/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/systemc/token_ring.11.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 00:44:42,294 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 00:44:42,360 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 00:44:42,368 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 00:44:42,369 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 00:44:42,401 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 00:44:42,402 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 00:44:42,402 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 00:44:42,403 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 00:44:42,406 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 00:44:42,407 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 00:44:42,407 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 00:44:42,408 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 00:44:42,409 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 00:44:42,409 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 00:44:42,409 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 00:44:42,410 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 00:44:42,410 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 00:44:42,410 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 00:44:42,410 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 00:44:42,410 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 00:44:42,411 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 00:44:42,411 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 00:44:42,411 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 00:44:42,411 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 00:44:42,412 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 00:44:42,412 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 00:44:42,412 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 00:44:42,412 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 00:44:42,413 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 00:44:42,414 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 00:44:42,414 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 00:44:42,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 00:44:42,414 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 00:44:42,414 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 00:44:42,414 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 00:44:42,414 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 00:44:42,415 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 00:44:42,415 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 00:44:42,415 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 00:44:42,415 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 00:44:42,415 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 00:44:42,415 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 00:44:42,416 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 00:44:42,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 00:44:42,635 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 00:44:42,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 00:44:42,638 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 00:44:42,639 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 00:44:42,640 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.11.cil-1.c [2023-12-20 00:44:43,833 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 00:44:44,026 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 00:44:44,027 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.11.cil-1.c [2023-12-20 00:44:44,043 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08f433bac/9044d0aaf9ba4007b7cb1b4570bdc6b3/FLAG5789308f6 [2023-12-20 00:44:44,054 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08f433bac/9044d0aaf9ba4007b7cb1b4570bdc6b3 [2023-12-20 00:44:44,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 00:44:44,057 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 00:44:44,058 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 00:44:44,058 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 00:44:44,062 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 00:44:44,062 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:44:44" (1/1) ... [2023-12-20 00:44:44,063 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2870f109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:44:44, skipping insertion in model container [2023-12-20 00:44:44,063 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:44:44" (1/1) ... [2023-12-20 00:44:44,124 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 00:44:44,250 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.11.cil-1.c[671,684] [2023-12-20 00:44:44,355 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 00:44:44,369 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 00:44:44,377 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.11.cil-1.c[671,684] [2023-12-20 00:44:44,438 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 00:44:44,475 INFO L206 MainTranslator]: Completed translation [2023-12-20 00:44:44,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:44:44 WrapperNode [2023-12-20 00:44:44,475 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 00:44:44,476 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 00:44:44,477 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 00:44:44,477 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 00:44:44,482 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:44:44" (1/1) ... [2023-12-20 00:44:44,495 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:44:44" (1/1) ... [2023-12-20 00:44:44,535 INFO L138 Inliner]: procedures = 50, calls = 65, calls flagged for inlining = 33, calls inlined = 33, statements flattened = 825 [2023-12-20 00:44:44,535 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 00:44:44,536 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 00:44:44,536 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 00:44:44,536 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 00:44:44,554 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:44:44" (1/1) ... [2023-12-20 00:44:44,554 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:44:44" (1/1) ... [2023-12-20 00:44:44,558 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:44:44" (1/1) ... [2023-12-20 00:44:44,573 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 00:44:44,573 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:44:44" (1/1) ... [2023-12-20 00:44:44,573 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:44:44" (1/1) ... [2023-12-20 00:44:44,596 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:44:44" (1/1) ... [2023-12-20 00:44:44,608 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:44:44" (1/1) ... [2023-12-20 00:44:44,611 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:44:44" (1/1) ... [2023-12-20 00:44:44,629 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:44:44" (1/1) ... [2023-12-20 00:44:44,634 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 00:44:44,635 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 00:44:44,635 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 00:44:44,635 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 00:44:44,636 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:44:44" (1/1) ... [2023-12-20 00:44:44,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 00:44:44,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:44:44,673 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 00:44:44,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 00:44:44,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 00:44:44,704 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-20 00:44:44,704 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-20 00:44:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-20 00:44:44,705 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-20 00:44:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-20 00:44:44,706 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-20 00:44:44,706 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-20 00:44:44,707 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-20 00:44:44,707 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-20 00:44:44,707 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-20 00:44:44,707 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-20 00:44:44,707 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-20 00:44:44,707 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-20 00:44:44,707 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-20 00:44:44,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 00:44:44,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 00:44:44,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 00:44:44,828 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 00:44:44,830 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 00:44:45,540 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 00:44:45,591 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 00:44:45,591 INFO L309 CfgBuilder]: Removed 14 assume(true) statements. [2023-12-20 00:44:45,592 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:44:45 BoogieIcfgContainer [2023-12-20 00:44:45,592 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 00:44:45,594 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 00:44:45,594 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 00:44:45,597 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 00:44:45,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 12:44:44" (1/3) ... [2023-12-20 00:44:45,598 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f06b499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:44:45, skipping insertion in model container [2023-12-20 00:44:45,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:44:44" (2/3) ... [2023-12-20 00:44:45,598 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f06b499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:44:45, skipping insertion in model container [2023-12-20 00:44:45,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:44:45" (3/3) ... [2023-12-20 00:44:45,599 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.11.cil-1.c [2023-12-20 00:44:45,613 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 00:44:45,613 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 00:44:45,656 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 00:44:45,662 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;@3c107094, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 00:44:45,662 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 00:44:45,667 INFO L276 IsEmpty]: Start isEmpty. Operand has 333 states, 297 states have (on average 1.7373737373737375) internal successors, (516), 301 states have internal predecessors, (516), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-20 00:44:45,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-20 00:44:45,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:44:45,681 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:44:45,681 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:44:45,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:44:45,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1682378618, now seen corresponding path program 1 times [2023-12-20 00:44:45,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:44:45,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657440849] [2023-12-20 00:44:45,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:44:45,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:44:45,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:46,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:44:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:46,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 00:44:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:46,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 00:44:46,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:46,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 