/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.09.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 00:43:51,940 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 00:43:51,977 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 00:43:51,980 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 00:43:51,980 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 00:43:51,995 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 00:43:51,995 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 00:43:51,995 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 00:43:51,996 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 00:43:51,999 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 00:43:51,999 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 00:43:51,999 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 00:43:51,999 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 00:43:52,000 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 00:43:52,000 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 00:43:52,001 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 00:43:52,001 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 00:43:52,001 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 00:43:52,001 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 00:43:52,001 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 00:43:52,001 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 00:43:52,002 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 00:43:52,002 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 00:43:52,002 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 00:43:52,002 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 00:43:52,002 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 00:43:52,002 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 00:43:52,003 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 00:43:52,003 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 00:43:52,003 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 00:43:52,004 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 00:43:52,004 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 00:43:52,004 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 00:43:52,004 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 00:43:52,004 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 00:43:52,004 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 00:43:52,005 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 00:43:52,005 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 00:43:52,005 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 00:43:52,005 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 00:43:52,005 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 00:43:52,006 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 00:43:52,006 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 00:43:52,006 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 00:43:52,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 00:43:52,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 00:43:52,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 00:43:52,207 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 00:43:52,207 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 00:43:52,208 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.09.cil-2.c [2023-12-20 00:43:53,238 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 00:43:53,427 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 00:43:53,427 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.09.cil-2.c [2023-12-20 00:43:53,437 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b68b9cf65/82ff89c9c570491d8421f4c227b01def/FLAG877a4b0ab [2023-12-20 00:43:53,446 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b68b9cf65/82ff89c9c570491d8421f4c227b01def [2023-12-20 00:43:53,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 00:43:53,450 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 00:43:53,452 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 00:43:53,456 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 00:43:53,459 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 00:43:53,459 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:43:53" (1/1) ... [2023-12-20 00:43:53,460 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79f9e9f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:53, skipping insertion in model container [2023-12-20 00:43:53,460 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:43:53" (1/1) ... [2023-12-20 00:43:53,506 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 00:43:53,605 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.09.cil-2.c[671,684] [2023-12-20 00:43:53,710 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 00:43:53,722 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 00:43:53,729 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.09.cil-2.c[671,684] [2023-12-20 00:43:53,769 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 00:43:53,785 INFO L206 MainTranslator]: Completed translation [2023-12-20 00:43:53,786 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:53 WrapperNode [2023-12-20 00:43:53,786 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 00:43:53,792 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 00:43:53,792 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 00:43:53,792 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 00:43:53,796 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:53" (1/1) ... [2023-12-20 00:43:53,819 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:53" (1/1) ... [2023-12-20 00:43:53,847 INFO L138 Inliner]: procedures = 46, calls = 59, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 705 [2023-12-20 00:43:53,847 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 00:43:53,848 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 00:43:53,848 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 00:43:53,848 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 00:43:53,855 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:53" (1/1) ... [2023-12-20 00:43:53,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:53" (1/1) ... [2023-12-20 00:43:53,858 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:53" (1/1) ... [2023-12-20 00:43:53,870 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 00:43:53,870 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:53" (1/1) ... [2023-12-20 00:43:53,870 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:53" (1/1) ... [2023-12-20 00:43:53,877 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:53" (1/1) ... [2023-12-20 00:43:53,884 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:53" (1/1) ... [2023-12-20 00:43:53,885 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:53" (1/1) ... [2023-12-20 00:43:53,887 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:53" (1/1) ... [2023-12-20 00:43:53,890 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 00:43:53,890 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 00:43:53,890 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 00:43:53,890 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 00:43:53,891 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:53" (1/1) ... [2023-12-20 00:43:53,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 00:43:53,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:43:53,927 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 00:43:53,931 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 00:43:53,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 00:43:53,948 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-20 00:43:53,948 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-20 00:43:53,948 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-20 00:43:53,949 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-20 00:43:53,949 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-20 00:43:53,949 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-20 00:43:53,949 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-20 00:43:53,949 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-20 00:43:53,949 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-20 00:43:53,949 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-20 00:43:53,949 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-20 00:43:53,949 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-20 00:43:53,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 00:43:53,949 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-20 00:43:53,950 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-20 00:43:53,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 00:43:53,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 00:43:54,019 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 00:43:54,021 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 00:43:54,510 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 00:43:54,578 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 00:43:54,578 INFO L309 CfgBuilder]: Removed 12 assume(true) statements. [2023-12-20 00:43:54,578 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:43:54 BoogieIcfgContainer [2023-12-20 00:43:54,578 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 00:43:54,580 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 00:43:54,580 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 00:43:54,582 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 00:43:54,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 12:43:53" (1/3) ... [2023-12-20 00:43:54,583 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4612f8f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:43:54, skipping insertion in model container [2023-12-20 00:43:54,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:53" (2/3) ... [2023-12-20 00:43:54,583 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4612f8f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:43:54, skipping insertion in model container [2023-12-20 00:43:54,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:43:54" (3/3) ... [2023-12-20 00:43:54,584 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.09.cil-2.c [2023-12-20 00:43:54,596 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 00:43:54,596 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 00:43:54,632 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 00:43:54,636 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;@630b7838, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 00:43:54,636 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 00:43:54,640 INFO L276 IsEmpty]: Start isEmpty. Operand has 287 states, 253 states have (on average 1.7312252964426877) internal successors, (438), 257 states have internal predecessors, (438), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-20 00:43:54,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-20 00:43:54,650 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:54,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:43:54,651 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:54,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:54,654 INFO L85 PathProgramCache]: Analyzing trace with hash -2115979141, now seen corresponding path program 1 times [2023-12-20 00:43:54,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:54,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018280896] [2023-12-20 00:43:54,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:54,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:54,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:43:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:54,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 00:43:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:55,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-20 00:43:55,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:55,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-20 00:43:55,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:55,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 00:43:55,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:55,096 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 00:43:55,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:55,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018280896] [2023-12-20 00:43:55,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018280896] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:43:55,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:43:55,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 00:43:55,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288631018] [2023-12-20 00:43:55,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:43:55,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 00:43:55,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:55,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 00:43:55,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:43:55,125 INFO L87 Difference]: Start difference. First operand has 287 states, 253 states have (on average 1.7312252964426877) internal successors, (438), 257 states have internal predecessors, (438), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 3 states have internal predecessors, (120), 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 00:43:56,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:56,295 INFO L93 Difference]: Finished difference Result 663 states and 1137 transitions. [2023-12-20 00:43:56,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 00:43:56,297 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 3 states have internal predecessors, (120), 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 131 [2023-12-20 00:43:56,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:56,312 INFO L225 Difference]: With dead ends: 663 [2023-12-20 00:43:56,312 INFO L226 Difference]: Without dead ends: 384 [2023-12-20 00:43:56,319 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 00:43:56,323 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 774 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:56,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 531 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 00:43:56,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2023-12-20 00:43:56,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 284. [2023-12-20 00:43:56,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 252 states have (on average 1.626984126984127) internal successors, (410), 254 states have internal predecessors, (410), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-20 00:43:56,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 458 transitions. [2023-12-20 00:43:56,396 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 458 transitions. Word has length 131 [2023-12-20 00:43:56,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:43:56,397 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 458 transitions. [2023-12-20 00:43:56,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 3 states have internal predecessors, (120), 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 00:43:56,398 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 458 transitions. [2023-12-20 00:43:56,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-20 00:43:56,405 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:56,405 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:43:56,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 00:43:56,406 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:56,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:56,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1023343939, now seen corresponding path program 1 times [2023-12-20 00:43:56,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:56,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827576033] [2023-12-20 00:43:56,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:56,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:56,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:43:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:56,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 00:43:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:56,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-20 00:43:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:56,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-20 00:43:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:56,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 00:43:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:56,645 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 00:43:56,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:56,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827576033] [2023-12-20 00:43:56,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827576033] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:43:56,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:43:56,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 00:43:56,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971794571] [2023-12-20 00:43:56,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:43:56,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 00:43:56,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:56,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 00:43:56,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 00:43:56,648 INFO L87 Difference]: Start difference. First operand 284 states and 458 transitions. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 4 states have internal predecessors, (120), 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 00:43:58,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:58,495 INFO L93 Difference]: Finished difference Result 1035 states and 1706 transitions. [2023-12-20 00:43:58,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 00:43:58,499 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 4 states have internal predecessors, (120), 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 131 [2023-12-20 00:43:58,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:58,502 INFO L225 Difference]: With dead ends: 1035 [2023-12-20 00:43:58,502 INFO L226 Difference]: Without dead ends: 766 [2023-12-20 00:43:58,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:43:58,504 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 1166 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 1830 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 1934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:58,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1182 Valid, 1008 Invalid, 1934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1830 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 00:43:58,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2023-12-20 00:43:58,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 565. [2023-12-20 00:43:58,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 508 states have (on average 1.6358267716535433) internal successors, (831), 511 states have internal predecessors, (831), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2023-12-20 00:43:58,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 918 transitions. [2023-12-20 00:43:58,529 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 918 transitions. Word has length 131 [2023-12-20 00:43:58,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:43:58,529 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 918 transitions. [2023-12-20 00:43:58,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 4 states have internal predecessors, (120), 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 00:43:58,530 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 918 transitions. [2023-12-20 00:43:58,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-20 00:43:58,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:58,531 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:43:58,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 00:43:58,531 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:58,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:58,531 INFO L85 PathProgramCache]: Analyzing trace with hash -50816967, now seen corresponding path program 1 times [2023-12-20 00:43:58,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:58,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060272685] [2023-12-20 00:43:58,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:58,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:58,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:58,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:43:58,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:58,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 00:43:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:58,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-20 00:43:58,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:58,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-20 00:43:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:58,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 00:43:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:58,711 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 00:43:58,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:58,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060272685] [2023-12-20 00:43:58,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060272685] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:43:58,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:43:58,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:43:58,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369168284] [2023-12-20 00:43:58,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:43:58,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:43:58,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:58,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:43:58,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:43:58,713 INFO L87 Difference]: Start difference. First operand 565 states and 918 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 00:44:01,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:44:01,221 INFO L93 Difference]: Finished difference Result 1710 states and 2820 transitions. [2023-12-20 00:44:01,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 00:44:01,221 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 131 [2023-12-20 00:44:01,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:44:01,226 INFO L225 Difference]: With dead ends: 1710 [2023-12-20 00:44:01,226 INFO L226 Difference]: Without dead ends: 1160 [2023-12-20 00:44:01,227 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 00:44:01,228 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 1187 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 2927 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1203 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 2986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 00:44:01,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1203 Valid, 1696 Invalid, 2986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2927 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 00:44:01,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2023-12-20 00:44:01,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 825. [2023-12-20 00:44:01,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 743 states have (on average 1.6285329744279946) internal successors, (1210), 747 states have internal predecessors, (1210), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2023-12-20 00:44:01,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1335 transitions. [2023-12-20 00:44:01,270 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1335 transitions. Word has length 131 [2023-12-20 00:44:01,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:44:01,271 INFO L495 AbstractCegarLoop]: Abstraction has 825 states and 1335 transitions. [2023-12-20 00:44:01,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 00:44:01,271 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1335 transitions. [2023-12-20 00:44:01,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-20 00:44:01,273 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:44:01,273 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:44:01,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 00:44:01,286 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:44:01,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:44:01,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1676327995, now seen corresponding path program 1 times [2023-12-20 00:44:01,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:44:01,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744542806] [2023-12-20 00:44:01,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:44:01,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:44:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:01,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:44:01,363 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 16 [2023-12-20 00:44:01,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:01,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-20 00:44:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:01,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-20 00:44:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:01,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 00:44:01,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:01,477 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 00:44:01,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:44:01,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744542806] [2023-12-20 00:44:01,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744542806] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:44:01,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:44:01,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:44:01,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284362807] [2023-12-20 00:44:01,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:44:01,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:44:01,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:44:01,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:44:01,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:44:01,479 INFO L87 Difference]: Start difference. First operand 825 states and 1335 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 00:44:03,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:44:03,814 INFO L93 Difference]: Finished difference Result 2699 states and 4443 transitions. [2023-12-20 00:44:03,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 00:44:03,815 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 131 [2023-12-20 00:44:03,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:44:03,823 INFO L225 Difference]: With dead ends: 2699 [2023-12-20 00:44:03,823 INFO L226 Difference]: Without dead ends: 1889 [2023-12-20 00:44:03,825 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 00:44:03,826 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 1185 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 2923 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1201 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 2984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 00:44:03,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1201 Valid, 1694 Invalid, 2984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2923 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 00:44:03,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2023-12-20 00:44:03,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1346. [2023-12-20 00:44:03,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1214 states have (on average 1.6219110378912684) internal successors, (1969), 1220 states have internal predecessors, (1969), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2023-12-20 00:44:03,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 2174 transitions. [2023-12-20 00:44:03,874 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 2174 transitions. Word has length 131 [2023-12-20 00:44:03,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:44:03,875 INFO L495 AbstractCegarLoop]: Abstraction has 1346 states and 2174 transitions. [2023-12-20 00:44:03,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 00:44:03,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 2174 transitions. [2023-12-20 00:44:03,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-20 00:44:03,876 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:44:03,876 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:44:03,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 00:44:03,877 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:44:03,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:44:03,877 INFO L85 PathProgramCache]: Analyzing trace with hash -2147282951, now seen corresponding path program 1 times [2023-12-20 00:44:03,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:44:03,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830455839] [2023-12-20 00:44:03,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:44:03,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:44:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:03,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:44:03,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:03,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 00:44:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:04,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-20 00:44:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:04,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-20 00:44:04,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:04,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 00:44:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:04,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:44:04,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:44:04,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830455839] [2023-12-20 00:44:04,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830455839] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:44:04,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:44:04,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:44:04,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390858180] [2023-12-20 00:44:04,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:44:04,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:44:04,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:44:04,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:44:04,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:44:04,037 INFO L87 Difference]: Start difference. First operand 1346 states and 2174 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 00:44:05,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:44:05,078 INFO L93 Difference]: Finished difference Result 3208 states and 5273 transitions. [2023-12-20 00:44:05,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:44:05,079 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 131 [2023-12-20 00:44:05,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:44:05,086 INFO L225 Difference]: With dead ends: 3208 [2023-12-20 00:44:05,086 INFO L226 Difference]: Without dead ends: 1877 [2023-12-20 00:44:05,089 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 00:44:05,089 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 978 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 00:44:05,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 723 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 00:44:05,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1877 states. [2023-12-20 00:44:05,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1877 to 1346. [2023-12-20 00:44:05,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1214 states have (on average 1.6177924217462933) internal successors, (1964), 1220 states have internal predecessors, (1964), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2023-12-20 00:44:05,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 2169 transitions. [2023-12-20 00:44:05,133 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 2169 transitions. Word has length 131 [2023-12-20 00:44:05,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:44:05,133 INFO L495 AbstractCegarLoop]: Abstraction has 1346 states and 2169 transitions. [2023-12-20 00:44:05,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 00:44:05,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 2169 transitions. [2023-12-20 00:44:05,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-20 00:44:05,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:44:05,134 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:44:05,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 00:44:05,135 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:44:05,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:44:05,135 INFO L85 PathProgramCache]: Analyzing trace with hash 500321403, now seen corresponding path program 1 times [2023-12-20 00:44:05,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:44:05,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438325321] [2023-12-20 00:44:05,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:44:05,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:44:05,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:05,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:44:05,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:05,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 