/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/Problem05_label42+token_ring.06.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-18 22:10:47,134 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-18 22:10:47,215 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-18 22:10:47,225 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-18 22:10:47,226 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-18 22:10:47,252 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-18 22:10:47,253 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-18 22:10:47,253 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-18 22:10:47,254 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-18 22:10:47,257 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-18 22:10:47,257 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-18 22:10:47,258 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-18 22:10:47,258 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-18 22:10:47,260 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-18 22:10:47,260 INFO L153 SettingsManager]: * Use SBE=true [2023-12-18 22:10:47,260 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-18 22:10:47,260 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-18 22:10:47,260 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-18 22:10:47,261 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-18 22:10:47,261 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-18 22:10:47,261 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-18 22:10:47,262 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-18 22:10:47,262 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-18 22:10:47,262 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-18 22:10:47,262 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-18 22:10:47,262 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-18 22:10:47,263 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-18 22:10:47,263 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-18 22:10:47,263 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-18 22:10:47,264 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-18 22:10:47,265 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-18 22:10:47,265 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-18 22:10:47,265 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 22:10:47,265 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-18 22:10:47,265 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-18 22:10:47,265 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-18 22:10:47,266 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-18 22:10:47,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-18 22:10:47,266 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-18 22:10:47,266 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-18 22:10:47,266 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-18 22:10:47,266 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-18 22:10:47,267 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-18 22:10:47,267 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-18 22:10:47,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-18 22:10:47,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-18 22:10:47,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-18 22:10:47,493 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-18 22:10:47,494 INFO L274 PluginConnector]: CDTParser initialized [2023-12-18 22:10:47,495 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label42+token_ring.06.cil-1.c [2023-12-18 22:10:48,563 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-18 22:10:49,163 INFO L384 CDTParser]: Found 1 translation units. [2023-12-18 22:10:49,164 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label42+token_ring.06.cil-1.c [2023-12-18 22:10:49,210 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3834aaa8/62b628526d64415893cdd01ceeff2058/FLAGfbb911b61 [2023-12-18 22:10:49,225 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3834aaa8/62b628526d64415893cdd01ceeff2058 [2023-12-18 22:10:49,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-18 22:10:49,228 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-18 22:10:49,231 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-18 22:10:49,231 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-18 22:10:49,235 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-18 22:10:49,235 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:10:49" (1/1) ... [2023-12-18 22:10:49,236 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b6efa1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:10:49, skipping insertion in model container [2023-12-18 22:10:49,236 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:10:49" (1/1) ... [2023-12-18 22:10:49,404 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-18 22:10:50,940 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_label42+token_ring.06.cil-1.c[378560,378573] [2023-12-18 22:10:50,967 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_label42+token_ring.06.cil-1.c[383339,383352] [2023-12-18 22:10:51,129 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 22:10:51,143 INFO L202 MainTranslator]: Completed pre-run [2023-12-18 22:10:51,899 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_label42+token_ring.06.cil-1.c[378560,378573] [2023-12-18 22:10:51,914 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_label42+token_ring.06.cil-1.c[383339,383352] [2023-12-18 22:10:51,934 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 22:10:51,989 INFO L206 MainTranslator]: Completed translation [2023-12-18 22:10:51,990 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:10:51 WrapperNode [2023-12-18 22:10:51,990 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-18 22:10:51,992 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-18 22:10:51,992 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-18 22:10:51,992 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-18 22:10:51,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:10:51" (1/1) ... [2023-12-18 22:10:52,097 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:10:51" (1/1) ... [2023-12-18 22:10:52,510 INFO L138 Inliner]: procedures = 56, calls = 60, calls flagged for inlining = 33, calls inlined = 33, statements flattened = 12879 [2023-12-18 22:10:52,511 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-18 22:10:52,512 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-18 22:10:52,512 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-18 22:10:52,512 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-18 22:10:52,522 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:10:51" (1/1) ... [2023-12-18 22:10:52,522 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:10:51" (1/1) ... [2023-12-18 22:10:52,640 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:10:51" (1/1) ... [2023-12-18 22:10:52,734 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]. [2023-12-18 22:10:52,734 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:10:51" (1/1) ... [2023-12-18 22:10:52,735 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:10:51" (1/1) ... [2023-12-18 22:10:52,926 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:10:51" (1/1) ... [2023-12-18 22:10:52,976 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:10:51" (1/1) ... [2023-12-18 22:10:53,007 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:10:51" (1/1) ... [2023-12-18 22:10:53,031 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:10:51" (1/1) ... [2023-12-18 22:10:53,083 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-18 22:10:53,084 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-18 22:10:53,085 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-18 22:10:53,085 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-18 22:10:53,086 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:10:51" (1/1) ... [2023-12-18 22:10:53,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 22:10:53,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:10:53,110 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) [2023-12-18 22:10:53,114 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 [2023-12-18 22:10:53,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-18 22:10:53,132 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-18 22:10:53,132 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-18 22:10:53,132 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-18 22:10:53,132 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-18 22:10:53,132 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-18 22:10:53,132 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-18 22:10:53,132 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-18 22:10:53,132 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-18 22:10:53,132 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-18 22:10:53,133 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-18 22:10:53,133 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-18 22:10:53,133 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-18 22:10:53,133 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-18 22:10:53,133 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-18 22:10:53,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-18 22:10:53,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-18 22:10:53,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-18 22:10:53,255 INFO L241 CfgBuilder]: Building ICFG [2023-12-18 22:10:53,257 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-18 22:10:59,874 INFO L282 CfgBuilder]: Performing block encoding [2023-12-18 22:10:59,961 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-18 22:10:59,961 INFO L309 CfgBuilder]: Removed 10 assume(true) statements. [2023-12-18 22:10:59,962 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:10:59 BoogieIcfgContainer [2023-12-18 22:10:59,962 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-18 22:10:59,964 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-18 22:10:59,965 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-18 22:10:59,967 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-18 22:10:59,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 10:10:49" (1/3) ... [2023-12-18 22:10:59,968 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@353a6458 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:10:59, skipping insertion in model container [2023-12-18 22:10:59,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:10:51" (2/3) ... [2023-12-18 