00:44:46,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:46,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-20 00:44:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:46,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:44:46,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:44:46,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657440849] [2023-12-20 00:44:46,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657440849] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:44:46,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:44:46,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 00:44:46,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285866852] [2023-12-20 00:44:46,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:44:46,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 00:44:46,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:44:46,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 00:44:46,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:44:46,359 INFO L87 Difference]: Start difference. First operand has 333 states, 297 states have (on average 1.7373737373737375) internal successors, (516), 301 states have internal predecessors, (516), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:44:48,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:44:48,149 INFO L93 Difference]: Finished difference Result 779 states and 1345 transitions. [2023-12-20 00:44:48,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 00:44:48,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 3 states have internal predecessors, (140), 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 151 [2023-12-20 00:44:48,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:44:48,164 INFO L225 Difference]: With dead ends: 779 [2023-12-20 00:44:48,164 INFO L226 Difference]: Without dead ends: 450 [2023-12-20 00:44:48,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 00:44:48,171 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 920 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 00:44:48,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [943 Valid, 613 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 00:44:48,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2023-12-20 00:44:48,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 330. [2023-12-20 00:44:48,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 296 states have (on average 1.635135135135135) internal successors, (484), 298 states have internal predecessors, (484), 27 states have call successors, (27), 7 states have call predecessors, (27), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-20 00:44:48,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 536 transitions. [2023-12-20 00:44:48,231 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 536 transitions. Word has length 151 [2023-12-20 00:44:48,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:44:48,232 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 536 transitions. [2023-12-20 00:44:48,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:44:48,232 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 536 transitions. [2023-12-20 00:44:48,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-20 00:44:48,235 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:44:48,235 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:44:48,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 00:44:48,236 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:44:48,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:44:48,236 INFO L85 PathProgramCache]: Analyzing trace with hash -2020666168, now seen corresponding path program 1 times [2023-12-20 00:44:48,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:44:48,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453351417] [2023-12-20 00:44:48,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:44:48,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:44:48,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:48,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:44:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:48,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 00:44:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:48,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 00:44:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:48,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 00:44:48,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:48,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-20 00:44:48,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:48,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:44:48,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:44:48,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453351417] [2023-12-20 00:44:48,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453351417] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:44:48,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:44:48,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:44:48,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124084989] [2023-12-20 00:44:48,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:44:48,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:44:48,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:44:48,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:44:48,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:44:48,511 INFO L87 Difference]: Start difference. First operand 330 states and 536 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:44:50,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:44:50,864 INFO L93 Difference]: Finished difference Result 802 states and 1334 transitions. [2023-12-20 00:44:50,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 00:44:50,865 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 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 151 [2023-12-20 00:44:50,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:44:50,872 INFO L225 Difference]: With dead ends: 802 [2023-12-20 00:44:50,872 INFO L226 Difference]: Without dead ends: 486 [2023-12-20 00:44:50,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-12-20 00:44:50,876 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 1054 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 1938 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 1999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 00:44:50,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 1098 Invalid, 1999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1938 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 00:44:50,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2023-12-20 00:44:50,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 332. [2023-12-20 00:44:50,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 298 states have (on average 1.6275167785234899) internal successors, (485), 300 states have internal predecessors, (485), 27 states have call successors, (27), 7 states have call predecessors, (27), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-20 00:44:50,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 537 transitions. [2023-12-20 00:44:50,919 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 537 transitions. Word has length 151 [2023-12-20 00:44:50,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:44:50,921 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 537 transitions. [2023-12-20 00:44:50,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:44:50,921 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 537 transitions. [2023-12-20 00:44:50,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-20 00:44:50,927 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:44:50,927 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:44:50,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 00:44:50,928 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:44:50,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:44:50,930 INFO L85 PathProgramCache]: Analyzing trace with hash 889061772, now seen corresponding path program 1 times [2023-12-20 00:44:50,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:44:50,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324077521] [2023-12-20 00:44:50,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:44:50,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:44:50,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:51,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:44:51,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:51,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 00:44:51,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:51,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 00:44:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:51,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 00:44:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:51,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-20 00:44:51,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:51,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:44:51,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:44:51,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324077521] [2023-12-20 00:44:51,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324077521] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:44:51,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:44:51,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 00:44:51,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638611503] [2023-12-20 00:44:51,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:44:51,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 00:44:51,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:44:51,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 00:44:51,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-20 00:44:51,251 INFO L87 Difference]: Start difference. First operand 332 states and 537 transitions. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 6 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:44:54,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:44:54,991 INFO L93 Difference]: Finished difference Result 1247 states and 2089 transitions. [2023-12-20 00:44:54,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-20 00:44:54,992 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 6 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-20 00:44:54,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:44:54,996 INFO L225 Difference]: With dead ends: 1247 [2023-12-20 00:44:54,997 INFO L226 Difference]: Without dead ends: 932 [2023-12-20 00:44:54,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2023-12-20 00:44:54,999 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 1445 mSDsluCounter, 1269 mSDsCounter, 0 mSdLazyCounter, 3215 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1465 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 3332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 3215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 00:44:54,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1465 Valid, 1527 Invalid, 3332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 3215 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 00:44:55,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2023-12-20 00:44:55,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 667. [2023-12-20 00:44:55,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 606 states have (on average 1.6336633663366336) internal successors, (990), 609 states have internal predecessors, (990), 47 states have call successors, (47), 13 states have call predecessors, (47), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2023-12-20 00:44:55,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 1085 transitions. [2023-12-20 00:44:55,051 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 1085 transitions. Word has length 151 [2023-12-20 00:44:55,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:44:55,051 INFO L495 AbstractCegarLoop]: Abstraction has 667 states and 1085 