/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_label45+token_ring.05.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 00:38:02,896 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 00:38:02,963 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 00:38:02,967 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 00:38:02,967 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 00:38:02,987 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 00:38:02,988 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 00:38:02,988 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 00:38:02,988 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 00:38:02,991 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 00:38:02,991 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 00:38:02,991 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 00:38:02,992 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 00:38:02,993 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 00:38:02,993 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 00:38:02,993 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 00:38:02,993 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 00:38:02,993 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 00:38:02,993 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 00:38:02,994 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 00:38:02,994 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 00:38:02,994 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 00:38:02,994 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 00:38:02,994 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 00:38:02,994 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 00:38:02,994 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 00:38:02,995 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 00:38:02,995 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 00:38:02,995 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 00:38:02,995 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 00:38:02,996 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 00:38:02,996 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 00:38:02,996 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:38:02,996 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 00:38:02,996 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 00:38:02,997 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 00:38:02,997 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 00:38:02,997 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 00:38:02,997 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 00:38:02,997 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 00:38:02,997 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 00:38:02,997 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 00:38:02,997 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 00:38:02,997 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 00:38:03,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 00:38:03,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 00:38:03,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 00:38:03,191 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 00:38:03,191 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 00:38:03,192 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label45+token_ring.05.cil-2.c [2023-12-16 00:38:04,236 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 00:38:04,794 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 00:38:04,795 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label45+token_ring.05.cil-2.c [2023-12-16 00:38:04,834 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a3ab7f3b/0d0c40fa7b584f0ab631893334159d1e/FLAGd07cb6802 [2023-12-16 00:38:04,845 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a3ab7f3b/0d0c40fa7b584f0ab631893334159d1e [2023-12-16 00:38:04,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 00:38:04,849 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 00:38:04,851 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 00:38:04,852 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 00:38:04,855 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 00:38:04,856 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:38:04" (1/1) ... [2023-12-16 00:38:04,857 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@256ae4ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:38:04, skipping insertion in model container [2023-12-16 00:38:04,857 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:38:04" (1/1) ... [2023-12-16 00:38:05,008 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 00:38:06,344 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_label45+token_ring.05.cil-2.c[380323,380336] [2023-12-16 00:38:06,369 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_label45+token_ring.05.cil-2.c[383339,383352] [2023-12-16 00:38:06,509 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:38:06,519 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 00:38:07,098 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_label45+token_ring.05.cil-2.c[380323,380336] [2023-12-16 00:38:07,102 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_label45+token_ring.05.cil-2.c[383339,383352] [2023-12-16 00:38:07,120 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:38:07,190 INFO L206 MainTranslator]: Completed translation [2023-12-16 00:38:07,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:38:07 WrapperNode [2023-12-16 00:38:07,190 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 00:38:07,191 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 00:38:07,191 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 00:38:07,191 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 00:38:07,197 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:38:07" (1/1) ... [2023-12-16 00:38:07,282 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:38:07" (1/1) ... [2023-12-16 00:38:07,523 INFO L138 Inliner]: procedures = 54, calls = 57, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 12819 [2023-12-16 00:38:07,524 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 00:38:07,524 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 00:38:07,524 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 00:38:07,525 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 00:38:07,533 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:38:07" (1/1) ... [2023-12-16 00:38:07,533 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:38:07" (1/1) ... [2023-12-16 00:38:07,572 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:38:07" (1/1) ... [2023-12-16 00:38:07,664 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]. [2023-12-16 00:38:07,665 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:38:07" (1/1) ... [2023-12-16 00:38:07,665 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:38:07" (1/1) ... [2023-12-16 00:38:07,868 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:38:07" (1/1) ... [2023-12-16 00:38:07,904 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:38:07" (1/1) ... [2023-12-16 00:38:07,928 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:38:07" (1/1) ... [2023-12-16 00:38:07,946 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:38:07" (1/1) ... [2023-12-16 00:38:07,998 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 00:38:07,999 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 00:38:07,999 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 00:38:07,999 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 00:38:08,000 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:38:07" (1/1) ... [2023-12-16 00:38:08,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:38:08,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:38:08,022 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) [2023-12-16 00:38:08,028 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 [2023-12-16 00:38:08,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 00:38:08,045 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-16 00:38:08,045 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-16 00:38:08,046 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-16 00:38:08,047 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-16 00:38:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-16 00:38:08,047 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-16 00:38:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-16 00:38:08,047 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-16 00:38:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-16 00:38:08,047 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-16 00:38:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-16 00:38:08,047 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-16 00:38:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-16 00:38:08,047 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-16 00:38:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 00:38:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 00:38:08,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 00:38:08,266 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 00:38:08,268 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 00:38:13,746 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 00:38:13,835 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 00:38:13,836 INFO L309 CfgBuilder]: Removed 9 assume(true) statements. [2023-12-16 00:38:13,836 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:38:13 BoogieIcfgContainer [2023-12-16 00:38:13,836 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 00:38:13,839 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 00:38:13,839 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 00:38:13,841 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 00:38:13,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:38:04" (1/3) ... [2023-12-16 00:38:13,842 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd7a0ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:38:13, skipping insertion in model container [2023-12-16 00:38:13,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:38:07" (2/3) ... [2023-12-16 00:38:13,843 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd7a0ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:38:13, skipping insertion in model container [2023-12-16 00:38:13,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:38:13" (3/3) ... [2023-12-16 00:38:13,843 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.05.cil-2.c [2023-12-16 00:38:13,856 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 00:38:13,857 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-16 00:38:13,936 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 00:38:13,942 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;@4e8da132, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 00:38:13,943 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-16 00:38:13,952 INFO L276 IsEmpty]: Start isEmpty. Operand has 2318 states, 2287 states have (on average 1.8828159160472235) internal successors, (4306), 2292 states have internal predecessors, (4306), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-16 00:38:13,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-16 00:38:13,963 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:38:13,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:38:13,964 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:38:13,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:38:13,967 INFO L85 PathProgramCache]: Analyzing trace