12-15 23:07:20,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:07:20,176 INFO L495 AbstractCegarLoop]: Abstraction has 980 states and 1539 transitions. [2023-12-15 23:07:20,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:20,177 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1539 transitions. [2023-12-15 23:07:20,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-15 23:07:20,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:07:20,179 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] [2023-12-15 23:07:20,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 23:07:20,179 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:07:20,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:07:20,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1254771359, now seen corresponding path program 1 times [2023-12-15 23:07:20,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:07:20,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199307645] [2023-12-15 23:07:20,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:07:20,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:07:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:20,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:07:20,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:20,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 23:07:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:20,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:07:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:20,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 23:07:20,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:20,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-15 23:07:20,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:20,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:07:20,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:07:20,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199307645] [2023-12-15 23:07:20,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199307645] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:07:20,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:07:20,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:07:20,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365067776] [2023-12-15 23:07:20,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:07:20,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:07:20,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:07:20,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:07:20,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:07:20,321 INFO L87 Difference]: Start difference. First operand 980 states and 1539 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:21,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:07:21,808 INFO L93 Difference]: Finished difference Result 3290 states and 5238 transitions. [2023-12-15 23:07:21,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 23:07:21,809 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2023-12-15 23:07:21,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:07:21,824 INFO L225 Difference]: With dead ends: 3290 [2023-12-15 23:07:21,824 INFO L226 Difference]: Without dead ends: 2322 [2023-12-15 23:07:21,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 23:07:21,831 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 820 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 2009 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 2060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:07:21,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 1184 Invalid, 2060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2009 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 23:07:21,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2322 states. [2023-12-15 23:07:21,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2322 to 1754. [2023-12-15 23:07:21,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1754 states, 1551 states have (on average 1.5718891038039975) internal successors, (2438), 1560 states have internal predecessors, (2438), 140 states have call successors, (140), 54 states have call predecessors, (140), 62 states have return successors, (175), 147 states have call predecessors, (175), 140 states have call successors, (175) [2023-12-15 23:07:21,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 2753 transitions. [2023-12-15 23:07:21,902 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 2753 transitions. Word has length 100 [2023-12-15 23:07:21,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:07:21,903 INFO L495 AbstractCegarLoop]: Abstraction has 1754 states and 2753 transitions. [2023-12-15 23:07:21,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:21,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 2753 transitions. [2023-12-15 23:07:21,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-15 23:07:21,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:07:21,904 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] [2023-12-15 23:07:21,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 23:07:21,904 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:07:21,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:07:21,905 INFO L85 PathProgramCache]: Analyzing trace with hash 112268893, now seen corresponding path program 1 times [2023-12-15 23:07:21,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:07:21,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114543922] [2023-12-15 23:07:21,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:07:21,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:07:21,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:21,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:07:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:21,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 23:07:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:22,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:07:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:22,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 23:07:22,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:22,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-15 23:07:22,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:22,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:07:22,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:07:22,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114543922] [2023-12-15 23:07:22,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114543922] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:07:22,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:07:22,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:07:22,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092291324] [2023-12-15 23:07:22,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:07:22,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:07:22,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:07:22,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:07:22,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:07:22,034 INFO L87 Difference]: Start difference. First operand 1754 states and 2753 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:23,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:07:23,656 INFO L93 Difference]: Finished difference Result 6662 states and 10600 transitions. [2023-12-15 23:07:23,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 23:07:23,657 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2023-12-15 23:07:23,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:07:23,678 INFO L225 Difference]: With dead ends: 6662 [2023-12-15 23:07:23,678 INFO L226 Difference]: Without dead ends: 4920 [2023-12-15 23:07:23,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 23:07:23,685 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 1043 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 1986 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 2040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:07:23,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1063 Valid, 1177 Invalid, 2040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1986 