transitions. [2023-12-20 00:44:55,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 6 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:44:55,052 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 1085 transitions. [2023-12-20 00:44:55,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-20 00:44:55,053 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:44:55,053 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:44:55,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 00:44:55,054 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:44:55,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:44:55,054 INFO L85 PathProgramCache]: Analyzing trace with hash -602558454, now seen corresponding path program 1 times [2023-12-20 00:44:55,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:44:55,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418400600] [2023-12-20 00:44:55,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:44:55,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:44:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:55,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:44:55,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:55,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 00:44:55,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:55,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 00:44:55,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:55,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 00:44:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:55,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-20 00:44:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:55,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:44:55,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:44:55,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418400600] [2023-12-20 00:44:55,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418400600] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:44:55,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:44:55,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:44:55,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268749880] [2023-12-20 00:44:55,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:44:55,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:44:55,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:44:55,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:44:55,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:44:55,340 INFO L87 Difference]: Start difference. First operand 667 states and 1085 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:44:58,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:44:58,815 INFO L93 Difference]: Finished difference Result 2040 states and 3365 transitions. [2023-12-20 00:44:58,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 00:44:58,816 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 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 151 [2023-12-20 00:44:58,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:44:58,822 INFO L225 Difference]: With dead ends: 2040 [2023-12-20 00:44:58,823 INFO L226 Difference]: Without dead ends: 1390 [2023-12-20 00:44:58,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 00:44:58,825 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 1412 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 3470 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1430 SdHoareTripleChecker+Valid, 1962 SdHoareTripleChecker+Invalid, 3533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 00:44:58,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1430 Valid, 1962 Invalid, 3533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3470 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 00:44:58,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2023-12-20 00:44:58,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 975. [2023-12-20 00:44:58,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 887 states have (on average 1.6268320180383316) internal successors, (1443), 891 states have internal predecessors, (1443), 67 states have call successors, (67), 19 states have call predecessors, (67), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2023-12-20 00:44:58,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1580 transitions. [2023-12-20 00:44:58,873 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1580 transitions. Word has length 151 [2023-12-20 00:44:58,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:44:58,874 INFO L495 AbstractCegarLoop]: Abstraction has 975 states and 1580 transitions. [2023-12-20 00:44:58,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:44:58,874 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1580 transitions. [2023-12-20 00:44:58,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-20 00:44:58,876 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:44:58,876 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:44:58,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 00:44:58,876 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:44:58,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:44:58,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1147431028, now seen corresponding path program 1 times [2023-12-20 00:44:58,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:44:58,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649764421] [2023-12-20 00:44:58,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:44:58,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:44:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:58,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:44:58,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:59,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 00:44:59,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:59,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 00:44:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:59,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 00:44:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:59,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-20 00:44:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:59,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:44:59,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:44:59,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649764421] [2023-12-20 00:44:59,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649764421] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:44:59,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:44:59,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:44:59,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844307648] [2023-12-20 00:44:59,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:44:59,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:44:59,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:44:59,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:44:59,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:44:59,111 INFO L87 Difference]: Start difference. First operand 975 states and 1580 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:45:02,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:45:02,460 INFO L93 Difference]: Finished difference Result 3225 states and 5310 transitions. [2023-12-20 00:45:02,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 00:45:02,460 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 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 151 [2023-12-20 00:45:02,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:45:02,471 INFO L225 Difference]: With dead ends: 3225 [2023-12-20 00:45:02,471 INFO L226 Difference]: Without dead ends: 2267 [2023-12-20 00:45:02,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 00:45:02,474 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 1410 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 3466 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 1960 SdHoareTripleChecker+Invalid, 3531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 00:45:02,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1428 Valid, 1960 Invalid, 3531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3466 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 00:45:02,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2267 states. [2023-12-20 00:45:02,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2267 to 1592. [2023-12-20 00:45:02,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 1450 states have (on average 1.6206896551724137) internal successors, (2350), 1456 states have internal predecessors, (2350), 107 states have call successors, (107), 31 states have call predecessors, (107), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-12-20 00:45:02,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 2575 transitions. [2023-12-20 00:45:02,550 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 2575 transitions. Word has length 151 [2023-12-20 00:45:02,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:45:02,551 INFO L495 AbstractCegarLoop]: Abstraction has 1592 states and 2575 transitions. [2023-12-20 00:45:02,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:45:02,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 2575 transitions. [2023-12-20 00:45:02,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-20 00:45:02,553 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:45:02,553 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:45:02,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 00:45:02,553 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:45:02,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:45:02,553 INFO L85 PathProgramCache]: Analyzing trace with hash -472270902, now seen corresponding path program 1 times [2023-12-20 00:45:02,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:45:02,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409603957] [2023-12-20 00:45:02,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:45:02,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:45:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:02,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:45:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:02,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 00:45:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:02,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 00:45:02,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:02,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 00:45:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:02,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-20 00:45:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:02,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:45:02,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:45:02,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409603957] [2023-12-20 00:45:02,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409603957] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:45:02,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:45:02,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:45:02,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508698454] [2023-12-20 00:45:02,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:45:02,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:45:02,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:45:02,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:45:02,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:45:02,810 INFO L87 Difference]: Start difference. First operand 1592 states and 2575 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:45:04,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:45:04,282 INFO L93 Difference]: Finished difference Result 3830 states and 6296 transitions. [2023-12-20 00:45:04,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:45:04,282 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 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 151 [2023-12-20 00:45:04,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:45:04,293 INFO L225 Difference]: With dead ends: 3830 [2023-12-20 00:45:04,293 INFO L226 Difference]: Without dead ends: 2255 [2023-12-20 00:45:04,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:45:04,300 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 1155 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 1594 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 1688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 00:45:04,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1174 Valid, 840 Invalid, 1688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1594 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 00:45:04,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2255 states. [2023-12-20 00:45:04,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2255 to 1592. [2023-12-20 00:45:04,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 1450 states have (on average 1.6172413793103448) internal successors, (2345), 1456 states have internal predecessors, (2345), 107 states have call successors, (107), 31 states have call predecessors, (107), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-12-20 00:45:04,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 2570 transitions. [2023-12-20 00:45:04,381 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 2570 transitions. Word has length 151 [2023-12-20 00:45:04,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:45:04,381 INFO L495 AbstractCegarLoop]: Abstraction has 1592 states and 2570 transitions. [2023-12-20 00:45:04,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:45:04,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 2570 transitions. [2023-12-20 00:45:04,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-20 00:45:04,383 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:45:04,383 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:45:04,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 00:45:04,384 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:45:04,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:45:04,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1420322868, now seen corresponding path program 1 times [2023-12-20 00:45:04,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:45:04,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773319461] [2023-12-20 00:45:04,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:45:04,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:45:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:04,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:45:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:04,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 00:45:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:04,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 00:45:04,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:04,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 00:45:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:04,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-20 00:45:04,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:04,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:45:04,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:45:04,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773319461] [2023-12-20 00:45:04,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773319461] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:45:04,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:45:04,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:45:04,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512741029] [2023-12-20 00:45:04,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:45:04,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:45:04,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:45:04,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:45:04,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:45:04,623 INFO L87 Difference]: Start difference. First operand 1592 states and 2570 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:45:06,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:45:06,040 INFO L93 Difference]: Finished difference Result 3824 states and 6270 transitions. [2023-12-20 00:45:06,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:45:06,040 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 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 151 [2023-12-20 00:45:06,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:45:06,050 INFO L225 Difference]: With dead ends: 3824 [2023-12-20 00:45:06,050 INFO L226 Difference]: Without dead ends: 2249 [2023-12-20 00:45:06,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:45:06,055 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 1153 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 1580 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 1674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:45:06,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1172 Valid, 840 Invalid, 1674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1580 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 00:45:06,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2249 states. [2023-12-20 00:45:06,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2249 to 1592. [2023-12-20 00:45:06,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 1450 states have (on average 1.6137931034482758) internal successors, (2340), 1456 states have internal predecessors, (2340), 107 states have call successors, (107), 31 states have call predecessors, (107), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-12-20 00:45:06,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 2565 transitions. [2023-12-20 00:45:06,152 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 2565 transitions. Word has length 151 [2023-12-20 00:45:06,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:45:06,153 INFO L495 AbstractCegarLoop]: Abstraction has 1592 states and 2565 transitions. [2023-12-20 00:45:06,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:45:06,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 2565 transitions. [2023-12-20 00:45:06,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-20 00:45:06,155 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:45:06,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:45:06,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 00:45:06,155 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:45:06,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:45:06,156 INFO L85 PathProgramCache]: Analyzing trace with hash -2005094518, now seen corresponding path program 1 times [2023-12-20 00:45:06,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:45:06,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610605962] [2023-12-20 00:45:06,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:45:06,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:45:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:06,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:45:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:06,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 00:45:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:06,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 00:45:06,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:06,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 00:45:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:06,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-20 00:45:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:06,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:45:06,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:45:06,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610605962] [2023-12-20 00:45:06,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610605962] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:45:06,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:45:06,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:45:06,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250350510] [2023-12-20 00:45:06,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:45:06,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:45:06,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:45:06,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:45:06,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:45:06,388 INFO L87 Difference]: Start difference. First operand 1592 states and 2565 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:45:07,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:45:07,825 INFO L93 Difference]: Finished difference Result 3817 states and 6242 transitions. [2023-12-20 00:45:07,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:45:07,826 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 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 151 [2023-12-20 00:45:07,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:45:07,836 INFO L225 Difference]: With dead ends: 3817 [2023-12-20 00:45:07,836 INFO L226 Difference]: Without dead ends: 2242 [2023-12-20 00:45:07,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:45:07,841 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 1157 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 1561 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 1655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:45:07,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1176 Valid, 840 Invalid, 1655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1561 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 00:45:07,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2242 states. [2023-12-20 00:45:07,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2242 to 1592. [2023-12-20 00:45:07,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 1450 states have (on average 1.610344827586207) internal successors, (2335), 1456 states have internal predecessors, (2335), 107 states have call successors, (107), 31 states have call predecessors, (107), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-12-20 00:45:07,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 2560 transitions. [2023-12-20 00:45:07,915 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 2560 transitions. Word has length 151 [2023-12-20 00:45:07,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:45:07,915 INFO L495 AbstractCegarLoop]: Abstraction has 1592 states and 2560 transitions. [2023-12-20 00:45:07,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:45:07,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 2560 transitions. [2023-12-20 00:45:07,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-20 00:45:07,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:45:07,917 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:45:07,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 00:45:07,917 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:45:07,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:45:07,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1855367180, now seen corresponding path program 1 times [2023-12-20 00:45:07,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:45:07,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245603308] [2023-12-20 00:45:07,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:45:07,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:45:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:07,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:45:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:08,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 00:45:08,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:08,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 00:45:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:08,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 00:45:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:08,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-20 00:45:08,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:08,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:45:08,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:45:08,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245603308] [2023-12-20 00:45:08,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245603308] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:45:08,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:45:08,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:45:08,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865803796] [2023-12-20 00:45:08,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:45:08,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:45:08,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:45:08,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:45:08,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:45:08,128 INFO L87 Difference]: Start difference. First operand 1592 states and 2560 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:45:09,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:45:09,646 INFO L93 Difference]: Finished difference Result 3805 states and 6204 transitions. [2023-12-20 00:45:09,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:45:09,646 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 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 151 [2023-12-20 00:45:09,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:45:09,656 INFO L225 Difference]: With dead ends: 3805 [2023-12-20 00:45:09,656 INFO L226 Difference]: Without dead ends: 2230 [2023-12-20 00:45:09,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:45:09,661 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 1011 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 1706 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 1773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 00:45:09,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1030 Valid, 1000 Invalid, 1773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1706 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 00:45:09,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2023-12-20 00:45:09,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 1592. [2023-12-20 00:45:09,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 1450 states have (on average 1.606896551724138) internal successors, (2330), 1456 states have internal predecessors, (2330), 107 states have call successors, (107), 31 states have call predecessors, (107), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-12-20 00:45:09,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 2555 transitions. [2023-12-20 00:45:09,756 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 2555 transitions. Word has length 151 [2023-12-20 00:45:09,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:45:09,757 INFO L495 AbstractCegarLoop]: Abstraction has 1592 states and 2555 transitions. [2023-12-20 00:45:09,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:45:09,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 2555 transitions. [2023-12-20 00:45:09,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-20 00:45:09,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:45:09,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:45:09,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 00:45:09,759 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:45:09,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:45:09,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1148770574, now seen corresponding path program 1 times [2023-12-20 00:45:09,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:45:09,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538331551] [2023-12-20 00:45:09,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:45:09,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:45:09,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:09,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:45:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:09,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 00:45:09,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:09,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 00:45:09,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:09,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 00:45:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:09,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-20 00:45:09,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:09,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:45:09,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:45:09,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538331551] [2023-12-20 00:45:09,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538331551] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:45:09,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:45:09,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:45:09,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75167079] [2023-12-20 00:45:09,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:45:09,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:45:09,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:45:09,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:45:09,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:45:09,989 INFO L87 Difference]: Start difference. First operand 1592 states and 2555 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:45:13,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:45:13,326 INFO L93 Difference]: Finished difference Result 5465 states and 8867 transitions. [2023-12-20 00:45:13,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 00:45:13,326 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 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 151 [2023-12-20 00:45:13,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:45:13,345 INFO L225 Difference]: With dead ends: 5465 [2023-12-20 00:45:13,345 INFO L226 Difference]: Without dead ends: 3890 [2023-12-20 00:45:13,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 00:45:13,351 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 1381 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 3336 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1399 SdHoareTripleChecker+Valid, 1960 SdHoareTripleChecker+Invalid, 3401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 00:45:13,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1399 Valid, 1960 Invalid, 3401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3336 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 00:45:13,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3890 states. [2023-12-20 00:45:13,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3890 to 2849. [2023-12-20 00:45:13,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2849 states, 2599 states have (on average 1.6002308580223163) internal successors, (4159), 2609 states have internal predecessors, (4159), 187 states have call successors, (187), 55 states have call predecessors, (187), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2023-12-20 00:45:13,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2849 states to 2849 states and 4566 transitions. [2023-12-20 00:45:13,512 INFO L78 Accepts]: Start accepts. Automaton has 2849 states and 4566 transitions. Word has length 151 [2023-12-20 00:45:13,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:45:13,513 INFO L495 AbstractCegarLoop]: Abstraction has 2849 states and 4566 transitions. [2023-12-20 00:45:13,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:45:13,513 INFO L276 IsEmpty]: Start isEmpty. Operand 2849 states and 4566 transitions. [2023-12-20 00:45:13,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-20 00:45:13,516 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:45:13,516 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:45:13,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 00:45:13,517 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:45:13,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:45:13,517 INFO L85 PathProgramCache]: Analyzing trace with hash 2095808460, now seen corresponding path program 1 times [2023-12-20 00:45:13,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:45:13,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989593031] [2023-12-20 00:45:13,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:45:13,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:45:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:13,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:45:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:13,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 00:45:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:13,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 00:45:13,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:13,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 00:45:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:13,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-20 00:45:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:13,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:45:13,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:45:13,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989593031] [2023-12-20 00:45:13,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989593031] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:45:13,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:45:13,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:45:13,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130097628] [2023-12-20 00:45:13,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:45:13,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:45:13,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:45:13,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:45:13,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:45:13,734 INFO L87 Difference]: Start difference. First operand 2849 states and 4566 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:45:16,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:45:16,988 INFO L93 Difference]: Finished difference Result 10010 states and 16218 transitions. [2023-12-20 00:45:16,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 00:45:16,988 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 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 151 [2023-12-20 00:45:16,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:45:17,015 INFO L225 Difference]: With dead ends: 10010 [2023-12-20 00:45:17,015 INFO L226 Difference]: Without dead ends: 7178 [2023-12-20 00:45:17,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 00:45:17,023 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 1380 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 3323 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1398 SdHoareTripleChecker+Valid, 1960 SdHoareTripleChecker+Invalid, 3388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 00:45:17,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1398 Valid, 1960 Invalid, 3388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3323 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 00:45:17,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7178 states. [2023-12-20 00:45:17,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7178 to 5360. [2023-12-20 00:45:17,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5360 states, 4894 states have (on average 1.5952186350633428) internal successors, (7807), 4912 states have internal predecessors, (7807), 347 states have call successors, (347), 103 states have call predecessors, (347), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2023-12-20 00:45:17,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5360 states to 5360 states and 8596 transitions. [2023-12-20 00:45:17,277 INFO L78 Accepts]: Start accepts. Automaton has 5360 states and 8596 transitions. Word has length 151 [2023-12-20 00:45:17,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:45:17,277 INFO L495 AbstractCegarLoop]: Abstraction has 5360 states and 8596 transitions. [2023-12-20 00:45:17,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:45:17,277 INFO L276 IsEmpty]: Start isEmpty. Operand 5360 states and 8596 