with hash 945865180, now seen corresponding path program 1 times [2023-12-16 00:38:13,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:38:13,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136154398] [2023-12-16 00:38:13,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:38:13,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:38:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:14,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:38:14,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:14,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 00:38:14,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:14,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 00:38:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:14,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 00:38:14,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:14,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 00:38:14,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:14,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:38:14,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:38:14,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136154398] [2023-12-16 00:38:14,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136154398] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:38:14,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:38:14,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 00:38:14,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59827688] [2023-12-16 00:38:14,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:38:14,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 00:38:14,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:38:14,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 00:38:14,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 00:38:14,324 INFO L87 Difference]: Start difference. First operand has 2318 states, 2287 states have (on average 1.8828159160472235) internal successors, (4306), 2292 states have internal predecessors, (4306), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 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) [2023-12-16 00:38:15,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:38:15,188 INFO L93 Difference]: Finished difference Result 4689 states and 8790 transitions. [2023-12-16 00:38:15,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 00:38:15,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 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 92 [2023-12-16 00:38:15,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:38:15,207 INFO L225 Difference]: With dead ends: 4689 [2023-12-16 00:38:15,207 INFO L226 Difference]: Without dead ends: 2373 [2023-12-16 00:38:15,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 00:38:15,216 INFO L413 NwaCegarLoop]: 4135 mSDtfsCounter, 494 mSDsluCounter, 12068 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 16203 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 00:38:15,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 16203 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 00:38:15,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2023-12-16 00:38:15,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 2313. [2023-12-16 00:38:15,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2313 states, 2284 states have (on average 1.8476357267950962) internal successors, (4220), 2287 states have internal predecessors, (4220), 21 states have call successors, (21), 7 states have call predecessors, (21), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-16 00:38:15,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2313 states to 2313 states and 4260 transitions. [2023-12-16 00:38:15,305 INFO L78 Accepts]: Start accepts. Automaton has 2313 states and 4260 transitions. Word has length 92 [2023-12-16 00:38:15,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:38:15,305 INFO L495 AbstractCegarLoop]: Abstraction has 2313 states and 4260 transitions. [2023-12-16 00:38:15,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 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) [2023-12-16 00:38:15,306 INFO L276 IsEmpty]: Start isEmpty. Operand 2313 states and 4260 transitions. [2023-12-16 00:38:15,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-16 00:38:15,308 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:38:15,308 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] [2023-12-16 00:38:15,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 00:38:15,309 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:38:15,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:38:15,309 INFO L85 PathProgramCache]: Analyzing trace with hash -378991014, now seen corresponding path program 1 times [2023-12-16 00:38:15,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:38:15,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143716194] [2023-12-16 00:38:15,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:38:15,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:38:15,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:15,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:38:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:15,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 00:38:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:15,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 00:38:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:15,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 00:38:15,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:15,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 00:38:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:15,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:38:15,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:38:15,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143716194] [2023-12-16 00:38:15,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143716194] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:38:15,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:38:15,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 00:38:15,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760881690] [2023-12-16 00:38:15,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:38:15,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 00:38:15,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:38:15,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 00:38:15,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 00:38:15,477 INFO L87 Difference]: Start difference. First operand 2313 states and 4260 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2023-12-16 00:38:16,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:38:16,703 INFO L93 Difference]: Finished difference Result 2800 states and 5052 transitions. [2023-12-16 00:38:16,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 00:38:16,704 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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 92 [2023-12-16 00:38:16,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:38:16,716 INFO L225 Difference]: With dead ends: 2800 [2023-12-16 00:38:16,717 INFO L226 Difference]: Without dead ends: 2619 [2023-12-16 00:38:16,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-16 00:38:16,719 INFO L413 NwaCegarLoop]: 4114 mSDtfsCounter, 4687 mSDsluCounter, 12324 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4699 SdHoareTripleChecker+Valid, 16438 SdHoareTripleChecker+Invalid, 1208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:38:16,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4699 Valid, 16438 Invalid, 1208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 00:38:16,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2023-12-16 00:38:16,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 2498. [2023-12-16 00:38:16,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2448 states have (on average 1.8321078431372548) internal successors, (4485), 2452 states have internal predecessors, (4485), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2023-12-16 00:38:16,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 4556 transitions. [2023-12-16 00:38:16,769 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 4556 transitions. Word has length 92 [2023-12-16 00:38:16,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:38:16,769 INFO L495 AbstractCegarLoop]: Abstraction has 2498 states and 4556 transitions. [2023-12-16 00:38:16,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2023-12-16 00:38:16,770 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 4556 transitions. [2023-12-16 00:38:16,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-16 00:38:16,771 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:38:16,771 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] [2023-12-16 00:38:16,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 00:38:16,771 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:38:16,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:38:16,772 INFO L85 PathProgramCache]: Analyzing trace with hash 482674902, now seen corresponding path program 1 times [2023-12-16 00:38:16,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:38:16,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585088569] [2023-12-16 00:38:16,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:38:16,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:38:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:16,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:38:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:16,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 00:38:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:16,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 00:38:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:16,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 00:38:16,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:16,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 00:38:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:16,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:38:16,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:38:16,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585088569] [2023-12-16 00:38:16,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585088569] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:38:16,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:38:16,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:38:16,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089303068] [2023-12-16 00:38:16,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:38:16,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:38:16,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:38:16,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:38:16,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:38:16,940 INFO L87 Difference]: Start difference. First operand 2498 states and 4556 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-16 00:38:18,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:38:18,371 INFO L93 Difference]: Finished difference Result 3235 states and 5750 transitions. [2023-12-16 00:38:18,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 00:38:18,372 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 92 [2023-12-16 00:38:18,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:38:18,381 INFO L225 Difference]: With dead ends: 3235 [2023-12-16 00:38:18,381 INFO L226 Difference]: Without dead ends: 2869 [2023-12-16 00:38:18,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-16 00:38:18,384 INFO L413 