/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/Problem05_label43+token_ring.12.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 11:26:19,152 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 11:26:19,237 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 11:26:19,241 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 11:26:19,242 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 11:26:19,268 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 11:26:19,269 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 11:26:19,269 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 11:26:19,270 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 11:26:19,274 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 11:26:19,274 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 11:26:19,274 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 11:26:19,275 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 11:26:19,276 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 11:26:19,276 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 11:26:19,276 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 11:26:19,276 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 11:26:19,277 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 11:26:19,277 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 11:26:19,278 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 11:26:19,278 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 11:26:19,279 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 11:26:19,279 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 11:26:19,279 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 11:26:19,279 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 11:26:19,280 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 11:26:19,280 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 11:26:19,280 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 11:26:19,281 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 11:26:19,281 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 11:26:19,282 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 11:26:19,282 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 11:26:19,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 11:26:19,282 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 11:26:19,282 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 11:26:19,283 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 11:26:19,283 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 11:26:19,283 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 11:26:19,283 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 11:26:19,283 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 11:26:19,284 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 11:26:19,284 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 11:26:19,284 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 11:26:19,284 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 11:26:19,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 11:26:19,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 11:26:19,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 11:26:19,545 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 11:26:19,545 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 11:26:19,546 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label43+token_ring.12.cil-1.c [2023-12-20 11:26:20,753 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 11:26:21,398 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 11:26:21,399 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.12.cil-1.c [2023-12-20 11:26:21,444 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79dd7db1d/3177a2b5075444eca7f6a815499730e2/FLAGfabad08fe [2023-12-20 11:26:21,460 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79dd7db1d/3177a2b5075444eca7f6a815499730e2 [2023-12-20 11:26:21,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 11:26:21,463 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 11:26:21,466 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 11:26:21,466 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 11:26:21,470 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 11:26:21,471 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 11:26:21" (1/1) ... [2023-12-20 11:26:21,472 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ef0748 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:21, skipping insertion in model container [2023-12-20 11:26:21,473 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 11:26:21" (1/1) ... [2023-12-20 11:26:21,672 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 11:26:23,327 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_label43+token_ring.12.cil-1.c[381679,381692] [2023-12-20 11:26:23,352 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_label43+token_ring.12.cil-1.c[383339,383352] [2023-12-20 11:26:23,643 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 11:26:23,658 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 11:26:24,434 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_label43+token_ring.12.cil-1.c[381679,381692] [2023-12-20 11:26:24,441 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_label43+token_ring.12.cil-1.c[383339,383352] [2023-12-20 11:26:24,479 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 11:26:24,540 INFO L206 MainTranslator]: Completed translation [2023-12-20 11:26:24,540 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:24 WrapperNode [2023-12-20 11:26:24,540 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 11:26:24,542 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 11:26:24,542 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 11:26:24,542 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 11:26:24,549 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:24" (1/1) ... [2023-12-20 11:26:24,643 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:24" (1/1) ... [2023-12-20 11:26:25,047 INFO L138 Inliner]: procedures = 68, calls = 78, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 13239 [2023-12-20 11:26:25,047 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 11:26:25,048 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 11:26:25,048 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 11:26:25,048 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 11:26:25,059 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:24" (1/1) ... [2023-12-20 11:26:25,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:24" (1/1) ... [2023-12-20 11:26:25,169 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:24" (1/1) ... [2023-12-20 11:26:25,261 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]. [2023-12-20 11:26:25,261 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:24" (1/1) ... [2023-12-20 11:26:25,262 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:24" (1/1) ... [2023-12-20 11:26:25,484 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:24" (1/1) ... [2023-12-20 11:26:25,603 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:24" (1/1) ... [2023-12-20 11:26:25,634 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:24" (1/1) ... [2023-12-20 11:26:25,655 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:24" (1/1) ... [2023-12-20 11:26:25,747 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 11:26:25,748 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 11:26:25,749 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 11:26:25,749 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 11:26:25,750 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:24" (1/1) ... [2023-12-20 11:26:25,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 11:26:25,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:26:25,777 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) [2023-12-20 11:26:25,799 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 [2023-12-20 11:26:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 11:26:25,807 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-20 11:26:25,807 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-20 11:26:25,807 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-20 11:26:25,807 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-20 11:26:25,807 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-20 11:26:25,807 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-20 11:26:25,807 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-20 11:26:25,807 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-20 11:26:25,807 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-20 11:26:25,808 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-20 11:26:25,808 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-20 11:26:25,809 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-20 11:26:25,809 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-20 11:26:25,809 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-20 11:26:25,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 11:26:25,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 11:26:25,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 11:26:25,928 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 11:26:25,930 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 11:26:33,231 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 11:26:33,332 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 11:26:33,332 INFO L309 CfgBuilder]: Removed 16 assume(true) statements. [2023-12-20 11:26:33,333 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 11:26:33 BoogieIcfgContainer [2023-12-20 11:26:33,333 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 11:26:33,335 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 11:26:33,336 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 11:26:33,338 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 11:26:33,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 11:26:21" (1/3) ... [2023-12-20 11:26:33,339 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20c1ae4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 11:26:33, skipping insertion in model container [2023-12-20 11:26:33,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:24" (2/3) ... [2023-12-20 11:26:33,340 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20c1ae4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 11:26:33, skipping insertion in model container [2023-12-20 11:26:33,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 11:26:33" (3/3) ... [2023-12-20 11:26:33,341 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.12.cil-1.c [2023-12-20 11:26:33,355 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 11:26:33,356 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 11:26:33,445 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 11:26:33,451 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;@5340820, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 11:26:33,451 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 11:26:33,464 INFO L276 IsEmpty]: Start isEmpty. Operand has 2479 states, 2441 states have (on average 1.8758705448586646) internal successors, (4579), 2446 states have internal predecessors, (4579), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-20 