22:10:59,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@353a6458 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:10:59, skipping insertion in model container [2023-12-18 22:10:59,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:10:59" (3/3) ... [2023-12-18 22:10:59,970 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.06.cil-1.c [2023-12-18 22:10:59,985 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-18 22:10:59,985 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-18 22:11:00,058 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-18 22:11:00,063 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;@47073589, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-18 22:11:00,063 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-18 22:11:00,074 INFO L276 IsEmpty]: Start isEmpty. Operand has 2341 states, 2309 states have (on average 1.8817669987007362) internal successors, (4345), 2314 states have internal predecessors, (4345), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-18 22:11:00,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-18 22:11:00,087 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:11:00,087 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:11:00,088 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:11:00,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:11:00,092 INFO L85 PathProgramCache]: Analyzing trace with hash 683046169, now seen corresponding path program 1 times [2023-12-18 22:11:00,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:11:00,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233962748] [2023-12-18 22:11:00,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:11:00,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:11:00,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:00,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:11:00,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:00,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 22:11:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:00,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-18 22:11:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:00,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-18 22:11:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:00,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-18 22:11:00,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:00,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:11:00,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:11:00,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233962748] [2023-12-18 22:11:00,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233962748] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:11:00,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:11:00,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 22:11:00,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859819303] [2023-12-18 22:11:00,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:11:00,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 22:11:00,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:11:00,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 22:11:00,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-18 22:11:00,473 INFO L87 Difference]: Start difference. First operand has 2341 states, 2309 states have (on average 1.8817669987007362) internal successors, (4345), 2314 states have internal predecessors, (4345), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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) [2023-12-18 22:11:01,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:11:01,588 INFO L93 Difference]: Finished difference Result 4743 states and 8886 transitions. [2023-12-18 22:11:01,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 22:11:01,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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 102 [2023-12-18 22:11:01,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:11:01,621 INFO L225 Difference]: With dead ends: 4743 [2023-12-18 22:11:01,621 INFO L226 Difference]: Without dead ends: 2406 [2023-12-18 22:11:01,632 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 [2023-12-18 22:11:01,636 INFO L413 NwaCegarLoop]: 4154 mSDtfsCounter, 567 mSDsluCounter, 12090 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 16244 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-18 22:11:01,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 16244 Invalid, 648 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-18 22:11:01,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2406 states. [2023-12-18 22:11:01,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2406 to 2336. [2023-12-18 22:11:01,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2336 states, 2306 states have (on average 1.8460537727666955) internal successors, (4257), 2309 states have internal predecessors, (4257), 22 states have call successors, (22), 7 states have call predecessors, (22), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-18 22:11:01,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 4299 transitions. [2023-12-18 22:11:01,782 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 4299 transitions. Word has length 102 [2023-12-18 22:11:01,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:11:01,782 INFO L495 AbstractCegarLoop]: Abstraction has 2336 states and 4299 transitions. [2023-12-18 22:11:01,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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) [2023-12-18 22:11:01,783 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 4299 transitions. [2023-12-18 22:11:01,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-18 22:11:01,785 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:11:01,786 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:11:01,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-18 22:11:01,786 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:11:01,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:11:01,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1671339113, now seen corresponding path program 1 times [2023-12-18 22:11:01,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:11:01,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638081030] [2023-12-18 22:11:01,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:11:01,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:11:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:02,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:11:02,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:02,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 22:11:02,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:02,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-18 22:11:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:02,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-18 22:11:02,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:02,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-18 22:11:02,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:02,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:11:02,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:11:02,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638081030] [2023-12-18 22:11:02,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638081030] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:11:02,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:11:02,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:11:02,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127955906] [2023-12-18 22:11:02,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:11:02,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:11:02,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:11:02,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:11:02,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:11:02,269 INFO L87 Difference]: Start difference. First operand 2336 states and 4299 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-18 22:11:04,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:11:04,536 INFO L93 Difference]: Finished difference Result 2902 states and 5234 transitions. [2023-12-18 22:11:04,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:11:04,537 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2023-12-18 22:11:04,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:11:04,553 INFO L225 Difference]: With dead ends: 2902 [2023-12-18 22:11:04,553 INFO L226 Difference]: Without dead ends: 2699 [2023-12-18 22:11:04,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:11:04,557 INFO L413 NwaCegarLoop]: 4263 mSDtfsCounter, 4757 mSDsluCounter, 16816 mSDsCounter, 0 mSdLazyCounter, 2187 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4770 SdHoareTripleChecker+Valid, 21079 SdHoareTripleChecker+Invalid, 2245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-18 22:11:04,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4770 Valid, 21079 Invalid, 2245 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 2187 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-18 22:11:04,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2699 states. [2023-12-18 22:11:04,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2699 to 2548. [2023-12-18 22:11:04,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2493 states have (on average 1.829923786602487) internal successors, (4562), 2498 states have internal predecessors, (4562), 39 states have call successors, (39), 13 states have call predecessors, (39), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2023-12-18 22:11:04,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4645 transitions. [2023-12-18 22:11:04,640 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4645 transitions. Word has length 102 [2023-12-18 22:11:04,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:11:04,641 INFO L495 AbstractCegarLoop]: Abstraction has 2548 states and 4645 transitions. [2023-12-18 22:11:04,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-18 22:11:04,642 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4645 transitions. [2023-12-18 22:11:04,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-18 22:11:04,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:11:04,648 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:11:04,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-18 22:11:04,650 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:11:04,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:11:04,653 