NwaCegarLoop]: 4232 mSDtfsCounter, 4702 mSDsluCounter, 16709 mSDsCounter, 0 mSdLazyCounter, 1837 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4714 SdHoareTripleChecker+Valid, 20941 SdHoareTripleChecker+Invalid, 1888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:38:18,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4714 Valid, 20941 Invalid, 1888 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [51 Valid, 1837 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 00:38:18,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2869 states. [2023-12-16 00:38:18,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2869 to 2670. [2023-12-16 00:38:18,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2599 states have (on average 1.8176221623701423) internal successors, (4724), 2604 states have internal predecessors, (4724), 49 states have call successors, (49), 19 states have call predecessors, (49), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-12-16 00:38:18,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4825 transitions. [2023-12-16 00:38:18,442 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4825 transitions. Word has length 92 [2023-12-16 00:38:18,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:38:18,443 INFO L495 AbstractCegarLoop]: Abstraction has 2670 states and 4825 transitions. [2023-12-16 00:38:18,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-16 00:38:18,443 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4825 transitions. [2023-12-16 00:38:18,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-16 00:38:18,444 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:38:18,444 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] [2023-12-16 00:38:18,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 00:38:18,444 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:38:18,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:38:18,445 INFO L85 PathProgramCache]: Analyzing trace with hash 509740504, now seen corresponding path program 1 times [2023-12-16 00:38:18,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:38:18,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090859284] [2023-12-16 00:38:18,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:38:18,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:38:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:18,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:38:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:18,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 00:38:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:18,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 00:38:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:18,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 00:38:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:18,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 00:38:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:18,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:38:18,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:38:18,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090859284] [2023-12-16 00:38:18,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090859284] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:38:18,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:38:18,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:38:18,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947953669] [2023-12-16 00:38:18,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:38:18,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:38:18,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:38:18,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:38:18,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:38:18,624 INFO L87 Difference]: Start difference. First operand 2670 states and 4825 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-16 00:38:19,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:38:19,445 INFO L93 Difference]: Finished difference Result 3409 states and 6031 transitions. [2023-12-16 00:38:19,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 00:38:19,446 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 92 [2023-12-16 00:38:19,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:38:19,455 INFO L225 Difference]: With dead ends: 3409 [2023-12-16 00:38:19,455 INFO L226 Difference]: Without dead ends: 2871 [2023-12-16 00:38:19,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-16 00:38:19,458 INFO L413 NwaCegarLoop]: 4101 mSDtfsCounter, 4506 mSDsluCounter, 16262 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4519 SdHoareTripleChecker+Valid, 20363 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 00:38:19,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4519 Valid, 20363 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 00:38:19,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2023-12-16 00:38:19,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 2670. [2023-12-16 00:38:19,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2599 states have (on average 1.816467872258561) internal successors, (4721), 2604 states have internal predecessors, (4721), 49 states have call successors, (49), 19 states have call predecessors, (49), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-12-16 00:38:19,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4822 transitions. [2023-12-16 00:38:19,538 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4822 transitions. Word has length 92 [2023-12-16 00:38:19,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:38:19,539 INFO L495 AbstractCegarLoop]: Abstraction has 2670 states and 4822 transitions. [2023-12-16 00:38:19,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-16 00:38:19,539 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4822 transitions. [2023-12-16 00:38:19,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-16 00:38:19,540 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:38:19,540 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] [2023-12-16 00:38:19,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 00:38:19,540 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:38:19,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:38:19,541 INFO L85 PathProgramCache]: Analyzing trace with hash -2051122342, now seen corresponding path program 1 times [2023-12-16 00:38:19,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:38:19,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095005831] [2023-12-16 00:38:19,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:38:19,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:38:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:19,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:38:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:19,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 00:38:19,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:19,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 00:38:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:19,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 00:38:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:19,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 00:38:19,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:19,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:38:19,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:38:19,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095005831] [2023-12-16 00:38:19,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095005831] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:38:19,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:38:19,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:38:19,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940342480] [2023-12-16 00:38:19,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:38:19,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:38:19,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:38:19,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:38:19,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:38:19,652 INFO L87 Difference]: Start difference. First operand 2670 states and 4822 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-16 00:38:20,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:38:20,443 INFO L93 Difference]: Finished difference Result 3405 states and 6014 transitions. [2023-12-16 00:38:20,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 00:38:20,444 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 92 [2023-12-16 00:38:20,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:38:20,452 INFO L225 Difference]: With dead ends: 3405 [2023-12-16 00:38:20,453 INFO L226 Difference]: Without dead ends: 2867 [2023-12-16 00:38:20,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-16 00:38:20,455 INFO L413 NwaCegarLoop]: 4101 mSDtfsCounter, 4504 mSDsluCounter, 16262 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4517 SdHoareTripleChecker+Valid, 20363 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 00:38:20,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4517 Valid, 20363 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 00:38:20,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2867 states. [2023-12-16 00:38:20,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2867 to 2670. [2023-12-16 00:38:20,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2599 states have (on average 1.8153135821469797) internal successors, (4718), 2604 states have internal predecessors, (4718), 49 states have call successors, (49), 19 states have call predecessors, (49), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-12-16 00:38:20,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4819 transitions. [2023-12-16 00:38:20,517 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4819 transitions. Word has length 92 [2023-12-16 00:38:20,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:38:20,517 INFO L495 AbstractCegarLoop]: Abstraction has 2670 states and 4819 transitions. [2023-12-16 00:38:20,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-16 00:38:20,517 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4819 transitions. [2023-12-16 00:38:20,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-16 00:38:20,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:38:20,518 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] [2023-12-16 00:38:20,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 00:38:20,519 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:38:20,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:38:20,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1163899496, now seen corresponding path program 1 times [2023-12-16 00:38:20,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:38:20,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495800617] [2023-12-16 00:38:20,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:38:20,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:38:20,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:20,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:38:20,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:20,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 00:38:20,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:20,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 00:38:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:20,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 00:38:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:20,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 