11:26:33,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:26:33,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:26:33,482 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:26:33,483 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:26:33,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:26:33,486 INFO L85 PathProgramCache]: Analyzing trace with hash 255000413, now seen corresponding path program 1 times [2023-12-20 11:26:33,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:26:33,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745876346] [2023-12-20 11:26:33,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:26:33,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:26:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:33,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:26:33,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:33,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:26:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:33,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:26:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:34,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:26:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:34,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:26:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:34,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:26:34,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:26:34,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745876346] [2023-12-20 11:26:34,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745876346] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:26:34,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:26:34,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 11:26:34,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885267637] [2023-12-20 11:26:34,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:26:34,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 11:26:34,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:26:34,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 11:26:34,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 11:26:34,092 INFO L87 Difference]: Start difference. First operand has 2479 states, 2441 states have (on average 1.8758705448586646) internal successors, (4579), 2446 states have internal predecessors, (4579), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:26:36,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:26:36,326 INFO L93 Difference]: Finished difference Result 5083 states and 9494 transitions. [2023-12-20 11:26:36,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 11:26:36,329 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 11:26:36,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:26:36,364 INFO L225 Difference]: With dead ends: 5083 [2023-12-20 11:26:36,364 INFO L226 Difference]: Without dead ends: 2604 [2023-12-20 11:26:36,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 11:26:36,382 INFO L413 NwaCegarLoop]: 4268 mSDtfsCounter, 993 mSDsluCounter, 12222 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 16490 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 11:26:36,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1017 Valid, 16490 Invalid, 1131 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 11:26:36,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2023-12-20 11:26:36,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 2474. [2023-12-20 11:26:36,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2474 states, 2438 states have (on average 1.8371616078753077) internal successors, (4479), 2441 states have internal predecessors, (4479), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-20 11:26:36,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 4533 transitions. [2023-12-20 11:26:36,557 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 4533 transitions. Word has length 162 [2023-12-20 11:26:36,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:26:36,557 INFO L495 AbstractCegarLoop]: Abstraction has 2474 states and 4533 transitions. [2023-12-20 11:26:36,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:26:36,559 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 4533 transitions. [2023-12-20 11:26:36,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:26:36,568 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:26:36,569 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:26:36,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 11:26:36,569 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:26:36,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:26:36,570 INFO L85 PathProgramCache]: Analyzing trace with hash 2024472027, now seen corresponding path program 1 times [2023-12-20 11:26:36,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:26:36,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725927169] [2023-12-20 11:26:36,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:26:36,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:26:36,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:36,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:26:36,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:36,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:26:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:36,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:26:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:36,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:26:36,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:36,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:26:36,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:36,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:26:36,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:26:36,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725927169] [2023-12-20 11:26:36,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725927169] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:26:36,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:26:36,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:26:36,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245396296] [2023-12-20 11:26:36,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:26:36,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:26:36,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:26:36,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:26:36,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:26:36,933 INFO L87 Difference]: Start difference. First operand 2474 states and 4533 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:26:39,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:26:39,868 INFO L93 Difference]: Finished difference Result 2986 states and 5400 transitions. [2023-12-20 11:26:39,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 11:26:39,868 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 11:26:39,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:26:39,882 INFO L225 Difference]: With dead ends: 2986 [2023-12-20 11:26:39,883 INFO L226 Difference]: Without dead ends: 2646 [2023-12-20 11:26:39,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-12-20 11:26:39,887 INFO L413 NwaCegarLoop]: 4264 mSDtfsCounter, 1153 mSDsluCounter, 20651 mSDsCounter, 0 mSdLazyCounter, 2093 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 24915 SdHoareTripleChecker+Invalid, 2156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 11:26:39,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1180 Valid, 24915 Invalid, 2156 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 2093 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 11:26:39,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2023-12-20 11:26:39,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 2476. [2023-12-20 11:26:39,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2476 states, 2440 states have (on average 1.8360655737704918) internal successors, (4480), 2443 states have internal predecessors, (4480), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-20 11:26:39,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2476 states to 2476 states and 4534 transitions. [2023-12-20 11:26:39,958 INFO L78 Accepts]: Start accepts. Automaton has 2476 states and 4534 transitions. Word has length 162 [2023-12-20 11:26:39,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:26:39,959 INFO L495 AbstractCegarLoop]: Abstraction has 2476 states and 4534 transitions. [2023-12-20 11:26:39,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:26:39,960 INFO L276 IsEmpty]: Start isEmpty. Operand 2476 states and 4534 transitions. [2023-12-20 11:26:39,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:26:39,962 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:26:39,963 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:26:39,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 11:26:39,964 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:26:39,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:26:39,964 INFO L85 PathProgramCache]: Analyzing trace with hash 932380055, now seen corresponding path program 1 times [2023-12-20 11:26:39,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:26:39,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084527788] [2023-12-20 11:26:39,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:26:39,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:26:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:40,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:26:40,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:40,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:26:40,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:40,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:26:40,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:40,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:26:40,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:40,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:26:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:40,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:26:40,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:26:40,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084527788] [2023-12-20 11:26:40,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084527788] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:26:40,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:26:40,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 11:26:40,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648839016] [2023-12-20 11:26:40,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:26:40,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 11:26:40,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:26:40,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 11:26:40,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 11:26:40,266 INFO L87 Difference]: Start difference. First operand 2476 states and 4534 transitions. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:26:43,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:26:43,318 INFO L93 Difference]: Finished difference Result 3433 states and 6132 transitions. [2023-12-20 11:26:43,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 11:26:43,319 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 11:26:43,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:26:43,332 INFO L225 Difference]: With dead ends: 3433 [2023-12-20 11:26:43,332 INFO L226 Difference]: Without dead ends: 3096 [2023-12-20 11:26:43,334 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 [2023-12-20 11:26:43,335 INFO L413 NwaCegarLoop]: 4283 mSDtfsCounter, 5449 mSDsluCounter, 12796 mSDsCounter, 0 mSdLazyCounter, 2352 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5468 SdHoareTripleChecker+Valid, 17079 SdHoareTripleChecker+Invalid, 2468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 11:26:43,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5468 Valid, 17079 Invalid, 2468 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [116 Valid, 2352 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 11:26:43,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3096 states. [2023-12-20 11:26:43,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3096 to 2831. [2023-12-20 11:26:43,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2831 states, 2767 states have (on average 1.8142392482833394) internal successors, (5020), 2771 states have internal predecessors, (5020), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2023-12-20 11:26:43,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2831 states to 2831 states and 5119 transitions. [2023-12-20 11:26:43,422 INFO L78 Accepts]: Start accepts. Automaton has 2831 states and 5119 transitions. Word has length 162 [2023-12-20 11:26:43,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:26:43,423 INFO L495 AbstractCegarLoop]: Abstraction has 2831 states and 5119 transitions. [2023-12-20 11:26:43,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:26:43,423 INFO L276 IsEmpty]: Start isEmpty. Operand 2831 states and 5119 transitions. [2023-12-20 11:26:43,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:26:43,425 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:26:43,425 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:26:43,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 11:26:43,426 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:26:43,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:26:43,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1272988329, now seen corresponding path program 1 times [2023-12-20 11:26:43,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:26:43,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102917708] [2023-12-20 11:26:43,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:26:43,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:26:43,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:43,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:26:43,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:43,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:26:43,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:43,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:26:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:43,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:26:43,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:43,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:26:43,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:43,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:26:43,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:26:43,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102917708] [2023-12-20 11:26:43,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102917708] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:26:43,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:26:43,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:26:43,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401580432] [2023-12-20 11:26:43,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:26:43,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:26:43,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:26:43,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:26:43,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:26:43,723 INFO L87 Difference]: Start difference. First operand 2831 states and 5119 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:26:47,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:26:47,698 INFO L93 Difference]: Finished difference Result 4294 states and 7564 transitions. [2023-12-20 11:26:47,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:26:47,705 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 11:26:47,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:26:47,726 INFO L225 Difference]: With dead ends: 4294 [2023-12-20 11:26:47,727 INFO L226 Difference]: Without dead ends: 3602 [2023-12-20 11:26:47,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 11:26:47,742 INFO L413 NwaCegarLoop]: 4441 mSDtfsCounter, 5484 mSDsluCounter, 17441 mSDsCounter, 0 mSdLazyCounter, 3740 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5503 SdHoareTripleChecker+Valid, 21882 SdHoareTripleChecker+Invalid, 3805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-20 11:26:47,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5503 Valid, 21882 Invalid, 3805 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 3740 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-20 11:26:47,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3602 states. [2023-12-20 11:26:47,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3602 to 3159. [2023-12-20 11:26:47,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3159 states, 3067 states have (on average 1.7952396478643626) internal successors, (5506), 3072 states have internal predecessors, (5506), 70 states have call successors, (70), 19 states have call predecessors, (70), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2023-12-20 11:26:47,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3159 states to 3159 states and 5649 transitions. [2023-12-20 11:26:47,897 INFO L78 Accepts]: Start accepts. Automaton has 3159 states and 5649 transitions. Word has length 162 [2023-12-20 11:26:47,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:26:47,897 INFO L495 AbstractCegarLoop]: Abstraction has 3159 states and 5649 transitions. [2023-12-20 11:26:47,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:26:47,897 INFO L276 IsEmpty]: Start isEmpty. Operand 3159 states and 5649 transitions. [2023-12-20 11:26:47,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:26:47,900 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:26:47,900 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:26:47,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 11:26:47,900 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:26:47,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:26:47,901 INFO L85 PathProgramCache]: Analyzing trace with hash -862377963, now seen corresponding path program 1 times [2023-12-20 11:26:47,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:26:47,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562919129] [2023-12-20 11:26:47,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:26:47,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:26:47,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:48,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:26:48,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:48,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:26:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:48,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:26:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:48,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:26:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:48,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:26:48,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:48,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:26:48,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:26:48,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562919129] [2023-12-20 11:26:48,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562919129] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:26:48,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:26:48,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:26:48,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964253937] [2023-12-20 11:26:48,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:26:48,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:26:48,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:26:48,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:26:48,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:26:48,234 INFO L87 Difference]: Start difference. First operand 3159 states and 5649 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:26:51,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:26:51,700 INFO L93 Difference]: Finished difference Result 5557 states and 9650 transitions. [2023-12-20 11:26:51,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:26:51,700 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 11:26:51,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:26:51,726 INFO L225 Difference]: With dead ends: 5557 [2023-12-20 11:26:51,726 INFO L226 Difference]: Without dead ends: 4537 [2023-12-20 11:26:51,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 11:26:51,732 INFO L413 NwaCegarLoop]: 4241 mSDtfsCounter, 5596 mSDsluCounter, 16898 mSDsCounter, 0 mSdLazyCounter, 3099 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5615 SdHoareTripleChecker+Valid, 21139 SdHoareTripleChecker+Invalid, 3206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 3099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 11:26:51,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5615 Valid, 21139 Invalid, 3206 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [107 Valid, 3099 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 11:26:51,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4537 states. [2023-12-20 11:26:51,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4537 to 3816. [2023-12-20 11:26:51,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3816 states, 3668 states have (on average 1.7663576881134133) internal successors, (6479), 3675 states have internal predecessors, (6479), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2023-12-20 11:26:51,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3816 states to 3816 states and 6714 transitions. [2023-12-20 11:26:51,877 INFO L78 Accepts]: Start accepts. Automaton has 3816 states and 6714 transitions. Word has length 162 [2023-12-20 11:26:51,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:26:51,878 INFO L495 AbstractCegarLoop]: Abstraction has 3816 states and 6714 transitions. [2023-12-20 11:26:51,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:26:51,878 INFO L276 IsEmpty]: Start isEmpty. Operand 3816 states and 6714 transitions. [2023-12-20 11:26:51,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:26:51,880 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:26:51,880 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:26:51,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 11:26:51,881 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:26:51,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:26:51,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1644719511, now