/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/combinations/Problem05_label48+token_ring.11.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 17:41:57,257 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 17:41:57,329 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 17:41:57,332 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 17:41:57,332 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 17:41:57,355 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 17:41:57,356 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 17:41:57,356 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 17:41:57,357 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 17:41:57,360 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 17:41:57,360 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 17:41:57,360 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 17:41:57,361 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 17:41:57,362 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 17:41:57,362 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 17:41:57,362 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 17:41:57,362 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 17:41:57,362 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 17:41:57,363 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 17:41:57,363 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 17:41:57,363 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 17:41:57,363 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 17:41:57,363 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 17:41:57,364 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 17:41:57,364 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 17:41:57,364 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 17:41:57,364 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 17:41:57,364 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 17:41:57,365 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 17:41:57,365 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 17:41:57,366 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 17:41:57,366 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 17:41:57,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:41:57,366 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 17:41:57,366 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 17:41:57,366 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 17:41:57,366 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 17:41:57,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 17:41:57,367 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 17:41:57,367 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 17:41:57,367 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 17:41:57,367 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 17:41:57,367 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 17:41:57,367 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 17:41:57,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 17:41:57,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 17:41:57,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 17:41:57,547 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 17:41:57,547 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 17:41:57,548 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label48+token_ring.11.cil-2.c [2023-12-15 17:41:58,700 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 17:41:59,180 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 17:41:59,181 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label48+token_ring.11.cil-2.c [2023-12-15 17:41:59,224 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c8c86a59/2eebe72c0d2f49b5b2e5e2dcf4a03e38/FLAGb0c4daa85 [2023-12-15 17:41:59,236 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c8c86a59/2eebe72c0d2f49b5b2e5e2dcf4a03e38 [2023-12-15 17:41:59,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 17:41:59,238 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 17:41:59,240 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 17:41:59,240 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 17:41:59,243 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 17:41:59,244 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:41:59" (1/1) ... [2023-12-15 17:41:59,244 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66a5f640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:41:59, skipping insertion in model container [2023-12-15 17:41:59,244 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:41:59" (1/1) ... [2023-12-15 17:41:59,392 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 17:42:00,502 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label48+token_ring.11.cil-2.c[375709,375722] [2023-12-15 17:42:00,528 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label48+token_ring.11.cil-2.c[383339,383352] [2023-12-15 17:42:00,728 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:42:00,738 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 17:42:01,258 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label48+token_ring.11.cil-2.c[375709,375722] [2023-12-15 17:42:01,294 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label48+token_ring.11.cil-2.c[383339,383352] [2023-12-15 17:42:01,310 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:42:01,351 INFO L206 MainTranslator]: Completed translation [2023-12-15 17:42:01,351 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:42:01 WrapperNode [2023-12-15 17:42:01,351 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 17:42:01,352 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 17:42:01,352 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 17:42:01,352 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 17:42:01,357 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:42:01" (1/1) ... [2023-12-15 17:42:01,434 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:42:01" (1/1) ... [2023-12-15 17:42:01,672 INFO L138 Inliner]: procedures = 66, calls = 74, calls flagged for inlining = 44, calls inlined = 44, statements flattened = 13173 [2023-12-15 17:42:01,672 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 17:42:01,673 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 17:42:01,673 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 17:42:01,673 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 17:42:01,777 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:42:01" (1/1) ... [2023-12-15 17:42:01,777 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:42:01" (1/1) ... [2023-12-15 17:42:01,832 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:42:01" (1/1) ... [2023-12-15 17:42:01,923 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 17:42:01,923 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:42:01" (1/1) ... [2023-12-15 17:42:01,923 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:42:01" (1/1) ... [2023-12-15 17:42:02,123 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:42:01" (1/1) ... [2023-12-15 17:42:02,161 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:42:01" (1/1) ... [2023-12-15 17:42:02,185 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:42:01" (1/1) ... [2023-12-15 17:42:02,205 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:42:01" (1/1) ... [2023-12-15 17:42:02,265 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 17:42:02,266 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 17:42:02,267 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 17:42:02,267 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 17:42:02,267 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:42:01" (1/1) ... [2023-12-15 17:42:02,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:42:02,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:42:02,291 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 17:42:02,296 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 17:42:02,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 17:42:02,312 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-15 17:42:02,312 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-15 17:42:02,313 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-15 17:42:02,313 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-15 17:42:02,313 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-15 17:42:02,313 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-15 17:42:02,313 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-15 17:42:02,314 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-15 17:42:02,314 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-15 17:42:02,314 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-15 17:42:02,314 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-15 17:42:02,314 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-15 17:42:02,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 17:42:02,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 17:42:02,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 17:42:02,407 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 17:42:02,408 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 17:42:07,715 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 17:42:07,790 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 17:42:07,790 INFO L309 CfgBuilder]: Removed 15 assume(true) statements. [2023-12-15 17:42:07,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:42:07 BoogieIcfgContainer [2023-12-15 17:42:07,791 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 17:42:07,792 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 17:42:07,792 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 17:42:07,795 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 17:42:07,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 05:41:59" (1/3) ... [2023-12-15 17:42:07,795 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32cda708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:42:07, skipping insertion in model container [2023-12-15 17:42:07,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:42:01" (2/3) ... [2023-12-15 17:42:07,795 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32cda708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:42:07, skipping insertion in model container [2023-12-15 17:42:07,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:42:07" (3/3) ... [2023-12-15 17:42:07,796 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.11.cil-2.c [2023-12-15 17:42:07,894 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 17:42:07,894 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-15 17:42:07,950 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 17:42:07,954 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;@1b60a70e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 17:42:07,954 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-15 17:42:07,963 INFO L276 IsEmpty]: Start isEmpty. Operand has 2448 states, 2414 states have (on average 1.876553438276719) internal successors, (4530), 2417 states have internal predecessors, (4530), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-15 17:42:07,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-15 17:42:07,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:42:07,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:42:07,976 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:42:07,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:42:07,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1361111705, now seen corresponding path program 1 times [2023-12-15 17:42:07,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:42:07,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472438754] [2023-12-15 17:42:07,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:42:07,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:42:08,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:08,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:42:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:08,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 17:42:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:08,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 17:42:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:08,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-15 17:42:08,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:08,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-15 17:42:08,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:08,370 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 17:42:08,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:42:08,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472438754] [2023-12-15 17:42:08,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472438754] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:42:08,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:42:08,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 17:42:08,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107644854] [2023-12-15 17:42:08,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:42:08,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 17:42:08,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:42:08,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 17:42:08,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 17:42:08,400 INFO L87 Difference]: Start difference. First operand has 2448 states, 2414 states have (on average 1.876553438276719) internal successors, (4530), 2417 states have internal predecessors, (4530), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 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 17:42:09,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:42:09,885 INFO L93 Difference]: Finished difference Result 5006 states and 9354 transitions. [2023-12-15 17:42:09,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 17:42:09,888 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 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 151 [2023-12-15 17:42:09,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:42:09,916 INFO L225 Difference]: With dead ends: 5006 [2023-12-15 17:42:09,916 INFO L226 Difference]: Without dead ends: 2564 [2023-12-15 17:42:09,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 17:42:09,929 INFO L413 NwaCegarLoop]: 4238 mSDtfsCounter, 902 mSDsluCounter, 12182 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 16420 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:42:09,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [925 Valid, 16420 Invalid, 1046 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 17:42:09,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2564 states. [2023-12-15 17:42:10,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2564 to 2444. [2023-12-15 17:42:10,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2444 states, 2411 states have (on average 1.838241393612609) internal successors, (4432), 2413 states have internal predecessors, (4432), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-15 17:42:10,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2444 states to 2444 states and 4482 transitions. [2023-12-15 17:42:10,055 INFO L78 Accepts]: Start accepts. Automaton has 2444 states and 4482 transitions. Word has length 151 [2023-12-15 17:42:10,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:42:10,055 INFO L495 AbstractCegarLoop]: Abstraction has 2444 states and 4482 transitions. [2023-12-15 17:42:10,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 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 17:42:10,056 INFO L276 IsEmpty]: Start isEmpty. Operand 2444 states and 4482 transitions. [2023-12-15 17:42:10,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-15 17:42:10,065 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:42:10,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:42:10,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 17:42:10,066 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:42:10,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:42:10,067 INFO L85 PathProgramCache]: Analyzing trace with hash 774771497, now seen corresponding path program 1 times [2023-12-15 17:42:10,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:42:10,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568055231] [2023-12-15 17:42:10,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:42:10,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:42:10,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:10,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:42:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:10,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 17:42:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:10,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 17:42:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:10,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-15 17:42:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:10,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-15 17:42:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:10,389 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 17:42:10,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:42:10,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568055231] [2023-12-15 17:42:10,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568055231] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:42:10,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:42:10,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 17:42:10,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446490261] [2023-12-15 17:42:10,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:42:10,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 17:42:10,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:42:10,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 17:42:10,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:42:10,392 INFO L87 Difference]: Start difference. First operand 2444 states and 4482 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 4 states have internal predecessors, (141), 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 17:42:12,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:42:12,794 INFO L93 Difference]: Finished difference Result 3313 states and 5934 transitions. [2023-12-15 17:42:12,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 17:42:12,795 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 4 states have internal predecessors, (141), 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 151 [2023-12-15 17:42:12,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:42:12,807 INFO L225 Difference]: With dead ends: 3313 [2023-12-15 17:42:12,807 INFO L226 Difference]: Without dead ends: 3007 [2023-12-15 17:42:12,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:42:12,810 INFO L413 NwaCegarLoop]: 4252 mSDtfsCounter, 5325 mSDsluCounter, 12699 mSDsCounter, 0 mSdLazyCounter, 2175 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5343 SdHoareTripleChecker+Valid, 16951 SdHoareTripleChecker+Invalid, 2279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-15 17:42:12,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5343 Valid, 16951 Invalid, 2279 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [104 Valid, 2175 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-15 17:42:12,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2023-12-15 17:42:12,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 2768. [2023-12-15 17:42:12,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2768 states, 2708 states have (on average 1.8172082717872968) internal successors, (4921), 2711 states have internal predecessors, (4921), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2023-12-15 17:42:12,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2768 states to 2768 states and 5014 transitions. [2023-12-15 17:42:12,879 INFO L78 Accepts]: Start accepts. Automaton has 2768 states and 5014 transitions. Word has length 151 [2023-12-15 17:42:12,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:42:12,880 INFO L495 AbstractCegarLoop]: Abstraction has 2768 states and 5014 transitions. [2023-12-15 17:42:12,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 4 states have internal predecessors, (141), 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 17:42:12,880 INFO L276 IsEmpty]: Start isEmpty. Operand 2768 states and 5014 transitions. [2023-12-15 17:42:12,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-15 17:42:12,882 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:42:12,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:42:12,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 17:42:12,882 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:42:12,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:42:12,884 INFO L85 PathProgramCache]: Analyzing trace with hash 653545645, now seen corresponding path