00:38:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:20,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:38:20,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:38:20,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495800617] [2023-12-16 00:38:20,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495800617] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:38:20,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:38:20,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:38:20,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922145730] [2023-12-16 00:38:20,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:38:20,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:38:20,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:38:20,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:38:20,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:38:20,621 INFO L87 Difference]: Start difference. First operand 2670 states and 4819 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-16 00:38:21,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:38:21,413 INFO L93 Difference]: Finished difference Result 3401 states and 5997 transitions. [2023-12-16 00:38:21,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 00:38:21,415 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 92 [2023-12-16 00:38:21,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:38:21,424 INFO L225 Difference]: With dead ends: 3401 [2023-12-16 00:38:21,424 INFO L226 Difference]: Without dead ends: 2863 [2023-12-16 00:38:21,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-16 00:38:21,427 INFO L413 NwaCegarLoop]: 4101 mSDtfsCounter, 4502 mSDsluCounter, 16262 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4515 SdHoareTripleChecker+Valid, 20363 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 00:38:21,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4515 Valid, 20363 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 00:38:21,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states. [2023-12-16 00:38:21,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 2670. [2023-12-16 00:38:21,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2599 states have (on average 1.8141592920353982) internal successors, (4715), 2604 states have internal predecessors, (4715), 49 states have call successors, (49), 19 states have call predecessors, (49), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-12-16 00:38:21,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4816 transitions. [2023-12-16 00:38:21,604 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4816 transitions. Word has length 92 [2023-12-16 00:38:21,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:38:21,605 INFO L495 AbstractCegarLoop]: Abstraction has 2670 states and 4816 transitions. [2023-12-16 00:38:21,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-16 00:38:21,605 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4816 transitions. [2023-12-16 00:38:21,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-16 00:38:21,606 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:38:21,606 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] [2023-12-16 00:38:21,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 00:38:21,606 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:38:21,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:38:21,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1220025242, now seen corresponding path program 1 times [2023-12-16 00:38:21,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:38:21,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713421169] [2023-12-16 00:38:21,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:38:21,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:38:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:21,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:38:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:21,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 00:38:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:21,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 00:38:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:21,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 00:38:21,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:21,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 00:38:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:21,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:38:21,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:38:21,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713421169] [2023-12-16 00:38:21,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713421169] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:38:21,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:38:21,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:38:21,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615936850] [2023-12-16 00:38:21,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:38:21,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:38:21,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:38:21,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:38:21,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:38:21,720 INFO L87 Difference]: Start difference. First operand 2670 states and 4816 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-16 00:38:23,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:38:23,073 INFO L93 Difference]: Finished difference Result 3995 states and 6919 transitions. [2023-12-16 00:38:23,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 00:38:23,074 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 92 [2023-12-16 00:38:23,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:38:23,085 INFO L225 Difference]: With dead ends: 3995 [2023-12-16 00:38:23,085 INFO L226 Difference]: Without dead ends: 3457 [2023-12-16 00:38:23,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-16 00:38:23,088 INFO L413 NwaCegarLoop]: 4125 mSDtfsCounter, 4914 mSDsluCounter, 16416 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4932 SdHoareTripleChecker+Valid, 20541 SdHoareTripleChecker+Invalid, 1538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:38:23,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4932 Valid, 20541 Invalid, 1538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1456 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 00:38:23,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3457 states. [2023-12-16 00:38:23,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3457 to 3023. [2023-12-16 00:38:23,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3023 states, 2912 states have (on average 1.7870879120879122) internal successors, (5204), 2919 states have internal predecessors, (5204), 75 states have call successors, (75), 31 states have call predecessors, (75), 34 states have return successors, (86), 76 states have call predecessors, (86), 73 states have call successors, (86) [2023-12-16 00:38:23,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3023 states to 3023 states and 5365 transitions. [2023-12-16 00:38:23,189 INFO L78 Accepts]: Start accepts. Automaton has 3023 states and 5365 transitions. Word has length 92 [2023-12-16 00:38:23,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:38:23,189 INFO L495 AbstractCegarLoop]: Abstraction has 3023 states and 5365 transitions. [2023-12-16 00:38:23,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-16 00:38:23,191 INFO L276 IsEmpty]: Start isEmpty. Operand 3023 states and 5365 transitions. [2023-12-16 00:38:23,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-16 00:38:23,192 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:38:23,192 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] [2023-12-16 00:38:23,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 00:38:23,192 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:38:23,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:38:23,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1296926040, now seen corresponding path program 1 times [2023-12-16 00:38:23,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:38:23,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019511704] [2023-12-16 00:38:23,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:38:23,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:38:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:23,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:38:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:23,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 00:38:23,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:23,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 00:38:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:23,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 00:38:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:23,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 00:38:23,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:23,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:38:23,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:38:23,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019511704] [2023-12-16 00:38:23,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019511704] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:38:23,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:38:23,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:38:23,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18884339] [2023-12-16 00:38:23,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:38:23,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:38:23,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:38:23,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:38:23,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:38:23,318 INFO L87 Difference]: Start difference. First operand 3023 states and 5365 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-16 00:38:24,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:38:24,791 INFO L93 Difference]: Finished difference Result 5308 states and 8978 transitions. [2023-12-16 00:38:24,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 00:38:24,791 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 92 [2023-12-16 00:38:24,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:38:24,819 INFO L225 Difference]: With dead ends: 5308 [2023-12-16 00:38:24,819 INFO L226 Difference]: Without dead ends: 4417 [2023-12-16 00:38:24,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-16 00:38:24,823 INFO L413 NwaCegarLoop]: 4227 mSDtfsCounter, 4711 mSDsluCounter, 16701 mSDsCounter, 0 mSdLazyCounter, 2002 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4722 SdHoareTripleChecker+Valid, 20928 SdHoareTripleChecker+Invalid, 2057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:38:24,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4722 Valid, 20928 Invalid, 2057 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 2002 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 00:38:24,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4417 states. [2023-12-16 00:38:24,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4417 to 3680. [2023-12-16 00:38:24,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3680 states, 3491 states have (on average 1.7462045259238042) internal successors, (6096), 3502 states have internal predecessors, (6096), 125 states have call successors, (125), 55 states have call predecessors, (125), 62 states have return successors, (158), 130 states have call predecessors, (158), 123 states have call successors, (158) [2023-12-16 