seen corresponding path program 1 times [2023-12-20 11:26:51,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:26:51,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984378127] [2023-12-20 11:26:51,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:26:51,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:26:51,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:51,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:26:51,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:52,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:26:52,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:52,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:26:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:52,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:26:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:52,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:26:52,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:52,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:26:52,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:26:52,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984378127] [2023-12-20 11:26:52,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984378127] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:26:52,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:26:52,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:26:52,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217740434] [2023-12-20 11:26:52,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:26:52,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:26:52,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:26:52,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:26:52,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:26:52,180 INFO L87 Difference]: Start difference. First operand 3816 states and 6714 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:26:54,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:26:54,327 INFO L93 Difference]: Finished difference Result 6202 states and 10706 transitions. [2023-12-20 11:26:54,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:26:54,328 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 11:26:54,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:26:54,350 INFO L225 Difference]: With dead ends: 6202 [2023-12-20 11:26:54,350 INFO L226 Difference]: Without dead ends: 4525 [2023-12-20 11:26:54,356 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 [2023-12-20 11:26:54,357 INFO L413 NwaCegarLoop]: 4219 mSDtfsCounter, 5053 mSDsluCounter, 16637 mSDsCounter, 0 mSdLazyCounter, 1908 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5073 SdHoareTripleChecker+Valid, 20856 SdHoareTripleChecker+Invalid, 1977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 11:26:54,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5073 Valid, 20856 Invalid, 1977 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 1908 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 11:26:54,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4525 states. [2023-12-20 11:26:54,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4525 to 3816. [2023-12-20 11:26:54,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3816 states, 3668 states have (on average 1.7649945474372954) internal successors, (6474), 3675 states have internal predecessors, (6474), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2023-12-20 11:26:54,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3816 states to 3816 states and 6709 transitions. [2023-12-20 11:26:54,499 INFO L78 Accepts]: Start accepts. Automaton has 3816 states and 6709 transitions. Word has length 162 [2023-12-20 11:26:54,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:26:54,500 INFO L495 AbstractCegarLoop]: Abstraction has 3816 states and 6709 transitions. [2023-12-20 11:26:54,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:26:54,501 INFO L276 IsEmpty]: Start isEmpty. Operand 3816 states and 6709 transitions. [2023-12-20 11:26:54,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:26:54,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:26:54,503 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:26:54,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 11:26:54,503 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:26:54,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:26:54,504 INFO L85 PathProgramCache]: Analyzing trace with hash -491163691, now seen corresponding path program 1 times [2023-12-20 11:26:54,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:26:54,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668146344] [2023-12-20 11:26:54,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:26:54,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:26:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:54,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:26:54,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:54,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:26:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:54,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:26:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:54,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:26:54,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:54,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:26:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:54,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:26:54,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:26:54,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668146344] [2023-12-20 11:26:54,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668146344] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:26:54,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:26:54,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:26:54,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084228412] [2023-12-20 11:26:54,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:26:54,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:26:54,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:26:54,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:26:54,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:26:54,779 INFO L87 Difference]: Start difference. First operand 3816 states and 6709 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:26:56,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:26:56,652 INFO L93 Difference]: Finished difference Result 6191 states and 10670 transitions. [2023-12-20 11:26:56,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:26:56,653 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 11:26:56,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:26:56,672 INFO L225 Difference]: With dead ends: 6191 [2023-12-20 11:26:56,672 INFO L226 Difference]: Without dead ends: 4514 [2023-12-20 11:26:56,679 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 [2023-12-20 11:26:56,680 INFO L413 NwaCegarLoop]: 4219 mSDtfsCounter, 5050 mSDsluCounter, 16637 mSDsCounter, 0 mSdLazyCounter, 1884 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5070 SdHoareTripleChecker+Valid, 20856 SdHoareTripleChecker+Invalid, 1953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 11:26:56,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5070 Valid, 20856 Invalid, 1953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1884 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 11:26:56,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4514 states. [2023-12-20 11:26:56,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4514 to 3816. [2023-12-20 11:26:56,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3816 states, 3668 states have (on average 1.7636314067611778) internal successors, (6469), 3675 states have internal predecessors, (6469), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2023-12-20 11:26:56,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3816 states to 3816 states and 6704 transitions. [2023-12-20 11:26:56,805 INFO L78 Accepts]: Start accepts. Automaton has 3816 states and 6704 transitions. Word has length 162 [2023-12-20 11:26:56,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:26:56,806 INFO L495 AbstractCegarLoop]: Abstraction has 3816 states and 6704 transitions. [2023-12-20 11:26:56,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:26:56,806 INFO L276 IsEmpty]: Start isEmpty. Operand 3816 states and 6704 transitions. [2023-12-20 11:26:56,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:26:56,808 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:26:56,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:26:56,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 11:26:56,809 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:26:56,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:26:56,809 INFO L85 PathProgramCache]: Analyzing trace with hash -73274989, now seen corresponding path program 1 times [2023-12-20 11:26:56,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:26:56,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427403043] [2023-12-20 11:26:56,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:26:56,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:26:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:56,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:26:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:57,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:26:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:57,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:26:57,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:57,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:26:57,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:57,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:26:57,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:26:57,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:26:57,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:26:57,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427403043] [2023-12-20 11:26:57,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427403043] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:26:57,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:26:57,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:26:57,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621422650] [2023-12-20 11:26:57,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:26:57,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:26:57,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:26:57,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:26:57,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:26:57,127 INFO L87 Difference]: Start difference. First operand 3816 states and 6704 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:00,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:00,911 INFO L93 Difference]: Finished difference Result 7961 states and 13549 transitions. [2023-12-20 11:27:00,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:27:00,912 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 11:27:00,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:27:00,941 INFO L225 Difference]: With dead ends: 7961 [2023-12-20 11:27:00,942 