INFO L85 PathProgramCache]: Analyzing trace with hash 665053397, now seen corresponding path program 1 times [2023-12-18 22:11:04,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:11:04,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90465718] [2023-12-18 22:11:04,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:11:04,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:11:04,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:04,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:11:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:04,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 22:11:04,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:04,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-18 22:11:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:04,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-18 22:11:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:04,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-18 22:11:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:04,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:11:04,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:11:04,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90465718] [2023-12-18 22:11:04,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90465718] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:11:04,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:11:04,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:11:04,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930361903] [2023-12-18 22:11:04,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:11:04,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:11:04,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:11:04,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:11:04,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:11:04,892 INFO L87 Difference]: Start difference. First operand 2548 states and 4645 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-18 22:11:07,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:11:07,082 INFO L93 Difference]: Finished difference Result 3616 states and 6396 transitions. [2023-12-18 22:11:07,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:11:07,083 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2023-12-18 22:11:07,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:11:07,096 INFO L225 Difference]: With dead ends: 3616 [2023-12-18 22:11:07,097 INFO L226 Difference]: Without dead ends: 3203 [2023-12-18 22:11:07,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:11:07,100 INFO L413 NwaCegarLoop]: 4226 mSDtfsCounter, 4782 mSDsluCounter, 16764 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4795 SdHoareTripleChecker+Valid, 20990 SdHoareTripleChecker+Invalid, 2055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-18 22:11:07,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4795 Valid, 20990 Invalid, 2055 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-18 22:11:07,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3203 states. [2023-12-18 22:11:07,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3203 to 2936. [2023-12-18 22:11:07,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2837 states have (on average 1.8022559041240747) internal successors, (5113), 2844 states have internal predecessors, (5113), 69 states have call successors, (69), 25 states have call predecessors, (69), 28 states have return successors, (84), 70 states have call predecessors, (84), 67 states have call successors, (84) [2023-12-18 22:11:07,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5266 transitions. [2023-12-18 22:11:07,190 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5266 transitions. Word has length 102 [2023-12-18 22:11:07,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:11:07,191 INFO L495 AbstractCegarLoop]: Abstraction has 2936 states and 5266 transitions. [2023-12-18 22:11:07,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-18 22:11:07,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5266 transitions. [2023-12-18 22:11:07,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-18 22:11:07,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:11:07,197 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:11:07,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-18 22:11:07,197 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:11:07,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:11:07,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1753431081, now seen corresponding path program 1 times [2023-12-18 22:11:07,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:11:07,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567161846] [2023-12-18 22:11:07,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:11:07,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:11:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:07,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:11:07,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:07,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 22:11:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:07,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-18 22:11:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:07,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-18 22:11:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:07,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-18 22:11:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:07,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:11:07,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:11:07,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567161846] [2023-12-18 22:11:07,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567161846] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:11:07,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:11:07,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:11:07,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605311742] [2023-12-18 22:11:07,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:11:07,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:11:07,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:11:07,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:11:07,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:11:07,404 INFO L87 Difference]: Start difference. First operand 2936 states and 5266 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-18 22:11:08,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:11:08,286 INFO L93 Difference]: Finished difference Result 4009 states and 7040 transitions. [2023-12-18 22:11:08,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 22:11:08,287 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2023-12-18 22:11:08,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:11:08,303 INFO L225 Difference]: With dead ends: 4009 [2023-12-18 22:11:08,303 INFO L226 Difference]: Without dead ends: 3206 [2023-12-18 22:11:08,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:11:08,314 INFO L413 NwaCegarLoop]: 4118 mSDtfsCounter, 4659 mSDsluCounter, 12253 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4673 SdHoareTripleChecker+Valid, 16371 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-18 22:11:08,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4673 Valid, 16371 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-18 22:11:08,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3206 states. [2023-12-18 22:11:08,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3206 to 2936. [2023-12-18 22:11:08,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2837 states have (on average 1.8004934790271414) internal successors, (5108), 2844 states have internal predecessors, (5108), 69 states have call successors, (69), 25 states have call predecessors, (69), 28 states have return successors, (84), 70 states have call predecessors, (84), 67 states have call successors, (84) [2023-12-18 22:11:08,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5261 transitions. [2023-12-18 22:11:08,422 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5261 transitions. Word has length 102 [2023-12-18 22:11:08,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:11:08,422 INFO L495 AbstractCegarLoop]: Abstraction has 2936 states and 5261 transitions. [2023-12-18 22:11:08,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-18 22:11:08,423 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5261 transitions. [2023-12-18 22:11:08,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-18 22:11:08,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:11:08,424 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:11:08,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-18 22:11:08,425 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:11:08,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:11:08,426 INFO L85 PathProgramCache]: Analyzing trace with hash 662405269, now seen corresponding path program 1 times [2023-12-18 22:11:08,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:11:08,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425085777] [2023-12-18 22:11:08,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:11:08,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:11:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:08,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:11:08,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:08,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 22:11:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:08,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-18 22:11:08,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:08,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-18 22:11:08,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:08,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-18 22:11:08,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:08,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:11:08,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:11:08,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425085777] [2023-12-18 22:11:08,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425085777] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:11:08,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:11:08,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:11:08,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927409887] [2023-12-18 