00:38:24,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3680 states to 3680 states and 6379 transitions. [2023-12-16 00:38:24,913 INFO L78 Accepts]: Start accepts. Automaton has 3680 states and 6379 transitions. Word has length 92 [2023-12-16 00:38:24,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:38:24,913 INFO L495 AbstractCegarLoop]: Abstraction has 3680 states and 6379 transitions. [2023-12-16 00:38:24,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-16 00:38:24,914 INFO L276 IsEmpty]: Start isEmpty. Operand 3680 states and 6379 transitions. [2023-12-16 00:38:24,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-16 00:38:24,916 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:38:24,916 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] [2023-12-16 00:38:24,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 00:38:24,917 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:38:24,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:38:24,917 INFO L85 PathProgramCache]: Analyzing trace with hash 329575386, now seen corresponding path program 1 times [2023-12-16 00:38:24,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:38:24,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69455280] [2023-12-16 00:38:24,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:38:24,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:38:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:24,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:38:24,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:24,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 00:38:24,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:25,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 00:38:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:25,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 00:38:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:25,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 00:38:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:25,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:38:25,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:38:25,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69455280] [2023-12-16 00:38:25,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69455280] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:38:25,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:38:25,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:38:25,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216095622] [2023-12-16 00:38:25,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:38:25,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:38:25,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:38:25,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:38:25,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:38:25,029 INFO L87 Difference]: Start difference. First operand 3680 states and 6379 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-16 00:38:26,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:38:26,480 INFO L93 Difference]: Finished difference Result 7751 states and 12786 transitions. [2023-12-16 00:38:26,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 00:38:26,481 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 92 [2023-12-16 00:38:26,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:38:26,497 INFO L225 Difference]: With dead ends: 7751 [2023-12-16 00:38:26,498 INFO L226 Difference]: Without dead ends: 6203 [2023-12-16 00:38:26,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-16 00:38:26,504 INFO L413 NwaCegarLoop]: 4228 mSDtfsCounter, 4792 mSDsluCounter, 16704 mSDsCounter, 0 mSdLazyCounter, 1705 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4810 SdHoareTripleChecker+Valid, 20932 SdHoareTripleChecker+Invalid, 1761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:38:26,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4810 Valid, 20932 Invalid, 1761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1705 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 00:38:26,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6203 states. [2023-12-16 00:38:26,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6203 to 5033. [2023-12-16 00:38:26,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5033 states, 4692 states have (on average 1.696078431372549) internal successors, (7958), 4711 states have internal predecessors, (7958), 221 states have call successors, (221), 103 states have call predecessors, (221), 118 states have return successors, (316), 234 states have call predecessors, (316), 219 states have call successors, (316) [2023-12-16 00:38:26,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5033 states to 5033 states and 8495 transitions. [2023-12-16 00:38:26,637 INFO L78 Accepts]: Start accepts. Automaton has 5033 states and 8495 transitions. Word has length 92 [2023-12-16 00:38:26,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:38:26,638 INFO L495 AbstractCegarLoop]: Abstraction has 5033 states and 8495 transitions. [2023-12-16 00:38:26,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-16 00:38:26,638 INFO L276 IsEmpty]: Start isEmpty. Operand 5033 states and 8495 transitions. [2023-12-16 00:38:26,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-16 00:38:26,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:38:26,641 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] [2023-12-16 00:38:26,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 00:38:26,641 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:38:26,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:38:26,641 INFO L85 PathProgramCache]: Analyzing trace with hash -2056934120, now seen corresponding path program 1 times [2023-12-16 00:38:26,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:38:26,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190495432] [2023-12-16 00:38:26,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:38:26,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:38:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:26,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:38:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:26,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 00:38:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:26,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 00:38:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:26,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 00:38:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:26,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 00:38:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:26,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:38:26,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:38:26,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190495432] [2023-12-16 00:38:26,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190495432] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:38:26,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:38:26,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:38:26,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525030457] [2023-12-16 00:38:26,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:38:26,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:38:26,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:38:26,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:38:26,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:38:26,760 INFO L87 Difference]: Start difference. First operand 5033 states and 8495 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-16 00:38:28,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:38:28,179 INFO L93 Difference]: Finished difference Result 12630 states and 20476 transitions. [2023-12-16 00:38:28,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 00:38:28,180 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 92 [2023-12-16 00:38:28,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:38:28,201 INFO L225 Difference]: With dead ends: 12630 [2023-12-16 00:38:28,201 INFO L226 Difference]: Without dead ends: 9729 [2023-12-16 00:38:28,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-16 00:38:28,209 INFO L413 NwaCegarLoop]: 4228 mSDtfsCounter, 4762 mSDsluCounter, 16704 mSDsCounter, 0 mSdLazyCounter, 1687 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4780 SdHoareTripleChecker+Valid, 20932 SdHoareTripleChecker+Invalid, 1743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 00:38:28,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4780 Valid, 20932 Invalid, 1743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1687 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 00:38:28,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9729 states. [2023-12-16 00:38:28,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9729 to 7738. [2023-12-16 00:38:28,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7738 states, 7101 states have (on average 1.6470919588790311) internal successors, (11696), 7136 states have internal predecessors, (11696), 405 states have call successors, (405), 199 states have call predecessors, (405), 230 states have return successors, (678), 434 states have call predecessors, (678), 403 states have call successors, (678) [2023-12-16 00:38:28,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7738 states to 7738 states and 12779 transitions. [2023-12-16 00:38:28,427 INFO L78 Accepts]: Start accepts. Automaton has 7738 states and 12779 transitions. Word has length 92 [2023-12-16 00:38:28,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:38:28,428 INFO L495 AbstractCegarLoop]: Abstraction has 7738 states and 12779 transitions. [2023-12-16 00:38:28,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-16 00:38:28,428 INFO L276 IsEmpty]: Start isEmpty. Operand 7738 states and 12779 transitions. [2023-12-16 00:38:28,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-16 00:38:28,432 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:38:28,432 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] [2023-12-16 00:38:28,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 00:38:28,433 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:38:28,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:38:28,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1745407002, now seen corresponding path program 1 times [2023-12-16 00:38:28,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:38:28,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757541292] [2023-12-16 00:38:28,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:38:28,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:38:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:28,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:38:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:28,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 00:38:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:28,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 00:38:28,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:28,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 00:38:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:28,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 00:38:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:28,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:38:28,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:38:28,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757541292] [2023-12-16 