program 1 times [2023-12-15 17:42:12,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:42:12,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665923645] [2023-12-15 17:42:12,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:42:12,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:42:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:12,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:42:12,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:13,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 17:42:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:13,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 17:42:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:13,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-15 17:42:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:13,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-15 17:42:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:13,081 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 17:42:13,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:42:13,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665923645] [2023-12-15 17:42:13,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665923645] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:42:13,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:42:13,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:42:13,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735411872] [2023-12-15 17:42:13,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:42:13,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:42:13,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:42:13,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:42:13,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:42:13,083 INFO L87 Difference]: Start difference. First operand 2768 states and 5014 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 17:42:16,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:42:16,276 INFO L93 Difference]: Finished difference Result 4098 states and 7236 transitions. [2023-12-15 17:42:16,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 17:42:16,276 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2023-12-15 17:42:16,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:42:16,289 INFO L225 Difference]: With dead ends: 4098 [2023-12-15 17:42:16,289 INFO L226 Difference]: Without dead ends: 3468 [2023-12-15 17:42:16,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 17:42:16,293 INFO L413 NwaCegarLoop]: 4390 mSDtfsCounter, 5356 mSDsluCounter, 17256 mSDsCounter, 0 mSdLazyCounter, 3461 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5374 SdHoareTripleChecker+Valid, 21646 SdHoareTripleChecker+Invalid, 3520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 3461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-15 17:42:16,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5374 Valid, 21646 Invalid, 3520 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 3461 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-15 17:42:16,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3468 states. [2023-12-15 17:42:16,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3468 to 3067. [2023-12-15 17:42:16,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3067 states, 2980 states have (on average 1.7986577181208054) internal successors, (5360), 2984 states have internal predecessors, (5360), 65 states have call successors, (65), 18 states have call predecessors, (65), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2023-12-15 17:42:16,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3067 states to 3067 states and 5495 transitions. [2023-12-15 17:42:16,370 INFO L78 Accepts]: Start accepts. Automaton has 3067 states and 5495 transitions. Word has length 151 [2023-12-15 17:42:16,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:42:16,370 INFO L495 AbstractCegarLoop]: Abstraction has 3067 states and 5495 transitions. [2023-12-15 17:42:16,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 17:42:16,371 INFO L276 IsEmpty]: Start isEmpty. Operand 3067 states and 5495 transitions. [2023-12-15 17:42:16,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-15 17:42:16,372 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:42:16,372 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:42:16,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 17:42:16,372 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:42:16,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:42:16,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1328705771, now seen corresponding path program 1 times [2023-12-15 17:42:16,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:42:16,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124712853] [2023-12-15 17:42:16,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:42:16,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:42:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:16,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:42:16,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:16,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 17:42:16,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:16,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 17:42:16,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:16,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-15 17:42:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:16,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-15 17:42:16,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:16,717 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 17:42:16,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:42:16,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124712853] [2023-12-15 17:42:16,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124712853] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:42:16,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:42:16,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:42:16,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139167022] [2023-12-15 17:42:16,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:42:16,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:42:16,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:42:16,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:42:16,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:42:16,719 INFO L87 Difference]: Start difference. First operand 3067 states and 5495 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 17:42:20,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:42:20,180 INFO L93 Difference]: Finished difference Result 5248 states and 9131 transitions. [2023-12-15 17:42:20,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 17:42:20,181 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2023-12-15 17:42:20,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:42:20,197 INFO L225 Difference]: With dead ends: 5248 [2023-12-15 17:42:20,198 INFO L226 Difference]: Without dead ends: 4319 [2023-12-15 17:42:20,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 17:42:20,203 INFO L413 NwaCegarLoop]: 4388 mSDtfsCounter, 5354 mSDsluCounter, 17256 mSDsCounter, 0 mSdLazyCounter, 3457 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5372 SdHoareTripleChecker+Valid, 21644 SdHoareTripleChecker+Invalid, 3518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-15 17:42:20,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5372 Valid, 21644 Invalid, 3518 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [61 Valid, 3457 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-15 17:42:20,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4319 states. [2023-12-15 17:42:20,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4319 to 3666. [2023-12-15 17:42:20,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3666 states, 3525 states have (on average 1.7699290780141843) internal successors, (6239), 3531 states have internal predecessors, (6239), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-12-15 17:42:20,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 6462 transitions. [2023-12-15 17:42:20,324 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 6462 transitions. Word has length 151 [2023-12-15 17:42:20,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:42:20,325 INFO L495 AbstractCegarLoop]: Abstraction has 3666 states and 6462 transitions. [2023-12-15 17:42:20,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 17:42:20,326 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 6462 transitions. [2023-12-15 17:42:20,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-15 17:42:20,327 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:42:20,327 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:42:20,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 17:42:20,328 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:42:20,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:42:20,328 INFO L85 PathProgramCache]: Analyzing trace with hash 380653805, now seen corresponding path program 1 times [2023-12-15 17:42:20,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:42:20,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380182537] [2023-12-15 17:42:20,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:42:20,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:42:20,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:20,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:42:20,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:20,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 17:42:20,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:20,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 17:42:20,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:20,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-15 17:42:20,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:20,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-15 17:42:20,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:20,563 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 17:42:20,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:42:20,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380182537] [2023-12-15 17:42:20,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380182537] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:42:20,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:42:20,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:42:20,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54424669] [2023-12-15 