22:11:08,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:11:08,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:11:08,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:11:08,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:11:08,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:11:08,610 INFO L87 Difference]: Start difference. First operand 2936 states and 5261 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-18 22:11:09,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:11:09,725 INFO L93 Difference]: Finished difference Result 4005 states and 7019 transitions. [2023-12-18 22:11:09,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 22:11:09,726 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2023-12-18 22:11:09,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:11:09,738 INFO L225 Difference]: With dead ends: 4005 [2023-12-18 22:11:09,738 INFO L226 Difference]: Without dead ends: 3202 [2023-12-18 22:11:09,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:11:09,742 INFO L413 NwaCegarLoop]: 4118 mSDtfsCounter, 4571 mSDsluCounter, 16316 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4585 SdHoareTripleChecker+Valid, 20434 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-18 22:11:09,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4585 Valid, 20434 Invalid, 1117 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [57 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-18 22:11:09,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3202 states. [2023-12-18 22:11:09,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3202 to 2936. [2023-12-18 22:11:09,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2837 states have (on average 1.798731053930208) internal successors, (5103), 2844 states have internal predecessors, (5103), 69 states have call successors, (69), 25 states have call predecessors, (69), 28 states have return successors, (84), 70 states have call predecessors, (84), 67 states have call successors, (84) [2023-12-18 22:11:09,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5256 transitions. [2023-12-18 22:11:09,833 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5256 transitions. Word has length 102 [2023-12-18 22:11:09,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:11:09,833 INFO L495 AbstractCegarLoop]: Abstraction has 2936 states and 5256 transitions. [2023-12-18 22:11:09,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-18 22:11:09,834 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5256 transitions. [2023-12-18 22:11:09,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-18 22:11:09,835 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:11:09,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:11:09,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-18 22:11:09,836 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:11:09,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:11:09,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1987261463, now seen corresponding path program 1 times [2023-12-18 22:11:09,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:11:09,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230634197] [2023-12-18 22:11:09,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:11:09,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:11:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:09,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:11:09,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:09,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 22:11:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:09,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-18 22:11:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:09,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-18 22:11:09,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:09,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-18 22:11:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:10,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:11:10,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:11:10,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230634197] [2023-12-18 22:11:10,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230634197] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:11:10,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:11:10,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:11:10,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9268712] [2023-12-18 22:11:10,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:11:10,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:11:10,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:11:10,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:11:10,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:11:10,002 INFO L87 Difference]: Start difference. First operand 2936 states and 5256 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-18 22:11:10,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:11:10,906 INFO L93 Difference]: Finished difference Result 4000 states and 6996 transitions. [2023-12-18 22:11:10,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 22:11:10,906 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2023-12-18 22:11:10,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:11:10,920 INFO L225 Difference]: With dead ends: 4000 [2023-12-18 22:11:10,921 INFO L226 Difference]: Without dead ends: 3197 [2023-12-18 22:11:10,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:11:10,925 INFO L413 NwaCegarLoop]: 4118 mSDtfsCounter, 4655 mSDsluCounter, 12253 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4669 SdHoareTripleChecker+Valid, 16371 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-18 22:11:10,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4669 Valid, 16371 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-18 22:11:10,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3197 states. [2023-12-18 22:11:11,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3197 to 2936. [2023-12-18 22:11:11,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2837 states have (on average 1.7969686288332747) internal successors, (5098), 2844 states have internal predecessors, (5098), 69 states have call successors, (69), 25 states have call predecessors, (69), 28 states have return successors, (84), 70 states have call predecessors, (84), 67 states have call successors, (84) [2023-12-18 22:11:11,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5251 transitions. [2023-12-18 22:11:11,022 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5251 transitions. Word has length 102 [2023-12-18 22:11:11,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:11:11,022 INFO L495 AbstractCegarLoop]: Abstraction has 2936 states and 5251 transitions. [2023-12-18 22:11:11,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-18 22:11:11,022 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5251 transitions. [2023-12-18 22:11:11,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-18 22:11:11,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:11:11,024 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:11:11,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-18 22:11:11,025 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:11:11,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:11:11,025 INFO L85 PathProgramCache]: Analyzing trace with hash -740947883, now seen corresponding path program 1 times [2023-12-18 22:11:11,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:11:11,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805631972] [2023-12-18 22:11:11,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:11:11,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:11:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:11,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:11:11,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:11,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 22:11:11,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:11,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-18 22:11:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:11,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-18 22:11:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:11,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-18 22:11:11,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:11,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:11:11,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:11:11,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805631972] [2023-12-18 22:11:11,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805631972] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:11:11,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:11:11,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:11:11,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618728615] [2023-12-18 22:11:11,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:11:11,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:11:11,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:11:11,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:11:11,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:11:11,196 INFO L87 Difference]: Start difference. First operand 2936 states and 5251 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-18 22:11:13,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:11:13,214 INFO L93 Difference]: Finished difference Result 4993 states and 8567 transitions. [2023-12-18 22:11:13,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:11:13,215 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2023-12-18 22:11:13,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:11:13,230 INFO L225 Difference]: With dead ends: 4993 [2023-12-18 22:11:13,230 INFO L226 Difference]: Without dead ends: 4192 [2023-12-18 22:11:13,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:11:13,232 INFO L413 NwaCegarLoop]: 4262 mSDtfsCounter, 4748 mSDsluCounter, 16816 mSDsCounter, 0 mSdLazyCounter, 2103 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4761 SdHoareTripleChecker+Valid, 21078 SdHoareTripleChecker+Invalid, 2163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-18 22:11:13,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4761 Valid, 21078 Invalid, 2163 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 2103 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-18 22:11:13,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4192 states. [2023-12-18 22:11:13,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4192 to 