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 23:07:23,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4920 states. [2023-12-15 23:07:23,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4920 to 3287. [2023-12-15 23:07:23,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3287 states, 2916 states have (on average 1.5679012345679013) internal successors, (4572), 2933 states have internal predecessors, (4572), 252 states have call successors, (252), 102 states have call predecessors, (252), 118 states have return successors, (349), 267 states have call predecessors, (349), 252 states have call successors, (349) [2023-12-15 23:07:23,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3287 states to 3287 states and 5173 transitions. [2023-12-15 23:07:23,830 INFO L78 Accepts]: Start accepts. Automaton has 3287 states and 5173 transitions. Word has length 100 [2023-12-15 23:07:23,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:07:23,830 INFO L495 AbstractCegarLoop]: Abstraction has 3287 states and 5173 transitions. [2023-12-15 23:07:23,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:23,830 INFO L276 IsEmpty]: Start isEmpty. Operand 3287 states and 5173 transitions. [2023-12-15 23:07:23,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-15 23:07:23,833 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:07:23,833 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] [2023-12-15 23:07:23,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 23:07:23,833 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:07:23,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:07:23,835 INFO L85 PathProgramCache]: Analyzing trace with hash 352508639, now seen corresponding path program 1 times [2023-12-15 23:07:23,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:07:23,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632285768] [2023-12-15 23:07:23,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:07:23,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:07:23,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:23,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:07:23,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:23,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 23:07:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:23,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:07:23,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:23,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 23:07:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:23,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-15 23:07:23,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:24,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:07:24,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:07:24,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632285768] [2023-12-15 23:07:24,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632285768] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:07:24,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:07:24,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:07:24,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563841147] [2023-12-15 23:07:24,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:07:24,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:07:24,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:07:24,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:07:24,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:07:24,002 INFO L87 Difference]: Start difference. First operand 3287 states and 5173 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:25,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:07:25,813 INFO L93 Difference]: Finished difference Result 12537 states and 19994 transitions. [2023-12-15 23:07:25,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 23:07:25,814 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2023-12-15 23:07:25,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:07:25,853 INFO L225 Difference]: With dead ends: 12537 [2023-12-15 23:07:25,853 INFO L226 Difference]: Without dead ends: 9262 [2023-12-15 23:07:25,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 23:07:25,867 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 864 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 2313 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 2366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 23:07:25,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 1173 Invalid, 2366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 2313 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 23:07:25,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9262 states. [2023-12-15 23:07:26,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9262 to 6272. [2023-12-15 23:07:26,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6272 states, 5573 states have (on average 1.5657635026018302) internal successors, (8726), 5606 states have internal predecessors, (8726), 468 states have call successors, (468), 198 states have call predecessors, (468), 230 states have return successors, (743), 499 states have call predecessors, (743), 468 states have call successors, (743) [2023-12-15 23:07:26,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6272 states to 6272 states and 9937 transitions. [2023-12-15 23:07:26,154 INFO L78 Accepts]: Start accepts. Automaton has 6272 states and 9937 transitions. Word has length 100 [2023-12-15 23:07:26,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:07:26,154 INFO L495 AbstractCegarLoop]: Abstraction has 6272 states and 9937 transitions. [2023-12-15 23:07:26,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:26,155 INFO L276 IsEmpty]: Start isEmpty. Operand 6272 states and 9937 transitions. [2023-12-15 23:07:26,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-15 23:07:26,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:07:26,158 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] [2023-12-15 23:07:26,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 23:07:26,159 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:07:26,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:07:26,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1191542301, now seen corresponding path program 1 times [2023-12-15 23:07:26,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:07:26,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358108485] [2023-12-15 23:07:26,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:07:26,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:07:26,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:26,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:07:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:26,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 23:07:26,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:26,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:07:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:26,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 23:07:26,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:26,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-15 23:07:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:26,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:07:26,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:07:26,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358108485] [2023-12-15 23:07:26,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358108485] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:07:26,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:07:26,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:07:26,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96130196] [2023-12-15 23:07:26,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:07:26,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:07:26,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:07:26,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:07:26,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:07:26,259 INFO L87 Difference]: Start difference. First operand 6272 states and 9937 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:27,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:07:27,159 