17:42:20,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:42:20,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:42:20,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:42:20,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:42:20,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:42:20,565 INFO L87 Difference]: Start difference. First operand 3666 states and 6462 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 17:42:22,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:42:22,288 INFO L93 Difference]: Finished difference Result 5837 states and 10091 transitions. [2023-12-15 17:42:22,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:42:22,289 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2023-12-15 17:42:22,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:42:22,303 INFO L225 Difference]: With dead ends: 5837 [2023-12-15 17:42:22,303 INFO L226 Difference]: Without dead ends: 4309 [2023-12-15 17:42:22,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:42:22,309 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 4957 mSDsluCounter, 16550 mSDsCounter, 0 mSdLazyCounter, 1769 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4976 SdHoareTripleChecker+Valid, 20742 SdHoareTripleChecker+Invalid, 1832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 17:42:22,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4976 Valid, 20742 Invalid, 1832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1769 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 17:42:22,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4309 states. [2023-12-15 17:42:22,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4309 to 3666. [2023-12-15 17:42:22,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3666 states, 3525 states have (on average 1.7685106382978724) internal successors, (6234), 3531 states have internal predecessors, (6234), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-12-15 17:42:22,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 6457 transitions. [2023-12-15 17:42:22,409 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 6457 transitions. Word has length 151 [2023-12-15 17:42:22,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:42:22,409 INFO L495 AbstractCegarLoop]: Abstraction has 3666 states and 6457 transitions. [2023-12-15 17:42:22,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 17:42:22,410 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 6457 transitions. [2023-12-15 17:42:22,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-15 17:42:22,411 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:42:22,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:42:22,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 17:42:22,412 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:42:22,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:42:22,412 INFO L85 PathProgramCache]: Analyzing trace with hash -204117845, now seen corresponding path program 1 times [2023-12-15 17:42:22,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:42:22,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531311520] [2023-12-15 17:42:22,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:42:22,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:42:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:22,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:42:22,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:22,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 17:42:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:22,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 17:42:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:22,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-15 17:42:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:22,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-15 17:42:22,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:22,693 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 17:42:22,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:42:22,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531311520] [2023-12-15 17:42:22,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531311520] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:42:22,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:42:22,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:42:22,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634331025] [2023-12-15 17:42:22,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:42:22,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:42:22,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:42:22,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:42:22,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:42:22,696 INFO L87 Difference]: Start difference. First operand 3666 states and 6457 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 17:42:24,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:42:24,047 INFO L93 Difference]: Finished difference Result 5831 states and 10065 transitions. [2023-12-15 17:42:24,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:42:24,047 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2023-12-15 17:42:24,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:42:24,073 INFO L225 Difference]: With dead ends: 5831 [2023-12-15 17:42:24,073 INFO L226 Difference]: Without dead ends: 4303 [2023-12-15 17:42:24,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:42:24,084 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 5096 mSDsluCounter, 12441 mSDsCounter, 0 mSdLazyCounter, 1581 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5115 SdHoareTripleChecker+Valid, 16633 SdHoareTripleChecker+Invalid, 1669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:42:24,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5115 Valid, 16633 Invalid, 1669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1581 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 17:42:24,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4303 states. [2023-12-15 17:42:24,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4303 to 3666. [2023-12-15 17:42:24,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3666 states, 3525 states have (on average 1.7670921985815602) internal successors, (6229), 3531 states have internal predecessors, (6229), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-12-15 17:42:24,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 6452 transitions. [2023-12-15 17:42:24,171 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 6452 transitions. Word has length 151 [2023-12-15 17:42:24,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:42:24,171 INFO L495 AbstractCegarLoop]: Abstraction has 3666 states and 6452 transitions. [2023-12-15 17:42:24,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 17:42:24,171 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 6452 transitions. [2023-12-15 17:42:24,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-15 17:42:24,173 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:42:24,173 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:42:24,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 17:42:24,173 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:42:24,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:42:24,173 INFO L85 PathProgramCache]: Analyzing trace with hash -638623443, now seen corresponding path program 1 times [2023-12-15 17:42:24,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:42:24,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169198743] [2023-12-15 17:42:24,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:42:24,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:42:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:24,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:42:24,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:24,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 17:42:24,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:24,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 17:42:24,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:24,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-15 17:42:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:24,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-15 17:42:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:24,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:42:24,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:42:24,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169198743] [2023-12-15 17:42:24,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169198743] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:42:24,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:42:24,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:42:24,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121578508] [2023-12-15 17:42:24,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:42:24,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:42:24,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:42:24,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:42:24,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:42:24,369 INFO L87 Difference]: Start difference. First operand 3666 states and 6452 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 17:42:25,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:42:25,979 INFO L93 Difference]: Finished difference Result 5824 states and 10037 transitions. [2023-12-15 17:42:25,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:42:25,979 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2023-12-15 17:42:25,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:42:25,990 INFO L225 Difference]: With dead ends: 5824 [2023-12-15 17:42:25,990 INFO L226 Difference]: Without dead ends: 4296 [2023-12-15 17:42:25,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:42:25,994 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 4958 mSDsluCounter, 16550 mSDsCounter, 0 mSdLazyCounter, 1732 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4977 SdHoareTripleChecker+Valid, 20742 SdHoareTripleChecker+Invalid, 1795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 17:42:25,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4977 Valid, 20742 Invalid, 1795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1732 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 