00:38:28,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757541292] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:38:28,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:38:28,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:38:28,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982268845] [2023-12-16 00:38:28,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:38:28,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:38:28,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:38:28,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:38:28,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:38:28,544 INFO L87 Difference]: Start difference. First operand 7738 states and 12779 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-16 00:38:30,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:38:30,206 INFO L93 Difference]: Finished difference Result 21731 states and 35014 transitions. [2023-12-16 00:38:30,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 00:38:30,206 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 92 [2023-12-16 00:38:30,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:38:30,238 INFO L225 Difference]: With dead ends: 21731 [2023-12-16 00:38:30,238 INFO L226 Difference]: Without dead ends: 16125 [2023-12-16 00:38:30,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-16 00:38:30,249 INFO L413 NwaCegarLoop]: 4228 mSDtfsCounter, 4684 mSDsluCounter, 16704 mSDsCounter, 0 mSdLazyCounter, 1658 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4702 SdHoareTripleChecker+Valid, 20932 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:38:30,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4702 Valid, 20932 Invalid, 1715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1658 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 00:38:30,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16125 states. [2023-12-16 00:38:30,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16125 to 13180. [2023-12-16 00:38:30,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13180 states, 11967 states have (on average 1.6100944263390993) internal successors, (19268), 12034 states have internal predecessors, (19268), 757 states have call successors, (757), 391 states have call predecessors, (757), 454 states have return successors, (1548), 818 states have call predecessors, (1548), 755 states have call successors, (1548) [2023-12-16 00:38:30,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13180 states to 13180 states and 21573 transitions. [2023-12-16 00:38:30,656 INFO L78 Accepts]: Start accepts. Automaton has 13180 states and 21573 transitions. Word has length 92 [2023-12-16 00:38:30,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:38:30,656 INFO L495 AbstractCegarLoop]: Abstraction has 13180 states and 21573 transitions. [2023-12-16 00:38:30,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-16 00:38:30,656 INFO L276 IsEmpty]: Start isEmpty. Operand 13180 states and 21573 transitions. [2023-12-16 00:38:30,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-16 00:38:30,665 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:38:30,665 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] [2023-12-16 00:38:30,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 00:38:30,665 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:38:30,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:38:30,665 INFO L85 PathProgramCache]: Analyzing trace with hash 529253276, now seen corresponding path program 1 times [2023-12-16 00:38:30,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:38:30,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670334923] [2023-12-16 00:38:30,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:38:30,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:38:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:30,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:38:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:30,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 00:38:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:30,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 00:38:30,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:30,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 00:38:30,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:30,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 00:38:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:30,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:38:30,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:38:30,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670334923] [2023-12-16 00:38:30,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670334923] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:38:30,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:38:30,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 00:38:30,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733979015] [2023-12-16 00:38:30,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:38:30,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 00:38:30,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:38:30,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 00:38:30,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 00:38:30,759 INFO L87 Difference]: Start difference. First operand 13180 states and 21573 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2023-12-16 00:38:32,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:38:32,509 INFO L93 Difference]: Finished difference Result 33458 states and 53843 transitions. [2023-12-16 00:38:32,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 00:38:32,509 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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 92 [2023-12-16 00:38:32,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:38:32,566 INFO L225 Difference]: With dead ends: 33458 [2023-12-16 00:38:32,567 INFO L226 Difference]: Without dead ends: 22411 [2023-12-16 00:38:32,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-16 00:38:32,597 INFO L413 NwaCegarLoop]: 4260 mSDtfsCounter, 4889 mSDsluCounter, 12408 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4920 SdHoareTripleChecker+Valid, 16668 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 00:38:32,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4920 Valid, 16668 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1468 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 00:38:32,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22411 states. [2023-12-16 00:38:33,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22411 to 18624. [2023-12-16 00:38:33,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18624 states, 16782 states have (on average 1.5839590036944344) internal successors, (26582), 16914 states have internal predecessors, (26582), 1156 states have call successors, (1156), 589 states have call predecessors, (1156), 684 states have return successors, (2191), 1184 states have call predecessors, (2191), 1154 states have call successors, (2191) [2023-12-16 00:38:33,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18624 states to 18624 states and 29929 transitions. [2023-12-16 00:38:33,211 INFO L78 Accepts]: Start accepts. Automaton has 18624 states and 29929 transitions. Word has length 92 [2023-12-16 00:38:33,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:38:33,212 INFO L495 AbstractCegarLoop]: Abstraction has 18624 states and 29929 transitions. [2023-12-16 00:38:33,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2023-12-16 00:38:33,212 INFO L276 IsEmpty]: Start isEmpty. Operand 18624 states and 29929 transitions. [2023-12-16 00:38:33,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-16 00:38:33,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:38:33,243 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:38:33,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 00:38:33,243 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:38:33,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:38:33,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1655270481, now seen corresponding path program 1 times [2023-12-16 00:38:33,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:38:33,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037516836] [2023-12-16 00:38:33,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:38:33,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:38:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:33,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:38:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:33,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 00:38:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:33,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 00:38:33,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:33,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 00:38:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:33,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 00:38:33,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:33,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 00:38:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:33,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:38:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:33,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 00:38:33,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:33,380 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 00:38:33,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:38:33,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037516836] [2023-12-16 00:38:33,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037516836] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:38:33,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870141471] [2023-12-16 00:38:33,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:38:33,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:38:33,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:38:33,383 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:38:33,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 00:38:33,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:33,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 00:38:33,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:38:33,612 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-16 00:38:33,612 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:38:33,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870141471] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:38:33,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 00:38:33,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-16 00:38:33,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919279349] [2023-12-16 00:38:33,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:38:33,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:38:33,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:38:33,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:38:33,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:38:33,614 INFO L87 Difference]: Start difference. First operand 18624 states and 29929 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 00:38:34,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:38:34,621 INFO L93 Difference]: Finished difference Result 51207 states and 81635 transitions. [2023-12-16 00:38:34,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:38:34,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 148 [2023-12-16 00:38:34,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:38:34,711 INFO L225 Difference]: With dead ends: 51207 [2023-12-16 00:38:34,711 INFO L226 Difference]: Without dead ends: 34716 [2023-12-16 