INFO L93 Difference]: Finished difference Result 14361 states and 23119 transitions. [2023-12-15 23:07:27,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 23:07:27,159 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2023-12-15 23:07:27,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:07:27,200 INFO L225 Difference]: With dead ends: 14361 [2023-12-15 23:07:27,200 INFO L226 Difference]: Without dead ends: 8101 [2023-12-15 23:07:27,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 23:07:27,218 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 611 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 23:07:27,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 601 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 23:07:27,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8101 states. [2023-12-15 23:07:27,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8101 to 6272. [2023-12-15 23:07:27,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6272 states, 5573 states have (on average 1.559842095819128) internal successors, (8693), 5606 states have internal predecessors, (8693), 468 states have call successors, (468), 198 states have call predecessors, (468), 230 states have return successors, (743), 499 states have call predecessors, (743), 468 states have call successors, (743) [2023-12-15 23:07:27,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6272 states to 6272 states and 9904 transitions. [2023-12-15 23:07:27,516 INFO L78 Accepts]: Start accepts. Automaton has 6272 states and 9904 transitions. Word has length 100 [2023-12-15 23:07:27,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:07:27,516 INFO L495 AbstractCegarLoop]: Abstraction has 6272 states and 9904 transitions. [2023-12-15 23:07:27,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:27,517 INFO L276 IsEmpty]: Start isEmpty. Operand 6272 states and 9904 transitions. [2023-12-15 23:07:27,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-15 23:07:27,522 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:07:27,522 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] [2023-12-15 23:07:27,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 23:07:27,522 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:07:27,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:07:27,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1218607903, now seen corresponding path program 1 times [2023-12-15 23:07:27,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:07:27,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917286046] [2023-12-15 23:07:27,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:07:27,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:07:27,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:27,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:07:27,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:27,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 23:07:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:27,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:07:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:27,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 23:07:27,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:27,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-15 23:07:27,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:27,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:07:27,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:07:27,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917286046] [2023-12-15 23:07:27,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917286046] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:07:27,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:07:27,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:07:27,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514003466] [2023-12-15 23:07:27,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:07:27,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:07:27,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:07:27,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:07:27,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:07:27,646 INFO L87 Difference]: Start difference. First operand 6272 states and 9904 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:29,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:07:29,296 INFO L93 Difference]: Finished difference Result 23406 states and 37392 transitions. [2023-12-15 23:07:29,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 23:07:29,296 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2023-12-15 23:07:29,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:07:29,346 INFO L225 Difference]: With dead ends: 23406 [2023-12-15 23:07:29,346 INFO L226 Difference]: Without dead ends: 17146 [2023-12-15 23:07:29,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 23:07:29,367 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 986 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 1632 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1006 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:07:29,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1006 Valid, 784 Invalid, 1710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1632 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 23:07:29,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17146 states. [2023-12-15 23:07:29,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17146 to 12354. [2023-12-15 23:07:29,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12354 states, 11015 states have (on average 1.5579664094416705) internal successors, (17161), 11080 states have internal predecessors, (17161), 884 states have call successors, (884), 390 states have call predecessors, (884), 454 states have return successors, (1677), 947 states have call predecessors, (1677), 884 states have call successors, (1677) [2023-12-15 23:07:29,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12354 states to 12354 states and 19722 transitions. [2023-12-15 23:07:29,926 INFO L78 Accepts]: Start accepts. Automaton has 12354 states and 19722 transitions. Word has length 100 [2023-12-15 23:07:29,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:07:29,927 INFO L495 AbstractCegarLoop]: Abstraction has 12354 states and 19722 transitions. [2023-12-15 23:07:29,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:29,927 INFO L276 IsEmpty]: Start isEmpty. Operand 12354 states and 19722 transitions. [2023-12-15 23:07:29,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-15 23:07:29,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:07:29,934 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] [2023-12-15 23:07:29,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 23:07:29,934 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:07:29,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:07:29,935 INFO L85 PathProgramCache]: Analyzing trace with hash -858728995, now seen corresponding path program 1 times [2023-12-15 23:07:29,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:07:29,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997574298] [2023-12-15 23:07:29,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:07:29,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:07:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:29,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:07:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:29,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 23:07:30,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:30,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:07:30,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:30,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 23:07:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:30,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-15 23:07:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:30,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:07:30,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:07:30,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997574298] [2023-12-15 