/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_label46+token_ring.14.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 11:38:01,241 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 11:38:01,340 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 11:38:01,343 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 11:38:01,344 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 11:38:01,372 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 11:38:01,374 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 11:38:01,374 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 11:38:01,375 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 11:38:01,379 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 11:38:01,379 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 11:38:01,379 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 11:38:01,380 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 11:38:01,380 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 11:38:01,381 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 11:38:01,381 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 11:38:01,381 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 11:38:01,381 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 11:38:01,382 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 11:38:01,382 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 11:38:01,382 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 11:38:01,392 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 11:38:01,392 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 11:38:01,393 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 11:38:01,393 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 11:38:01,393 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 11:38:01,393 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 11:38:01,393 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 11:38:01,394 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 11:38:01,394 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 11:38:01,394 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 11:38:01,394 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 11:38:01,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 11:38:01,395 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 11:38:01,395 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 11:38:01,395 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 11:38:01,395 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 11:38:01,395 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 11:38:01,395 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 11:38:01,395 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 11:38:01,395 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 11:38:01,396 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 11:38:01,396 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 11:38:01,396 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 11:38:01,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 11:38:01,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 11:38:01,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 11:38:01,684 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 11:38:01,684 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 11:38:01,685 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label46+token_ring.14.cil.c [2023-12-20 11:38:02,904 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 11:38:03,526 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 11:38:03,528 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label46+token_ring.14.cil.c [2023-12-20 11:38:03,587 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a1f64632/90b7bc9977de477c87d6721ce31f31c5/FLAG6ab35f61a [2023-12-20 11:38:03,603 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a1f64632/90b7bc9977de477c87d6721ce31f31c5 [2023-12-20 11:38:03,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 11:38:03,607 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 11:38:03,609 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 11:38:03,609 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 11:38:03,614 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 11:38:03,615 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 11:38:03" (1/1) ... [2023-12-20 11:38:03,616 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@134f2344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:38:03, skipping insertion in model container [2023-12-20 11:38:03,616 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 11:38:03" (1/1) ... [2023-12-20 11:38:03,836 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 11:38:05,367 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_label46+token_ring.14.cil.c[382357,382370] [2023-12-20 11:38:05,423 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_label46+token_ring.14.cil.c[383339,383352] [2023-12-20 11:38:05,686 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 11:38:05,698 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 11:38:06,410 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_label46+token_ring.14.cil.c[382357,382370] [2023-12-20 11:38:06,414 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_label46+token_ring.14.cil.c[383339,383352] [2023-12-20 11:38:06,438 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 11:38:06,497 INFO L206 MainTranslator]: Completed translation [2023-12-20 11:38:06,497 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:38:06 WrapperNode [2023-12-20 11:38:06,498 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 11:38:06,499 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 11:38:06,499 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 11:38:06,499 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 11:38:06,504 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:38:06" (1/1) ... [2023-12-20 11:38:06,573 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:38:06" (1/1) ... [2023-12-20 11:38:06,989 INFO L138 Inliner]: procedures = 68, calls = 78, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 13237 [2023-12-20 11:38:06,989 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 11:38:06,990 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 11:38:06,990 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 11:38:06,990 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 11:38:07,001 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:38:06" (1/1) ... [2023-12-20 11:38:07,002 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:38:06" (1/1) ... [2023-12-20 11:38:07,082 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:38:06" (1/1) ... [2023-12-20 11:38:07,282 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 11:38:07,282 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:38:06" (1/1) ... [2023-12-20 11:38:07,282 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:38:06" (1/1) ... [2023-12-20 11:38:07,435 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:38:06" (1/1) ... [2023-12-20 11:38:07,540 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:38:06" (1/1) ... [2023-12-20 11:38:07,571 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:38:06" (1/1) ... [2023-12-20 11:38:07,593 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:38:06" (1/1) ... [2023-12-20 11:38:07,671 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 11:38:07,671 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 11:38:07,672 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 11:38:07,672 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 11:38:07,676 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:38:06" (1/1) ... [2023-12-20 11:38:07,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 11:38:07,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:38:07,700 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 11:38:07,708 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 11:38:07,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 11:38:07,728 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-20 11:38:07,728 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-20 11:38:07,729 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-20 11:38:07,730 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-20 11:38:07,730 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-20 11:38:07,730 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-20 11:38:07,730 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-20 11:38:07,730 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-20 11:38:07,730 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-20 11:38:07,730 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-20 11:38:07,730 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-20 11:38:07,730 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-20 11:38:07,730 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-20 11:38:07,730 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-20 11:38:07,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 11:38:07,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 11:38:07,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 11:38:07,905 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 11:38:07,907 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 11:38:15,060 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 11:38:15,136 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 11:38:15,137 INFO L309 CfgBuilder]: Removed 16 assume(true) statements. [2023-12-20 11:38:15,137 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 11:38:15 BoogieIcfgContainer [2023-12-20 11:38:15,137 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 11:38:15,139 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 11:38:15,140 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 11:38:15,142 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 11:38:15,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 11:38:03" (1/3) ... [2023-12-20 11:38:15,143 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11bd213d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 11:38:15, skipping insertion in model container [2023-12-20 11:38:15,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:38:06" (2/3) ... [2023-12-20 11:38:15,143 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11bd213d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 11:38:15, skipping insertion in model container [2023-12-20 11:38:15,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 11:38:15" (3/3) ... [2023-12-20 11:38:15,144 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.14.cil.c [2023-12-20 11:38:15,159 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 11:38:15,159 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 11:38:15,232 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 11:38:15,238 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;@2b5276a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 11:38:15,238 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 11:38:15,250 INFO L276 IsEmpty]: Start isEmpty. Operand has 2477 states, 2439 states have (on average 1.8757687576875768) internal successors, (4575), 2444 states have internal predecessors, (4575), 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 11:38:15,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:38:15,266 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:38:15,267 