17:42:25,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4296 states. [2023-12-15 17:42:26,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4296 to 3666. [2023-12-15 17:42:26,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3666 states, 3525 states have (on average 1.7656737588652482) internal successors, (6224), 3531 states have internal predecessors, (6224), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-12-15 17:42:26,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 6447 transitions. [2023-12-15 17:42:26,071 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 6447 transitions. Word has length 151 [2023-12-15 17:42:26,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:42:26,071 INFO L495 AbstractCegarLoop]: Abstraction has 3666 states and 6447 transitions. [2023-12-15 17:42:26,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 17:42:26,072 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 6447 transitions. [2023-12-15 17:42:26,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-15 17:42:26,073 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:42:26,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:42:26,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 17:42:26,073 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:42:26,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:42:26,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1068281749, now seen corresponding path program 1 times [2023-12-15 17:42:26,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:42:26,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99501680] [2023-12-15 17:42:26,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:42:26,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:42:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:26,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:42:26,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:26,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 17:42:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:26,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 17:42:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:26,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-15 17:42:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:26,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-15 17:42:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:26,255 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 17:42:26,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:42:26,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99501680] [2023-12-15 17:42:26,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99501680] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:42:26,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:42:26,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:42:26,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824064246] [2023-12-15 17:42:26,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:42:26,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:42:26,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:42:26,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:42:26,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:42:26,256 INFO L87 Difference]: Start difference. First operand 3666 states and 6447 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 17:42:27,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:42:27,894 INFO L93 Difference]: Finished difference Result 5812 states and 9999 transitions. [2023-12-15 17:42:27,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:42:27,894 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2023-12-15 17:42:27,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:42:27,904 INFO L225 Difference]: With dead ends: 5812 [2023-12-15 17:42:27,904 INFO L226 Difference]: Without dead ends: 4284 [2023-12-15 17:42:27,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:42:27,908 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 4955 mSDsluCounter, 16550 mSDsCounter, 0 mSdLazyCounter, 1708 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4974 SdHoareTripleChecker+Valid, 20742 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 17:42:27,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4974 Valid, 20742 Invalid, 1771 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 1708 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 17:42:27,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4284 states. [2023-12-15 17:42:27,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4284 to 3666. [2023-12-15 17:42:27,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3666 states, 3525 states have (on average 1.764255319148936) internal successors, (6219), 3531 states have internal predecessors, (6219), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-12-15 17:42:27,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 6442 transitions. [2023-12-15 17:42:27,995 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 6442 transitions. Word has length 151 [2023-12-15 17:42:27,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:42:27,995 INFO L495 AbstractCegarLoop]: Abstraction has 3666 states and 6442 transitions. [2023-12-15 17:42:27,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 17:42:27,995 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 6442 transitions. [2023-12-15 17:42:27,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-15 17:42:27,997 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:42:27,997 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:42:27,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 17:42:27,997 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:42:27,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:42:27,997 INFO L85 PathProgramCache]: Analyzing trace with hash -121243863, now seen corresponding path program 1 times [2023-12-15 17:42:27,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:42:27,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96567593] [2023-12-15 17:42:27,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:42:27,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:42:28,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:28,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:42:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:28,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 17:42:28,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:28,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 17:42:28,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:28,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-15 17:42:28,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:28,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-15 17:42:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:28,189 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 17:42:28,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:42:28,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96567593] [2023-12-15 17:42:28,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96567593] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:42:28,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:42:28,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:42:28,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107324313] [2023-12-15 17:42:28,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:42:28,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:42:28,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:42:28,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:42:28,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:42:28,191 INFO L87 Difference]: Start difference. First operand 3666 states and 6442 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 17:42:30,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:42:30,679 INFO L93 Difference]: Finished difference Result 7418 states and 12588 transitions. [2023-12-15 17:42:30,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 17:42:30,680 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2023-12-15 17:42:30,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:42:30,696 INFO L225 Difference]: With dead ends: 7418 [2023-12-15 17:42:30,696 INFO L226 Difference]: Without dead ends: 5890 [2023-12-15 17:42:30,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 17:42:30,718 INFO L413 NwaCegarLoop]: 4388 mSDtfsCounter, 5325 mSDsluCounter, 17256 mSDsCounter, 0 mSdLazyCounter, 3327 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5343 SdHoareTripleChecker+Valid, 21644 SdHoareTripleChecker+Invalid, 3388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-15 17:42:30,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5343 Valid, 21644 Invalid, 3388 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [61 Valid, 3327 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-15 17:42:30,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5890 states. [2023-12-15 17:42:30,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5890 to 4887. [2023-12-15 17:42:30,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4887 states, 4638 states have (on average 1.7231565329883571) internal successors, (7992), 4648 states have internal predecessors, (7992), 185 states have call successors, (185), 54 states have call predecessors, (185), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2023-12-15 17:42:30,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4887 states to 4887 states and 8397 transitions. [2023-12-15 17:42:30,951 INFO L78 Accepts]: Start accepts. Automaton has 4887 states and 8397 transitions. Word has length 151 [2023-12-15 17:42:30,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:42:30,951 INFO L495 AbstractCegarLoop]: Abstraction has 4887 states and 8397 transitions. [2023-12-15 17:42:30,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 17:42:30,960 INFO L276 IsEmpty]: Start isEmpty. Operand 4887 states and 8397 transitions. [2023-12-15 17:42:30,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-15 17:42:30,963 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:42:30,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:42:30,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 17:42:30,964 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:42:30,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:42:30,964 INFO L85 PathProgramCache]: Analyzing trace with hash 740589739, now seen corresponding path program 1 times [2023-12-15 