3723. [2023-12-18 22:11:13,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3723 states, 3536 states have (on average 1.7531108597285068) internal successors, (6199), 3547 states have internal predecessors, (6199), 129 states have call successors, (129), 49 states have call predecessors, (129), 56 states have return successors, (170), 134 states have call predecessors, (170), 127 states have call successors, (170) [2023-12-18 22:11:13,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3723 states to 3723 states and 6498 transitions. [2023-12-18 22:11:13,330 INFO L78 Accepts]: Start accepts. Automaton has 3723 states and 6498 transitions. Word has length 102 [2023-12-18 22:11:13,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:11:13,330 INFO L495 AbstractCegarLoop]: Abstraction has 3723 states and 6498 transitions. [2023-12-18 22:11:13,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-18 22:11:13,330 INFO L276 IsEmpty]: Start isEmpty. Operand 3723 states and 6498 transitions. [2023-12-18 22:11:13,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-18 22:11:13,332 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:11:13,333 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:11:13,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-18 22:11:13,333 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:11:13,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:11:13,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1798785961, now seen corresponding path program 1 times [2023-12-18 22:11:13,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:11:13,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922509232] [2023-12-18 22:11:13,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:11:13,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:11:13,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:13,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:11:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:13,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 22:11:13,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:13,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-18 22:11:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:13,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-18 22:11:13,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:13,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-18 22:11:13,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:13,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:11:13,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:11:13,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922509232] [2023-12-18 22:11:13,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922509232] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:11:13,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:11:13,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:11:13,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627173838] [2023-12-18 22:11:13,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:11:13,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:11:13,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:11:13,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:11:13,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:11:13,502 INFO L87 Difference]: Start difference. First operand 3723 states and 6498 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-18 22:11:15,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:11:15,486 INFO L93 Difference]: Finished difference Result 8412 states and 14052 transitions. [2023-12-18 22:11:15,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:11:15,487 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2023-12-18 22:11:15,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:11:15,511 INFO L225 Difference]: With dead ends: 8412 [2023-12-18 22:11:15,511 INFO L226 Difference]: Without dead ends: 6824 [2023-12-18 22:11:15,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:11:15,518 INFO L413 NwaCegarLoop]: 4257 mSDtfsCounter, 4978 mSDsluCounter, 16811 mSDsCounter, 0 mSdLazyCounter, 2064 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4998 SdHoareTripleChecker+Valid, 21068 SdHoareTripleChecker+Invalid, 2127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-18 22:11:15,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4998 Valid, 21068 Invalid, 2127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2064 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-18 22:11:15,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6824 states. [2023-12-18 22:11:15,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6824 to 5288. [2023-12-18 22:11:15,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5288 states, 4933 states have (on average 1.7034259071558888) internal successors, (8403), 4952 states have internal predecessors, (8403), 241 states have call successors, (241), 97 states have call predecessors, (241), 112 states have return successors, (352), 254 states have call predecessors, (352), 239 states have call successors, (352) [2023-12-18 22:11:15,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5288 states to 5288 states and 8996 transitions. [2023-12-18 22:11:15,693 INFO L78 Accepts]: Start accepts. Automaton has 5288 states and 8996 transitions. Word has length 102 [2023-12-18 22:11:15,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:11:15,693 INFO L495 AbstractCegarLoop]: Abstraction has 5288 states and 8996 transitions. [2023-12-18 22:11:15,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-18 22:11:15,694 INFO L276 IsEmpty]: Start isEmpty. Operand 5288 states and 8996 transitions. [2023-12-18 22:11:15,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-18 22:11:15,698 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:11:15,698 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:11:15,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-18 22:11:15,698 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:11:15,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:11:15,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1353678869, now seen corresponding path program 1 times [2023-12-18 22:11:15,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:11:15,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052428231] [2023-12-18 22:11:15,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:11:15,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:11:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:15,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:11:15,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:15,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 22:11:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:15,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-18 22:11:15,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:15,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-18 22:11:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:15,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-18 22:11:15,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:15,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:11:15,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:11:15,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052428231] [2023-12-18 22:11:15,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052428231] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:11:15,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:11:15,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:11:15,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977740826] [2023-12-18 22:11:15,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:11:15,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:11:15,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:11:15,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:11:15,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:11:15,956 INFO L87 Difference]: Start difference. First operand 5288 states and 8996 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-18 22:11:17,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:11:17,780 INFO L93 Difference]: Finished difference Result 14195 states and 23402 transitions. [2023-12-18 22:11:17,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:11:17,784 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2023-12-18 22:11:17,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:11:17,819 INFO L225 Difference]: With dead ends: 14195 [2023-12-18 22:11:17,819 INFO L226 Difference]: Without dead ends: 11042 [2023-12-18 22:11:17,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:11:17,833 INFO L413 NwaCegarLoop]: 4257 mSDtfsCounter, 4921 mSDsluCounter, 16811 mSDsCounter, 0 mSdLazyCounter, 2009 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4941 SdHoareTripleChecker+Valid, 21068 SdHoareTripleChecker+Invalid, 2072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-18 22:11:17,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4941 Valid, 21068 Invalid, 2072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2009 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-18 22:11:17,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11042 states. [2023-12-18 22:11:18,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11042 to 8433. [2023-12-18 22:11:18,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8433 states, 7750 states have (on average 1.6589677419354838) internal successors, (12857), 7785 states have internal predecessors, (12857), 457 states have call successors, (457), 193 states have call predecessors, (457), 224 states have return successors, (762), 486 states have call predecessors, (762), 455 states have call successors, (762) [2023-12-18 22:11:18,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8433 states to 8433 states and 14076 transitions. [2023-12-18 22:11:18,144 INFO L78 Accepts]: Start accepts. Automaton has 8433 states and 14076 transitions. Word has length 102 [2023-12-18 22:11:18,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:11:18,146 INFO L495 AbstractCegarLoop]: Abstraction has 8433 states and 14076 transitions. [2023-12-18 22:11:18,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-18 22:11:18,146 INFO L276 IsEmpty]: Start isEmpty. Operand 8433 states and 14076 transitions. [2023-12-18 22:11:18,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-18 22:11:18,152 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:11:18,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:11:18,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-18 