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 11:38:15,267 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:38:15,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:38:15,271 INFO L85 PathProgramCache]: Analyzing trace with hash -282034047, now seen corresponding path program 1 times [2023-12-20 11:38:15,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:38:15,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573991693] [2023-12-20 11:38:15,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:38:15,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:38:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:15,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:38:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:15,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:38:15,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:15,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:38:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:15,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:38:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:15,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:38:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:15,892 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 11:38:15,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:38:15,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573991693] [2023-12-20 11:38:15,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573991693] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:38:15,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:38:15,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 11:38:15,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770948832] [2023-12-20 11:38:15,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:38:15,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 11:38:15,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:38:15,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 11:38:15,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 11:38:15,933 INFO L87 Difference]: Start difference. First operand has 2477 states, 2439 states have (on average 1.8757687576875768) internal successors, (4575), 2444 states have internal predecessors, (4575), 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 11:38:17,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:38:17,931 INFO L93 Difference]: Finished difference Result 5079 states and 9486 transitions. [2023-12-20 11:38:17,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 11:38:17,934 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 11:38:17,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:38:17,964 INFO L225 Difference]: With dead ends: 5079 [2023-12-20 11:38:17,965 INFO L226 Difference]: Without dead ends: 2602 [2023-12-20 11:38:17,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 11:38:17,982 INFO L413 NwaCegarLoop]: 4264 mSDtfsCounter, 989 mSDsluCounter, 12214 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 16478 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 11:38:17,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 16478 Invalid, 1131 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 11:38:18,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2023-12-20 11:38:18,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 2472. [2023-12-20 11:38:18,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2472 states, 2436 states have (on average 1.8370279146141215) internal successors, (4475), 2439 states have internal predecessors, (4475), 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 11:38:18,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2472 states to 2472 states and 4529 transitions. [2023-12-20 11:38:18,112 INFO L78 Accepts]: Start accepts. Automaton has 2472 states and 4529 transitions. Word has length 162 [2023-12-20 11:38:18,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:38:18,112 INFO L495 AbstractCegarLoop]: Abstraction has 2472 states and 4529 transitions. [2023-12-20 11:38:18,112 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 11:38:18,113 INFO L276 IsEmpty]: Start isEmpty. Operand 2472 states and 4529 transitions. [2023-12-20 11:38:18,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:38:18,116 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:38:18,117 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:38:18,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 11:38:18,117 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:38:18,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:38:18,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1487437567, now seen corresponding path program 1 times [2023-12-20 11:38:18,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:38:18,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185228127] [2023-12-20 11:38:18,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:38:18,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:38:18,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:18,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:38:18,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:18,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:38:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:18,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:38:18,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:18,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:38:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:18,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:38:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:18,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:38:18,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:38:18,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185228127] [2023-12-20 11:38:18,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185228127] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:38:18,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:38:18,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:38:18,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805249936] [2023-12-20 11:38:18,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:38:18,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:38:18,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:38:18,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:38:18,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:38:18,389 INFO L87 Difference]: Start difference. First operand 2472 states and 4529 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 11:38:21,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:38:21,180 INFO L93 Difference]: Finished difference Result 2982 states and 5392 transitions. [2023-12-20 11:38:21,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 11:38:21,181 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 11:38:21,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:38:21,196 INFO L225 Difference]: With dead ends: 2982 [2023-12-20 11:38:21,196 INFO L226 Difference]: Without dead ends: 2644 [2023-12-20 11:38:21,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-12-20 11:38:21,200 INFO L413 NwaCegarLoop]: 4260 mSDtfsCounter, 1149 mSDsluCounter, 20635 mSDsCounter, 0 mSdLazyCounter, 2093 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 24895 SdHoareTripleChecker+Invalid, 2156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 11:38:21,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1176 Valid, 24895 Invalid, 2156 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 2093 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 11:38:21,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2023-12-20 11:38:21,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 2474. [2023-12-20 11:38:21,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2474 states, 2438 states have (on average 1.8359310910582445) internal successors, (4476), 2441 states have internal predecessors, (4476), 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 11:38:21,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 4530 transitions. [2023-12-20 11:38:21,286 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 4530 transitions. Word has length 162 [2023-12-20 11:38:21,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:38:21,288 INFO L495 AbstractCegarLoop]: Abstraction has 2474 states and 4530 transitions. [2023-12-20 11:38:21,288 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 11:38:21,288 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 4530 transitions. [2023-12-20 11:38:21,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:38:21,292 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:38:21,292 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 11:38:21,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 11:38:21,294 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:38:21,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:38:21,297 INFO L85 PathProgramCache]: Analyzing trace with hash 395345595, now seen corresponding path program 1 times [2023-12-20 11:38:21,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:38:21,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843296957] [2023-12-20 11:38:21,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:38:21,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:38:21,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:21,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:38:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:21,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:38:21,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:21,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:38:21,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:21,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:38:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:21,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:38:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:21,649 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 11:38:21,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:38:21,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843296957] [2023-12-20 11:38:21,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843296957] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:38:21,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:38:21,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 11:38:21,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364662080] [2023-12-20 11:38:21,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:38:21,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 11:38:21,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:38:21,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 11:38:21,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 11:38:21,654 INFO L87 Difference]: Start difference. First operand 2474 states and 4530 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 11:38:24,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:38:24,789 INFO L93 Difference]: Finished difference Result 3427 states and 6120 transitions. [2023-12-20 11:38:24,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 11:38:24,789 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 11:38:24,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:38:24,808 INFO L225 Difference]: With dead ends: 3427 [2023-12-20 11:38:24,808 INFO L226 