17:42:30,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:42:30,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894159018] [2023-12-15 17:42:30,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:42:30,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:42:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:31,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:42:31,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:31,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 17:42:31,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:31,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 17:42:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:31,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-15 17:42:31,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:31,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-15 17:42:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:31,206 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 17:42:31,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:42:31,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894159018] [2023-12-15 17:42:31,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894159018] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:42:31,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:42:31,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:42:31,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068548390] [2023-12-15 17:42:31,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:42:31,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:42:31,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:42:31,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:42:31,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:42:31,207 INFO L87 Difference]: Start difference. First operand 4887 states and 8397 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 17:42:34,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:42:34,080 INFO L93 Difference]: Finished difference Result 11823 states and 19739 transitions. [2023-12-15 17:42:34,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 17:42:34,080 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2023-12-15 17:42:34,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:42:34,102 INFO L225 Difference]: With dead ends: 11823 [2023-12-15 17:42:34,102 INFO L226 Difference]: Without dead ends: 9074 [2023-12-15 17:42:34,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 17:42:34,112 INFO L413 NwaCegarLoop]: 4388 mSDtfsCounter, 5324 mSDsluCounter, 17256 mSDsCounter, 0 mSdLazyCounter, 3314 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5342 SdHoareTripleChecker+Valid, 21644 SdHoareTripleChecker+Invalid, 3375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:42:34,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5342 Valid, 21644 Invalid, 3375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 3314 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-15 17:42:34,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9074 states. [2023-12-15 17:42:34,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9074 to 7326. [2023-12-15 17:42:34,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7326 states, 6861 states have (on average 1.6802215420492639) internal successors, (11528), 6879 states have internal predecessors, (11528), 345 states have call successors, (345), 102 states have call predecessors, (345), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2023-12-15 17:42:34,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7326 states to 7326 states and 12315 transitions. [2023-12-15 17:42:34,297 INFO L78 Accepts]: Start accepts. Automaton has 7326 states and 12315 transitions. Word has length 151 [2023-12-15 17:42:34,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:42:34,297 INFO L495 AbstractCegarLoop]: Abstraction has 7326 states and 12315 transitions. [2023-12-15 17:42:34,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 17:42:34,297 INFO L276 IsEmpty]: Start isEmpty. Operand 7326 states and 12315 transitions. [2023-12-15 17:42:34,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-15 17:42:34,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:42:34,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:42:34,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 17:42:34,300 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:42:34,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:42:34,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1309819159, now seen corresponding path program 1 times [2023-12-15 17:42:34,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:42:34,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538073459] [2023-12-15 17:42:34,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:42:34,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:42:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:34,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:42:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:34,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 17:42:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:34,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 17:42:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:34,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-15 17:42:34,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:34,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-15 17:42:34,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:34,470 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 17:42:34,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:42:34,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538073459] [2023-12-15 17:42:34,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538073459] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:42:34,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:42:34,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:42:34,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492561193] [2023-12-15 17:42:34,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:42:34,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:42:34,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:42:34,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:42:34,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:42:34,472 INFO L87 Difference]: Start difference. First operand 7326 states and 12315 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 17:42:37,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:42:37,390 INFO L93 Difference]: Finished difference Result 20624 states and 34083 transitions. [2023-12-15 17:42:37,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 17:42:37,390 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2023-12-15 17:42:37,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:42:37,427 INFO L225 Difference]: With dead ends: 20624 [2023-12-15 17:42:37,427 INFO L226 Difference]: Without dead ends: 15436 [2023-12-15 17:42:37,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 17:42:37,443 INFO L413 NwaCegarLoop]: 4388 mSDtfsCounter, 5323 mSDsluCounter, 17256 mSDsCounter, 0 mSdLazyCounter, 3301 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5341 SdHoareTripleChecker+Valid, 21644 SdHoareTripleChecker+Invalid, 3362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-15 17:42:37,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5341 Valid, 21644 Invalid, 3362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 3301 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-15 17:42:37,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15436 states. [2023-12-15 17:42:37,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15436 to 12219. [2023-12-15 17:42:37,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12219 states, 11322 states have (on average 1.6447624094682918) internal successors, (18622), 11356 states have internal predecessors, (18622), 665 states have call successors, (665), 198 states have call predecessors, (665), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2023-12-15 17:42:37,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12219 states to 12219 states and 20227 transitions. [2023-12-15 17:42:37,786 INFO L78 Accepts]: Start accepts. Automaton has 12219 states and 20227 transitions. Word has length 151 [2023-12-15 17:42:37,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:42:37,787 INFO L495 AbstractCegarLoop]: Abstraction has 12219 states and 20227 transitions. [2023-12-15 17:42:37,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 17:42:37,787 INFO L276 IsEmpty]: Start isEmpty. Operand 12219 states and 20227 transitions. [2023-12-15 17:42:37,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-15 17:42:37,794 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:42:37,794 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:42:37,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 17:42:37,794 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:42:37,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:42:37,794 INFO L85 PathProgramCache]: Analyzing trace with hash -821772053, now seen corresponding path program 1 times [2023-12-15 17:42:37,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:42:37,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926498443] [2023-12-15 17:42:37,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:42:37,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:42:37,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:37,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:42:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:37,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 17:42:37,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:37,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 17:42:37,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:37,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-15 17:42:37,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:37,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-15 17:42:37,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:37,932 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 17:42:37,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:42:37,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926498443] [2023-12-15 17:42:37,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926498443] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:42:37,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:42:37,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:42:37,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484540271] [2023-12-15 