22:11:18,153 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:11:18,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:11:18,153 INFO L85 PathProgramCache]: Analyzing trace with hash -2102254765, now seen corresponding path program 1 times [2023-12-18 22:11:18,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:11:18,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634224593] [2023-12-18 22:11:18,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:11:18,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:11:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:18,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:11:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:18,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 22:11:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:18,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-18 22:11:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:18,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-18 22:11:18,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:18,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-18 22:11:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:18,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:11:18,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:11:18,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634224593] [2023-12-18 22:11:18,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634224593] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:11:18,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:11:18,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:11:18,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968671459] [2023-12-18 22:11:18,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:11:18,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:11:18,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:11:18,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:11:18,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:11:18,300 INFO L87 Difference]: Start difference. First operand 8433 states and 14076 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-18 22:11:20,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:11:20,376 INFO L93 Difference]: Finished difference Result 25710 states and 42196 transitions. [2023-12-18 22:11:20,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:11:20,377 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2023-12-18 22:11:20,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:11:20,443 INFO L225 Difference]: With dead ends: 25710 [2023-12-18 22:11:20,444 INFO L226 Difference]: Without dead ends: 19412 [2023-12-18 22:11:20,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:11:20,474 INFO L413 NwaCegarLoop]: 4227 mSDtfsCounter, 4898 mSDsluCounter, 16762 mSDsCounter, 0 mSdLazyCounter, 1877 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4918 SdHoareTripleChecker+Valid, 20989 SdHoareTripleChecker+Invalid, 1948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-18 22:11:20,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4918 Valid, 20989 Invalid, 1948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1877 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-18 22:11:20,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19412 states. [2023-12-18 22:11:20,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19412 to 14723. [2023-12-18 22:11:21,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14723 states, 13400 states have (on average 1.6266417910447761) internal successors, (21797), 13467 states have internal predecessors, (21797), 873 states have call successors, (873), 385 states have call predecessors, (873), 448 states have return successors, (1728), 934 states have call predecessors, (1728), 871 states have call successors, (1728) [2023-12-18 22:11:21,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14723 states to 14723 states and 24398 transitions. [2023-12-18 22:11:21,061 INFO L78 Accepts]: Start accepts. Automaton has 14723 states and 24398 transitions. Word has length 102 [2023-12-18 22:11:21,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:11:21,062 INFO L495 AbstractCegarLoop]: Abstraction has 14723 states and 24398 transitions. [2023-12-18 22:11:21,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-18 22:11:21,062 INFO L276 IsEmpty]: Start isEmpty. Operand 14723 states and 24398 transitions. [2023-12-18 22:11:21,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-18 22:11:21,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:11:21,072 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:11:21,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-18 22:11:21,073 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:11:21,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:11:21,073 INFO L85 PathProgramCache]: Analyzing trace with hash -2075189163, now seen corresponding path program 1 times [2023-12-18 22:11:21,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:11:21,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134655366] [2023-12-18 22:11:21,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:11:21,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:11:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:21,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:11:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:21,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 22:11:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:21,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-18 22:11:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:21,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-18 22:11:21,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:21,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-18 22:11:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:21,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:11:21,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:11:21,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134655366] [2023-12-18 22:11:21,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134655366] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:11:21,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:11:21,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:11:21,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591700820] [2023-12-18 22:11:21,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:11:21,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:11:21,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:11:21,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:11:21,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:11:21,218 INFO L87 Difference]: Start difference. First operand 14723 states and 24398 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-18 22:11:23,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:11:23,649 INFO L93 Difference]: Finished difference Result 48260 states and 79600 transitions. [2023-12-18 22:11:23,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:11:23,650 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2023-12-18 22:11:23,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:11:23,797 INFO L225 Difference]: With dead ends: 48260 [2023-12-18 22:11:23,797 INFO L226 Difference]: Without dead ends: 35672 [2023-12-18 22:11:23,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:11:23,854 INFO L413 NwaCegarLoop]: 4257 mSDtfsCounter, 4789 mSDsluCounter, 16811 mSDsCounter, 0 mSdLazyCounter, 2186 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4801 SdHoareTripleChecker+Valid, 21068 SdHoareTripleChecker+Invalid, 2248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-18 22:11:23,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4801 Valid, 21068 Invalid, 2248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2186 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-18 22:11:23,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35672 states. [2023-12-18 22:11:24,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35672 to 27303. [2023-12-18 22:11:24,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27303 states, 24732 states have (on average 1.6068655992236778) internal successors, (39741), 24863 states have internal predecessors, (39741), 1673 states have call successors, (1673), 769 states have call predecessors, (1673), 896 states have return successors, (4114), 1798 states have call predecessors, (4114), 1671 states have call successors, (4114) [2023-12-18 22:11:25,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27303 states to 27303 states and 45528 transitions. [2023-12-18 22:11:25,028 INFO L78 Accepts]: Start accepts. Automaton has 27303 states and 45528 transitions. Word has length 102 [2023-12-18 22:11:25,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:11:25,028 INFO L495 AbstractCegarLoop]: Abstraction has 27303 states and 45528 transitions. [2023-12-18 22:11:25,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-18 22:11:25,030 INFO L276 IsEmpty]: Start isEmpty. Operand 27303 states and 45528 transitions. [2023-12-18 22:11:25,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-18 22:11:25,048 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:11:25,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:11:25,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-18 22:11:25,049 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:11:25,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:11:25,049 INFO L85 PathProgramCache]: Analyzing trace with hash 142441235, now seen corresponding path program 1 times [2023-12-18 22:11:25,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:11:25,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835000426] [2023-12-18 22:11:25,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:11:25,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:11:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:25,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:11:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:25,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 22:11:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:25,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-18 22:11:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:25,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-18 22:11:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:25,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-18 