23:07:30,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997574298] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:07:30,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:07:30,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:07:30,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236452282] [2023-12-15 23:07:30,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:07:30,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:07:30,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:07:30,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:07:30,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:07:30,043 INFO L87 Difference]: Start difference. First operand 12354 states and 19722 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:31,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:07:31,095 INFO L93 Difference]: Finished difference Result 27959 states and 45370 transitions. [2023-12-15 23:07:31,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 23:07:31,096 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2023-12-15 23:07:31,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:07:31,142 INFO L225 Difference]: With dead ends: 27959 [2023-12-15 23:07:31,142 INFO L226 Difference]: Without dead ends: 15617 [2023-12-15 23:07:31,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 23:07:31,170 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 614 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 23:07:31,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [628 Valid, 601 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 23:07:31,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15617 states. [2023-12-15 23:07:31,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15617 to 12354. [2023-12-15 23:07:31,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12354 states, 11015 states have (on average 1.5520653654108034) internal successors, (17096), 11080 states have internal predecessors, (17096), 884 states have call successors, (884), 390 states have call predecessors, (884), 454 states have return successors, (1677), 947 states have call predecessors, (1677), 884 states have call successors, (1677) [2023-12-15 23:07:31,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12354 states to 12354 states and 19657 transitions. [2023-12-15 23:07:31,740 INFO L78 Accepts]: Start accepts. Automaton has 12354 states and 19657 transitions. Word has length 100 [2023-12-15 23:07:31,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:07:31,741 INFO L495 AbstractCegarLoop]: Abstraction has 12354 states and 19657 transitions. [2023-12-15 23:07:31,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:31,741 INFO L276 IsEmpty]: Start isEmpty. Operand 12354 states and 19657 transitions. [2023-12-15 23:07:31,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-15 23:07:31,750 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:07:31,750 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] [2023-12-15 23:07:31,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 23:07:31,751 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:07:31,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:07:31,751 INFO L85 PathProgramCache]: Analyzing trace with hash 28493851, now seen corresponding path program 1 times [2023-12-15 23:07:31,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:07:31,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499816750] [2023-12-15 23:07:31,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:07:31,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:07:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:31,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:07:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:31,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 23:07:31,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:31,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:07:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:31,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 23:07:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:31,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-15 23:07:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:31,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:07:31,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:07:31,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499816750] [2023-12-15 23:07:31,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499816750] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:07:31,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:07:31,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:07:31,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146404690] [2023-12-15 23:07:31,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:07:31,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:07:31,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:07:31,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:07:31,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:07:31,858 INFO L87 Difference]: Start difference. First operand 12354 states and 19657 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:34,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:07:34,160 INFO L93 Difference]: Finished difference Result 43658 states and 70316 transitions. [2023-12-15 23:07:34,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 23:07:34,160 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2023-12-15 23:07:34,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:07:34,249 INFO L225 Difference]: With dead ends: 43658 [2023-12-15 23:07:34,249 INFO L226 Difference]: Without dead ends: 31316 [2023-12-15 23:07:34,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 23:07:34,271 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 803 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 1987 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 2041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:07:34,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 1177 Invalid, 2041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1987 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 23:07:34,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31316 states. [2023-12-15 23:07:35,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31316 to 24645. [2023-12-15 23:07:35,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24645 states, 22058 states have (on average 1.551455254329495) internal successors, (34222), 22187 states have internal predecessors, (34222), 1684 states have call successors, (1684), 774 states have call predecessors, (1684), 902 states have return successors, (3999), 1811 states have call predecessors, (3999), 1684 states have call successors, (3999) [2023-12-15 23:07:35,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24645 states to 24645 states and 39905 transitions. [2023-12-15 23:07:35,290 INFO L78 Accepts]: Start accepts. Automaton has 24645 states and 39905 transitions. Word has length 100 [2023-12-15 23:07:35,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:07:35,290 INFO L495 AbstractCegarLoop]: Abstraction has 24645 states and 39905 transitions. [2023-12-15 23:07:35,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:35,290 INFO L276 IsEmpty]: Start isEmpty. Operand 24645 states and 39905 transitions. [2023-12-15 23:07:35,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-15 23:07:35,304 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:07:35,305 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] [2023-12-15 23:07:35,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 23:07:35,305 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:07:35,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:07:35,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1882548707, now seen corresponding path program 1 times [2023-12-15 23:07:35,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:07:35,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147645684] [2023-12-15 