17:42:37,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:42:37,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:42:37,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:42:37,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:42:37,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:42:37,934 INFO L87 Difference]: Start difference. First operand 12219 states and 20227 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 17:42:39,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:42:39,593 INFO L93 Difference]: Finished difference Result 25682 states and 42532 transitions. [2023-12-15 17:42:39,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:42:39,594 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2023-12-15 17:42:39,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:42:39,690 INFO L225 Difference]: With dead ends: 25682 [2023-12-15 17:42:39,690 INFO L226 Difference]: Without dead ends: 15601 [2023-12-15 17:42:39,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:42:39,736 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 4956 mSDsluCounter, 16550 mSDsCounter, 0 mSdLazyCounter, 1662 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4975 SdHoareTripleChecker+Valid, 20742 SdHoareTripleChecker+Invalid, 1725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:42:39,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4975 Valid, 20742 Invalid, 1725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1662 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 17:42:39,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15601 states. [2023-12-15 17:42:40,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15601 to 12219. [2023-12-15 17:42:40,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12219 states, 11322 states have (on average 1.641847730083024) internal successors, (18589), 11356 states have internal predecessors, (18589), 665 states have call successors, (665), 198 states have call predecessors, (665), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2023-12-15 17:42:40,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12219 states to 12219 states and 20194 transitions. [2023-12-15 17:42:40,137 INFO L78 Accepts]: Start accepts. Automaton has 12219 states and 20194 transitions. Word has length 151 [2023-12-15 17:42:40,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:42:40,138 INFO L495 AbstractCegarLoop]: Abstraction has 12219 states and 20194 transitions. [2023-12-15 17:42:40,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 17:42:40,138 INFO L276 IsEmpty]: Start isEmpty. Operand 12219 states and 20194 transitions. [2023-12-15 17:42:40,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-15 17:42:40,144 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:42:40,144 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:42:40,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 17:42:40,144 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:42:40,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:42:40,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1914407255, now seen corresponding path program 1 times [2023-12-15 17:42:40,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:42:40,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406716550] [2023-12-15 17:42:40,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:42:40,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:42:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:40,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:42:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:40,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 17:42:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:40,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 17:42:40,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:40,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-15 17:42:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:40,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-15 17:42:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:40,325 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 17:42:40,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:42:40,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406716550] [2023-12-15 17:42:40,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406716550] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:42:40,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:42:40,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:42:40,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184637727] [2023-12-15 17:42:40,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:42:40,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:42:40,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:42:40,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:42:40,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:42:40,327 INFO L87 Difference]: Start difference. First operand 12219 states and 20194 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 17:42:44,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:42:44,166 INFO L93 Difference]: Finished difference Result 42673 states and 69999 transitions. [2023-12-15 17:42:44,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 17:42:44,166 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2023-12-15 17:42:44,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:42:44,256 INFO L225 Difference]: With dead ends: 42673 [2023-12-15 17:42:44,256 INFO L226 Difference]: Without dead ends: 32592 [2023-12-15 17:42:44,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 17:42:44,288 INFO L413 NwaCegarLoop]: 4386 mSDtfsCounter, 5714 mSDsluCounter, 17251 mSDsCounter, 0 mSdLazyCounter, 3253 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5744 SdHoareTripleChecker+Valid, 21637 SdHoareTripleChecker+Invalid, 3317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-15 17:42:44,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5744 Valid, 21637 Invalid, 3317 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 3253 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-15 17:42:44,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32592 states. [2023-12-15 17:42:45,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32592 to 22005. [2023-12-15 17:42:45,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22005 states, 20276 states have (on average 1.617330834484119) internal successors, (32793), 20342 states have internal predecessors, (32793), 1273 states have call successors, (1273), 390 states have call predecessors, (1273), 454 states have return successors, (2066), 1336 states have call predecessors, (2066), 1273 states have call successors, (2066) [2023-12-15 17:42:45,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22005 states to 22005 states and 36132 transitions. [2023-12-15 17:42:45,203 INFO L78 Accepts]: Start accepts. Automaton has 22005 states and 36132 transitions. Word has length 151 [2023-12-15 17:42:45,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:42:45,204 INFO L495 AbstractCegarLoop]: Abstraction has 22005 states and 36132 transitions. [2023-12-15 17:42:45,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 17:42:45,204 INFO L276 IsEmpty]: Start isEmpty. Operand 22005 states and 36132 transitions. [2023-12-15 17:42:45,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-15 17:42:45,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:42:45,214 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:42:45,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 17:42:45,215 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:42:45,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:42:45,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1098387755, now seen corresponding path program 1 times [2023-12-15 17:42:45,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:42:45,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250167923] [2023-12-15 17:42:45,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:42:45,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:42:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:45,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:42:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:45,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 17:42:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:45,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 17:42:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:45,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-15 17:42:45,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:45,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-15 17:42:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:45,396 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 17:42:45,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:42:45,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250167923] [2023-12-15 17:42:45,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250167923] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:42:45,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:42:45,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:42:45,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260085436] [2023-12-15 17:42:45,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:42:45,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:42:45,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:42:45,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:42:45,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:42:45,398 INFO L87 Difference]: Start difference. First operand 22005 states and 36132 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 17:42:49,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:42:49,963 INFO L93 Difference]: Finished difference Result 81465 states and 133999 transitions. [2023-12-15 17:42:49,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 17:42:49,964 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2023-12-15 17:42:49,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:42:50,111 INFO L225 Difference]: With dead ends: 81465 [2023-12-15 17:42:50,111 INFO L226 Difference]: Without dead ends: 61598 [2023-12-15 17:42:50,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 17:42:50,149 INFO L413 NwaCegarLoop]: 4385 mSDtfsCounter, 5411 mSDsluCounter, 17248 mSDsCounter, 0 mSdLazyCounter, 3855 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5428 