Difference]: Without dead ends: 3092 [2023-12-20 11:38:24,810 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 11:38:24,811 INFO L413 NwaCegarLoop]: 4228 mSDtfsCounter, 5445 mSDsluCounter, 12677 mSDsCounter, 0 mSdLazyCounter, 2302 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5464 SdHoareTripleChecker+Valid, 16905 SdHoareTripleChecker+Invalid, 2418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 11:38:24,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5464 Valid, 16905 Invalid, 2418 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [116 Valid, 2302 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 11:38:24,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2023-12-20 11:38:24,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 2827. [2023-12-20 11:38:24,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2827 states, 2763 states have (on average 1.8139703221136445) internal successors, (5012), 2767 states have internal predecessors, (5012), 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 11:38:24,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2827 states to 2827 states and 5111 transitions. [2023-12-20 11:38:24,902 INFO L78 Accepts]: Start accepts. Automaton has 2827 states and 5111 transitions. Word has length 162 [2023-12-20 11:38:24,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:38:24,902 INFO L495 AbstractCegarLoop]: Abstraction has 2827 states and 5111 transitions. [2023-12-20 11:38:24,902 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 11:38:24,902 INFO L276 IsEmpty]: Start isEmpty. Operand 2827 states and 5111 transitions. [2023-12-20 11:38:24,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:38:24,905 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:38:24,905 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 11:38:24,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 11:38:24,905 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:38:24,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:38:24,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1810022789, now seen corresponding path program 1 times [2023-12-20 11:38:24,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:38:24,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764698282] [2023-12-20 11:38:24,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:38:24,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:38:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:25,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:38:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:25,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:38:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:25,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:38:25,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:25,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:38:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:25,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:38:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:25,235 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 11:38:25,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:38:25,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764698282] [2023-12-20 11:38:25,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764698282] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:38:25,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:38:25,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:38:25,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8084079] [2023-12-20 11:38:25,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:38:25,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:38:25,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:38:25,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:38:25,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:38:25,239 INFO L87 Difference]: Start difference. First operand 2827 states and 5111 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 11:38:29,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:38:29,421 INFO L93 Difference]: Finished difference Result 4284 states and 7544 transitions. [2023-12-20 11:38:29,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:38:29,423 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 11:38:29,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:38:29,440 INFO L225 Difference]: With dead ends: 4284 [2023-12-20 11:38:29,441 INFO L226 Difference]: Without dead ends: 3596 [2023-12-20 11:38:29,445 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 11:38:29,446 INFO L413 NwaCegarLoop]: 4433 mSDtfsCounter, 5480 mSDsluCounter, 17405 mSDsCounter, 0 mSdLazyCounter, 3740 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5499 SdHoareTripleChecker+Valid, 21838 SdHoareTripleChecker+Invalid, 3805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-20 11:38:29,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5499 Valid, 21838 Invalid, 3805 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 3740 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-20 11:38:29,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3596 states. [2023-12-20 11:38:29,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3596 to 3153. [2023-12-20 11:38:29,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3153 states, 3061 states have (on average 1.7948382881411304) internal successors, (5494), 3066 states have internal predecessors, (5494), 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 11:38:29,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3153 states to 3153 states and 5637 transitions. [2023-12-20 11:38:29,557 INFO L78 Accepts]: Start accepts. Automaton has 3153 states and 5637 transitions. Word has length 162 [2023-12-20 11:38:29,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:38:29,557 INFO L495 AbstractCegarLoop]: Abstraction has 3153 states and 5637 transitions. [2023-12-20 11:38:29,557 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 11:38:29,558 INFO L276 IsEmpty]: Start isEmpty. Operand 3153 states and 5637 transitions. [2023-12-20 11:38:29,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:38:29,560 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:38:29,560 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:38:29,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 11:38:29,560 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:38:29,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:38:29,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1399412423, now seen corresponding path program 1 times [2023-12-20 11:38:29,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:38:29,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456066491] [2023-12-20 11:38:29,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:38:29,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:38:29,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:29,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:38:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:29,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:38:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:29,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:38:29,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:29,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:38:29,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:29,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:38:29,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:29,860 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 11:38:29,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:38:29,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456066491] [2023-12-20 11:38:29,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456066491] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:38:29,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:38:29,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:38:29,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890090590] [2023-12-20 11:38:29,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:38:29,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:38:29,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:38:29,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:38:29,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:38:29,868 INFO L87 Difference]: Start difference. First operand 3153 states and 5637 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 11:38:33,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:38:33,234 INFO L93 Difference]: Finished difference Result 5541 states and 9618 transitions. [2023-12-20 11:38:33,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:38:33,235 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 11:38:33,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:38:33,255 INFO L225 Difference]: With dead ends: 5541 [2023-12-20 11:38:33,256 INFO L226 Difference]: Without dead ends: 4527 [2023-12-20 11:38:33,260 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 11:38:33,261 INFO L413 NwaCegarLoop]: 4237 mSDtfsCounter, 5592 mSDsluCounter, 16878 mSDsCounter, 0 mSdLazyCounter, 3099 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5611 SdHoareTripleChecker+Valid, 21115 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 11:38:33,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5611 Valid, 21115 Invalid, 3206 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [107 Valid, 3099 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 11:38:33,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4527 states. [2023-12-20 11:38:33,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4527 to 3806. [2023-12-20 11:38:33,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3806 states, 3658 states have (on average 1.7657189721159103) internal successors, (6459), 3665 states have internal predecessors, (6459), 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 11:38:33,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3806 states to 3806 states and 6694 transitions. [2023-12-20 11:38:33,382 INFO L78 Accepts]: Start accepts. Automaton has 3806 states and 6694 transitions. Word has length 162 [2023-12-20 11:38:33,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:38:33,383 INFO L495 AbstractCegarLoop]: Abstraction has 3806 states and 6694 transitions. [2023-12-20 11:38:33,383 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 11:38:33,383 INFO L276 IsEmpty]: Start isEmpty. Operand 3806 states and 6694 transitions. [2023-12-20 11:38:33,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:38:33,385 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:38:33,386 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 11:38:33,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 11:38:33,386 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:38:33,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:38:33,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1107685051, now seen corresponding path program 1 times [2023-12-20 11:38:33,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:38:33,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138408892] [2023-12-20 