00:44:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:05,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-20 00:44:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:05,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-20 00:44:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:05,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 00:44:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:05,282 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 00:44:05,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:44:05,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438325321] [2023-12-20 00:44:05,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438325321] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:44:05,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:44:05,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:44:05,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446650141] [2023-12-20 00:44:05,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:44:05,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:44:05,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:44:05,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:44:05,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:44:05,284 INFO L87 Difference]: Start difference. First operand 1346 states and 2169 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 00:44:06,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:44:06,264 INFO L93 Difference]: Finished difference Result 3202 states and 5247 transitions. [2023-12-20 00:44:06,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:44:06,264 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 131 [2023-12-20 00:44:06,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:44:06,270 INFO L225 Difference]: With dead ends: 3202 [2023-12-20 00:44:06,270 INFO L226 Difference]: Without dead ends: 1871 [2023-12-20 00:44:06,273 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 00:44:06,273 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 982 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 1320 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 00:44:06,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [999 Valid, 723 Invalid, 1408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1320 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 00:44:06,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1871 states. [2023-12-20 00:44:06,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1871 to 1346. [2023-12-20 00:44:06,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1214 states have (on average 1.613673805601318) internal successors, (1959), 1220 states have internal predecessors, (1959), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2023-12-20 00:44:06,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 2164 transitions. [2023-12-20 00:44:06,339 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 2164 transitions. Word has length 131 [2023-12-20 00:44:06,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:44:06,340 INFO L495 AbstractCegarLoop]: Abstraction has 1346 states and 2164 transitions. [2023-12-20 00:44:06,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 00:44:06,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 2164 transitions. [2023-12-20 00:44:06,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-20 00:44:06,342 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:44:06,342 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:44:06,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 00:44:06,342 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:44:06,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:44:06,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1631029319, now seen corresponding path program 1 times [2023-12-20 00:44:06,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:44:06,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365592958] [2023-12-20 00:44:06,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:44:06,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:44:06,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:06,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:44:06,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:06,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 00:44:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:06,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-20 00:44:06,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:06,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-20 00:44:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:06,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 00:44:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:06,495 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 00:44:06,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:44:06,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365592958] [2023-12-20 00:44:06,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365592958] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:44:06,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:44:06,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:44:06,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25718763] [2023-12-20 00:44:06,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:44:06,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:44:06,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:44:06,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:44:06,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:44:06,497 INFO L87 Difference]: Start difference. First operand 1346 states and 2164 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 00:44:08,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:44:08,569 INFO L93 Difference]: Finished difference Result 4577 states and 7462 transitions. [2023-12-20 00:44:08,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 00:44:08,570 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 131 [2023-12-20 00:44:08,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:44:08,583 INFO L225 Difference]: With dead ends: 4577 [2023-12-20 00:44:08,583 INFO L226 Difference]: Without dead ends: 3246 [2023-12-20 00:44:08,587 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 00:44:08,590 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 1256 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 2364 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1272 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 2459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 00:44:08,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1272 Valid, 1100 Invalid, 2459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2364 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 00:44:08,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3246 states. [2023-12-20 00:44:08,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3246 to 2402. [2023-12-20 00:44:08,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2402 states, 2170 states have (on average 1.6078341013824884) internal successors, (3489), 2180 states have internal predecessors, (3489), 169 states have call successors, (169), 55 states have call predecessors, (169), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2023-12-20 00:44:08,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2402 states to 2402 states and 3860 transitions. [2023-12-20 00:44:08,709 INFO L78 Accepts]: Start accepts. Automaton has 2402 states and 3860 transitions. Word has length 131 [2023-12-20 00:44:08,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:44:08,710 INFO L495 AbstractCegarLoop]: Abstraction has 2402 states and 3860 transitions. [2023-12-20 00:44:08,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 00:44:08,710 INFO L276 IsEmpty]: Start isEmpty. Operand 2402 states and 3860 transitions. [2023-12-20 00:44:08,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-20 00:44:08,712 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:44:08,712 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:44:08,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 00:44:08,712 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:44:08,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:44:08,713 INFO L85 PathProgramCache]: Analyzing trace with hash 690772599, now seen corresponding path program 1 times [2023-12-20 00:44:08,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:44:08,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347832] [2023-12-20 00:44:08,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:44:08,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:44:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:08,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:44:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:08,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 00:44:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:08,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-20 00:44:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:08,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-20 00:44:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:08,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 00:44:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:08,864 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 00:44:08,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:44:08,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347832] [2023-12-20 00:44:08,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347832] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:44:08,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:44:08,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:44:08,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163084355] [2023-12-20 00:44:08,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:44:08,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:44:08,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:44:08,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:44:08,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:44:08,866 INFO L87 Difference]: Start difference. First operand 2402 states and 3860 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 00:44:10,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:44:10,004 INFO L93 Difference]: Finished difference Result 5644 states and 9207 transitions. [2023-12-20 00:44:10,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:44:10,004 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 131 [2023-12-20 00:44:10,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:44:10,015 INFO L225 Difference]: With dead ends: 5644 [2023-12-20 00:44:10,015 INFO L226 Difference]: Without dead ends: 3257 [2023-12-20 00:44:10,019 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 00:44:10,020 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 859 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 1431 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 00:44:10,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 862 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1431 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 00:44:10,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3257 states. [2023-12-20 00:44:10,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3257 to 2402. [2023-12-20 00:44:10,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2402 states, 2170 states have (on average 1.6036866359447004) internal successors, (3480), 2180 states have internal predecessors, (3480), 169 states have call successors, (169), 55 states have call predecessors, (169), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2023-12-20 00:44:10,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2402 states to 2402 states and 3851 transitions. [2023-12-20 00:44:10,094 INFO L78 Accepts]: Start accepts. Automaton has 2402 states and 3851 transitions. Word has length 131 [2023-12-20 00:44:10,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:44:10,094 INFO L495 AbstractCegarLoop]: Abstraction has 2402 states and 3851 transitions. [2023-12-20 00:44:10,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 00:44:10,094 INFO L276 IsEmpty]: Start isEmpty. Operand 2402 states and 3851 transitions. [2023-12-20 00:44:10,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-20 00:44:10,096 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:44:10,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:44:10,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 00:44:10,096 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:44:10,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:44:10,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1451087879, now seen corresponding path program 1 times [2023-12-20 00:44:10,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:44:10,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766053454] [2023-12-20 00:44:10,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:44:10,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:44:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:10,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:44:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:10,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 00:44:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:10,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-20 00:44:10,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:10,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-20 00:44:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:10,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 00:44:10,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:10,250 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 00:44:10,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:44:10,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766053454] [2023-12-20 00:44:10,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766053454] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:44:10,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:44:10,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:44:10,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107229784] [2023-12-20 00:44:10,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:44:10,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:44:10,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:44:10,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:44:10,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:44:10,252 INFO L87 Difference]: Start difference. First operand 2402 states and 3851 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 00:44:12,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:44:12,547 INFO L93 Difference]: Finished difference Result 8361 states and 13572 transitions. [2023-12-20 00:44:12,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 00:44:12,548 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 131 [2023-12-20 00:44:12,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:44:12,570 INFO L225 Difference]: With dead ends: 8361 [2023-12-20 00:44:12,571 INFO L226 Difference]: Without dead ends: 5974 [2023-12-20 00:44:12,577 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 00:44:12,577 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 1163 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 2804 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 2865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 00:44:12,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1179 Valid, 1694 Invalid, 2865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2804 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 00:44:12,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5974 states. [2023-12-20 00:44:12,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5974 to 4524. [2023-12-20 00:44:12,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4524 states, 4092 states have (on average 1.598240469208211) internal successors, (6540), 4110 states have internal predecessors, (6540), 313 states have call successors, (313), 103 states have call predecessors, (313), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2023-12-20 00:44:12,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4524 states to 4524 states and 7261 transitions. [2023-12-20 00:44:12,737 INFO L78 Accepts]: Start accepts. Automaton has 4524 states and 7261 transitions. Word has length 131 [2023-12-20 00:44:12,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:44:12,737 INFO L495 AbstractCegarLoop]: Abstraction has 4524 states and 7261 transitions. [2023-12-20 00:44:12,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 00:44:12,738 INFO L276 IsEmpty]: Start isEmpty. Operand 4524 states and 7261 transitions. [2023-12-20 00:44:12,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-20 00:44:12,741 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:44:12,741 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:44:12,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 00:44:12,741 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:44:12,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:44:12,742 INFO L85 PathProgramCache]: Analyzing trace with hash -2074369481, now seen corresponding path program 1 times [2023-12-20 00:44:12,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:44:12,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449183482] [2023-12-20 00:44:12,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:44:12,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:44:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:12,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:44:12,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:12,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 00:44:12,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:12,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-20 00:44:12,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:12,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-20 00:44:12,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:12,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 00:44:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:12,896 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 00:44:12,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:44:12,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449183482] [2023-12-20 00:44:12,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449183482] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:44:12,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:44:12,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:44:12,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168909754] [2023-12-20 00:44:12,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:44:12,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:44:12,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:44:12,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:44:12,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:44:12,898 INFO L87 Difference]: Start difference. First operand 4524 states and 7261 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 00:44:15,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:44:15,267 INFO L93 Difference]: Finished difference Result 15945 states and 25924 transitions. [2023-12-20 00:44:15,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 00:44:15,268 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 131 [2023-12-20 00:44:15,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:44:15,303 INFO L225 Difference]: With dead ends: 15945 [2023-12-20 00:44:15,304 INFO L226 Difference]: Without dead ends: 11436 [2023-12-20 00:44:15,315 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 00:44:15,316 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 1162 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 2791 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 2852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 00:44:15,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1178 Valid, 1694 Invalid, 2852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2791 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 00:44:15,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11436 states. [2023-12-20 00:44:15,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11436 to 8781. [2023-12-20 00:44:15,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8781 states, 7949 states have (on average 1.5949175996980753) internal successors, (12678), 7983 states have internal predecessors, (12678), 601 states have call successors, (601), 199 states have call predecessors, (601), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2023-12-20 00:44:15,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8781 states to 8781 states and 14153 transitions. [2023-12-20 00:44:15,645 INFO L78 Accepts]: Start accepts. Automaton has 8781 states and 14153 transitions. Word has length 131 [2023-12-20 00:44:15,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:44:15,645 INFO L495 AbstractCegarLoop]: Abstraction has 8781 states and 14153 transitions. [2023-12-20 00:44:15,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 00:44:15,646 INFO L276 IsEmpty]: Start isEmpty. Operand 8781 states and 14153 transitions. [2023-12-20 00:44:15,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-20 00:44:15,652 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:44:15,652 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:44:15,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 00:44:15,652 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:44:15,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:44:15,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1955928007, now seen corresponding path program 1 times [2023-12-20 00:44:15,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:44:15,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150136226] [2023-12-20 00:44:15,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:44:15,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:44:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:15,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:44:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:15,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 00:44:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:15,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-20 00:44:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:15,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-20 00:44:15,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:15,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 00:44:15,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:15,799 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 00:44:15,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:44:15,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150136226] [2023-12-20 00:44:15,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150136226] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:44:15,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:44:15,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:44:15,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368358626] [2023-12-20 00:44:15,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:44:15,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:44:15,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:44:15,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:44:15,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:44:15,801 INFO L87 Difference]: Start difference. First operand 8781 states and 14153 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 00:44:18,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:44:18,585 INFO L93 Difference]: Finished difference Result 34824 states and 56804 transitions. [2023-12-20 00:44:18,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 00:44:18,585 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 131 [2023-12-20 00:44:18,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:44:18,661 INFO L225 Difference]: With dead ends: 34824 [2023-12-20 00:44:18,662 INFO L226 Difference]: Without dead ends: 26058 [2023-12-20 00:44:18,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 00:44:18,685 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 1490 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 2768 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 2832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 00:44:18,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 1687 Invalid, 2832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 2768 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 00:44:18,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26058 states. [2023-12-20 00:44:19,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26058 to 17262. [2023-12-20 00:44:19,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17262 states, 15662 states have (on average 1.5941769888903077) internal successors, (24968), 15728 states have internal predecessors, (24968), 1145 states have call successors, (1145), 391 states have call predecessors, (1145), 454 states have return successors, (1936), 1206 states have call predecessors, (1936), 1143 states have call successors, (1936) [2023-12-20 00:44:19,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17262 states to 17262 states and 28049 transitions. [2023-12-20 00:44:19,424 INFO L78 Accepts]: Start accepts. Automaton has 17262 states and 28049 transitions. Word has length 131 [2023-12-20 00:44:19,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:44:19,425 INFO L495 AbstractCegarLoop]: Abstraction has 17262 states and 28049 transitions. [2023-12-20 00:44:19,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 00:44:19,425 INFO L276 IsEmpty]: Start isEmpty. Operand 17262 states and 28049 transitions. [2023-12-20 00:44:19,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-20 00:44:19,435 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:44:19,435 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:44:19,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 00:44:19,435 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:44:19,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:44:19,436 INFO L85 PathProgramCache]: Analyzing trace with hash -566633993, now seen corresponding path program 1 times [2023-12-20 00:44:19,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:44:19,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668587759] [2023-12-20 00:44:19,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:44:19,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:44:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:19,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:44:19,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:19,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 00:44:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:19,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-20 00:44:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:19,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-20 00:44:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:19,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 00:44:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:19,575 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 00:44:19,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:44:19,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668587759] [2023-12-20 00:44:19,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668587759] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:44:19,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:44:19,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:44:19,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786043926] [2023-12-20 00:44:19,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:44:19,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:44:19,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:44:19,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:44:19,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:44:19,577 INFO L87 Difference]: Start difference. First operand 17262 states and 28049 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 00:44:23,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:44:23,047 INFO L93 Difference]: Finished difference Result 67975 states and 111738 transitions. [2023-12-20 00:44:23,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 00:44:23,047 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 131 [2023-12-20 00:44:23,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:44:23,191 INFO L225 Difference]: With dead ends: 67975 [2023-12-20 00:44:23,191 INFO L226 Difference]: Without dead ends: 50728 [2023-12-20 00:44:23,223 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 00:44:23,224 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 1233 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 3263 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1248 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 3326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 00:44:23,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1248 Valid, 1683 Invalid, 3326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3263 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 00:44:23,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50728 states. [2023-12-20 00:44:24,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50728 to 33583. [2023-12-20 00:44:24,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33583 states, 30479 states have (on average 1.589881557793891) internal successors, (48458), 30609 states have internal predecessors, (48458), 2201 states have call successors, (2201), 775 states have call predecessors, (2201), 902 states have return successors, (4514), 2326 states have call predecessors, (4514), 2199 states have call successors, (4514) [2023-12-20 00:44:24,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33583 states to 33583 states and 55173 transitions. [2023-12-20 00:44:24,734 INFO L78 Accepts]: Start accepts. Automaton has 33583 states and 55173 transitions. Word has length 131 [2023-12-20 00:44:24,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:44:24,734 INFO L495 AbstractCegarLoop]: Abstraction has 33583 states and 55173 transitions. [2023-12-20 00:44:24,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 00:44:24,735 INFO L276 IsEmpty]: Start isEmpty. Operand 33583 states and 55173 transitions. [2023-12-20 00:44:24,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-20 00:44:24,755 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:44:24,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:44:24,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 00:44:24,756 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:44:24,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:44:24,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1694939257, now seen corresponding path program 1 times [2023-12-20 00:44:24,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:44:24,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371354715] [2023-12-20 00:44:24,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:44:24,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:44:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:24,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:44:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:24,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 00:44:24,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:24,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-20 00:44:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:24,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-20 00:44:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:24,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 00:44:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:24,900 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 00:44:24,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:44:24,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371354715] [2023-12-20 00:44:24,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371354715] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:44:24,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:44:24,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:44:24,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132815634] [2023-12-20 00:44:24,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:44:24,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:44:24,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:44:24,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:44:24,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:44:24,902 INFO L87 Difference]: Start difference. First operand 33583 states and 55173 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 00:44:27,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:44:27,100 INFO L93 Difference]: Finished difference Result 77284 states and 129532 transitions. [2023-12-20 00:44:27,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:44:27,101 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 131 [2023-12-20 00:44:27,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:44:27,223 INFO L225 Difference]: With dead ends: 77284 [2023-12-20 00:44:27,223 INFO L226 Difference]: Without dead ends: 43716 [2023-12-20 00:44:27,276 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 00:44:27,276 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 864 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 1371 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 1436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 00:44:27,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 861 Invalid, 1436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1371 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 00:44:27,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43716 states. [2023-12-20 00:44:28,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43716 to 33583. [2023-12-20 00:44:28,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33583 states, 30479 states have (on average 1.585649135470324) internal successors, (48329), 30609 states have internal predecessors, (48329), 2201 states have call successors, (2201), 775 states have call predecessors, (2201), 902 states have return successors, (4514), 2326 states have call predecessors, (4514), 2199 states have call successors, (4514) [2023-12-20 00:44:28,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33583 states to 33583 states and 55044 transitions. [2023-12-20 00:44:28,625 INFO L78 Accepts]: Start accepts. Automaton has 33583 states and 55044 transitions. Word has length 131 [2023-12-20 00:44:28,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:44:28,625 INFO L495 AbstractCegarLoop]: Abstraction has 33583 states and 55044 transitions. [2023-12-20 00:44:28,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 00:44:28,625 INFO L276 IsEmpty]: Start isEmpty. Operand 33583 states and 55044 transitions. [2023-12-20 00:44:28,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-20 00:44:28,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:44:28,642 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:44:28,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 00:44:28,643 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:44:28,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:44:28,643 INFO L85 PathProgramCache]: Analyzing trace with hash -171769417, now seen corresponding path program 1 times [2023-12-20 00:44:28,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:44:28,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107957983] [2023-12-20 00:44:28,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:44:28,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:44:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:28,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:44:28,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:28,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 00:44:28,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:28,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-20 00:44:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:28,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-20 00:44:28,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:28,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 00:44:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:28,781 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 00:44:28,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:44:28,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107957983] [2023-12-20 00:44:28,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107957983] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:44:28,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:44:28,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:44:28,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348912736] [2023-12-20 00:44:28,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:44:28,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:44:28,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:44:28,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:44:28,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:44:28,782 INFO L87 Difference]: Start difference. First operand 33583 states and 55044 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 00:44:33,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:44:33,145 INFO L93 Difference]: Finished difference Result 128130 states and 212660 transitions. [2023-12-20 00:44:33,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 00:44:33,146 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 131 [2023-12-20 00:44:33,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:44:33,558 INFO L225 Difference]: With dead ends: 128130 [2023-12-20 00:44:33,558 INFO L226 Difference]: Without dead ends: 94562 [2023-12-20 00:44:33,621 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 00:44:33,621 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 1270 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 2650 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1285 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 2745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 00:44:33,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1285 Valid, 1100 Invalid, 2745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2650 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 00:44:33,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94562 states. [2023-12-20 00:44:36,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94562 to 67122. [2023-12-20 00:44:36,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67122 states, 61074 states have (on average 1.585732062743557) internal successors, (96847), 61332 states have internal predecessors, (96847), 4249 states have call successors, (4249), 1543 states have call predecessors, (4249), 1798 states have return successors, (11064), 4502 states have call predecessors, (11064), 4247 states have call successors, (11064) [2023-12-20 00:44:36,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67122 states to 67122 states and 112160 transitions. [2023-12-20 00:44:36,485 INFO L78 Accepts]: Start accepts. Automaton has 67122 states and 112160 transitions. Word has length 131 [2023-12-20 00:44:36,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:44:36,485 INFO L495 AbstractCegarLoop]: Abstraction has 67122 states and 112160 transitions. [2023-12-20 00:44:36,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 00:44:36,485 INFO L276 IsEmpty]: Start isEmpty. Operand 67122 states and 112160 transitions. [2023-12-20 00:44:36,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-20 00:44:36,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:44:36,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:44:36,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 00:44:36,521 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:44:36,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:44:36,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1725727349, now seen corresponding path program 1 times [2023-12-20 00:44:36,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:44:36,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275032547] [2023-12-20 00:44:36,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:44:36,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:44:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:36,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:44:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:36,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 00:44:36,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:36,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-20 00:44:36,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:36,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-20 00:44:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:36,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 00:44:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:36,660 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 00:44:36,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:44:36,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275032547] [2023-12-20 00:44:36,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275032547] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:44:36,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:44:36,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:44:36,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43025731] [2023-12-20 00:44:36,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:44:36,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:44:36,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:44:36,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:44:36,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:44:36,661 INFO L87 Difference]: Start difference. First operand 67122 states and 112160 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 00:44:39,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:44:39,773 INFO L93 Difference]: Finished difference Result 153060 states and 261819 transitions. [2023-12-20 00:44:39,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:44:39,773 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 131 [2023-12-20 00:44:39,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:44:40,140 INFO L225 Difference]: With dead ends: 153060 [2023-12-20 00:44:40,141 INFO L226 Difference]: Without dead ends: 85953 [2023-12-20 00:44:40,242 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 00:44:40,242 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 982 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 00:44:40,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [999 Valid, 722 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 00:44:40,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85953 states. [2023-12-20 00:44:42,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85953 to 67122. [2023-12-20 00:44:43,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67122 states, 61074 states have (on average 1.5815240527884207) internal successors, (96590), 61332 states have internal predecessors, (96590), 4249 states have call successors, (4249), 1543 states have call predecessors, (4249), 1798 states have return successors, (11064), 4502 states have call predecessors, (11064), 4247 states have call successors, (11064) [2023-12-20 00:44:43,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67122 states to 67122 states and 111903 transitions. [2023-12-20 00:44:43,226 INFO L78 Accepts]: Start accepts. Automaton has 67122 states and 111903 transitions. Word has length 131 [2023-12-20 00:44:43,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:44:43,226 INFO L495 AbstractCegarLoop]: Abstraction has 67122 states and 111903 transitions. [2023-12-20 00:44:43,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 00:44:43,226 INFO L276 IsEmpty]: Start isEmpty. Operand 67122 states and 111903 transitions. [2023-12-20 00:44:43,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-20 00:44:43,258 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:44:43,258 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:44:43,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 00:44:43,259 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:44:43,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:44:43,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1538199049, now seen corresponding path program 1 times [2023-12-20 00:44:43,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:44:43,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700492479] [2023-12-20 00:44:43,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:44:43,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:44:43,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:43,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:44:43,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:43,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 00:44:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:43,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-20 00:44:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:43,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-20 00:44:43,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:43,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 00:44:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:43,390 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 00:44:43,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:44:43,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700492479] [2023-12-20 00:44:43,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700492479] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:44:43,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:44:43,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:44:43,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022731665] [2023-12-20 00:44:43,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:44:43,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:44:43,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:44:43,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:44:43,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:44:43,391 INFO L87 Difference]: Start difference. First operand 67122 states and 111903 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 00:44:49,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:44:49,566 INFO L93 Difference]: Finished difference Result 248577 states and 420102 transitions. [2023-12-20 00:44:49,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 00:44:49,566 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 131 [2023-12-20 00:44:49,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:44:50,345 INFO L225 Difference]: With dead ends: 248577 [2023-12-20 00:44:50,345 INFO L226 Difference]: Without dead ends: 181470 [2023-12-20 00:44:50,477 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 00:44:50,477 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 1175 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 2939 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1190 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 3002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 00:44:50,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1190 Valid, 1687 Invalid, 3002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2939 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 00:44:50,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181470 states. [2023-12-20 00:44:55,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181470 to 134452. [2023-12-20 00:44:55,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134452 states, 122644 states have (on average 1.5807866671015296) internal successors, (193874), 123158 states have internal predecessors, (193874), 8217 states have call successors, (8217), 3079 states have call predecessors, (8217), 3590 states have return successors, (28410), 8726 states have call predecessors, (28410), 8215 states have call successors, (28410) [2023-12-20 00:44:56,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134452 states to 134452 states and 230501 transitions. [2023-12-20 00:44:56,423 INFO L78 Accepts]: Start accepts. Automaton has 134452 states and 230501 transitions. Word has length 131 [2023-12-20 00:44:56,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:44:56,424 INFO L495 AbstractCegarLoop]: Abstraction has 134452 states and 230501 transitions. [2023-12-20 00:44:56,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 00:44:56,424 INFO L276 IsEmpty]: Start isEmpty. Operand 134452 states and 230501 transitions. [2023-12-20 00:44:56,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-20 00:44:56,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:44:56,481 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:44:56,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 00:44:56,481 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:44:56,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:44:56,481 INFO L85 PathProgramCache]: Analyzing trace with hash 850364981, now seen corresponding path program 1 times [2023-12-20 00:44:56,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:44:56,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322782310] [2023-12-20 00:44:56,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:44:56,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:44:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:56,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:44:56,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:56,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 00:44:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:56,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-20 00:44:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:56,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-20 00:44:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:56,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 00:44:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:56,614 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 00:44:56,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:44:56,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322782310] [2023-12-20 00:44:56,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322782310] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:44:56,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:44:56,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:44:56,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129078860] [2023-12-20 00:44:56,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:44:56,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:44:56,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:44:56,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:44:56,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:44:56,615 INFO L87 Difference]: Start difference. First operand 134452 states and 230501 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:45:07,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:45:07,366 INFO L93 Difference]: Finished difference Result 489217 states and 852494 transitions. [2023-12-20 00:45:07,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 00:45:07,366 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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 131 [2023-12-20 00:45:07,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:45:08,926 INFO L225 Difference]: With dead ends: 489217 [2023-12-20 00:45:08,926 INFO L226 Difference]: Without dead ends: 354780 [2023-12-20 00:45:09,350 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 00:45:09,350 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 1229 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 2647 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1255 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 2711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 00:45:09,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1255 Valid, 1687 Invalid, 2711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 2647 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 00:45:09,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354780 states. [2023-12-20 00:45:20,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354780 to 269109. [2023-12-20 00:45:20,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269109 states, 246037 states have (on average 1.5808516605226044) internal successors, (388948), 247063 states have internal predecessors, (388948), 15897 states have call successors, (15897), 6151 states have call predecessors, (15897), 7174 states have return successors, (75968), 16918 states have call predecessors, (75968), 15895 states have call successors, (75968) [2023-12-20 00:45:22,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269109 states to 269109 states and 480813 transitions. [2023-12-20 00:45:22,135 INFO L78 Accepts]: Start accepts. Automaton has 269109 states and 480813 transitions. Word has length 131 [2023-12-20 00:45:22,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:45:22,136 INFO L495 AbstractCegarLoop]: Abstraction has 269109 states and 480813 transitions. [2023-12-20 00:45:22,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:45:22,136 INFO L276 IsEmpty]: Start isEmpty. Operand 269109 states and 480813 transitions. [2023-12-20 00:45:22,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-20 00:45:22,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:45:22,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:45:22,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 00:45:22,278 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:45:22,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:45:22,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1843531209, now seen corresponding path program 1 times [2023-12-20 00:45:22,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:45:22,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144227031] [2023-12-20 00:45:22,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:45:22,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:45:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:22,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:45:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:22,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 00:45:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:22,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-20 00:45:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:22,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-20 00:45:22,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:22,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 00:45:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:22,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:45:22,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:45:22,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144227031] [2023-12-20 00:45:22,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144227031] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:45:22,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:45:22,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:45:22,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851881108] [2023-12-20 00:45:22,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:45:22,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:45:22,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:45:22,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:45:22,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:45:22,634 INFO L87 Difference]: Start difference. First operand 269109 states and 480813 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 5 states have internal predecessors, (120), 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)