22:11:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:25,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:11:25,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:11:25,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835000426] [2023-12-18 22:11:25,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835000426] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:11:25,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:11:25,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:11:25,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99163147] [2023-12-18 22:11:25,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:11:25,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:11:25,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:11:25,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:11:25,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:11:25,185 INFO L87 Difference]: Start difference. First operand 27303 states and 45528 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-18 22:11:28,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:11:28,365 INFO L93 Difference]: Finished difference Result 92400 states and 154688 transitions. [2023-12-18 22:11:28,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:11:28,368 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2023-12-18 22:11:28,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:11:28,691 INFO L225 Difference]: With dead ends: 92400 [2023-12-18 22:11:28,691 INFO L226 Difference]: Without dead ends: 67232 [2023-12-18 22:11:28,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:11:28,775 INFO L413 NwaCegarLoop]: 4259 mSDtfsCounter, 4819 mSDsluCounter, 16811 mSDsCounter, 0 mSdLazyCounter, 1980 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4839 SdHoareTripleChecker+Valid, 21070 SdHoareTripleChecker+Invalid, 2043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-18 22:11:28,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4839 Valid, 21070 Invalid, 2043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1980 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-18 22:11:28,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67232 states. [2023-12-18 22:11:31,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67232 to 52463. [2023-12-18 22:11:31,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52463 states, 47460 states have (on average 1.596228402865571) internal successors, (75757), 47719 states have internal predecessors, (75757), 3209 states have call successors, (3209), 1537 states have call predecessors, (3209), 1792 states have return successors, (10280), 3462 states have call predecessors, (10280), 3207 states have call successors, (10280) [2023-12-18 22:11:31,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52463 states to 52463 states and 89246 transitions. [2023-12-18 22:11:31,292 INFO L78 Accepts]: Start accepts. Automaton has 52463 states and 89246 transitions. Word has length 102 [2023-12-18 22:11:31,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:11:31,293 INFO L495 AbstractCegarLoop]: Abstraction has 52463 states and 89246 transitions. [2023-12-18 22:11:31,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-18 22:11:31,293 INFO L276 IsEmpty]: Start isEmpty. Operand 52463 states and 89246 transitions. [2023-12-18 22:11:31,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-18 22:11:31,327 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:11:31,328 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:11:31,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-18 22:11:31,328 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:11:31,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:11:31,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1876545685, now seen corresponding path program 1 times [2023-12-18 22:11:31,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:11:31,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374185691] [2023-12-18 22:11:31,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:11:31,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:11:31,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:31,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:11:31,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:31,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 22:11:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:31,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-18 22:11:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:31,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-18 22:11:31,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:31,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-18 22:11:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:31,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:11:31,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:11:31,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374185691] [2023-12-18 22:11:31,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374185691] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:11:31,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:11:31,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:11:31,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097856766] [2023-12-18 22:11:31,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:11:31,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:11:31,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:11:31,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:11:31,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:11:31,466 INFO L87 Difference]: Start difference. First operand 52463 states and 89246 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-18 22:11:35,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:11:35,957 INFO L93 Difference]: Finished difference Result 178760 states and 307368 transitions. [2023-12-18 22:11:35,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:11:35,958 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2023-12-18 22:11:35,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:11:36,555 INFO L225 Difference]: With dead ends: 178760 [2023-12-18 22:11:36,555 INFO L226 Difference]: Without dead ends: 128432 [2023-12-18 22:11:36,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:11:36,684 INFO L413 NwaCegarLoop]: 4258 mSDtfsCounter, 4770 mSDsluCounter, 16811 mSDsCounter, 0 mSdLazyCounter, 2071 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4782 SdHoareTripleChecker+Valid, 21069 SdHoareTripleChecker+Invalid, 2134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-18 22:11:36,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4782 Valid, 21069 Invalid, 2134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2071 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-18 22:11:36,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128432 states. [2023-12-18 22:11:41,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128432 to 102783. [2023-12-18 22:11:41,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102783 states, 93044 states have (on average 1.5911289282490004) internal successors, (148045), 93559 states have internal predecessors, (148045), 6153 states have call successors, (6153), 3073 states have call predecessors, (6153), 3584 states have return successors, (26858), 6662 states have call predecessors, (26858), 6151 states have call successors, (26858) [2023-12-18 22:11:41,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102783 states to 102783 states and 181056 transitions. [2023-12-18 22:11:41,969 INFO L78 Accepts]: Start accepts. Automaton has 102783 states and 181056 transitions. Word has length 102 [2023-12-18 22:11:41,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:11:41,969 INFO L495 AbstractCegarLoop]: Abstraction has 102783 states and 181056 transitions. [2023-12-18 22:11:41,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-18 22:11:41,970 INFO L276 IsEmpty]: Start isEmpty. Operand 102783 states and 181056 transitions. [2023-12-18 22:11:42,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-18 22:11:42,051 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:11:42,051 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:11:42,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-18 22:11:42,052 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:11:42,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:11:42,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1531198765, now seen corresponding path program 1 times [2023-12-18 22:11:42,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:11:42,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321867623] [2023-12-18 22:11:42,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:11:42,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:11:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:42,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:11:42,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:42,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 22:11:42,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:42,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-18 22:11:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:42,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-18 22:11:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:42,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-18 22:11:42,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:42,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:11:42,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:11:42,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321867623] [2023-12-18 22:11:42,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321867623] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:11:42,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:11:42,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:11:42,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114237622] [2023-12-18 22:11:42,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:11:42,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:11:42,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:11:42,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:11:42,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:11:42,353 INFO L87 Difference]: Start difference. First operand 102783 states and 181056 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-18 22:11:50,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:11:50,523 INFO L93 Difference]: Finished difference Result 349703 states and 609039 transitions. [2023-12-18 22:11:50,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-18 22:11:50,524 