11:38:33,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:38:33,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:38:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:33,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:38:33,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:33,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:38:33,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:33,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:38:33,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:33,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:38:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:33,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:38:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:33,658 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 11:38:33,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:38:33,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138408892] [2023-12-20 11:38:33,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138408892] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:38:33,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:38:33,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:38:33,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997941103] [2023-12-20 11:38:33,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:38:33,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:38:33,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:38:33,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:38:33,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:38:33,660 INFO L87 Difference]: Start difference. First operand 3806 states and 6694 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 11:38:35,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:38:35,450 INFO L93 Difference]: Finished difference Result 6182 states and 10666 transitions. [2023-12-20 11:38:35,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:38:35,450 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 11:38:35,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:38:35,470 INFO L225 Difference]: With dead ends: 6182 [2023-12-20 11:38:35,471 INFO L226 Difference]: Without dead ends: 4515 [2023-12-20 11:38:35,478 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 11:38:35,478 INFO L413 NwaCegarLoop]: 4215 mSDtfsCounter, 5203 mSDsluCounter, 12497 mSDsCounter, 0 mSdLazyCounter, 1721 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5223 SdHoareTripleChecker+Valid, 16712 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 11:38:35,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5223 Valid, 16712 Invalid, 1818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1721 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 11:38:35,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4515 states. [2023-12-20 11:38:35,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4515 to 3806. [2023-12-20 11:38:35,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3806 states, 3658 states have (on average 1.7643521049753963) internal successors, (6454), 3665 states have internal predecessors, (6454), 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 11:38:35,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3806 states to 3806 states and 6689 transitions. [2023-12-20 11:38:35,601 INFO L78 Accepts]: Start accepts. Automaton has 3806 states and 6689 transitions. Word has length 162 [2023-12-20 11:38:35,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:38:35,601 INFO L495 AbstractCegarLoop]: Abstraction has 3806 states and 6689 transitions. [2023-12-20 11:38:35,601 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 11:38:35,601 INFO L276 IsEmpty]: Start isEmpty. Operand 3806 states and 6689 transitions. [2023-12-20 11:38:35,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:38:35,604 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:38:35,604 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 11:38:35,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 11:38:35,604 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:38:35,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:38:35,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1028198151, now seen corresponding path program 1 times [2023-12-20 11:38:35,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:38:35,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868613339] [2023-12-20 11:38:35,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:38:35,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:38:35,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:35,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:38:35,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:35,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:38:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:35,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:38:35,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:35,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:38:35,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:35,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:38:35,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:35,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:38:35,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:38:35,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868613339] [2023-12-20 11:38:35,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868613339] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:38:35,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:38:35,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:38:35,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626054314] [2023-12-20 11:38:35,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:38:35,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:38:35,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:38:35,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:38:35,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:38:35,873 INFO L87 Difference]: Start difference. First operand 3806 states and 6689 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 11:38:37,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:38:37,554 INFO L93 Difference]: Finished difference Result 6171 states and 10630 transitions. [2023-12-20 11:38:37,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:38:37,561 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 11:38:37,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:38:37,593 INFO L225 Difference]: With dead ends: 6171 [2023-12-20 11:38:37,593 INFO L226 Difference]: Without dead ends: 4504 [2023-12-20 11:38:37,601 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 11:38:37,602 INFO L413 NwaCegarLoop]: 4215 mSDtfsCounter, 5199 mSDsluCounter, 12497 mSDsCounter, 0 mSdLazyCounter, 1701 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5219 SdHoareTripleChecker+Valid, 16712 SdHoareTripleChecker+Invalid, 1798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 11:38:37,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5219 Valid, 16712 Invalid, 1798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1701 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 11:38:37,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4504 states. [2023-12-20 11:38:37,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4504 to 3806. [2023-12-20 11:38:37,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3806 states, 3658 states have (on average 1.7629852378348825) internal successors, (6449), 3665 states have internal predecessors, (6449), 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 11:38:37,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3806 states to 3806 states and 6684 transitions. [2023-12-20 11:38:37,711 INFO L78 Accepts]: Start accepts. Automaton has 3806 states and 6684 transitions. Word has length 162 [2023-12-20 11:38:37,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:38:37,712 INFO L495 AbstractCegarLoop]: Abstraction has 3806 states and 6684 transitions. [2023-12-20 11:38:37,712 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 11:38:37,712 INFO L276 IsEmpty]: Start isEmpty. Operand 3806 states and 6684 transitions. [2023-12-20 11:38:37,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:38:37,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:38:37,714 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 11:38:37,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 11:38:37,715 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:38:37,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:38:37,715 INFO L85 PathProgramCache]: Analyzing trace with hash -610309449, now seen corresponding path program 1 times [2023-12-20 11:38:37,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:38:37,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546225069] [2023-12-20 11:38:37,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:38:37,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:38:37,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:37,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:38:37,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:37,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:38:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:37,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:38:37,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:37,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:38:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:37,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:38:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:37,986 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 11:38:37,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:38:37,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546225069] [2023-12-20 11:38:37,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546225069] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:38:37,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:38:37,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:38:37,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782085360] [2023-12-20 11:38:37,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:38:37,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:38:37,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:38:37,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:38:37,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:38:37,988 INFO L87 Difference]: Start difference. First operand 3806 states and 6684 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 11:38:41,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:38:41,678 INFO L93 Difference]: Finished difference Result 7933 states and 13493 transitions. [2023-12-20 11:38:41,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:38:41,679 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 11:38:41,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:38:41,697 INFO L225 Difference]: With dead ends: 7933 [2023-12-20 11:38:41,697 INFO L226 Difference]: Without dead ends: 6266 [2023-12-20 11:38:41,703 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 11:38:41,704 INFO L413 NwaCegarLoop]: 4431 mSDtfsCounter, 5463 mSDsluCounter, 17405 mSDsCounter, 0 mSdLazyCounter, 3661 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5482 SdHoareTripleChecker+Valid, 21836 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 11:38:41,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5482 Valid, 21836 Invalid, 3728 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 3661 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 11:38:41,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6266 