transitions. [2023-12-20 00:45:17,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-20 00:45:17,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:45:17,281 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:45:17,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 00:45:17,281 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:45:17,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:45:17,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1337325234, now seen corresponding path program 1 times [2023-12-20 00:45:17,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:45:17,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746372160] [2023-12-20 00:45:17,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:45:17,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:45:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:17,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:45:17,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:17,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 00:45:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:17,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 00:45:17,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:17,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 00:45:17,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:17,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-20 00:45:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:17,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:45:17,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:45:17,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746372160] [2023-12-20 00:45:17,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746372160] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:45:17,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:45:17,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:45:17,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435280537] [2023-12-20 00:45:17,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:45:17,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:45:17,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:45:17,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:45:17,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:45:17,514 INFO L87 Difference]: Start difference. First operand 5360 states and 8596 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:45:20,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:45:20,938 INFO L93 Difference]: Finished difference Result 19091 states and 30962 transitions. [2023-12-20 00:45:20,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 00:45:20,939 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 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 151 [2023-12-20 00:45:20,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:45:20,998 INFO L225 Difference]: With dead ends: 19091 [2023-12-20 00:45:20,998 INFO L226 Difference]: Without dead ends: 13748 [2023-12-20 00:45:21,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 00:45:21,022 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 1379 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 3310 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1397 SdHoareTripleChecker+Valid, 1960 SdHoareTripleChecker+Invalid, 3375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 00:45:21,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1397 Valid, 1960 Invalid, 3375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3310 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 00:45:21,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13748 states. [2023-12-20 00:45:21,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13748 to 10397. [2023-12-20 00:45:21,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10397 states, 9499 states have (on average 1.5922728708285083) internal successors, (15125), 9533 states have internal predecessors, (15125), 667 states have call successors, (667), 199 states have call predecessors, (667), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2023-12-20 00:45:21,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10397 states to 10397 states and 16732 transitions. [2023-12-20 00:45:21,559 INFO L78 Accepts]: Start accepts. Automaton has 10397 states and 16732 transitions. Word has length 151 [2023-12-20 00:45:21,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:45:21,559 INFO L495 AbstractCegarLoop]: Abstraction has 10397 states and 16732 transitions. [2023-12-20 00:45:21,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:45:21,560 INFO L276 IsEmpty]: Start isEmpty. Operand 10397 states and 16732 transitions. [2023-12-20 00:45:21,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-20 00:45:21,568 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:45:21,569 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:45:21,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 00:45:21,569 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:45:21,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:45:21,569 INFO L85 PathProgramCache]: Analyzing trace with hash 907233164, now seen corresponding path program 1 times [2023-12-20 00:45:21,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:45:21,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091370741] [2023-12-20 00:45:21,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:45:21,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:45:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:21,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:45:21,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:21,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 00:45:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:21,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 00:45:21,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:21,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 00:45:21,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:21,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-20 00:45:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:21,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:45:21,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:45:21,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091370741] [2023-12-20 00:45:21,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091370741] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:45:21,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:45:21,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:45:21,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090298922] [2023-12-20 00:45:21,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:45:21,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:45:21,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:45:21,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:45:21,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:45:21,843 INFO L87 Difference]: Start difference. First operand 10397 states and 16732 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:45:23,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:45:23,629 INFO L93 Difference]: Finished difference Result 24291 states and 39633 transitions. [2023-12-20 00:45:23,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:45:23,630 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 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 151 [2023-12-20 00:45:23,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:45:23,682 INFO L225 Difference]: With dead ends: 24291 [2023-12-20 00:45:23,682 INFO L226 Difference]: Without dead ends: 13911 [2023-12-20 00:45:23,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:45:23,719 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 1012 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 1660 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 1727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 00:45:23,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1031 Valid, 1000 Invalid, 1727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1660 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 00:45:23,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13911 states. [2023-12-20 00:45:24,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13911 to 10397. [2023-12-20 00:45:24,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10397 states, 9499 states have (on average 1.5887988209285189) internal successors, (15092), 9533 states have internal predecessors, (15092), 667 states have call successors, (667), 199 states have call predecessors, (667), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2023-12-20 00:45:24,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10397 states to 10397 states and 16699 transitions. [2023-12-20 00:45:24,315 INFO L78 Accepts]: Start accepts. Automaton has 10397 states and 16699 transitions. Word has length 151 [2023-12-20 00:45:24,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:45:24,316 INFO L495 AbstractCegarLoop]: Abstraction has 10397 states and 16699 transitions. [2023-12-20 00:45:24,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:45:24,317 INFO L276 IsEmpty]: Start isEmpty. Operand 10397 states and 16699 transitions. [2023-12-20 00:45:24,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-20 00:45:24,325 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:45:24,326 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:45:24,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 00:45:24,326 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:45:24,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:45:24,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1395280270, now seen corresponding path program 1 times [2023-12-20 00:45:24,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:45:24,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331487471] [2023-12-20 00:45:24,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:45:24,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:45:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:24,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:45:24,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:24,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 00:45:24,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:24,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 00:45:24,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:24,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 00:45:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:24,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-20 00:45:24,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:24,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:45:24,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:45:24,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331487471] [2023-12-20 00:45:24,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331487471] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:45:24,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:45:24,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:45:24,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503762568] [2023-12-20 00:45:24,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:45:24,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:45:24,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:45:24,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:45:24,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:45:24,534 INFO L87 Difference]: Start difference. First operand 10397 states and 16699 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:45:28,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:45:28,415 INFO L93 Difference]: Finished difference Result 41956 states and 67934 transitions. [2023-12-20 00:45:28,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 00:45:28,415 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 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 151 [2023-12-20 00:45:28,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:45:28,539 INFO L225 Difference]: With dead ends: 41956 [2023-12-20 