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2023-12-18 22:11:50,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:11:51,684 INFO L225 Difference]: With dead ends: 349703 [2023-12-18 22:11:51,685 INFO L226 Difference]: Without dead ends: 249055 [2023-12-18 22:11:52,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2023-12-18 22:11:52,010 INFO L413 NwaCegarLoop]: 4149 mSDtfsCounter, 4770 mSDsluCounter, 16498 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4791 SdHoareTripleChecker+Valid, 20647 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-18 22:11:52,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4791 Valid, 20647 Invalid, 1502 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-18 22:11:52,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249055 states. [2023-12-18 22:11:59,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249055 to 200353. [2023-12-18 22:11:59,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200353 states, 180885 states have (on average 1.5696326395223485) internal successors, (283923), 182424 states have internal predecessors, (283923), 12298 states have call successors, (12298), 6145 states have call predecessors, (12298), 7168 states have return successors, (53197), 12295 states have call predecessors, (53197), 12296 states have call successors, (53197) [2023-12-18 22:12:00,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200353 states to 200353 states and 349418 transitions. [2023-12-18 22:12:00,759 INFO L78 Accepts]: Start accepts. Automaton has 200353 states and 349418 transitions. Word has length 102 [2023-12-18 22:12:00,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:12:00,760 INFO L495 AbstractCegarLoop]: Abstraction has 200353 states and 349418 transitions. [2023-12-18 22:12:00,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-18 22:12:00,760 INFO L276 IsEmpty]: Start isEmpty. Operand 200353 states and 349418 transitions. [2023-12-18 22:12:01,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-18 22:12:01,094 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:12:01,095 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:12:01,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-18 22:12:01,095 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:12:01,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:12:01,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1302369273, now seen corresponding path program 1 times [2023-12-18 22:12:01,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:12:01,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293853564] [2023-12-18 22:12:01,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:12:01,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:12:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:01,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:12:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:01,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 22:12:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:01,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-18 22:12:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:01,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-18 22:12:01,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:01,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-18 22:12:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:01,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-18 22:12:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:01,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:12:01,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:01,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-12-18 22:12:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:01,285 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-18 22:12:01,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:12:01,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293853564] [2023-12-18 22:12:01,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293853564] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:12:01,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124293334] [2023-12-18 22:12:01,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:12:01,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:12:01,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:12:01,289 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) [2023-12-18 22:12:01,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-18 22:12:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:01,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 735 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-18 22:12:01,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:12:01,536 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-18 22:12:01,536 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:12:01,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124293334] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:12:01,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:12:01,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-18 22:12:01,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262107629] [2023-12-18 22:12:01,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:12:01,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:12:01,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:12:01,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:12:01,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:12:01,538 INFO L87 Difference]: Start difference. First operand 200353 states and 349418 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 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) [2023-12-18 22:12:13,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:12:13,778 INFO L93 Difference]: Finished difference Result 593715 states and 1040800 transitions. [2023-12-18 22:12:13,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:12:13,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 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 164 [2023-12-18 22:12:13,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:12:15,599 INFO L225 Difference]: With dead ends: 593715 [2023-12-18 22:12:15,599 INFO L226 Difference]: Without dead ends: 395497 [2023-12-18 22:12:16,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:12:16,114 INFO L413 NwaCegarLoop]: 4266 mSDtfsCounter, 4239 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4239 SdHoareTripleChecker+Valid, 4551 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 22:12:16,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4239 Valid, 4551 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 22:12:16,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395497 states. [2023-12-18 22:12:29,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395497 to 394469. [2023-12-18 22:12:30,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394469 states, 356055 states have (on average 1.5649688952549465) internal successors, (557215), 359130 states have internal predecessors, (557215), 24076 states have call successors, (24076), 12289 states have call predecessors, (24076), 14336 states have return successors, (105363), 23561 states have call predecessors, (105363), 24074 states have call successors, (105363) [2023-12-18 22:12:33,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394469 states to 394469 states and 686654 transitions. [2023-12-18 22:12:33,022 INFO L78 Accepts]: Start accepts. Automaton has 394469 states and 686654 transitions. Word has length 164 [2023-12-18 22:12:33,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:12:33,022 INFO L495 AbstractCegarLoop]: Abstraction has 394469 states and 686654 transitions. [2023-12-18 22:12:33,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 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) [2023-12-18 22:12:33,023 INFO L276 IsEmpty]: Start isEmpty. Operand 394469 states and 686654 transitions. [2023-12-18 22:12:33,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-18 22:12:33,797 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:12:33,798 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:12:33,805 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-18 22:12:34,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-18 22:12:34,004 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:12:34,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:12:34,005 INFO L85 PathProgramCache]: Analyzing trace with hash -720749401, now seen corresponding path program 1 times [2023-12-18 22:12:34,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:12:34,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657984635] [2023-12-18 22:12:34,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:12:34,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:12:34,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:34,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:12:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:34,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 22:12:34,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:34,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-18 22:12:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:34,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-18 22:12:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:34,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-18 22:12:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:34,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-18 22:12:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:34,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:12:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:34,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-12-18 22:12:34,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:34,728 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-18 22:12:34,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:12:34,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657984635] [2023-12-18 22:12:34,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657984635] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:12:34,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687216922] [2023-12-18 22:12:34,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:12:34,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:12:34,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:12:34,741 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) [2023-12-18 22:12:34,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process