23:07:35,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:07:35,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:07:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:35,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:07:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:35,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 23:07:35,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:35,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:07:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:35,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 23:07:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:35,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-15 23:07:35,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:35,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:07:35,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:07:35,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147645684] [2023-12-15 23:07:35,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147645684] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:07:35,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:07:35,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:07:35,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069172240] [2023-12-15 23:07:35,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:07:35,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:07:35,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:07:35,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:07:35,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:07:35,407 INFO L87 Difference]: Start difference. First operand 24645 states and 39905 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:38,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:07:38,255 INFO L93 Difference]: Finished difference Result 71436 states and 115949 transitions. [2023-12-15 23:07:38,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-15 23:07:38,256 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2023-12-15 23:07:38,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:07:38,399 INFO L225 Difference]: With dead ends: 71436 [2023-12-15 23:07:38,399 INFO L226 Difference]: Without dead ends: 46804 [2023-12-15 23:07:38,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2023-12-15 23:07:38,436 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 818 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 1378 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 1462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 23:07:38,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 800 Invalid, 1462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1378 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 23:07:38,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46804 states. [2023-12-15 23:07:39,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46804 to 37273. [2023-12-15 23:07:39,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37273 states, 33352 states have (on average 1.5386483569201248) internal successors, (51317), 33610 states have internal predecessors, (51317), 2564 states have call successors, (2564), 1164 states have call predecessors, (2564), 1356 states have return successors, (5609), 2626 states have call predecessors, (5609), 2564 states have call successors, (5609) [2023-12-15 23:07:39,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37273 states to 37273 states and 59490 transitions. [2023-12-15 23:07:39,870 INFO L78 Accepts]: Start accepts. Automaton has 37273 states and 59490 transitions. Word has length 100 [2023-12-15 23:07:39,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:07:39,871 INFO L495 AbstractCegarLoop]: Abstraction has 37273 states and 59490 transitions. [2023-12-15 23:07:39,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:39,871 INFO L276 IsEmpty]: Start isEmpty. Operand 37273 states and 59490 transitions. [2023-12-15 23:07:39,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-15 23:07:39,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:07:39,949 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:07:39,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 23:07:39,949 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:07:39,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:07:39,950 INFO L85 PathProgramCache]: Analyzing trace with hash -227113548, now seen corresponding path program 1 times [2023-12-15 23:07:39,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:07:39,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091863081] [2023-12-15 23:07:39,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:07:39,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:07:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:39,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:07:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:40,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 23:07:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:40,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:07:40,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:40,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 23:07:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:40,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-15 23:07:40,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:40,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 23:07:40,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:40,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 23:07:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:40,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-15 23:07:40,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:40,074 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-15 23:07:40,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:07:40,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091863081] [2023-12-15 23:07:40,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091863081] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:07:40,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768028497] [2023-12-15 23:07:40,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:07:40,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:07:40,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:07:40,077 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 23:07:40,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 23:07:40,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:40,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 23:07:40,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:07:40,301 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-15 23:07:40,302 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 23:07:40,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768028497] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:07:40,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 23:07:40,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-15 23:07:40,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857955787] [2023-12-15 23:07:40,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:07:40,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:07:40,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:07:40,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:07:40,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:07:40,304 INFO L87 Difference]: Start difference. First operand 37273 states and 59490 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 23:07:42,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:07:42,522 INFO L93 Difference]: Finished difference Result 111208 states and 178720 transitions. [2023-12-15 23:07:42,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:07:42,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 162 [2023-12-15 23:07:42,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:07:42,856 INFO L225 Difference]: With dead ends: 111208 [2023-12-15 23:07:42,857 INFO L226 Difference]: Without dead ends: 73948 [2023-12-15 23:07:42,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:07:42,910 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 274 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:07:42,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 568 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:07:42,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73948 