states. [2023-12-20 11:38:41,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6266 to 5127. [2023-12-20 11:38:41,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5127 states, 4867 states have (on average 1.724265461269776) internal successors, (8392), 4878 states have internal predecessors, (8392), 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 11:38:41,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5127 states to 5127 states and 8817 transitions. [2023-12-20 11:38:41,865 INFO L78 Accepts]: Start accepts. Automaton has 5127 states and 8817 transitions. Word has length 162 [2023-12-20 11:38:41,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:38:41,866 INFO L495 AbstractCegarLoop]: Abstraction has 5127 states and 8817 transitions. [2023-12-20 11:38:41,867 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 11:38:41,867 INFO L276 IsEmpty]: Start isEmpty. Operand 5127 states and 8817 transitions. [2023-12-20 11:38:41,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:38:41,870 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:38:41,870 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 11:38:41,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 11:38:41,870 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:38:41,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:38:41,872 INFO L85 PathProgramCache]: Analyzing trace with hash 788644153, now seen corresponding path program 1 times [2023-12-20 11:38:41,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:38:41,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597968494] [2023-12-20 11:38:41,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:38:41,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:38:41,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:41,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:38:41,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:42,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:38:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:42,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:38:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:42,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:38:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:42,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:38:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:42,106 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 11:38:42,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:38:42,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597968494] [2023-12-20 11:38:42,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597968494] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:38:42,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:38:42,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:38:42,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722067068] [2023-12-20 11:38:42,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:38:42,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:38:42,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:38:42,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:38:42,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:38:42,109 INFO L87 Difference]: Start difference. First operand 5127 states and 8817 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 11:38:44,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:38:44,080 INFO L93 Difference]: Finished difference Result 9277 states and 15699 transitions. [2023-12-20 11:38:44,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:38:44,080 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 11:38:44,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:38:44,101 INFO L225 Difference]: With dead ends: 9277 [2023-12-20 11:38:44,102 INFO L226 Difference]: Without dead ends: 6289 [2023-12-20 11:38:44,113 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 11:38:44,114 INFO L413 NwaCegarLoop]: 4215 mSDtfsCounter, 5045 mSDsluCounter, 16621 mSDsCounter, 0 mSdLazyCounter, 1858 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5065 SdHoareTripleChecker+Valid, 20836 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 11:38:44,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5065 Valid, 20836 Invalid, 1927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1858 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 11:38:44,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6289 states. [2023-12-20 11:38:44,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6289 to 5127. [2023-12-20 11:38:44,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5127 states, 4867 states have (on average 1.7224162728580235) internal successors, (8383), 4878 states have internal predecessors, (8383), 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 11:38:44,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5127 states to 5127 states and 8808 transitions. [2023-12-20 11:38:44,281 INFO L78 Accepts]: Start accepts. Automaton has 5127 states and 8808 transitions. Word has length 162 [2023-12-20 11:38:44,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:38:44,281 INFO L495 AbstractCegarLoop]: Abstraction has 5127 states and 8808 transitions. [2023-12-20 11:38:44,282 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 11:38:44,282 INFO L276 IsEmpty]: Start isEmpty. Operand 5127 states and 8808 transitions. [2023-12-20 11:38:44,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:38:44,284 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:38:44,285 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 11:38:44,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 11:38:44,285 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:38:44,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:38:44,285 INFO L85 PathProgramCache]: Analyzing trace with hash -828796297, now seen corresponding path program 1 times [2023-12-20 11:38:44,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:38:44,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122632220] [2023-12-20 11:38:44,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:38:44,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:38:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:44,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:38:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:44,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:38:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:44,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:38:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:44,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:38:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:44,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:38:44,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:44,519 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 11:38:44,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:38:44,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122632220] [2023-12-20 11:38:44,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122632220] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:38:44,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:38:44,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:38:44,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454580598] [2023-12-20 11:38:44,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:38:44,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:38:44,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:38:44,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:38:44,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:38:44,522 INFO L87 Difference]: Start difference. First operand 5127 states and 8808 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 11:38:48,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:38:48,297 INFO L93 Difference]: Finished difference Result 12744 states and 21314 transitions. [2023-12-20 11:38:48,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:38:48,298 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 11:38:48,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:38:48,331 INFO L225 Difference]: With dead ends: 12744 [2023-12-20 11:38:48,331 INFO L226 Difference]: Without dead ends: 9756 [2023-12-20 11:38:48,343 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 11:38:48,344 INFO L413 NwaCegarLoop]: 4431 mSDtfsCounter, 5455 mSDsluCounter, 17405 mSDsCounter, 0 mSdLazyCounter, 3623 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5474 SdHoareTripleChecker+Valid, 21836 SdHoareTripleChecker+Invalid, 3690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 11:38:48,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5474 Valid, 21836 Invalid, 3690 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 3623 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 11:38:48,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9756 states. [2023-12-20 11:38:48,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9756 to 7779. [2023-12-20 11:38:48,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7779 states, 7295 states have (on average 1.6818368745716243) internal successors, (12269), 7314 states have internal predecessors, (12269), 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 11:38:48,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7779 states to 7779 states and 13092 transitions. [2023-12-20 11:38:48,627 INFO L78 Accepts]: Start accepts. Automaton has 7779 states and 13092 transitions. Word has length 162 [2023-12-20 11:38:48,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:38:48,628 INFO L495 AbstractCegarLoop]: Abstraction has 7779 states and 13092 transitions. [2023-12-20 11:38:48,628 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 11:38:48,628 INFO L276 IsEmpty]: Start isEmpty. Operand 7779 states and 13092 transitions. [2023-12-20 11:38:48,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:38:48,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:38:48,633 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 11:38:48,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 11:38:48,634 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:38:48,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:38:48,635 INFO L85 PathProgramCache]: Analyzing trace with hash -465329799, now seen corresponding path program 1 times [2023-12-20 11:38:48,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:38:48,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024135167] [2023-12-20 11:38:48,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:38:48,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:38:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:48,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:38:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:48,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:38:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:48,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:38:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:48,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:38:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:48,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:38:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:48,902 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 11:38:48,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:38:48,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024135167] [2023-12-20 11:38:48,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024135167] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:38:48,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:38:48,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:38:48,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12199096] [2023-12-20 11:38:48,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:38:48,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:38:48,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:38:48,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:38:48,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:38:48,905 INFO L87 Difference]: Start difference. First operand 7779 states and 13092 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 11:38:52,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:38:52,752 INFO L93 Difference]: Finished difference Result 22382 states and 37088 transitions. [2023-12-20 11:38:52,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:38:52,752 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 11:38:52,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:38:52,812 INFO L225 Difference]: With dead ends: 22382 [2023-12-20 11:38:52,813 INFO L226 Difference]: Without dead ends: 16742 [2023-12-20 11:38:52,836 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 11:38:52,837 INFO L413 NwaCegarLoop]: 4431 mSDtfsCounter, 5454 mSDsluCounter, 17405 mSDsCounter, 0 mSdLazyCounter, 3610 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5473 SdHoareTripleChecker+Valid, 21836 SdHoareTripleChecker+Invalid, 3677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 11:38:52,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5473 Valid, 21836 Invalid, 3677 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 3610 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 11:38:52,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16742 states. [2023-12-20 11:38:53,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16742 to 13096. [2023-12-20 11:38:53,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13096 states, 12164 states have (on average 1.6490463663268662) internal successors, (20059), 12199 states have internal predecessors, (20059), 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 11:38:53,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13096 states to 13096 states and 21732 transitions. [2023-12-20 11:38:53,390 INFO L78 Accepts]: Start accepts. Automaton has 13096 states and 21732 transitions. Word has length 162 [2023-12-20 11:38:53,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:38:53,390 INFO L495 AbstractCegarLoop]: Abstraction has 13096 states and 21732 transitions. [2023-12-20 11:38:53,390 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 11:38:53,390 INFO L276 IsEmpty]: Start isEmpty. Operand 13096 states and 21732 transitions. [2023-12-20 11:38:53,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:38:53,400 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:38:53,400 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 11:38:53,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 11:38:53,401 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:38:53,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:38:53,401 INFO L85 PathProgramCache]: Analyzing trace with hash -176510409, now seen corresponding path program 1 times [2023-12-20 11:38:53,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:38:53,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029506775] [2023-12-20 11:38:53,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:38:53,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:38:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:53,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:38:53,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:53,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:38:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:53,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:38:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:53,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:38:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:53,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:38:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:53,747 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 11:38:53,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:38:53,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029506775] [2023-12-20 11:38:53,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029506775] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:38:53,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:38:53,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:38:53,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768375529] [2023-12-20 11:38:53,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:38:53,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:38:53,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:38:53,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:38:53,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:38:53,749 INFO L87 Difference]: Start difference. First operand 13096 states and 21732 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 11:38:57,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:38:57,475 INFO L93 Difference]: Finished difference Result 41657 states and 68826 transitions. [2023-12-20 11:38:57,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:38:57,475 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 11:38:57,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:38:57,699 INFO L225 Difference]: With dead ends: 41657 [2023-12-20 11:38:57,699 INFO L226 Difference]: Without dead ends: 30700 [2023-12-20 11:38:57,744 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 11:38:57,744 INFO L413 NwaCegarLoop]: 4237 mSDtfsCounter, 5553 mSDsluCounter, 16878 mSDsCounter, 0 mSdLazyCounter, 3005 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5572 SdHoareTripleChecker+Valid, 21115 SdHoareTripleChecker+Invalid, 3112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 3005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 11:38:57,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5572 Valid, 21115 Invalid, 3112 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [107 Valid, 3005 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 11:38:57,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30700 states. [2023-12-20 11:38:58,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30700 to 23761. [2023-12-20 11:38:58,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23761 states, 21933 states have (on average 1.6270004103405826) internal successors, (35685), 22000 states have internal predecessors, (35685), 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 11:38:58,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23761 states to 23761 states and 39220 transitions. [2023-12-20 11:38:58,869 INFO L78 Accepts]: Start accepts. Automaton has 23761 states and 39220 transitions. Word has length 162 [2023-12-20 11:38:58,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:38:58,869 INFO L495 AbstractCegarLoop]: Abstraction has 23761 states and 39220 transitions. [2023-12-20 11:38:58,870 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 11:38:58,870 INFO L276 IsEmpty]: Start isEmpty. Operand 23761 states and 39220 transitions. [2023-12-20 11:38:58,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:38:58,889 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:38:58,890 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 11:38:58,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 11:38:58,890 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:38:58,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:38:58,890 INFO L85 PathProgramCache]: Analyzing trace with hash -721382983, now seen corresponding path program 1 times [2023-12-20 11:38:58,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:38:58,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741565575] [2023-12-20 11:38:58,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:38:58,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:38:58,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:58,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:38:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:59,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:38:59,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:59,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:38:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:59,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:38:59,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:59,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:38:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:38:59,135 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 11:38:59,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:38:59,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741565575] [2023-12-20 11:38:59,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741565575] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:38:59,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:38:59,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:38:59,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311393843] [2023-12-20 11:38:59,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:38:59,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:38:59,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:38:59,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:38:59,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:38:59,138 INFO L87 Difference]: Start difference. First operand 23761 states and 39220 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 11:39:01,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:39:01,602 INFO L93 Difference]: Finished difference Result 52753 states and 87822 transitions. [2023-12-20 11:39:01,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:39:01,603 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 11:39:01,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:39:01,719 INFO L225 Difference]: With dead ends: 52753 [2023-12-20 11:39:01,720 INFO L226 Difference]: Without dead ends: 31131 [2023-12-20 11:39:01,781 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 11:39:01,781 INFO L413 NwaCegarLoop]: 4215 mSDtfsCounter, 5051 mSDsluCounter, 16621 mSDsCounter, 0 mSdLazyCounter, 1807 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5071 SdHoareTripleChecker+Valid, 20836 SdHoareTripleChecker+Invalid, 1876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 11:39:01,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5071 Valid, 20836 Invalid, 1876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1807 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 11:39:01,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31131 states. [2023-12-20 11:39:02,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31131 to 23761. [2023-12-20 11:39:02,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23761 states, 21933 states have (on average 1.6240368394656455) internal successors, (35620), 22000 states have internal predecessors, (35620), 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 11:39:02,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23761 states to 23761 states and 39155 transitions. [2023-12-20 11:39:02,822 INFO L78 Accepts]: Start accepts. Automaton has 23761 states and 39155 transitions. Word has length 162 [2023-12-20 11:39:02,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:39:02,823 INFO L495 AbstractCegarLoop]: Abstraction has 23761 states and 39155 transitions. [2023-12-20 11:39:02,823 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 11:39:02,823 INFO L276 IsEmpty]: Start isEmpty. Operand 23761 states and 39155 transitions. [2023-12-20 11:39:02,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:39:02,837 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:39:02,837 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 11:39:02,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 11:39:02,838 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:39:02,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:39:02,838 INFO L85 PathProgramCache]: Analyzing trace with hash -46222857, now seen corresponding path program 1 times [2023-12-20 11:39:02,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:39:02,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569757870] [2023-12-20 11:39:02,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:39:02,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:39:02,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:39:02,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:39:02,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:39:02,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:39:02,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:39:03,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:39:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:39:03,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:39:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:39:03,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:39:03,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:39:03,074 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 11:39:03,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:39:03,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569757870] [2023-12-20 11:39:03,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569757870] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:39:03,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:39:03,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:39:03,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087497900] [2023-12-20 11:39:03,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:39:03,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:39:03,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:39:03,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:39:03,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:39:03,076 INFO L87 Difference]: Start difference. First operand 23761 states and 39155 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 11:39:08,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:39:08,119 INFO L93 Difference]: Finished difference Result 90060 states and 148382 transitions. [2023-12-20 11:39:08,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:39:08,120 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 11:39:08,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:39:08,347 INFO L225 Difference]: With dead ends: 90060 [2023-12-20 11:39:08,347 INFO L226 Difference]: Without dead ends: 68438 [2023-12-20 11:39:08,441 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 11:39:08,442 INFO L413 NwaCegarLoop]: 4429 mSDtfsCounter, 5881 mSDsluCounter, 17400 mSDsCounter, 0 mSdLazyCounter, 3530 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5913 SdHoareTripleChecker+Valid, 21829 SdHoareTripleChecker+Invalid, 3600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 3530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 11:39:08,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5913 Valid, 21829 Invalid, 3600 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 3530 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 11:39:08,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68438 states. [2023-12-20 11:39:10,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68438 to 45156. [2023-12-20 11:39:10,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45156 states, 41600 states have (on average 1.6113942307692308) internal successors, (67034), 41731 states have internal predecessors, (67034), 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 11:39:11,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45156 states to 45156 states and 74651 transitions. [2023-12-20 11:39:11,100 INFO L78 Accepts]: Start accepts. Automaton has 45156 states and 74651 transitions. Word has length 162 [2023-12-20 11:39:11,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:39:11,101 INFO L495 AbstractCegarLoop]: Abstraction has 45156 states and 74651 transitions. [2023-12-20 11:39:11,101 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 11:39:11,101 INFO L276 IsEmpty]: Start isEmpty. Operand 45156 states and 74651 transitions. [2023-12-20 11:39:11,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:39:11,126 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:39:11,126 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 11:39:11,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 11:39:11,126 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:39:11,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:39:11,127 INFO L85 PathProgramCache]: Analyzing trace with hash -630994507, now seen corresponding path program 1 times [2023-12-20 11:39:11,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:39:11,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353589859] [2023-12-20 11:39:11,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:39:11,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:39:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:39:11,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:39:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:39:11,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:39:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:39:11,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:39:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:39:11,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:39:11,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:39:11,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:39:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:39:11,480 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 11:39:11,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:39:11,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353589859] [2023-12-20 11:39:11,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353589859] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:39:11,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:39:11,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:39:11,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226826241] [2023-12-20 11:39:11,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:39:11,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:39:11,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:39:11,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:39:11,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:39:11,482 INFO L87 Difference]: Start difference. First operand 45156 states and 74651 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 11:39:17,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:39:17,695 INFO L93 Difference]: Finished difference Result 175357 states and 291192 transitions. [2023-12-20 11:39:17,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:39:17,695 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 11:39:17,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:39:18,070 INFO L225 Difference]: With dead ends: 175357 [2023-12-20 11:39:18,071 INFO L226 Difference]: Without dead ends: 132340 [2023-12-20 11:39:18,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:39:18,390 INFO L413 NwaCegarLoop]: 4428 mSDtfsCounter, 5546 mSDsluCounter, 17397 mSDsCounter, 0 mSdLazyCounter, 4193 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5564 SdHoareTripleChecker+Valid, 21825 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 11:39:18,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5564 Valid, 21825 Invalid, 4262 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 4193 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-20 11:39:18,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132340 states. [2023-12-20 11:39:22,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132340 to 86917. [2023-12-20 11:39:22,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86917 states, 79969 states have (on average 1.6029711513211369) internal successors, (128188), 80228 states have internal predecessors, (128188), 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 11:39:22,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86917 states to 86917 states and 145299 transitions. [2023-12-20 11:39:22,913 INFO L78 Accepts]: Start accepts. Automaton has 86917 states and 145299 transitions. Word has length 162 [2023-12-20 11:39:22,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:39:22,914 INFO L495 AbstractCegarLoop]: Abstraction has 86917 states and 145299 transitions. [2023-12-20 11:39:22,914 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 11:39:22,914 INFO L276 IsEmpty]: Start isEmpty. Operand 86917 states and 145299 transitions. [2023-12-20 11:39:22,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:39:22,960 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:39:22,960 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 11:39:22,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 11:39:22,961 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:39:22,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:39:22,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1065500105, now seen corresponding path program 1 times [2023-12-20 11:39:22,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:39:22,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757752182] [2023-12-20 11:39:22,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:39:22,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:39:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:39:23,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:39:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:39:23,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:39:23,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:39:23,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:39:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:39:23,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:39:23,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:39:23,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:39:23,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:39:23,221 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 11:39:23,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:39:23,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757752182] [2023-12-20 11:39:23,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757752182] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:39:23,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:39:23,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:39:23,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333939574] [2023-12-20 11:39:23,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:39:23,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:39:23,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:39:23,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:39:23,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:39:23,223 INFO L87 Difference]: Start difference. First operand 86917 states and 145299 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 11:39:32,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:39:32,540 INFO L93 Difference]: Finished difference Result 341084 states and 573934 transitions. [2023-12-20 11:39:32,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:39:32,541 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 11:39:32,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:39:33,625 INFO L225 Difference]: With dead ends: 341084 [2023-12-20 11:39:33,626 INFO L226 Difference]: Without dead ends: 256306 [2023-12-20 11:39:33,923 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 11:39:33,923 INFO L413 NwaCegarLoop]: 4429 mSDtfsCounter, 5809 mSDsluCounter, 17400 mSDsCounter, 0 mSdLazyCounter, 3504 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5841 SdHoareTripleChecker+Valid, 21829 SdHoareTripleChecker+Invalid, 3574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 3504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 11:39:33,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5841 Valid, 21829 Invalid, 3574 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 3504 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 11:39:34,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256306 states. [2023-12-20 11:39:40,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256306 to 171462. [2023-12-20 11:39:40,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171462 states, 157858 states have (on average 1.5998048879372602) internal successors, (252542), 158373 states have internal predecessors, (252542), 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 11:39:41,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171462 states to 171462 states and 292759 transitions. [2023-12-20 11:39:42,003 INFO L78 Accepts]: Start accepts. Automaton has 171462 states and 292759 transitions. Word has length 162 [2023-12-20 11:39:42,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:39:42,004 INFO L495 AbstractCegarLoop]: Abstraction has 171462 states and 292759 transitions. [2023-12-20 11:39:42,004 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 11:39:42,004 INFO L276 IsEmpty]: Start isEmpty. Operand 171462 states and 292759 transitions. [2023-12-20 11:39:42,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:39:42,421 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:39:42,421 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 11:39:42,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 11:39:42,421 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:39:42,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:39:42,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1495158411, now seen corresponding path program 1 times [2023-12-20 11:39:42,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:39:42,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461985479] [2023-12-20 11:39:42,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:39:42,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:39:42,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:39:42,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:39:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:39:42,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:39:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:39:42,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:39:42,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:39:42,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:39:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:39:42,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:39:42,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:39:42,680 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 11:39:42,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:39:42,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461985479] [2023-12-20 11:39:42,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461985479] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:39:42,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:39:42,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:39:42,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655028170] [2023-12-20 11:39:42,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:39:42,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:39:42,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:39:42,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:39:42,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:39:42,682 INFO L87 Difference]: Start difference. First operand 171462 states and 292759 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 11:39:57,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:39:57,934 INFO L93 Difference]: Finished difference Result 671515 states and 1155380 transitions. [2023-12-20 11:39:57,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:39:57,935 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 11:39:57,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:40:00,485 INFO L225 Difference]: With dead ends: 671515 [2023-12-20 11:40:00,485 INFO L226 Difference]: Without dead ends: 502192 [2023-12-20 11:40:01,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:40:01,092 INFO L413 NwaCegarLoop]: 4429 mSDtfsCounter, 5773 mSDsluCounter, 17400 mSDsCounter, 0 mSdLazyCounter, 3491 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5805 SdHoareTripleChecker+Valid, 21829 SdHoareTripleChecker+Invalid, 3561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 3491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 11:40:01,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5805 Valid, 21829 Invalid, 3561 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 3491 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 11:40:01,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502192 states. [2023-12-20 11:40:16,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502192 to 340551. [2023-12-20 11:40:17,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340551 states, 313891 states have (on average 1.598516682542666) internal successors, (501760), 314918 states have internal predecessors, (501760), 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 11:40:19,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340551 states to 340551 states and 600799 transitions. [2023-12-20 11:40:19,575 INFO L78 Accepts]: Start accepts. Automaton has 340551 states and 600799 transitions. Word has length 162 [2023-12-20 11:40:19,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:40:19,575 INFO L495 AbstractCegarLoop]: Abstraction has 340551 states and 600799 transitions. [2023-12-20 11:40:19,576 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 11:40:19,576 INFO L276 IsEmpty]: Start isEmpty. Operand 340551 states and 600799 transitions. [2023-12-20 11:40:19,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:40:19,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:40:19,717 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 11:40:19,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 11:40:19,717 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:40:19,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:40:19,718 INFO L85 PathProgramCache]: Analyzing trace with hash 2093212279, now seen corresponding path program 1 times [2023-12-20 11:40:19,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:40:19,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527688077] [2023-12-20 11:40:19,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:40:19,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:40:19,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:19,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:40:19,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:19,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:40:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:19,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:40:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:19,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:40:19,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:19,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:40:19,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:19,975 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 11:40:19,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:40:19,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527688077] [2023-12-20 11:40:19,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527688077] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:40:19,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:40:19,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:40:19,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339503387] [2023-12-20 11:40:19,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:40:19,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:40:19,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:40:19,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:40:19,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:40:19,978 INFO L87 Difference]: Start difference. First operand 340551 states and 600799 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 11:40:50,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:40:50,240 INFO L93 Difference]: Finished difference Result 1324698 states and 2357450 transitions. [2023-12-20 11:40:50,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:40:50,240 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 11:40:50,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:40:56,451 INFO L225 Difference]: With dead ends: 1324698 [2023-12-20 11:40:56,451 INFO L226 Difference]: Without dead ends: 986286 [2023-12-20 11:40:57,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:40:57,987 INFO L413 NwaCegarLoop]: 4429 mSDtfsCounter, 5517 mSDsluCounter, 17400 mSDsCounter, 0 mSdLazyCounter, 4017 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5535 SdHoareTripleChecker+Valid, 21829 SdHoareTripleChecker+Invalid, 4086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 4017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-20 11:40:57,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5535 Valid, 21829 Invalid, 4086 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 4017 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-20 11:40:58,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986286 states. [2023-12-20 11:41:37,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986286 to 678728. [2023-12-20 11:41:38,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678728 states, 626468 states have (on average 1.5981949596787066) internal successors, (1001218), 628519 states have internal predecessors, (1001218), 37916 states have call successors, (37916), 12295 states have call predecessors, (37916), 14342 states have return successors, (217109), 39961 states have call predecessors, (217109), 37914 states have call successors, (217109)