00:38:34,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:38:34,753 INFO L413 NwaCegarLoop]: 4230 mSDtfsCounter, 4203 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4203 SdHoareTripleChecker+Valid, 4481 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:38:34,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4203 Valid, 4481 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:38:34,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34716 states. [2023-12-16 00:38:36,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34716 to 34614. [2023-12-16 00:38:36,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34614 states, 31040 states have (on average 1.562596649484536) internal successors, (48503), 31301 states have internal predecessors, (48503), 2206 states have call successors, (2206), 1175 states have call predecessors, (2206), 1366 states have return successors, (4215), 2201 states have call predecessors, (4215), 2204 states have call successors, (4215) [2023-12-16 00:38:36,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34614 states to 34614 states and 54924 transitions. [2023-12-16 00:38:36,132 INFO L78 Accepts]: Start accepts. Automaton has 34614 states and 54924 transitions. Word has length 148 [2023-12-16 00:38:36,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:38:36,132 INFO L495 AbstractCegarLoop]: Abstraction has 34614 states and 54924 transitions. [2023-12-16 00:38:36,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 00:38:36,132 INFO L276 IsEmpty]: Start isEmpty. Operand 34614 states and 54924 transitions. [2023-12-16 00:38:36,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-16 00:38:36,186 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:38:36,186 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:38:36,215 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 00:38:36,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-16 00:38:36,392 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:38:36,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:38:36,392 INFO L85 PathProgramCache]: Analyzing trace with hash -809491181, now seen corresponding path program 1 times [2023-12-16 00:38:36,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:38:36,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49757193] [2023-12-16 00:38:36,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:38:36,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:38:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:36,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:38:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:36,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 00:38:36,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:36,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 00:38:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:36,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 00:38:36,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:36,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 00:38:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:36,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 00:38:36,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:36,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:38:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:36,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 00:38:36,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:36,515 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 00:38:36,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:38:36,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49757193] [2023-12-16 00:38:36,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49757193] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:38:36,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598690173] [2023-12-16 00:38:36,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:38:36,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:38:36,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:38:36,516 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:38:36,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 00:38:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:36,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 00:38:36,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:38:36,707 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-16 00:38:36,707 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:38:36,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598690173] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:38:36,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 00:38:36,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-16 00:38:36,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051152438] [2023-12-16 00:38:36,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:38:36,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:38:36,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:38:36,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:38:36,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:38:36,710 INFO L87 Difference]: Start difference. First operand 34614 states and 54924 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 00:38:38,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:38:38,655 INFO L93 Difference]: Finished difference Result 98977 states and 156780 transitions. [2023-12-16 00:38:38,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:38:38,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 148 [2023-12-16 00:38:38,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:38:38,838 INFO L225 Difference]: With dead ends: 98977 [2023-12-16 00:38:38,838 INFO L226 Difference]: Without dead ends: 66496 [2023-12-16 00:38:38,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:38:38,903 INFO L413 NwaCegarLoop]: 4230 mSDtfsCounter, 4193 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4193 SdHoareTripleChecker+Valid, 4481 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:38:38,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4193 Valid, 4481 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:38:38,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66496 states. [2023-12-16 00:38:41,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66496 to 66296. [2023-12-16 00:38:41,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66296 states, 59260 states have (on average 1.5483462706716167) internal successors, (91755), 59779 states have internal predecessors, (91755), 4304 states have call successors, (4304), 2347 states have call predecessors, (4304), 2730 states have return successors, (8261), 4233 states have call predecessors, (8261), 4302 states have call successors, (8261) [2023-12-16 00:38:41,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66296 states to 66296 states and 104320 transitions. [2023-12-16 00:38:41,267 INFO L78 Accepts]: Start accepts. Automaton has 66296 states and 104320 transitions. Word has length 148 [2023-12-16 00:38:41,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:38:41,268 INFO L495 AbstractCegarLoop]: Abstraction has 66296 states and 104320 transitions. [2023-12-16 00:38:41,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 00:38:41,268 INFO L276 IsEmpty]: Start isEmpty. Operand 66296 states and 104320 transitions. [2023-12-16 00:38:41,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-16 00:38:41,340 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:38:41,341 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:38:41,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 00:38:41,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-16 00:38:41,546 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:38:41,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:38:41,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1463777195, now seen corresponding path program 1 times [2023-12-16 00:38:41,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:38:41,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974153719] [2023-12-16 00:38:41,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:38:41,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:38:41,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:41,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:38:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:41,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 00:38:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:41,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 00:38:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:41,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 00:38:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:41,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 00:38:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:41,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 00:38:41,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:41,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:38:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:41,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 00:38:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:41,658 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 00:38:41,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:38:41,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974153719] [2023-12-16 00:38:41,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974153719] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:38:41,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228294722] [2023-12-16 00:38:41,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:38:41,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:38:41,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:38:41,660 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:38:41,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 00:38:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:41,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 00:38:41,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:38:41,829 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-16 00:38:41,829 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:38:41,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228294722] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:38:41,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 00:38:41,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-16 00:38:41,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337157722] [2023-12-16 00:38:41,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:38:41,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:38:41,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:38:41,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:38:41,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:38:41,831 INFO L87 Difference]: Start difference. First operand 66296 states and 104320 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 00:38:46,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:38:46,190 INFO L93 Difference]: Finished difference Result 193419 states and 304886 transitions. [2023-12-16 00:38:46,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:38:46,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 148 [2023-12-16 00:38:46,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:38:46,852 INFO L225 Difference]: With dead ends: 193419 [2023-12-16 00:38:46,852 INFO L226 Difference]: Without dead ends: 129256 [2023-12-16 00:38:46,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:38:46,977 INFO L413 NwaCegarLoop]: 4230 mSDtfsCounter, 4208 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4208 