00:45:28,539 INFO L226 Difference]: Without dead ends: 31576 [2023-12-20 00:45:28,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 00:45:28,576 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 1770 mSDsluCounter, 1503 mSDsCounter, 0 mSdLazyCounter, 3262 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1800 SdHoareTripleChecker+Valid, 1953 SdHoareTripleChecker+Invalid, 3330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 00:45:28,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1800 Valid, 1953 Invalid, 3330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3262 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 00:45:28,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31576 states. [2023-12-20 00:45:29,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31576 to 20471. [2023-12-20 00:45:29,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20471 states, 18741 states have (on average 1.5871084787364602) internal successors, (29744), 18807 states have internal predecessors, (29744), 1275 states have call successors, (1275), 391 states have call predecessors, (1275), 454 states have return successors, (2066), 1336 states have call predecessors, (2066), 1273 states have call successors, (2066) [2023-12-20 00:45:29,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20471 states to 20471 states and 33085 transitions. [2023-12-20 00:45:29,879 INFO L78 Accepts]: Start accepts. Automaton has 20471 states and 33085 transitions. Word has length 151 [2023-12-20 00:45:29,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:45:29,879 INFO L495 AbstractCegarLoop]: Abstraction has 20471 states and 33085 transitions. [2023-12-20 00:45:29,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:45:29,880 INFO L276 IsEmpty]: Start isEmpty. Operand 20471 states and 33085 transitions. [2023-12-20 00:45:29,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-20 00:45:29,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:45:29,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:45:29,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 00:45:29,892 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:45:29,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:45:29,892 INFO L85 PathProgramCache]: Analyzing trace with hash 302645068, now seen corresponding path program 1 times [2023-12-20 00:45:29,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:45:29,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388002647] [2023-12-20 00:45:29,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:45:29,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:45:29,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:29,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:45:29,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:30,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 00:45:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:30,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 00:45:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:30,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 00:45:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:30,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-20 00:45:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:30,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:45:30,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:45:30,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388002647] [2023-12-20 00:45:30,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388002647] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:45:30,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:45:30,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:45:30,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254310796] [2023-12-20 00:45:30,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:45:30,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:45:30,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:45:30,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:45:30,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:45:30,097 INFO L87 Difference]: Start difference. First operand 20471 states and 33085 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:45:35,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:45:35,070 INFO L93 Difference]: Finished difference Result 82124 states and 133790 transitions. [2023-12-20 00:45:35,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 00:45:35,070 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 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 151 [2023-12-20 00:45:35,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:45:35,320 INFO L225 Difference]: With dead ends: 82124 [2023-12-20 00:45:35,321 INFO L226 Difference]: Without dead ends: 61670 [2023-12-20 00:45:35,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 00:45:35,389 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 1467 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 3864 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 3931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 00:45:35,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1949 Invalid, 3931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3864 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 00:45:35,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61670 states. [2023-12-20 00:45:37,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61670 to 39976. [2023-12-20 00:45:37,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39976 states, 36614 states have (on average 1.5828371661113236) internal successors, (57954), 36744 states have internal predecessors, (57954), 2459 states have call successors, (2459), 775 states have call predecessors, (2459), 902 states have return successors, (4772), 2584 states have call predecessors, (4772), 2457 states have call successors, (4772) [2023-12-20 00:45:37,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39976 states to 39976 states and 65185 transitions. [2023-12-20 00:45:37,445 INFO L78 Accepts]: Start accepts. Automaton has 39976 states and 65185 transitions. Word has length 151 [2023-12-20 00:45:37,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:45:37,446 INFO L495 AbstractCegarLoop]: Abstraction has 39976 states and 65185 transitions. [2023-12-20 00:45:37,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:45:37,446 INFO L276 IsEmpty]: Start isEmpty. Operand 39976 states and 65185 transitions. [2023-12-20 00:45:37,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-20 00:45:37,470 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:45:37,470 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:45:37,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 00:45:37,470 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:45:37,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:45:37,471 INFO L85 PathProgramCache]: Analyzing trace with hash -979527218, now seen corresponding path program 1 times [2023-12-20 00:45:37,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:45:37,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135029315] [2023-12-20 00:45:37,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:45:37,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:45:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:37,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:45:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:37,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 00:45:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:37,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 00:45:37,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:37,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 00:45:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:37,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-20 00:45:37,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:37,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:45:37,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:45:37,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135029315] [2023-12-20 00:45:37,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135029315] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:45:37,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:45:37,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:45:37,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610946031] [2023-12-20 00:45:37,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:45:37,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:45:37,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:45:37,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:45:37,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:45:37,838 INFO L87 Difference]: Start difference. First operand 39976 states and 65185 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:45:43,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:45:43,490 INFO L93 Difference]: Finished difference Result 157977 states and 259760 transitions. [2023-12-20 00:45:43,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 00:45:43,490 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 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 151 [2023-12-20 00:45:43,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:45:44,130 INFO L225 Difference]: With dead ends: 157977 [2023-12-20 00:45:44,130 INFO L226 Difference]: Without dead ends: 118018 [2023-12-20 00:45:44,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 00:45:44,239 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 1665 mSDsluCounter, 1503 mSDsCounter, 0 mSdLazyCounter, 3217 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1695 SdHoareTripleChecker+Valid, 1953 SdHoareTripleChecker+Invalid, 3285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 00:45:44,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1695 Valid, 1953 Invalid, 3285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3217 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 00:45:44,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118018 states. [2023-12-20 00:45:47,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118018 to 79754. [2023-12-20 00:45:47,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79754 states, 73192 states have (on average 1.5836430210952017) internal successors, (115910), 73450 states have internal predecessors, (115910), 4763 states have call successors, (4763), 1543 states have call predecessors, (4763), 1798 states have return successors, (11578), 5016 states have call predecessors, (11578), 4761 states have call successors, (11578) [2023-12-20 00:45:48,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79754 states to 79754 states and 132251 transitions. [2023-12-20 00:45:48,198 INFO L78 Accepts]: Start accepts. Automaton has 79754 states and 132251 transitions. Word has length 151 [2023-12-20 00:45:48,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:45:48,199 INFO L495 AbstractCegarLoop]: Abstraction has 79754 states and 132251 transitions. [2023-12-20 00:45:48,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:45:48,200 INFO L276 IsEmpty]: Start isEmpty. Operand 79754 states and 132251 transitions. [2023-12-20 00:45:48,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-20 00:45:48,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:45:48,250 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:45:48,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 00:45:48,250 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:45:48,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:45:48,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1593437392, now seen corresponding path program 1 times [2023-12-20 00:45:48,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:45:48,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057263591] [2023-12-20 00:45:48,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:45:48,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:45:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:48,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:45:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:48,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 