INFO L226 Difference]: Without dead ends: 6284 [2023-12-20 11:27:00,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 11:27:00,950 INFO L413 NwaCegarLoop]: 4439 mSDtfsCounter, 5467 mSDsluCounter, 17441 mSDsCounter, 0 mSdLazyCounter, 3661 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5486 SdHoareTripleChecker+Valid, 21880 SdHoareTripleChecker+Invalid, 3728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 11:27:00,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5486 Valid, 21880 Invalid, 3728 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 3661 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 11:27:00,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6284 states. [2023-12-20 11:27:01,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6284 to 5145. [2023-12-20 11:27:01,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5145 states, 4885 states have (on average 1.7252814738996929) internal successors, (8428), 4896 states have internal predecessors, (8428), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2023-12-20 11:27:01,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5145 states to 5145 states and 8853 transitions. [2023-12-20 11:27:01,146 INFO L78 Accepts]: Start accepts. Automaton has 5145 states and 8853 transitions. Word has length 162 [2023-12-20 11:27:01,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:27:01,148 INFO L495 AbstractCegarLoop]: Abstraction has 5145 states and 8853 transitions. [2023-12-20 11:27:01,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:01,148 INFO L276 IsEmpty]: Start isEmpty. Operand 5145 states and 8853 transitions. [2023-12-20 11:27:01,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:27:01,152 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:27:01,152 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:27:01,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 11:27:01,153 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:27:01,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:27:01,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1325678613, now seen corresponding path program 1 times [2023-12-20 11:27:01,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:27:01,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621754869] [2023-12-20 11:27:01,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:27:01,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:27:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:01,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:27:01,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:01,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:27:01,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:01,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:27:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:01,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:27:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:01,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:27:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:01,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:27:01,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:27:01,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621754869] [2023-12-20 11:27:01,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621754869] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:27:01,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:27:01,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:27:01,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450594313] [2023-12-20 11:27:01,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:27:01,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:27:01,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:27:01,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:27:01,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:27:01,420 INFO L87 Difference]: Start difference. First operand 5145 states and 8853 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:03,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:03,359 INFO L93 Difference]: Finished difference Result 9313 states and 15771 transitions. [2023-12-20 11:27:03,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:27:03,360 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 11:27:03,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:27:03,466 INFO L225 Difference]: With dead ends: 9313 [2023-12-20 11:27:03,467 INFO L226 Difference]: Without dead ends: 6307 [2023-12-20 11:27:03,474 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 [2023-12-20 11:27:03,476 INFO L413 NwaCegarLoop]: 4219 mSDtfsCounter, 5049 mSDsluCounter, 16637 mSDsCounter, 0 mSdLazyCounter, 1858 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5069 SdHoareTripleChecker+Valid, 20856 SdHoareTripleChecker+Invalid, 1927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 11:27:03,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5069 Valid, 20856 Invalid, 1927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1858 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 11:27:03,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6307 states. [2023-12-20 11:27:03,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6307 to 5145. [2023-12-20 11:27:03,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5145 states, 4885 states have (on average 1.723439099283521) internal successors, (8419), 4896 states have internal predecessors, (8419), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2023-12-20 11:27:03,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5145 states to 5145 states and 8844 transitions. [2023-12-20 11:27:03,640 INFO L78 Accepts]: Start accepts. Automaton has 5145 states and 8844 transitions. Word has length 162 [2023-12-20 11:27:03,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:27:03,641 INFO L495 AbstractCegarLoop]: Abstraction has 5145 states and 8844 transitions. [2023-12-20 11:27:03,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:03,642 INFO L276 IsEmpty]: Start isEmpty. Operand 5145 states and 8844 transitions. [2023-12-20 11:27:03,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:27:03,646 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:27:03,646 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:27:03,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 11:27:03,646 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:27:03,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:27:03,647 INFO L85 PathProgramCache]: Analyzing trace with hash -291761837, now seen corresponding path program 1 times [2023-12-20 11:27:03,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:27:03,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305302467] [2023-12-20 11:27:03,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:27:03,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:27:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:03,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:27:03,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:03,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:27:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:03,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:27:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:03,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:27:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:03,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:27:03,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:03,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:27:03,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:27:03,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305302467] [2023-12-20 11:27:03,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305302467] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:27:03,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:27:03,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:27:03,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856004307] [2023-12-20 11:27:03,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:27:03,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:27:03,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:27:03,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:27:03,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:27:03,903 INFO L87 Difference]: Start difference. First operand 5145 states and 8844 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:07,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:07,595 INFO L93 Difference]: Finished difference Result 12796 states and 21418 transitions. [2023-12-20 11:27:07,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:27:07,595 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 11:27:07,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:27:07,634 INFO L225 Difference]: With dead ends: 12796 [2023-12-20 11:27:07,635 INFO L226 Difference]: Without dead ends: 9790 [2023-12-20 11:27:07,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 11:27:07,651 INFO L413 NwaCegarLoop]: 4439 mSDtfsCounter, 5459 mSDsluCounter, 17441 mSDsCounter, 0 mSdLazyCounter, 3623 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5478 SdHoareTripleChecker+Valid, 21880 SdHoareTripleChecker+Invalid, 3690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 11:27:07,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5478 Valid, 21880 Invalid, 3690 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 3623 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 11:27:07,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9790 states. [2023-12-20 11:27:07,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9790 to 7813. [2023-12-20 11:27:07,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7813 states, 7329 states have (on average 1.6833128666939554) internal successors, (12337), 7348 states have internal predecessors, (12337), 364 states have call successors, (364), 103 states have call predecessors, (364), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2023-12-20 11:27:07,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7813 states to 7813 states and 13160 transitions. [2023-12-20 11:27:07,972 INFO L78 Accepts]: Start accepts. Automaton has 7813 states and 13160 transitions. Word has length 162 [2023-12-20 11:27:07,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:27:07,973 INFO L495 AbstractCegarLoop]: Abstraction has 7813 states and 13160 transitions. [2023-12-20 11:27:07,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:07,973 INFO L276 IsEmpty]: Start isEmpty. Operand 7813 states and 13160 transitions. [2023-12-20 11:27:07,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:27:07,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:27:07,978 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:27:07,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 11:27:07,979 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:27:07,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:27:07,979 INFO L85 PathProgramCache]: Analyzing trace with hash 71704661, now seen corresponding path program 1 times [2023-12-20 11:27:07,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:27:07,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406454778] [2023-12-20 11:27:07,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:27:07,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:27:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:08,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:27:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:08,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:27:08,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:08,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:27:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:08,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:27:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:08,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:27:08,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:08,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:27:08,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:27:08,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406454778] [2023-12-20 11:27:08,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406454778] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:27:08,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:27:08,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:27:08,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236246789] [2023-12-20 11:27:08,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:27:08,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:27:08,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:27:08,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:27:08,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:27:08,313 INFO L87 Difference]: Start difference. First operand 7813 states and 13160 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:12,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:12,371 INFO L93 Difference]: Finished difference Result 22482 states and 37288 transitions. [2023-12-20 11:27:12,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:27:12,372 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 11:27:12,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:27:12,439 INFO L225 Difference]: With dead ends: 22482 [2023-12-20 11:27:12,440 INFO L226 Difference]: Without dead ends: 16808 [2023-12-20 11:27:12,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 11:27:12,467 INFO L413 NwaCegarLoop]: 4439 mSDtfsCounter, 5458 mSDsluCounter, 17441 mSDsCounter, 0 mSdLazyCounter, 3610 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5477 SdHoareTripleChecker+Valid, 21880 SdHoareTripleChecker+Invalid, 3677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 11:27:12,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5477 Valid, 21880 Invalid, 3677 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 3610 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 11:27:12,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16808 states. [2023-12-20 11:27:13,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16808 to 13162. [2023-12-20 11:27:13,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13162 states, 12230 states have (on average 1.6509403107113656) internal successors, (20191), 12265 states have internal predecessors, (20191), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2023-12-20 11:27:13,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13162 states to 13162 states and 21864 transitions. [2023-12-20 11:27:13,144 INFO L78 Accepts]: Start accepts. Automaton has 13162 states and 21864 transitions. Word has length 162 [2023-12-20 11:27:13,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:27:13,144 INFO L495 AbstractCegarLoop]: Abstraction has 13162 states and 21864 transitions. [2023-12-20 11:27:13,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:13,145 INFO L276 IsEmpty]: Start isEmpty. Operand 13162 states and 21864 transitions. [2023-12-20 11:27:13,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:27:13,156 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:27:13,156 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:27:13,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 11:27:13,156 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:27:13,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:27:13,157 INFO L85 PathProgramCache]: Analyzing trace with hash 360524051, now seen corresponding path program 1 times [2023-12-20 11:27:13,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:27:13,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950082652] [2023-12-20 11:27:13,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:27:13,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:27:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:13,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:27:13,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:13,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:27:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:13,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:27:13,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:13,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:27:13,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:13,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:27:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:13,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:27:13,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:27:13,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950082652] [2023-12-20 11:27:13,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950082652] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:27:13,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:27:13,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:27:13,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871318674] [2023-12-20 11:27:13,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:27:13,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:27:13,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:27:13,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:27:13,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:27:13,403 INFO L87 Difference]: Start difference. First operand 13162 states and 21864 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:17,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:17,506 INFO L93 Difference]: Finished difference Result 41853 states and 69218 transitions. [2023-12-20 11:27:17,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:27:17,508 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 11:27:17,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:27:17,634 INFO L225 Difference]: With dead ends: 41853 [2023-12-20 11:27:17,634 INFO L226 Difference]: Without dead ends: 30830 [2023-12-20 11:27:17,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 11:27:17,682 INFO L413 NwaCegarLoop]: 4241 mSDtfsCounter, 5557 mSDsluCounter, 16898 mSDsCounter, 0 mSdLazyCounter, 3005 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5576 SdHoareTripleChecker+Valid, 21139 SdHoareTripleChecker+Invalid, 3112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 3005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 11:27:17,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5576 Valid, 21139 Invalid, 3112 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [107 Valid, 3005 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 11:27:17,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30830 states. [2023-12-20 11:27:18,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30830 to 23891. [2023-12-20 11:27:18,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23891 states, 22063 states have (on average 1.6291982051398268) internal successors, (35945), 22130 states have internal predecessors, (35945), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2023-12-20 11:27:18,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23891 states to 23891 states and 39480 transitions. [2023-12-20 11:27:18,691 INFO L78 Accepts]: Start accepts. Automaton has 23891 states and 39480 transitions. Word has length 162 [2023-12-20 11:27:18,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:27:18,693 INFO L495 AbstractCegarLoop]: Abstraction has 23891 states and 39480 transitions. [2023-12-20 11:27:18,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:18,693 INFO L276 IsEmpty]: Start isEmpty. Operand 23891 states and 39480 transitions. [2023-12-20 11:27:18,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:27:18,707 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:27:18,707 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:27:18,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 11:27:18,708 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:27:18,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:27:18,708 INFO L85 PathProgramCache]: Analyzing trace with hash -184348523, now seen corresponding path program 1 times [2023-12-20 11:27:18,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:27:18,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666229636] [2023-12-20 11:27:18,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:27:18,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:27:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:18,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:27:18,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:18,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:27:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:18,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:27:18,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:18,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:27:18,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:18,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:27:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:18,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:27:18,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:27:18,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666229636] [2023-12-20 11:27:18,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666229636] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:27:18,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:27:18,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:27:18,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975869390] [2023-12-20 11:27:18,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:27:18,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:27:18,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:27:18,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:27:18,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:27:18,941 INFO L87 Difference]: Start difference. First operand 23891 states and 39480 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:21,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:21,622 INFO L93 Difference]: Finished difference Result 53013 states and 88342 transitions. [2023-12-20 11:27:21,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:27:21,622 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 11:27:21,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:27:21,753 INFO L225 Difference]: With dead ends: 53013 [2023-12-20 11:27:21,753 INFO L226 Difference]: Without dead ends: 31261 [2023-12-20 11:27:21,802 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 [2023-12-20 11:27:21,803 INFO L413 NwaCegarLoop]: 4219 mSDtfsCounter, 5209 mSDsluCounter, 12509 mSDsCounter, 0 mSdLazyCounter, 1636 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5229 SdHoareTripleChecker+Valid, 16728 SdHoareTripleChecker+Invalid, 1733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 11:27:21,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5229 Valid, 16728 Invalid, 1733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1636 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 11:27:21,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31261 states. [2023-12-20 11:27:22,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31261 to 23891. [2023-12-20 11:27:22,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23891 states, 22063 states have (on average 1.6262520962697729) internal successors, (35880), 22130 states have internal predecessors, (35880), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2023-12-20 11:27:22,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23891 states to 23891 states and 39415 transitions. [2023-12-20 11:27:22,840 INFO L78 Accepts]: Start accepts. Automaton has 23891 states and 39415 transitions. Word has length 162 [2023-12-20 11:27:22,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:27:22,840 INFO L495 AbstractCegarLoop]: Abstraction has 23891 states and 39415 transitions. [2023-12-20 11:27:22,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:22,841 INFO L276 IsEmpty]: Start isEmpty. Operand 23891 states and 39415 transitions. [2023-12-20 11:27:22,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:27:22,855 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:27:22,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:27:22,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 11:27:22,855 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:27:22,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:27:22,856 INFO L85 PathProgramCache]: Analyzing trace with hash 490811603, now seen corresponding path program 1 times [2023-12-20 11:27:22,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:27:22,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609032486] [2023-12-20 11:27:22,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:27:22,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:27:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:22,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:27:22,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:23,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:27:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:23,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:27:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:23,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:27:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:23,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:27:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:23,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:27:23,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:27:23,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609032486] [2023-12-20 11:27:23,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609032486] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:27:23,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:27:23,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:27:23,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778100631] [2023-12-20 11:27:23,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:27:23,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:27:23,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:27:23,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:27:23,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:27:23,101 INFO L87 Difference]: Start difference. First operand 23891 states and 39415 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:27,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:27,928 INFO L93 Difference]: Finished difference Result 90448 states and 149158 transitions. [2023-12-20 11:27:27,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:27:27,929 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 11:27:27,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:27:28,262 INFO L225 Difference]: With dead ends: 90448 [2023-12-20 11:27:28,262 INFO L226 Difference]: Without dead ends: 68696 [2023-12-20 11:27:28,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:27:28,348 INFO L413 NwaCegarLoop]: 4437 mSDtfsCounter, 5885 mSDsluCounter, 17436 mSDsCounter, 0 mSdLazyCounter, 3530 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5917 SdHoareTripleChecker+Valid, 21873 SdHoareTripleChecker+Invalid, 3600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 3530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 11:27:28,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5917 Valid, 21873 Invalid, 3600 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 3530 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 11:27:28,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68696 states. [2023-12-20 11:27:30,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68696 to 45414. [2023-12-20 11:27:30,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45414 states, 41858 states have (on average 1.6137894787137466) internal successors, (67550), 41989 states have internal predecessors, (67550), 2652 states have call successors, (2652), 775 states have call predecessors, (2652), 902 states have return successors, (4965), 2777 states have call predecessors, (4965), 2650 states have call successors, (4965) [2023-12-20 11:27:30,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45414 states to 45414 states and 75167 transitions. [2023-12-20 11:27:30,531 INFO L78 Accepts]: Start accepts. Automaton has 45414 states and 75167 transitions. Word has length 162 [2023-12-20 11:27:30,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:27:30,532 INFO L495 AbstractCegarLoop]: Abstraction has 45414 states and 75167 transitions. [2023-12-20 11:27:30,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:30,532 INFO L276 IsEmpty]: Start isEmpty. Operand 45414 states and 75167 transitions. [2023-12-20 11:27:30,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:27:30,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:27:30,562 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:27:30,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 11:27:30,562 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:27:30,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:27:30,563 INFO L85 PathProgramCache]: Analyzing trace with hash -93960047, now seen corresponding path program 1 times [2023-12-20 11:27:30,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:27:30,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518090147] [2023-12-20 11:27:30,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:27:30,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:27:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:30,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:27:30,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:30,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:27:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:30,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:27:30,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:30,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:27:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:30,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:27:30,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:30,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:27:30,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:27:30,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518090147] [2023-12-20 11:27:30,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518090147] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:27:30,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:27:30,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:27:30,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338083401] [2023-12-20 11:27:30,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:27:30,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:27:30,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:27:30,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:27:30,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:27:30,812 INFO L87 Difference]: Start difference. First operand 45414 states and 75167 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:37,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:37,750 INFO L93 Difference]: Finished difference Result 176129 states and 292736 transitions. [2023-12-20 11:27:37,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:27:37,750 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 11:27:37,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:27:38,333 INFO L225 Difference]: With dead ends: 176129 [2023-12-20 11:27:38,333 INFO L226 Difference]: Without dead ends: 132854 [2023-12-20 11:27:38,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:27:38,463 INFO L413 NwaCegarLoop]: 4436 mSDtfsCounter, 5550 mSDsluCounter, 17433 mSDsCounter, 0 mSdLazyCounter, 4193 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5568 SdHoareTripleChecker+Valid, 21869 SdHoareTripleChecker+Invalid, 4262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 4193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-20 11:27:38,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5568 Valid, 21869 Invalid, 4262 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 4193 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-20 11:27:38,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132854 states. [2023-12-20 11:27:42,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132854 to 87175. [2023-12-20 11:27:42,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87175 states, 80227 states have (on average 1.6042479464519426) internal successors, (128704), 80486 states have internal predecessors, (128704), 5148 states have call successors, (5148), 1543 states have call predecessors, (5148), 1798 states have return successors, (11963), 5401 states have call predecessors, (11963), 5146 states have call successors, (11963) [2023-12-20 11:27:43,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87175 states to 87175 states and 145815 transitions. [2023-12-20 11:27:43,020 INFO L78 Accepts]: Start accepts. Automaton has 87175 states and 145815 transitions. Word has length 162 [2023-12-20 11:27:43,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:27:43,021 INFO L495 AbstractCegarLoop]: Abstraction has 87175 states and 145815 transitions. [2023-12-20 11:27:43,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:43,021 INFO L276 IsEmpty]: Start isEmpty. Operand 87175 states and 145815 transitions. [2023-12-20 11:27:43,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:27:43,075 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:27:43,076 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:27:43,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 11:27:43,076 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:27:43,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:27:43,076 INFO L85 PathProgramCache]: Analyzing trace with hash -528465645, now seen corresponding path program 1 times [2023-12-20 11:27:43,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:27:43,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65250215] [2023-12-20 11:27:43,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:27:43,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:27:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:43,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:27:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:43,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:27:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:43,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:27:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:43,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:27:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:43,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:27:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:43,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:27:43,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:27:43,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65250215] [2023-12-20 11:27:43,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65250215] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:27:43,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:27:43,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:27:43,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490805232] [2023-12-20 11:27:43,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:27:43,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:27:43,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:27:43,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:27:43,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:27:43,520 INFO L87 Difference]: Start difference. First operand 87175 states and 145815 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:27:53,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:53,019 INFO L93 Difference]: Finished difference Result 341856 states and 575478 transitions. [2023-12-20 11:27:53,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:27:53,019 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 11:27:53,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:27:54,270 INFO L225 Difference]: With dead ends: 341856 [2023-12-20 11:27:54,271 INFO L226 Difference]: Without dead ends: 256820 [2023-12-20 11:27:54,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:27:54,537 INFO L413 NwaCegarLoop]: 4437 mSDtfsCounter, 5813 mSDsluCounter, 17436 mSDsCounter, 0 mSdLazyCounter, 3504 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5845 SdHoareTripleChecker+Valid, 21873 SdHoareTripleChecker+Invalid, 3574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 3504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 11:27:54,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5845 Valid, 21873 Invalid, 3574 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 3504 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 11:27:54,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256820 states. [2023-12-20 11:28:02,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256820 to 171976. [2023-12-20 11:28:02,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171976 states, 158372 states have (on average 1.601103730457404) internal successors, (253570), 158887 states have internal predecessors, (253570), 10012 states have call successors, (10012), 3079 states have call predecessors, (10012), 3590 states have return successors, (30205), 10521 states have call predecessors, (30205), 10010 states have call successors, (30205) [2023-12-20 11:28:03,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171976 states to 171976 states and 293787 transitions. [2023-12-20 11:28:03,365 INFO L78 Accepts]: Start accepts. Automaton has 171976 states and 293787 transitions. Word has length 162 [2023-12-20 11:28:03,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:28:03,365 INFO L495 AbstractCegarLoop]: Abstraction has 171976 states and 293787 transitions. [2023-12-20 11:28:03,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:28:03,366 INFO L276 IsEmpty]: Start isEmpty. Operand 171976 states and 293787 transitions. [2023-12-20 11:28:03,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:28:03,452 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:28:03,452 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:28:03,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 11:28:03,453 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:28:03,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:28:03,453 INFO L85 PathProgramCache]: Analyzing trace with hash -958123951, now seen corresponding path program 1 times [2023-12-20 11:28:03,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:28:03,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727694132] [2023-12-20 11:28:03,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:28:03,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:28:03,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:28:03,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:28:03,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:28:03,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:28:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:28:03,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:28:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:28:03,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:28:03,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:28:03,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:28:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:28:03,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:28:03,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:28:03,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727694132] [2023-12-20 11:28:03,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727694132] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:28:03,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:28:03,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:28:03,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992215932] [2023-12-20 11:28:03,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:28:03,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:28:03,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:28:03,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:28:03,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:28:03,717 INFO L87 Difference]: Start difference. First operand 171976 states and 293787 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:28:19,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:28:19,150 INFO L93 Difference]: Finished difference Result 673055 states and 1158460 transitions. [2023-12-20 11:28:19,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:28:19,150 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 11:28:19,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:28:21,802 INFO L225 Difference]: With dead ends: 673055 [2023-12-20 11:28:21,802 INFO L226 Difference]: Without dead ends: 503218 [2023-12-20 11:28:22,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:28:22,543 INFO L413 NwaCegarLoop]: 4437 mSDtfsCounter, 5777 mSDsluCounter, 17436 mSDsCounter, 0 mSdLazyCounter, 3491 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5809 SdHoareTripleChecker+Valid, 21873 SdHoareTripleChecker+Invalid, 3561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 3491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 11:28:22,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5809 Valid, 21873 Invalid, 3561 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 3491 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 11:28:22,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503218 states. [2023-12-20 11:28:36,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503218 to 341577. [2023-12-20 11:28:37,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341577 states, 314917 states have (on average 1.5998247157187448) internal successors, (503812), 315944 states have internal predecessors, (503812), 19484 states have call successors, (19484), 6151 states have call predecessors, (19484), 7174 states have return successors, (79555), 20505 states have call predecessors, (79555), 19482 states have call successors, (79555) [2023-12-20 11:28:40,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341577 states to 341577 states and 602851 transitions. [2023-12-20 11:28:40,060 INFO L78 Accepts]: Start accepts. Automaton has 341577 states and 602851 transitions. Word has length 162 [2023-12-20 11:28:40,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:28:40,061 INFO L495 AbstractCegarLoop]: Abstraction has 341577 states and 602851 transitions. [2023-12-20 11:28:40,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:28:40,061 INFO L276 IsEmpty]: Start isEmpty. Operand 341577 states and 602851 transitions. [2023-12-20 11:28:40,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:28:40,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:28:40,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:28:40,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 11:28:40,244 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:28:40,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:28:40,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1664720557, now seen corresponding path program 1 times [2023-12-20 11:28:40,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:28:40,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090976150] [2023-12-20 11:28:40,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:28:40,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:28:40,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:28:40,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:28:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:28:40,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:28:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:28:40,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:28:40,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:28:40,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:28:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:28:40,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:28:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:28:40,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:28:40,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:28:40,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090976150] [2023-12-20 11:28:40,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090976150] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:28:40,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:28:40,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:28:40,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114690886] [2023-12-20 11:28:40,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:28:40,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:28:40,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:28:40,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:28:40,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:28:40,499 INFO L87 Difference]: Start difference. First operand 341577 states and 602851 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)