SdHoareTripleChecker+Valid, 4481 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:38:46,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4208 Valid, 4481 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:38:47,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129256 states. [2023-12-16 00:38:51,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129256 to 128860. [2023-12-16 00:38:51,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128860 states, 115008 states have (on average 1.538840776293823) internal successors, (176979), 116043 states have internal predecessors, (176979), 8396 states have call successors, (8396), 4687 states have call predecessors, (8396), 5454 states have return successors, (16249), 8193 states have call predecessors, (16249), 8394 states have call successors, (16249) [2023-12-16 00:38:52,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128860 states to 128860 states and 201624 transitions. [2023-12-16 00:38:52,470 INFO L78 Accepts]: Start accepts. Automaton has 128860 states and 201624 transitions. Word has length 148 [2023-12-16 00:38:52,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:38:52,471 INFO L495 AbstractCegarLoop]: Abstraction has 128860 states and 201624 transitions. [2023-12-16 00:38:52,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 00:38:52,471 INFO L276 IsEmpty]: Start isEmpty. Operand 128860 states and 201624 transitions. [2023-12-16 00:38:52,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-16 00:38:52,635 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:38:52,635 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:38:52,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-16 00:38:52,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:38:52,841 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:38:52,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:38:52,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1076426963, now seen corresponding path program 1 times [2023-12-16 00:38:52,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:38:52,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219764654] [2023-12-16 00:38:52,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:38:52,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:38:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:52,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:38:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:52,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 00:38:52,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:53,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 00:38:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:53,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 00:38:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:53,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 00:38:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:53,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 00:38:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:53,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:38:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:53,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 00:38:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:53,191 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 00:38:53,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:38:53,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219764654] [2023-12-16 00:38:53,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219764654] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:38:53,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72628765] [2023-12-16 00:38:53,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:38:53,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:38:53,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:38:53,204 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:38:53,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 00:38:53,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:38:53,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 00:38:53,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:38:53,339 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-16 00:38:53,340 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:38:53,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72628765] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:38:53,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 00:38:53,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-16 00:38:53,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722040844] [2023-12-16 00:38:53,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:38:53,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:38:53,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:38:53,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:38:53,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:38:53,341 INFO L87 Difference]: Start difference. First operand 128860 states and 201624 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Received shutdown request... [2023-12-16 00:38:59,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:38:59,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:38:59,990 INFO L413 NwaCegarLoop]: 4472 mSDtfsCounter, 254 mSDsluCounter, 4230 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 8702 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:38:59,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 8702 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:38:59,993 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-16 00:38:59,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 00:39:00,010 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 00:39:00,011 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 00:39:00,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-16 00:39:00,200 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (128860states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (312745 states constructed, input type IntersectNwa). [2023-12-16 00:39:00,201 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-16 00:39:00,203 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:39:00,204 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 00:39:00,207 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 12:39:00 BoogieIcfgContainer [2023-12-16 00:39:00,207 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 00:39:00,209 INFO L158 Benchmark]: Toolchain (without parser) took 55358.82ms. Allocated memory was 215.0MB in the beginning and 6.7GB in the end (delta: 6.5GB). Free memory was 137.4MB in the beginning and 5.1GB in the end (delta: -4.9GB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2023-12-16 00:39:00,209 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 161.5MB. Free memory was 110.0MB in the beginning and 109.8MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 00:39:00,209 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2338.97ms. Allocated memory was 215.0MB in the beginning and 315.6MB in the end (delta: 100.7MB). Free memory was 137.4MB in the beginning and 214.2MB in the end (delta: -76.9MB). Peak memory consumption was 126.6MB. Max. memory is 8.0GB. [2023-12-16 00:39:00,210 INFO L158 Benchmark]: Boogie Procedure Inliner took 332.97ms. Allocated memory is still 315.6MB. Free memory was 214.2MB in the beginning and 133.5MB in the end (delta: 80.7MB). Peak memory consumption was 79.7MB. Max. memory is 8.0GB. [2023-12-16 00:39:00,210 INFO L158 Benchmark]: Boogie Preprocessor took 473.39ms. Allocated memory is still 315.6MB. Free memory was 133.5MB in the beginning and 129.3MB in the end (delta: 4.2MB). Peak memory consumption was 71.8MB. Max. memory is 8.0GB. [2023-12-16 00:39:00,213 INFO L158 Benchmark]: RCFGBuilder took 5838.35ms. Allocated memory was 315.6MB in the beginning and 950.0MB in the end (delta: 634.4MB). Free memory was 129.3MB in the beginning and 516.2MB in the end (delta: -386.9MB). Peak memory consumption was 261.1MB. Max. memory is 8.0GB. [2023-12-16 00:39:00,214 INFO L158 Benchmark]: TraceAbstraction took 46368.58ms. Allocated memory was 950.0MB in the beginning and 6.7GB in the end (delta: 5.8GB). Free memory was 515.2MB in the beginning and 5.1GB in the end (delta: -4.6GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2023-12-16 00:39:00,215 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 161.5MB. Free memory was 110.0MB in the beginning and 109.8MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 2338.97ms. Allocated memory was 215.0MB in the beginning and 315.6MB in the end (delta: 100.7MB). Free memory was 137.4MB in the beginning and 214.2MB in the end (delta: -76.9MB). Peak memory consumption was 126.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 332.97ms. Allocated memory is still 315.6MB. Free memory was 214.2MB in the beginning and 133.5MB in the end (delta: 80.7MB). Peak memory consumption was 79.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 473.39ms. Allocated memory is still 315.6MB. Free memory was 133.5MB in the beginning and 129.3MB in the end (delta: 4.2MB). Peak memory consumption was 71.8MB. Max. memory is 8.0GB. * RCFGBuilder took 5838.35ms. Allocated memory was 315.6MB in the beginning and 950.0MB in the end (delta: 634.4MB). Free memory was 129.3MB in the beginning and 516.2MB in the end (delta: -386.9MB). Peak memory consumption was 261.1MB. Max. memory is 8.0GB. * TraceAbstraction took 46368.58ms. Allocated memory was 950.0MB in the beginning and 6.7GB in the end (delta: 5.8GB). Free memory was 515.2MB in the beginning and 5.1GB in the end (delta: -4.6GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 11173]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 11173). Cancelled while NwaCegarLoop was constructing difference of abstraction (128860states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (312745 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 11088]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 11088). Cancelled while NwaCegarLoop was constructing difference of abstraction (128860states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (312745 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 2318 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 46.3s, OverallIterations: 16, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.4s, AutomataDifference: 30.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 65199 SdHoareTripleChecker+Valid, 10.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 65005 mSDsluCounter, 257749 SdHoareTripleChecker+Invalid, 8.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 190507 mSDsCounter, 747 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16414 IncrementalHoareTripleChecker+Invalid, 17161 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 747 mSolverCounterUnsat, 67242 mSDtfsCounter, 16414 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 975 GetRequests, 814 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=128860occurred in iteration=15, InterpolantAutomatonStates: 145, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 11.3s AutomataMinimizationTime, 15 MinimizatonAttempts, 12733 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 2288 NumberOfCodeBlocks, 2288 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 2268 ConstructedInterpolants, 0 QuantifiedInterpolants, 5025 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2588 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 20 InterpolantComputations, 16 PerfectInterpolantSequences, 228/344 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown