/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.08.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 00:43:15,589 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 00:43:15,633 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 00:43:15,637 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 00:43:15,637 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 00:43:15,653 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 00:43:15,654 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 00:43:15,654 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 00:43:15,655 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 00:43:15,655 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 00:43:15,656 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 00:43:15,656 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 00:43:15,657 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 00:43:15,657 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 00:43:15,657 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 00:43:15,658 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 00:43:15,658 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 00:43:15,658 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 00:43:15,659 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 00:43:15,659 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 00:43:15,659 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 00:43:15,660 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 00:43:15,660 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 00:43:15,660 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 00:43:15,660 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 00:43:15,660 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 00:43:15,661 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 00:43:15,661 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 00:43:15,661 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 00:43:15,661 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 00:43:15,662 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 00:43:15,662 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 00:43:15,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 00:43:15,662 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 00:43:15,662 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 00:43:15,663 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 00:43:15,663 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 00:43:15,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 00:43:15,663 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 00:43:15,663 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 00:43:15,663 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 00:43:15,664 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 00:43:15,664 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 00:43:15,664 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 00:43:15,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 00:43:15,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 00:43:15,861 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 00:43:15,862 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 00:43:15,862 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 00:43:15,863 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.08.cil-2.c [2023-12-20 00:43:17,029 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 00:43:17,190 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 00:43:17,191 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.08.cil-2.c [2023-12-20 00:43:17,201 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa9e9342d/fde10126410a45948161854ef6d43d20/FLAG0c2b6a514 [2023-12-20 00:43:17,213 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa9e9342d/fde10126410a45948161854ef6d43d20 [2023-12-20 00:43:17,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 00:43:17,216 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 00:43:17,217 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 00:43:17,217 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 00:43:17,221 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 00:43:17,221 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:43:17" (1/1) ... [2023-12-20 00:43:17,222 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8f449ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:17, skipping insertion in model container [2023-12-20 00:43:17,222 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:43:17" (1/1) ... [2023-12-20 00:43:17,267 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 00:43:17,419 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.08.cil-2.c[671,684] [2023-12-20 00:43:17,517 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 00:43:17,527 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 00:43:17,535 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.08.cil-2.c[671,684] [2023-12-20 00:43:17,585 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 00:43:17,601 INFO L206 MainTranslator]: Completed translation [2023-12-20 00:43:17,602 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:17 WrapperNode [2023-12-20 00:43:17,602 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 00:43:17,603 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 00:43:17,603 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 00:43:17,603 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 00:43:17,610 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:17" (1/1) ... [2023-12-20 00:43:17,619 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:17" (1/1) ... [2023-12-20 00:43:17,659 INFO L138 Inliner]: procedures = 44, calls = 56, calls flagged for inlining = 27, calls inlined = 27, statements flattened = 645 [2023-12-20 00:43:17,659 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 00:43:17,660 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 00:43:17,660 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 00:43:17,660 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 00:43:17,672 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:17" (1/1) ... [2023-12-20 00:43:17,672 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:17" (1/1) ... [2023-12-20 00:43:17,676 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:17" (1/1) ... [2023-12-20 00:43:17,690 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 00:43:17,690 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:17" (1/1) ... [2023-12-20 00:43:17,691 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:17" (1/1) ... [2023-12-20 00:43:17,702 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:17" (1/1) ... [2023-12-20 00:43:17,711 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:17" (1/1) ... [2023-12-20 00:43:17,715 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:17" (1/1) ... [2023-12-20 00:43:17,717 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:17" (1/1) ... [2023-12-20 00:43:17,730 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 00:43:17,731 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 00:43:17,731 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 00:43:17,731 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 00:43:17,732 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:17" (1/1) ... [2023-12-20 00:43:17,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 00:43:17,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:43:17,760 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 00:43:17,768 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 00:43:17,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 00:43:17,788 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-20 00:43:17,789 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-20 00:43:17,789 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-20 00:43:17,789 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-20 00:43:17,789 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-20 00:43:17,791 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-20 00:43:17,791 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-20 00:43:17,791 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-20 00:43:17,792 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-20 00:43:17,792 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-20 00:43:17,792 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-20 00:43:17,792 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-20 00:43:17,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 00:43:17,792 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-20 00:43:17,792 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-20 00:43:17,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 00:43:17,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 00:43:17,924 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 00:43:17,928 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 00:43:18,493 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 00:43:18,581 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 00:43:18,582 INFO L309 CfgBuilder]: Removed 11 assume(true) statements. [2023-12-20 00:43:18,582 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:43:18 BoogieIcfgContainer [2023-12-20 00:43:18,582 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 00:43:18,585 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 00:43:18,585 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 00:43:18,588 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 00:43:18,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 12:43:17" (1/3) ... [2023-12-20 00:43:18,590 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a05c4ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:43:18, skipping insertion in model container [2023-12-20 00:43:18,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:17" (2/3) ... [2023-12-20 00:43:18,590 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a05c4ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:43:18, skipping insertion in model container [2023-12-20 00:43:18,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:43:18" (3/3) ... [2023-12-20 00:43:18,592 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.08.cil-2.c [2023-12-20 00:43:18,606 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 00:43:18,607 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 00:43:18,648 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 00:43:18,653 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;@3a755af7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 00:43:18,653 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 00:43:18,658 INFO L276 IsEmpty]: Start isEmpty. Operand has 264 states, 231 states have (on average 1.7272727272727273) internal successors, (399), 235 states have internal predecessors, (399), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-20 00:43:18,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-20 00:43:18,669 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:18,670 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] [2023-12-20 00:43:18,670 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:18,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:18,675 INFO L85 PathProgramCache]: Analyzing trace with hash -304754819, now seen corresponding path program 1 times [2023-12-20 00:43:18,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:18,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357717599] [2023-12-20 00:43:18,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:18,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:18,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:43:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:19,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 00:43:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:19,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-20 00:43:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:19,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-20 00:43:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:19,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-20 00:43:19,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:19,203 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 00:43:19,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:19,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357717599] [2023-12-20 00:43:19,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357717599] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:43:19,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:43:19,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 00:43:19,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116327190] [2023-12-20 00:43:19,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:43:19,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 00:43:19,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:19,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 00:43:19,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:43:19,248 INFO L87 Difference]: Start difference. First operand has 264 states, 231 states have (on average 1.7272727272727273) internal successors, (399), 235 states have internal predecessors, (399), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 3 states have internal predecessors, (110), 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 00:43:20,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:20,530 INFO L93 Difference]: Finished difference Result 609 states and 1041 transitions. [2023-12-20 00:43:20,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 00:43:20,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 3 states have internal predecessors, (110), 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 121 [2023-12-20 00:43:20,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:20,544 INFO L225 Difference]: With dead ends: 609 [2023-12-20 00:43:20,544 INFO L226 Difference]: Without dead ends: 351 [2023-12-20 00:43:20,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 00:43:20,551 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 705 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:20,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 490 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 00:43:20,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-12-20 00:43:20,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 261. [2023-12-20 00:43:20,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 230 states have (on average 1.6217391304347826) internal successors, (373), 232 states have internal predecessors, (373), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-20 00:43:20,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 419 transitions. [2023-12-20 00:43:20,608 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 419 transitions. Word has length 121 [2023-12-20 00:43:20,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:43:20,609 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 419 transitions. [2023-12-20 00:43:20,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 3 states have internal predecessors, (110), 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 00:43:20,609 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 419 transitions. [2023-12-20 00:43:20,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-20 00:43:20,611 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:20,612 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] [2023-12-20 00:43:20,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 00:43:20,612 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:20,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:20,613 INFO L85 PathProgramCache]: Analyzing trace with hash -776111169, now seen corresponding path program 1 times [2023-12-20 00:43:20,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:20,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387917759] [2023-12-20 00:43:20,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:20,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:20,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:20,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:43:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:20,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 00:43:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:20,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-20 00:43:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:20,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-20 00:43:20,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:20,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-20 00:43:20,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:20,896 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 00:43:20,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:20,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387917759] [2023-12-20 00:43:20,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387917759] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:43:20,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:43:20,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 00:43:20,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202915864] [2023-12-20 00:43:20,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:43:20,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 00:43:20,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:20,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 00:43:20,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 00:43:20,904 INFO L87 Difference]: Start difference. First operand 261 states and 419 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 4 states have internal predecessors, (110), 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 00:43:22,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:22,869 INFO L93 Difference]: Finished difference Result 946 states and 1553 transitions. [2023-12-20 00:43:22,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 00:43:22,869 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 4 states have internal predecessors, (110), 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 121 [2023-12-20 00:43:22,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:22,874 INFO L225 Difference]: With dead ends: 946 [2023-12-20 00:43:22,874 INFO L226 Difference]: Without dead ends: 699 [2023-12-20 00:43:22,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:43:22,876 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 1057 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 1623 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 1723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:22,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 820 Invalid, 1723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1623 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 00:43:22,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2023-12-20 00:43:22,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 518. [2023-12-20 00:43:22,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 463 states have (on average 1.630669546436285) internal successors, (755), 466 states have internal predecessors, (755), 41 states have call successors, (41), 13 states have call predecessors, (41), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2023-12-20 00:43:22,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 838 transitions. [2023-12-20 00:43:22,933 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 838 transitions. Word has length 121 [2023-12-20 00:43:22,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:43:22,934 INFO L495 AbstractCegarLoop]: Abstraction has 518 states and 838 transitions. [2023-12-20 00:43:22,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 4 states have internal predecessors, (110), 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 00:43:22,934 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 838 transitions. [2023-12-20 00:43:22,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-20 00:43:22,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:22,941 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] [2023-12-20 00:43:22,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 00:43:22,942 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:22,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:22,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1052036481, now seen corresponding path program 1 times [2023-12-20 00:43:22,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:22,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992267849] [2023-12-20 00:43:22,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:22,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:22,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:23,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:43:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:23,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 00:43:23,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:23,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-20 00:43:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:23,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-20 00:43:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:23,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-20 00:43:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:23,200 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 00:43:23,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:23,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992267849] [2023-12-20 00:43:23,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992267849] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:43:23,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:43:23,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:43:23,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422737528] [2023-12-20 00:43:23,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:43:23,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:43:23,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:23,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:43:23,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:43:23,202 INFO L87 Difference]: Start difference. First operand 518 states and 838 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 00:43:25,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:25,802 INFO L93 Difference]: Finished difference Result 1561 states and 2563 transitions. [2023-12-20 00:43:25,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 00:43:25,803 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 121 [2023-12-20 00:43:25,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:25,810 INFO L225 Difference]: With dead ends: 1561 [2023-12-20 00:43:25,810 INFO L226 Difference]: Without dead ends: 1057 [2023-12-20 00:43:25,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 00:43:25,816 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 1076 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 2648 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1091 SdHoareTripleChecker+Valid, 1561 SdHoareTripleChecker+Invalid, 2705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:25,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1091 Valid, 1561 Invalid, 2705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2648 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 00:43:25,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2023-12-20 00:43:25,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 756. [2023-12-20 00:43:25,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 677 states have (on average 1.6233382570162482) internal successors, (1099), 681 states have internal predecessors, (1099), 58 states have call successors, (58), 19 states have call predecessors, (58), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2023-12-20 00:43:25,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 1218 transitions. [2023-12-20 00:43:25,891 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 1218 transitions. Word has length 121 [2023-12-20 00:43:25,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:43:25,891 INFO L495 AbstractCegarLoop]: Abstraction has 756 states and 1218 transitions. [2023-12-20 00:43:25,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 00:43:25,891 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 1218 transitions. [2023-12-20 00:43:25,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-20 00:43:25,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:25,893 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] [2023-12-20 00:43:25,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 00:43:25,894 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:25,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:25,895 INFO L85 PathProgramCache]: Analyzing trace with hash 337257533, now seen corresponding path program 1 times [2023-12-20 00:43:25,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:25,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556733656] [2023-12-20 00:43:25,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:25,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:25,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:25,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:43:25,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:26,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 00:43:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:26,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-20 00:43:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:26,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-20 00:43:26,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:26,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-20 00:43:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:26,097 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 00:43:26,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:26,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556733656] [2023-12-20 00:43:26,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556733656] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:43:26,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:43:26,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:43:26,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292446503] [2023-12-20 00:43:26,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:43:26,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:43:26,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:26,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:43:26,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:43:26,100 INFO L87 Difference]: Start difference. First operand 756 states and 1218 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 00:43:28,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:28,427 INFO L93 Difference]: Finished difference Result 2462 states and 4035 transitions. [2023-12-20 00:43:28,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 00:43:28,427 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 121 [2023-12-20 00:43:28,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:28,435 INFO L225 Difference]: With dead ends: 2462 [2023-12-20 00:43:28,435 INFO L226 Difference]: Without dead ends: 1720 [2023-12-20 00:43:28,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 00:43:28,445 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 1156 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 2191 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 2282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:28,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1171 Valid, 1014 Invalid, 2282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2191 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 00:43:28,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2023-12-20 00:43:28,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 1233. [2023-12-20 00:43:28,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1233 states, 1106 states have (on average 1.616636528028933) internal successors, (1788), 1112 states have internal predecessors, (1788), 92 states have call successors, (92), 31 states have call predecessors, (92), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2023-12-20 00:43:28,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 1983 transitions. [2023-12-20 00:43:28,527 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 1983 transitions. Word has length 121 [2023-12-20 00:43:28,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:43:28,528 INFO L495 AbstractCegarLoop]: Abstraction has 1233 states and 1983 transitions. [2023-12-20 00:43:28,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 00:43:28,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 1983 transitions. [2023-12-20 00:43:28,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-20 00:43:28,530 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:28,530 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] [2023-12-20 00:43:28,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 00:43:28,530 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:28,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:28,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1696136513, now seen corresponding path program 1 times [2023-12-20 00:43:28,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:28,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473593468] [2023-12-20 00:43:28,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:28,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:28,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:43:28,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:28,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 00:43:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:28,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-20 00:43:28,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:28,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-20 00:43:28,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:28,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-20 00:43:28,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:28,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:43:28,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:28,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473593468] [2023-12-20 00:43:28,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473593468] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:43:28,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:43:28,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:43:28,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514667310] [2023-12-20 00:43:28,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:43:28,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:43:28,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:28,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:43:28,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:43:28,758 INFO L87 Difference]: Start difference. First operand 1233 states and 1983 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 00:43:29,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:29,918 INFO L93 Difference]: Finished difference Result 2927 states and 4791 transitions. [2023-12-20 00:43:29,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:43:29,918 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 121 [2023-12-20 00:43:29,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:29,925 INFO L225 Difference]: With dead ends: 2927 [2023-12-20 00:43:29,925 INFO L226 Difference]: Without dead ends: 1708 [2023-12-20 00:43:29,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:43:29,930 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 889 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:29,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 663 Invalid, 1296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 00:43:29,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1708 states. [2023-12-20 00:43:29,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1708 to 1233. [2023-12-20 00:43:29,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1233 states, 1106 states have (on average 1.6121157323688968) internal successors, (1783), 1112 states have internal predecessors, (1783), 92 states have call successors, (92), 31 states have call predecessors, (92), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2023-12-20 00:43:29,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 1978 transitions. [2023-12-20 00:43:29,997 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 1978 transitions. Word has length 121 [2023-12-20 00:43:29,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:43:29,998 INFO L495 AbstractCegarLoop]: Abstraction has 1233 states and 1978 transitions. [2023-12-20 00:43:29,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 00:43:29,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 1978 transitions. [2023-12-20 00:43:29,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-20 00:43:29,999 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:29,999 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] [2023-12-20 00:43:30,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 00:43:30,000 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:30,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:30,000 INFO L85 PathProgramCache]: Analyzing trace with hash 732122109, now seen corresponding path program 1 times [2023-12-20 00:43:30,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:30,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212289893] [2023-12-20 00:43:30,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:30,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:30,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:43:30,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:30,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 00:43:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:30,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-20 00:43:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:30,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-20 00:43:30,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:30,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-20 00:43:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:30,197 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 00:43:30,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:30,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212289893] [2023-12-20 00:43:30,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212289893] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:43:30,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:43:30,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:43:30,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818090177] [2023-12-20 00:43:30,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:43:30,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:43:30,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:30,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:43:30,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:43:30,199 INFO L87 Difference]: Start difference. First operand 1233 states and 1978 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 00:43:31,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:31,476 INFO L93 Difference]: Finished difference Result 2921 states and 4765 transitions. [2023-12-20 00:43:31,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:43:31,476 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 121 [2023-12-20 00:43:31,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:31,487 INFO L225 Difference]: With dead ends: 2921 [2023-12-20 00:43:31,488 INFO L226 Difference]: Without dead ends: 1702 [2023-12-20 00:43:31,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:43:31,491 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 778 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:31,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 791 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 00:43:31,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2023-12-20 00:43:31,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1233. [2023-12-20 00:43:31,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1233 states, 1106 states have (on average 1.6075949367088607) internal successors, (1778), 1112 states have internal predecessors, (1778), 92 states have call successors, (92), 31 states have call predecessors, (92), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2023-12-20 00:43:31,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 1973 transitions. [2023-12-20 00:43:31,553 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 1973 transitions. Word has length 121 [2023-12-20 00:43:31,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:43:31,553 INFO L495 AbstractCegarLoop]: Abstraction has 1233 states and 1973 transitions. [2023-12-20 00:43:31,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 00:43:31,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 1973 transitions. [2023-12-20 00:43:31,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-20 00:43:31,555 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:31,555 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] [2023-12-20 00:43:31,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 00:43:31,555 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:31,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:31,555 INFO L85 PathProgramCache]: Analyzing trace with hash -575020289, now seen corresponding path program 1 times [2023-12-20 00:43:31,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:31,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128947591] [2023-12-20 00:43:31,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:31,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:31,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:43:31,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:31,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 00:43:31,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:31,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-20 00:43:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:31,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-20 00:43:31,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:31,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-20 00:43:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:31,717 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 00:43:31,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:31,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128947591] [2023-12-20 00:43:31,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128947591] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:43:31,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:43:31,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:43:31,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466927350] [2023-12-20 00:43:31,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:43:31,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:43:31,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:31,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:43:31,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:43:31,719 INFO L87 Difference]: Start difference. First operand 1233 states and 1973 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 00:43:32,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:32,746 INFO L93 Difference]: Finished difference Result 2914 states and 4737 transitions. [2023-12-20 00:43:32,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:43:32,747 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 121 [2023-12-20 00:43:32,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:32,754 INFO L225 Difference]: With dead ends: 2914 [2023-12-20 00:43:32,754 INFO L226 Difference]: Without dead ends: 1695 [2023-12-20 00:43:32,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:43:32,758 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 885 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 1268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:32,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 663 Invalid, 1268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 00:43:32,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2023-12-20 00:43:32,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1233. [2023-12-20 00:43:32,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1233 states, 1106 states have (on average 1.6030741410488245) internal successors, (1773), 1112 states have internal predecessors, (1773), 92 states have call successors, (92), 31 states have call predecessors, (92), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2023-12-20 00:43:32,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 1968 transitions. [2023-12-20 00:43:32,815 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 1968 transitions. Word has length 121 [2023-12-20 00:43:32,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:43:32,815 INFO L495 AbstractCegarLoop]: Abstraction has 1233 states and 1968 transitions. [2023-12-20 00:43:32,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 00:43:32,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 1968 transitions. [2023-12-20 00:43:32,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-20 00:43:32,817 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:32,817 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] [2023-12-20 00:43:32,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 00:43:32,817 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:32,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:32,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1322476477, now seen corresponding path program 1 times [2023-12-20 00:43:32,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:32,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119110321] [2023-12-20 00:43:32,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:32,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:32,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:43:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:32,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 00:43:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:32,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-20 00:43:32,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:33,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-20 00:43:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:33,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-20 00:43:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:33,010 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 00:43:33,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:33,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119110321] [2023-12-20 00:43:33,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119110321] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:43:33,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:43:33,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:43:33,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356620121] [2023-12-20 00:43:33,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:43:33,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:43:33,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:33,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:43:33,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:43:33,011 INFO L87 Difference]: Start difference. First operand 1233 states and 1968 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 00:43:35,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:35,274 INFO L93 Difference]: Finished difference Result 4168 states and 6736 transitions. [2023-12-20 00:43:35,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 00:43:35,274 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 121 [2023-12-20 00:43:35,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:35,287 INFO L225 Difference]: With dead ends: 4168 [2023-12-20 00:43:35,287 INFO L226 Difference]: Without dead ends: 2949 [2023-12-20 00:43:35,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 00:43:35,291 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 1050 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 2565 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1065 SdHoareTripleChecker+Valid, 1559 SdHoareTripleChecker+Invalid, 2624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:35,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1065 Valid, 1559 Invalid, 2624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2565 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 00:43:35,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2949 states. [2023-12-20 00:43:35,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2949 to 2200. [2023-12-20 00:43:35,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2200 states, 1977 states have (on average 1.5953464845725847) internal successors, (3154), 1987 states have internal predecessors, (3154), 160 states have call successors, (160), 55 states have call predecessors, (160), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2023-12-20 00:43:35,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 3507 transitions. [2023-12-20 00:43:35,411 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 3507 transitions. Word has length 121 [2023-12-20 00:43:35,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:43:35,411 INFO L495 AbstractCegarLoop]: Abstraction has 2200 states and 3507 transitions. [2023-12-20 00:43:35,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 00:43:35,411 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 3507 transitions. [2023-12-20 00:43:35,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-20 00:43:35,413 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:35,413 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] [2023-12-20 00:43:35,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 00:43:35,413 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:35,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:35,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1941449921, now seen corresponding path program 1 times [2023-12-20 00:43:35,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:35,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491490092] [2023-12-20 00:43:35,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:35,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:35,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:35,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:43:35,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:35,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 00:43:35,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:35,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-20 00:43:35,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:35,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-20 00:43:35,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:35,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-20 00:43:35,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:35,588 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 00:43:35,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:35,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491490092] [2023-12-20 00:43:35,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491490092] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:43:35,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:43:35,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:43:35,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294827246] [2023-12-20 00:43:35,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:43:35,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:43:35,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:35,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:43:35,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:43:35,590 INFO L87 Difference]: Start difference. First operand 2200 states and 3507 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 00:43:37,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:37,932 INFO L93 Difference]: Finished difference Result 7613 states and 12293 transitions. [2023-12-20 00:43:37,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 00:43:37,933 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 121 [2023-12-20 00:43:37,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:37,955 INFO L225 Difference]: With dead ends: 7613 [2023-12-20 00:43:37,955 INFO L226 Difference]: Without dead ends: 5427 [2023-12-20 00:43:37,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 00:43:37,960 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 1046 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 2537 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 1559 SdHoareTripleChecker+Invalid, 2596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:37,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1061 Valid, 1559 Invalid, 2596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2537 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 00:43:37,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5427 states. [2023-12-20 00:43:38,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5427 to 4143. [2023-12-20 00:43:38,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4143 states, 3728 states have (on average 1.5906652360515021) internal successors, (5930), 3746 states have internal predecessors, (5930), 296 states have call successors, (296), 103 states have call predecessors, (296), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2023-12-20 00:43:38,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4143 states to 4143 states and 6617 transitions. [2023-12-20 00:43:38,158 INFO L78 Accepts]: Start accepts. Automaton has 4143 states and 6617 transitions. Word has length 121 [2023-12-20 00:43:38,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:43:38,158 INFO L495 AbstractCegarLoop]: Abstraction has 4143 states and 6617 transitions. [2023-12-20 00:43:38,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 00:43:38,159 INFO L276 IsEmpty]: Start isEmpty. Operand 4143 states and 6617 transitions. [2023-12-20 00:43:38,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-20 00:43:38,164 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:38,165 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] [2023-12-20 00:43:38,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 00:43:38,165 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:38,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:38,165 INFO L85 PathProgramCache]: Analyzing trace with hash -340378815, now seen corresponding path program 1 times [2023-12-20 00:43:38,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:38,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755933404] [2023-12-20 00:43:38,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:38,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:38,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:43:38,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:38,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 00:43:38,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:38,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-20 00:43:38,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:38,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-20 00:43:38,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:38,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-20 00:43:38,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:38,335 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 00:43:38,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:38,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755933404] [2023-12-20 00:43:38,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755933404] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:43:38,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:43:38,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:43:38,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282984998] [2023-12-20 00:43:38,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:43:38,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:43:38,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:38,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:43:38,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:43:38,337 INFO L87 Difference]: Start difference. First operand 4143 states and 6617 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 00:43:40,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:40,843 INFO L93 Difference]: Finished difference Result 16180 states and 26163 transitions. [2023-12-20 00:43:40,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 00:43:40,844 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 121 [2023-12-20 00:43:40,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:40,890 INFO L225 Difference]: With dead ends: 16180 [2023-12-20 00:43:40,890 INFO L226 Difference]: Without dead ends: 12051 [2023-12-20 00:43:40,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 00:43:40,901 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 1339 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 2514 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1363 SdHoareTripleChecker+Valid, 1552 SdHoareTripleChecker+Invalid, 2576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:40,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1363 Valid, 1552 Invalid, 2576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2514 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 00:43:40,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12051 states. [2023-12-20 00:43:41,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12051 to 8010. [2023-12-20 00:43:41,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8010 states, 7227 states have (on average 1.5890410958904109) internal successors, (11484), 7261 states have internal predecessors, (11484), 552 states have call successors, (552), 199 states have call predecessors, (552), 230 states have return successors, (825), 581 states have call predecessors, (825), 550 states have call successors, (825) [2023-12-20 00:43:41,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8010 states to 8010 states and 12861 transitions. [2023-12-20 00:43:41,387 INFO L78 Accepts]: Start accepts. Automaton has 8010 states and 12861 transitions. Word has length 121 [2023-12-20 00:43:41,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:43:41,387 INFO L495 AbstractCegarLoop]: Abstraction has 8010 states and 12861 transitions. [2023-12-20 00:43:41,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 00:43:41,388 INFO L276 IsEmpty]: Start isEmpty. Operand 8010 states and 12861 transitions. [2023-12-20 00:43:41,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-20 00:43:41,394 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:41,394 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] [2023-12-20 00:43:41,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 00:43:41,394 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:41,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:41,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1397110017, now seen corresponding path program 1 times [2023-12-20 00:43:41,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:41,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408861018] [2023-12-20 00:43:41,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:41,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:41,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:43:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:41,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 00:43:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:41,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-20 00:43:41,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:41,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-20 00:43:41,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:41,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-20 00:43:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:41,566 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 00:43:41,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:41,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408861018] [2023-12-20 00:43:41,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408861018] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:43:41,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:43:41,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:43:41,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986044622] [2023-12-20 00:43:41,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:43:41,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:43:41,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:41,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:43:41,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:43:41,568 INFO L87 Difference]: Start difference. First operand 8010 states and 12861 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 00:43:44,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:44,521 INFO L93 Difference]: Finished difference Result 31201 states and 50697 transitions. [2023-12-20 00:43:44,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 00:43:44,522 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 121 [2023-12-20 00:43:44,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:44,607 INFO L225 Difference]: With dead ends: 31201 [2023-12-20 00:43:44,607 INFO L226 Difference]: Without dead ends: 23205 [2023-12-20 00:43:44,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 00:43:44,637 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 1179 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 2639 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 2726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:44,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1193 Valid, 1062 Invalid, 2726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2639 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 00:43:44,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23205 states. [2023-12-20 00:43:45,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23205 to 15423. [2023-12-20 00:43:45,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15423 states, 13920 states have (on average 1.583764367816092) internal successors, (22046), 13986 states have internal predecessors, (22046), 1048 states have call successors, (1048), 391 states have call predecessors, (1048), 454 states have return successors, (1839), 1109 states have call predecessors, (1839), 1046 states have call successors, (1839) [2023-12-20 00:43:45,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15423 states to 15423 states and 24933 transitions. [2023-12-20 00:43:45,589 INFO L78 Accepts]: Start accepts. Automaton has 15423 states and 24933 transitions. Word has length 121 [2023-12-20 00:43:45,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:43:45,590 INFO L495 AbstractCegarLoop]: Abstraction has 15423 states and 24933 transitions. [2023-12-20 00:43:45,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 00:43:45,590 INFO L276 IsEmpty]: Start isEmpty. Operand 15423 states and 24933 transitions. [2023-12-20 00:43:45,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-20 00:43:45,601 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:45,601 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] [2023-12-20 00:43:45,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 00:43:45,601 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:45,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:45,602 INFO L85 PathProgramCache]: Analyzing trace with hash -45724799, now seen corresponding path program 1 times [2023-12-20 00:43:45,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:45,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855538912] [2023-12-20 00:43:45,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:45,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:45,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:45,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:43:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:45,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 00:43:45,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:45,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-20 00:43:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:45,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-20 00:43:45,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:45,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-20 00:43:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:45,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:43:45,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:45,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855538912] [2023-12-20 00:43:45,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855538912] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:43:45,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:43:45,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:43:45,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120960853] [2023-12-20 00:43:45,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:43:45,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:43:45,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:45,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:43:45,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:43:45,759 INFO L87 Difference]: Start difference. First operand 15423 states and 24933 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 00:43:47,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:47,355 INFO L93 Difference]: Finished difference Result 35445 states and 58291 transitions. [2023-12-20 00:43:47,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:43:47,357 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 121 [2023-12-20 00:43:47,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:47,429 INFO L225 Difference]: With dead ends: 35445 [2023-12-20 00:43:47,429 INFO L226 Difference]: Without dead ends: 20036 [2023-12-20 00:43:47,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:43:47,477 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 780 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:47,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 790 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1245 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 00:43:47,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20036 states. [2023-12-20 00:43:48,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20036 to 15423. [2023-12-20 00:43:48,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15423 states, 13920 states have (on average 1.579094827586207) internal successors, (21981), 13986 states have internal predecessors, (21981), 1048 states have call successors, (1048), 391 states have call predecessors, (1048), 454 states have return successors, (1839), 1109 states have call predecessors, (1839), 1046 states have call successors, (1839) [2023-12-20 00:43:48,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15423 states to 15423 states and 24868 transitions. [2023-12-20 00:43:48,449 INFO L78 Accepts]: Start accepts. Automaton has 15423 states and 24868 transitions. Word has length 121 [2023-12-20 00:43:48,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:43:48,450 INFO L495 AbstractCegarLoop]: Abstraction has 15423 states and 24868 transitions. [2023-12-20 00:43:48,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 00:43:48,450 INFO L276 IsEmpty]: Start isEmpty. Operand 15423 states and 24868 transitions. [2023-12-20 00:43:48,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-20 00:43:48,460 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:48,460 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] [2023-12-20 00:43:48,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 00:43:48,461 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:48,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:48,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1664699713, now seen corresponding path program 1 times [2023-12-20 00:43:48,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:48,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716335806] [2023-12-20 00:43:48,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:48,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:48,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:43:48,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:48,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 00:43:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:48,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-20 00:43:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:48,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-20 00:43:48,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:48,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-20 00:43:48,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:48,637 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 00:43:48,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:48,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716335806] [2023-12-20 00:43:48,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716335806] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:43:48,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:43:48,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:43:48,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577500723] [2023-12-20 00:43:48,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:43:48,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:43:48,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:48,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:43:48,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:43:48,640 INFO L87 Difference]: Start difference. First operand 15423 states and 24868 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 00:43:51,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:51,738 INFO L93 Difference]: Finished difference Result 59002 states and 96247 transitions. [2023-12-20 00:43:51,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 00:43:51,739 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 121 [2023-12-20 00:43:51,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:51,870 INFO L225 Difference]: With dead ends: 59002 [2023-12-20 00:43:51,870 INFO L226 Difference]: Without dead ends: 43593 [2023-12-20 00:43:51,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 00:43:51,905 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 1225 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 2463 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 1552 SdHoareTripleChecker+Invalid, 2525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:51,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1249 Valid, 1552 Invalid, 2525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2463 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 00:43:51,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43593 states. [2023-12-20 00:43:53,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43593 to 30633. [2023-12-20 00:43:53,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30633 states, 27722 states have (on average 1.577988601111031) internal successors, (43745), 27852 states have internal predecessors, (43745), 2008 states have call successors, (2008), 775 states have call predecessors, (2008), 902 states have return successors, (4321), 2133 states have call predecessors, (4321), 2006 states have call successors, (4321) [2023-12-20 00:43:53,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30633 states to 30633 states and 50074 transitions. [2023-12-20 00:43:53,237 INFO L78 Accepts]: Start accepts. Automaton has 30633 states and 50074 transitions. Word has length 121 [2023-12-20 00:43:53,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:43:53,238 INFO L495 AbstractCegarLoop]: Abstraction has 30633 states and 50074 transitions. [2023-12-20 00:43:53,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 00:43:53,238 INFO L276 IsEmpty]: Start isEmpty. Operand 30633 states and 50074 transitions. [2023-12-20 00:43:53,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-20 00:43:53,256 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:53,256 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] [2023-12-20 00:43:53,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 00:43:53,257 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:53,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:53,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1746758593, now seen corresponding path program 1 times [2023-12-20 00:43:53,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:53,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319782980] [2023-12-20 00:43:53,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:53,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:53,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:53,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:43:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:53,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 00:43:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:53,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-20 00:43:53,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:53,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-20 00:43:53,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:53,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-20 00:43:53,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:53,613 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 00:43:53,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:53,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319782980] [2023-12-20 00:43:53,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319782980] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:43:53,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:43:53,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:43:53,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000714416] [2023-12-20 00:43:53,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:43:53,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:43:53,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:53,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:43:53,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:43:53,615 INFO L87 Difference]: Start difference. First operand 30633 states and 50074 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 00:43:57,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:57,915 INFO L93 Difference]: Finished difference Result 115442 states and 190975 transitions. [2023-12-20 00:43:57,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 00:43:57,916 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 121 [2023-12-20 00:43:57,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:58,209 INFO L225 Difference]: With dead ends: 115442 [2023-12-20 00:43:58,209 INFO L226 Difference]: Without dead ends: 84823 [2023-12-20 00:43:58,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 00:43:58,314 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 1073 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 2765 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 1552 SdHoareTripleChecker+Invalid, 2826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:58,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 1552 Invalid, 2826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2765 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 00:43:58,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84823 states. [2023-12-20 00:44:00,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84823 to 61050. [2023-12-20 00:44:01,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61050 states, 55387 states have (on average 1.5778973405311716) internal successors, (87395), 55645 states have internal predecessors, (87395), 3864 states have call successors, (3864), 1543 states have call predecessors, (3864), 1798 states have return successors, (10679), 4117 states have call predecessors, (10679), 3862 states have call successors, (10679) [2023-12-20 00:44:01,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61050 states to 61050 states and 101938 transitions. [2023-12-20 00:44:01,276 INFO L78 Accepts]: Start accepts. Automaton has 61050 states and 101938 transitions. Word has length 121 [2023-12-20 00:44:01,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:44:01,278 INFO L495 AbstractCegarLoop]: Abstraction has 61050 states and 101938 transitions. [2023-12-20 00:44:01,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 00:44:01,278 INFO L276 IsEmpty]: Start isEmpty. Operand 61050 states and 101938 transitions. [2023-12-20 00:44:01,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-20 00:44:01,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:44:01,314 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] [2023-12-20 00:44:01,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 00:44:01,314 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:44:01,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:44:01,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1718258303, now seen corresponding path program 1 times [2023-12-20 00:44:01,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:44:01,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601410545] [2023-12-20 00:44:01,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:44:01,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:44:01,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:01,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:44:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:01,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 00:44:01,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:01,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-20 00:44:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:01,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-20 00:44:01,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:01,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-20 00:44:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:01,474 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 00:44:01,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:44:01,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601410545] [2023-12-20 00:44:01,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601410545] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:44:01,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:44:01,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:44:01,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112554678] [2023-12-20 00:44:01,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:44:01,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:44:01,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:44:01,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:44:01,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:44:01,476 INFO L87 Difference]: Start difference. First operand 61050 states and 101938 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 00:44:04,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:44:04,481 INFO L93 Difference]: Finished difference Result 138661 states and 237320 transitions. [2023-12-20 00:44:04,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:44:04,482 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 121 [2023-12-20 00:44:04,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:44:04,871 INFO L225 Difference]: With dead ends: 138661 [2023-12-20 00:44:04,871 INFO L226 Difference]: Without dead ends: 77625 [2023-12-20 00:44:04,948 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 00:44:04,949 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 895 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 00:44:04,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 662 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 00:44:04,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77625 states. [2023-12-20 00:44:07,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77625 to 61050. [2023-12-20 00:44:07,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61050 states, 55387 states have (on average 1.5732572625345298) internal successors, (87138), 55645 states have internal predecessors, (87138), 3864 states have call successors, (3864), 1543 states have call predecessors, (3864), 1798 states have return successors, (10679), 4117 states have call predecessors, (10679), 3862 states have call successors, (10679) [2023-12-20 00:44:07,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61050 states to 61050 states and 101681 transitions. [2023-12-20 00:44:07,641 INFO L78 Accepts]: Start accepts. Automaton has 61050 states and 101681 transitions. Word has length 121 [2023-12-20 00:44:07,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:44:07,642 INFO L495 AbstractCegarLoop]: Abstraction has 61050 states and 101681 transitions. [2023-12-20 00:44:07,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 00:44:07,642 INFO L276 IsEmpty]: Start isEmpty. Operand 61050 states and 101681 transitions. [2023-12-20 00:44:07,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-20 00:44:07,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:44:07,671 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] [2023-12-20 00:44:07,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 00:44:07,672 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:44:07,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:44:07,672 INFO L85 PathProgramCache]: Analyzing trace with hash -222323711, now seen corresponding path program 1 times [2023-12-20 00:44:07,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:44:07,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555420714] [2023-12-20 00:44:07,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:44:07,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:44:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:07,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:44:07,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:07,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 00:44:07,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:07,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-20 00:44:07,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:07,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-20 00:44:07,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:07,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-20 00:44:07,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:07,825 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 00:44:07,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:44:07,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555420714] [2023-12-20 00:44:07,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555420714] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:44:07,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:44:07,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:44:07,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373271386] [2023-12-20 00:44:07,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:44:07,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:44:07,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:44:07,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:44:07,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:44:07,828 INFO L87 Difference]: Start difference. First operand 61050 states and 101681 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 00:44:13,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:44:13,580 INFO L93 Difference]: Finished difference Result 219741 states and 371401 transitions. [2023-12-20 00:44:13,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 00:44:13,581 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 121 [2023-12-20 00:44:13,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:44:14,172 INFO L225 Difference]: With dead ends: 219741 [2023-12-20 00:44:14,172 INFO L226 Difference]: Without dead ends: 158705 [2023-12-20 00:44:14,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 00:44:14,271 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 1078 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 1552 SdHoareTripleChecker+Invalid, 2455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 00:44:14,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1102 Valid, 1552 Invalid, 2455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 00:44:14,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158705 states. [2023-12-20 00:44:19,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158705 to 122397. [2023-12-20 00:44:19,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122397 states, 111358 states have (on average 1.5733759586199465) internal successors, (175208), 111872 states have internal predecessors, (175208), 7448 states have call successors, (7448), 3079 states have call predecessors, (7448), 3590 states have return successors, (27641), 7957 states have call predecessors, (27641), 7446 states have call successors, (27641) [2023-12-20 00:44:19,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122397 states to 122397 states and 210297 transitions. [2023-12-20 00:44:19,914 INFO L78 Accepts]: Start accepts. Automaton has 122397 states and 210297 transitions. Word has length 121 [2023-12-20 00:44:19,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:44:19,914 INFO L495 AbstractCegarLoop]: Abstraction has 122397 states and 210297 transitions. [2023-12-20 00:44:19,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 00:44:19,914 INFO L276 IsEmpty]: Start isEmpty. Operand 122397 states and 210297 transitions. [2023-12-20 00:44:19,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-20 00:44:19,972 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:44:19,972 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] [2023-12-20 00:44:19,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 00:44:19,972 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:44:19,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:44:19,973 INFO L85 PathProgramCache]: Analyzing trace with hash -993057277, now seen corresponding path program 1 times [2023-12-20 00:44:19,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:44:19,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896358397] [2023-12-20 00:44:19,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:44:19,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:44:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:20,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:44:20,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:20,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 00:44:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:20,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-20 00:44:20,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:20,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-20 00:44:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:20,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-20 00:44:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:20,133 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 00:44:20,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:44:20,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896358397] [2023-12-20 00:44:20,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896358397] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:44:20,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:44:20,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:44:20,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116796757] [2023-12-20 00:44:20,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:44:20,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:44:20,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:44:20,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:44:20,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:44:20,135 INFO L87 Difference]: Start difference. First operand 122397 states and 210297 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 00:44:25,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:44:25,570 INFO L93 Difference]: Finished difference Result 275173 states and 488139 transitions. [2023-12-20 00:44:25,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:44:25,570 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 121 [2023-12-20 00:44:25,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:44:26,265 INFO L225 Difference]: With dead ends: 275173 [2023-12-20 00:44:26,265 INFO L226 Difference]: Without dead ends: 152790 [2023-12-20 00:44:26,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:44:26,432 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 889 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 00:44:26,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 662 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 00:44:26,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152790 states. [2023-12-20 00:44:31,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152790 to 122397. [2023-12-20 00:44:31,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122397 states, 111358 states have (on average 1.5687691948490454) internal successors, (174695), 111872 states have internal predecessors, (174695), 7448 states have call successors, (7448), 3079 states have call predecessors, (7448), 3590 states have return successors, (27641), 7957 states have call predecessors, (27641), 7446 states have call successors, (27641) [2023-12-20 00:44:32,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122397 states to 122397 states and 209784 transitions. [2023-12-20 00:44:32,208 INFO L78 Accepts]: Start accepts. Automaton has 122397 states and 209784 transitions. Word has length 121 [2023-12-20 00:44:32,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:44:32,208 INFO L495 AbstractCegarLoop]: Abstraction has 122397 states and 209784 transitions. [2023-12-20 00:44:32,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 00:44:32,208 INFO L276 IsEmpty]: Start isEmpty. Operand 122397 states and 209784 transitions. [2023-12-20 00:44:32,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-20 00:44:32,256 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:44:32,257 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] [2023-12-20 00:44:32,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 00:44:32,257 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:44:32,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:44:32,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1987750975, now seen corresponding path program 1 times [2023-12-20 00:44:32,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:44:32,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47311069] [2023-12-20 00:44:32,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:44:32,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:44:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:32,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:44:32,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:32,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 00:44:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:32,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-20 00:44:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:32,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-20 00:44:32,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:32,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-20 00:44:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:32,400 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 00:44:32,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:44:32,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47311069] [2023-12-20 00:44:32,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47311069] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:44:32,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:44:32,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:44:32,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465979492] [2023-12-20 00:44:32,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:44:32,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:44:32,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:44:32,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:44:32,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:44:32,402 INFO L87 Difference]: Start difference. First operand 122397 states and 209784 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 00:44:40,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:44:40,738 INFO L93 Difference]: Finished difference Result 363033 states and 615480 transitions. [2023-12-20 00:44:40,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-20 00:44:40,739 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 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 121 [2023-12-20 00:44:40,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:44:41,734 INFO L225 Difference]: With dead ends: 363033 [2023-12-20 00:44:41,734 INFO L226 Difference]: Without dead ends: 240651 [2023-12-20 00:44:42,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2023-12-20 00:44:42,074 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 1118 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 1728 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1141 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 1824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 00:44:42,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1141 Valid, 1042 Invalid, 1824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1728 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 00:44:42,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240651 states.