00:45:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:48,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 00:45:48,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:48,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 00:45:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:48,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-20 00:45:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:48,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:45:48,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:45:48,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057263591] [2023-12-20 00:45:48,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057263591] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:45:48,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:45:48,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:45:48,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9994929] [2023-12-20 00:45:48,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:45:48,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:45:48,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:45:48,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:45:48,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:45:48,457 INFO L87 Difference]: Start difference. First operand 79754 states and 132251 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:45:57,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:45:57,121 INFO L93 Difference]: Finished difference Result 311353 states and 520360 transitions. [2023-12-20 00:45:57,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 00:45:57,121 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 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 151 [2023-12-20 00:45:57,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:45:58,128 INFO L225 Difference]: With dead ends: 311353 [2023-12-20 00:45:58,128 INFO L226 Difference]: Without dead ends: 231616 [2023-12-20 00:45:58,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 00:45:58,445 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 1435 mSDsluCounter, 1503 mSDsCounter, 0 mSdLazyCounter, 3687 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1452 SdHoareTripleChecker+Valid, 1953 SdHoareTripleChecker+Invalid, 3754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 00:45:58,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1452 Valid, 1953 Invalid, 3754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3687 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 00:45:58,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231616 states. [2023-12-20 00:46:04,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231616 to 159307. [2023-12-20 00:46:05,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159307 states, 146473 states have (on average 1.5844012207027915) internal successors, (232072), 146987 states have internal predecessors, (232072), 9243 states have call successors, (9243), 3079 states have call predecessors, (9243), 3590 states have return successors, (29436), 9752 states have call predecessors, (29436), 9241 states have call successors, (29436) [2023-12-20 00:46:06,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159307 states to 159307 states and 270751 transitions. [2023-12-20 00:46:06,141 INFO L78 Accepts]: Start accepts. Automaton has 159307 states and 270751 transitions. Word has length 151 [2023-12-20 00:46:06,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:46:06,141 INFO L495 AbstractCegarLoop]: Abstraction has 159307 states and 270751 transitions. [2023-12-20 00:46:06,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:46:06,142 INFO L276 IsEmpty]: Start isEmpty. Operand 159307 states and 270751 transitions. [2023-12-20 00:46:06,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-20 00:46:06,262 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:46:06,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:46:06,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 00:46:06,263 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:46:06,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:46:06,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1260794254, now seen corresponding path program 1 times [2023-12-20 00:46:06,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:46:06,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356783959] [2023-12-20 00:46:06,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:46:06,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:46:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:46:06,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:46:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:46:06,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 00:46:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:46:06,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 00:46:06,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:46:06,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 00:46:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:46:06,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-20 00:46:06,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:46:06,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:46:06,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:46:06,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356783959] [2023-12-20 00:46:06,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356783959] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:46:06,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:46:06,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:46:06,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961103075] [2023-12-20 00:46:06,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:46:06,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:46:06,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:46:06,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:46:06,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:46:06,483 INFO L87 Difference]: Start difference. First operand 159307 states and 270751 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:46:13,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:46:13,987 INFO L93 Difference]: Finished difference Result 366035 states and 638542 transitions. [2023-12-20 00:46:13,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:46:13,987 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 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 151 [2023-12-20 00:46:13,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:46:14,976 INFO L225 Difference]: With dead ends: 366035 [2023-12-20 00:46:14,976 INFO L226 Difference]: Without dead ends: 206745 [2023-12-20 00:46:15,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:46:15,372 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 1016 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 1592 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 1661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 00:46:15,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 999 Invalid, 1661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1592 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 00:46:15,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206745 states. [2023-12-20 00:46:21,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206745 to 159307. [2023-12-20 00:46:21,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159307 states, 146473 states have (on average 1.5808988687334866) internal successors, (231559), 146987 states have internal predecessors, (231559), 9243 states have call successors, (9243), 3079 states have call predecessors, (9243), 3590 states have return successors, (29436), 9752 states have call predecessors, (29436), 9241 states have call successors, (29436) [2023-12-20 00:46:22,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159307 states to 159307 states and 270238 transitions. [2023-12-20 00:46:22,820 INFO L78 Accepts]: Start accepts. Automaton has 159307 states and 270238 transitions. Word has length 151 [2023-12-20 00:46:22,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:46:22,820 INFO L495 AbstractCegarLoop]: Abstraction has 159307 states and 270238 transitions. [2023-12-20 00:46:22,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:46:22,821 INFO L276 IsEmpty]: Start isEmpty. Operand 159307 states and 270238 transitions. [2023-12-20 00:46:22,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-20 00:46:22,895 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:46:22,896 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:46:22,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 00:46:22,897 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:46:22,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:46:22,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1105240816, now seen corresponding path program 1 times [2023-12-20 00:46:22,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:46:22,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997679596] [2023-12-20 00:46:22,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:46:22,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:46:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:46:22,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:46:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:46:23,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 00:46:23,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:46:23,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 00:46:23,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:46:23,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 00:46:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:46:23,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-20 00:46:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:46:23,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:46:23,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:46:23,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997679596] [2023-12-20 00:46:23,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997679596] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:46:23,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:46:23,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:46:23,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428239384] [2023-12-20 00:46:23,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:46:23,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:46:23,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:46:23,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:46:23,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:46:23,120 INFO L87 Difference]: Start difference. First operand 159307 states and 270238 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:46:37,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:46:37,541 INFO L93 Difference]: Finished difference Result 603510 states and 1034470 transitions. [2023-12-20 00:46:37,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 00:46:37,542 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 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 151 [2023-12-20 00:46:37,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:46:39,899 INFO L225 Difference]: With dead ends: 603510 [2023-12-20 00:46:39,900 INFO L226 Difference]: Without dead ends: 444220 [2023-12-20 00:46:40,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 00:46:40,487 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 1409 mSDsluCounter, 1503 mSDsCounter, 0 mSdLazyCounter, 3551 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1426 SdHoareTripleChecker+Valid, 1953 SdHoareTripleChecker+Invalid, 3618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:46:40,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1426 Valid, 1953 Invalid, 3618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3551 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-20 00:46:40,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444220 states.