SdHoareTripleChecker+Valid, 21633 SdHoareTripleChecker+Invalid, 3918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-15 17:42:50,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5428 Valid, 21633 Invalid, 3918 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 3855 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-15 17:42:50,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61598 states. [2023-12-15 17:42:51,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61598 to 41254. [2023-12-15 17:42:51,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41254 states, 37893 states have (on average 1.603119309635025) internal successors, (60747), 38023 states have internal predecessors, (60747), 2457 states have call successors, (2457), 774 states have call predecessors, (2457), 902 states have return successors, (4772), 2584 states have call predecessors, (4772), 2457 states have call successors, (4772) [2023-12-15 17:42:51,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41254 states to 41254 states and 67976 transitions. [2023-12-15 17:42:51,746 INFO L78 Accepts]: Start accepts. Automaton has 41254 states and 67976 transitions. Word has length 151 [2023-12-15 17:42:51,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:42:51,746 INFO L495 AbstractCegarLoop]: Abstraction has 41254 states and 67976 transitions. [2023-12-15 17:42:51,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 17:42:51,746 INFO L276 IsEmpty]: Start isEmpty. Operand 41254 states and 67976 transitions. [2023-12-15 17:42:51,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-15 17:42:51,765 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:42:51,765 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:42:51,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 17:42:51,765 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:42:51,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:42:51,766 INFO L85 PathProgramCache]: Analyzing trace with hash -744087959, now seen corresponding path program 1 times [2023-12-15 17:42:51,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:42:51,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925489440] [2023-12-15 17:42:51,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:42:51,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:42:51,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:51,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:42:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:51,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 17:42:51,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:51,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 17:42:51,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:51,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-15 17:42:51,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:51,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-15 17:42:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:51,929 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 17:42:51,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:42:51,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925489440] [2023-12-15 17:42:51,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925489440] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:42:51,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:42:51,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:42:51,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162950864] [2023-12-15 17:42:51,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:42:51,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:42:51,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:42:51,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:42:51,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:42:51,931 INFO L87 Difference]: Start difference. First operand 41254 states and 67976 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) Received shutdown request... [2023-12-15 17:42:55,454 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 17:42:55,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 17:42:55,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 17:42:55,456 INFO L413 NwaCegarLoop]: 649 mSDtfsCounter, 1580 mSDsluCounter, 2500 mSDsCounter, 0 mSdLazyCounter, 2112 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1584 SdHoareTripleChecker+Valid, 3149 SdHoareTripleChecker+Invalid, 2152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 17:42:55,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1584 Valid, 3149 Invalid, 2152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2112 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 17:42:55,457 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-15 17:42:55,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 17:42:55,458 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (41254states) and FLOYD_HOARE automaton (currently 15 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (59840 states constructed, input type IntersectNwa). [2023-12-15 17:42:55,459 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-15 17:42:55,461 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:42:55,466 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 17:42:55,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 05:42:55 BoogieIcfgContainer [2023-12-15 17:42:55,467 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 17:42:55,468 INFO L158 Benchmark]: Toolchain (without parser) took 56229.44ms. Allocated memory was 241.2MB in the beginning and 2.1GB in the end (delta: 1.8GB). Free memory was 150.7MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2023-12-15 17:42:55,468 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 196.1MB. Free memory is still 141.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 17:42:55,468 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2111.52ms. Allocated memory was 241.2MB in the beginning and 366.0MB in the end (delta: 124.8MB). Free memory was 150.1MB in the beginning and 256.6MB in the end (delta: -106.5MB). Peak memory consumption was 110.5MB. Max. memory is 8.0GB. [2023-12-15 17:42:55,468 INFO L158 Benchmark]: Boogie Procedure Inliner took 319.99ms. Allocated memory is still 366.0MB. Free memory was 256.6MB in the beginning and 176.5MB in the end (delta: 80.1MB). Peak memory consumption was 78.6MB. Max. memory is 8.0GB. [2023-12-15 17:42:55,468 INFO L158 Benchmark]: Boogie Preprocessor took 592.89ms. Allocated memory is still 366.0MB. Free memory was 176.5MB in the beginning and 173.3MB in the end (delta: 3.1MB). Peak memory consumption was 63.4MB. Max. memory is 8.0GB. [2023-12-15 17:42:55,468 INFO L158 Benchmark]: RCFGBuilder took 5524.61ms. Allocated memory was 366.0MB in the beginning and 1.1GB in the end (delta: 701.5MB). Free memory was 173.3MB in the beginning and 530.4MB in the end (delta: -357.0MB). Peak memory consumption was 345.0MB. Max. memory is 8.0GB. [2023-12-15 17:42:55,469 INFO L158 Benchmark]: TraceAbstraction took 47674.91ms. Allocated memory was 1.1GB in the beginning and 2.1GB in the end (delta: 1.0GB). Free memory was 529.8MB in the beginning and 1.3GB in the end (delta: -810.6MB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2023-12-15 17:42:55,470 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 196.1MB. Free memory is still 141.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 2111.52ms. Allocated memory was 241.2MB in the beginning and 366.0MB in the end (delta: 124.8MB). Free memory was 150.1MB in the beginning and 256.6MB in the end (delta: -106.5MB). Peak memory consumption was 110.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 319.99ms. Allocated memory is still 366.0MB. Free memory was 256.6MB in the beginning and 176.5MB in the end (delta: 80.1MB). Peak memory consumption was 78.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 592.89ms. Allocated memory is still 366.0MB. Free memory was 176.5MB in the beginning and 173.3MB in the end (delta: 3.1MB). Peak memory consumption was 63.4MB. Max. memory is 8.0GB. * RCFGBuilder took 5524.61ms. Allocated memory was 366.0MB in the beginning and 1.1GB in the end (delta: 701.5MB). Free memory was 173.3MB in the beginning and 530.4MB in the end (delta: -357.0MB). Peak memory consumption was 345.0MB. Max. memory is 8.0GB. * TraceAbstraction took 47674.91ms. Allocated memory was 1.1GB in the beginning and 2.1GB in the end (delta: 1.0GB). Free memory was 529.8MB in the beginning and 1.3GB in the end (delta: -810.6MB). Peak memory consumption was 1.1GB. 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: 11173]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 11173). Cancelled while NwaCegarLoop was constructing difference of abstraction (41254states) and FLOYD_HOARE automaton (currently 15 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (59840 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 10986]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 10986). Cancelled while NwaCegarLoop was constructing difference of abstraction (41254states) and FLOYD_HOARE automaton (currently 15 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (59840 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 2448 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 47.5s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 39.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 70813 SdHoareTripleChecker+Valid, 25.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 70536 mSDsluCounter, 287613 SdHoareTripleChecker+Invalid, 22.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 226801 mSDsCounter, 968 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37699 IncrementalHoareTripleChecker+Invalid, 38667 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 968 mSolverCounterUnsat, 60812 mSDtfsCounter, 37699 mSolverCounterSat, 0.8s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 369 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 8.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41254occurred in iteration=14, InterpolantAutomatonStates: 151, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.4s AutomataMinimizationTime, 14 MinimizatonAttempts, 44222 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 2265 NumberOfCodeBlocks, 2265 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 2250 ConstructedInterpolants, 0 QuantifiedInterpolants, 6711 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 0/0 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