states. [2023-12-15 23:07:45,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73948 to 73752. [2023-12-15 23:07:45,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73752 states, 66013 states have (on average 1.535379394967658) internal successors, (101355), 66528 states have internal predecessors, (101355), 5026 states have call successors, (5026), 2328 states have call predecessors, (5026), 2712 states have return successors, (10989), 5023 states have call predecessors, (10989), 5026 states have call successors, (10989) [2023-12-15 23:07:45,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73752 states to 73752 states and 117370 transitions. [2023-12-15 23:07:45,733 INFO L78 Accepts]: Start accepts. Automaton has 73752 states and 117370 transitions. Word has length 162 [2023-12-15 23:07:45,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:07:45,733 INFO L495 AbstractCegarLoop]: Abstraction has 73752 states and 117370 transitions. [2023-12-15 23:07:45,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 23:07:45,733 INFO L276 IsEmpty]: Start isEmpty. Operand 73752 states and 117370 transitions. [2023-12-15 23:07:45,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-15 23:07:45,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:07:45,860 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:07:45,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 23:07:46,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-15 23:07:46,068 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:07:46,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:07:46,068 INFO L85 PathProgramCache]: Analyzing trace with hash 738723412, now seen corresponding path program 1 times [2023-12-15 23:07:46,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:07:46,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590438576] [2023-12-15 23:07:46,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:07:46,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:07:46,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:46,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:07:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:46,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 23:07:46,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:46,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:07:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:46,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 23:07:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:46,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-15 23:07:46,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:46,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 23:07:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:46,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 23:07:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:46,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-15 23:07:46,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:46,189 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-15 23:07:46,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:07:46,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590438576] [2023-12-15 23:07:46,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590438576] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:07:46,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810373358] [2023-12-15 23:07:46,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:07:46,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:07:46,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:07:46,190 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 23:07:46,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 23:07:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:46,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 23:07:46,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:07:46,380 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-15 23:07:46,380 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 23:07:46,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810373358] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:07:46,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 23:07:46,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-15 23:07:46,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242246123] [2023-12-15 23:07:46,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:07:46,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:07:46,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:07:46,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:07:46,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:07:46,382 INFO L87 Difference]: Start difference. First operand 73752 states and 117370 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 23:07:50,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:07:50,619 INFO L93 Difference]: Finished difference Result 219677 states and 351916 transitions. [2023-12-15 23:07:50,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:07:50,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 162 [2023-12-15 23:07:50,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:07:51,259 INFO L225 Difference]: With dead ends: 219677 [2023-12-15 23:07:51,259 INFO L226 Difference]: Without dead ends: 145938 [2023-12-15 23:07:51,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:07:51,386 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 269 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:07:51,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 568 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:07:51,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145938 states. [2023-12-15 23:07:56,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145938 to 145548. [2023-12-15 23:07:56,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145548 states, 130463 states have (on average 1.5328253987720657) internal successors, (199977), 131492 states have internal predecessors, (199977), 9660 states have call successors, (9660), 4656 states have call predecessors, (9660), 5424 states have return successors, (21459), 9527 states have call predecessors, (21459), 9660 states have call successors, (21459) [2023-12-15 23:07:56,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145548 states to 145548 states and 231096 transitions. [2023-12-15 23:07:56,910 INFO L78 Accepts]: Start accepts. Automaton has 145548 states and 231096 transitions. Word has length 162 [2023-12-15 23:07:56,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:07:56,910 INFO L495 AbstractCegarLoop]: Abstraction has 145548 states and 231096 transitions. [2023-12-15 23:07:56,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 23:07:56,911 INFO L276 IsEmpty]: Start isEmpty. Operand 145548 states and 231096 transitions. [2023-12-15 23:07:57,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-15 23:07:57,082 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:07:57,082 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:07:57,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 23:07:57,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-15 23:07:57,288 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:07:57,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:07:57,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1450222004, now seen corresponding path program 1 times [2023-12-15 23:07:57,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:07:57,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399513772] [2023-12-15 23:07:57,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:07:57,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:07:57,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:57,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:07:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:57,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 23:07:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:57,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:07:57,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:57,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 23:07:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:57,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-15 23:07:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:57,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 23:07:57,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:57,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 23:07:57,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:57,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-15 23:07:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:57,421 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-15 23:07:57,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:07:57,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399513772] [2023-12-15 23:07:57,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399513772] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:07:57,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382279137] [2023-12-15 23:07:57,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:07:57,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:07:57,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:07:57,423 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 23:07:57,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 23:07:57,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:57,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 667 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 23:07:57,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:07:57,606 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-15 23:07:57,606 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 23:07:57,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382279137] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:07:57,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 23:07:57,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-15 23:07:57,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50597031] [2023-12-15 23:07:57,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:07:57,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:07:57,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:07:57,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:07:57,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:07:57,608 INFO L87 Difference]: Start difference. First operand 145548 states and 231096 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 23:08:06,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:08:06,005 INFO L93 Difference]: Finished difference Result 434281 states and 694220 transitions. [2023-12-15 23:08:06,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:08:06,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 162 [2023-12-15 23:08:06,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:08:07,115 INFO L225 Difference]: With dead ends: 434281 [2023-12-15 23:08:07,115 INFO L226 Difference]: Without dead ends: 288746 Received shutdown request... [2023-12-15 23:08:07,318 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 23:08:07,319 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 23:08:07,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:08:07,346 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 259 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:08:07,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 568 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:08:07,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288746 states. [2023-12-15 23:08:07,524 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 23:08:07,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 23:08:07,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:08:07,728 WARN L619 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2023-12-15 23:08:07,732 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:08:07,734 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 23:08:07,735 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 11:08:07 BoogieIcfgContainer [2023-12-15 23:08:07,735 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 23:08:07,735 INFO L158 Benchmark]: Toolchain (without parser) took 56462.54ms. Allocated memory was 199.2MB in the beginning and 7.1GB in the end (delta: 6.9GB). Free memory was 155.1MB in the beginning and 5.2GB in the end (delta: -5.1GB). Peak memory consumption was 2.7GB. Max. memory is 8.0GB. [2023-12-15 23:08:07,735 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 199.2MB. Free memory is still 156.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 23:08:07,736 INFO L158 Benchmark]: CACSL2BoogieTranslator took 265.49ms. Allocated memory is still 199.2MB. Free memory was 154.7MB in the beginning and 136.8MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-15 23:08:07,736 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.58ms. Allocated memory is still 199.2MB. Free memory was 136.8MB in the beginning and 133.7MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 23:08:07,736 INFO L158 Benchmark]: Boogie Preprocessor took 56.04ms. Allocated memory is still 199.2MB. Free memory was 133.7MB in the beginning and 130.1MB in the end (delta: 3.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 23:08:07,736 INFO L158 Benchmark]: RCFGBuilder took 479.42ms. Allocated memory is still 199.2MB. Free memory was 130.1MB in the beginning and 92.4MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. [2023-12-15 23:08:07,736 INFO L158 Benchmark]: TraceAbstraction took 55599.72ms. Allocated memory was 199.2MB in the beginning and 7.1GB in the end (delta: 6.9GB). Free memory was 91.8MB in the beginning and 5.2GB in the end (delta: -5.1GB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. [2023-12-15 23:08:07,737 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 199.2MB. Free memory is still 156.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 265.49ms. Allocated memory is still 199.2MB. Free memory was 154.7MB in the beginning and 136.8MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 57.58ms. Allocated memory is still 199.2MB. Free memory was 136.8MB in the beginning and 133.7MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 56.04ms. Allocated memory is still 199.2MB. Free memory was 133.7MB in the beginning and 130.1MB in the end (delta: 3.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 479.42ms. Allocated memory is still 199.2MB. Free memory was 130.1MB in the beginning and 92.4MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. * TraceAbstraction took 55599.72ms. Allocated memory was 199.2MB in the beginning and 7.1GB in the end (delta: 6.9GB). Free memory was 91.8MB in the beginning and 5.2GB in the end (delta: -5.1GB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 20]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 20). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 210 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 55.5s, OverallIterations: 17, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.4s, AutomataDifference: 38.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12000 SdHoareTripleChecker+Valid, 12.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11789 mSDsluCounter, 13288 SdHoareTripleChecker+Invalid, 10.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9526 mSDsCounter, 868 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21063 IncrementalHoareTripleChecker+Invalid, 21931 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 868 mSolverCounterUnsat, 3762 mSDtfsCounter, 21063 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 901 GetRequests, 716 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=145548occurred in iteration=16, InterpolantAutomatonStates: 172, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 13.1s AutomataMinimizationTime, 17 MinimizatonAttempts, 33388 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 2372 NumberOfCodeBlocks, 2372 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 2352 ConstructedInterpolants, 0 QuantifiedInterpolants, 5562 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2019 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 20 InterpolantComputations, 17 PerfectInterpolantSequences, 186/288 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown