/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/Problem05_label49+token_ring.11.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 11:45:07,496 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 11:45:07,548 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 11:45:07,552 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 11:45:07,553 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 11:45:07,580 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 11:45:07,580 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 11:45:07,580 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 11:45:07,581 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 11:45:07,581 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 11:45:07,581 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 11:45:07,582 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 11:45:07,582 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 11:45:07,582 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 11:45:07,582 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 11:45:07,583 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 11:45:07,583 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 11:45:07,583 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 11:45:07,583 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 11:45:07,584 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 11:45:07,584 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 11:45:07,588 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 11:45:07,588 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 11:45:07,588 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 11:45:07,594 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 11:45:07,594 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 11:45:07,594 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 11:45:07,594 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 11:45:07,595 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 11:45:07,595 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 11:45:07,595 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 11:45:07,596 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 11:45:07,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 11:45:07,596 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 11:45:07,596 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 11:45:07,596 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 11:45:07,596 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 11:45:07,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 11:45:07,596 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 11:45:07,597 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 11:45:07,597 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 11:45:07,597 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 11:45:07,597 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 11:45:07,597 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 11:45:07,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 11:45:07,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 11:45:07,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 11:45:07,788 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 11:45:07,788 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 11:45:07,789 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label49+token_ring.11.cil-1.c [2023-12-20 11:45:08,993 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 11:45:09,455 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 11:45:09,457 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label49+token_ring.11.cil-1.c [2023-12-20 11:45:09,509 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd08f4afd/c44e6df8cbbe412d9bfb144b7b6e0160/FLAGe39eab75d [2023-12-20 11:45:09,522 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd08f4afd/c44e6df8cbbe412d9bfb144b7b6e0160 [2023-12-20 11:45:09,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 11:45:09,525 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 11:45:09,526 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 11:45:09,526 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 11:45:09,530 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 11:45:09,530 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 11:45:09" (1/1) ... [2023-12-20 11:45:09,531 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1512602d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:45:09, skipping insertion in model container [2023-12-20 11:45:09,531 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 11:45:09" (1/1) ... [2023-12-20 11:45:09,726 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 11:45:11,211 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label49+token_ring.11.cil-1.c[380593,380606] [2023-12-20 11:45:11,235 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label49+token_ring.11.cil-1.c[383339,383352] [2023-12-20 11:45:11,425 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 11:45:11,435 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 11:45:12,100 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label49+token_ring.11.cil-1.c[380593,380606] [2023-12-20 11:45:12,106 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label49+token_ring.11.cil-1.c[383339,383352] [2023-12-20 11:45:12,139 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 11:45:12,184 INFO L206 MainTranslator]: Completed translation [2023-12-20 11:45:12,186 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:45:12 WrapperNode [2023-12-20 11:45:12,186 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 11:45:12,187 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 11:45:12,187 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 11:45:12,187 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 11:45:12,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:45:12" (1/1) ... [2023-12-20 11:45:12,250 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:45:12" (1/1) ... [2023-12-20 11:45:12,548 INFO L138 Inliner]: procedures = 66, calls = 75, calls flagged for inlining = 43, calls inlined = 43, statements flattened = 13179 [2023-12-20 11:45:12,548 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 11:45:12,549 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 11:45:12,549 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 11:45:12,549 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 11:45:12,557 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:45:12" (1/1) ... [2023-12-20 11:45:12,558 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:45:12" (1/1) ... [2023-12-20 11:45:12,594 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:45:12" (1/1) ... [2023-12-20 11:45:12,640 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 11:45:12,640 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:45:12" (1/1) ... [2023-12-20 11:45:12,640 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:45:12" (1/1) ... [2023-12-20 11:45:12,915 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:45:12" (1/1) ... [2023-12-20 11:45:12,947 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:45:12" (1/1) ... [2023-12-20 11:45:13,018 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:45:12" (1/1) ... [2023-12-20 11:45:13,035 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:45:12" (1/1) ... [2023-12-20 11:45:13,078 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 11:45:13,079 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 11:45:13,080 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 11:45:13,080 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 11:45:13,081 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:45:12" (1/1) ... [2023-12-20 11:45:13,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 11:45:13,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:45:13,105 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 11:45:13,141 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 11:45:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 11:45:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-20 11:45:13,149 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-20 11:45:13,150 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-20 11:45:13,151 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-20 11:45:13,151 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-20 11:45:13,151 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-20 11:45:13,151 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-20 11:45:13,151 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-20 11:45:13,151 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-20 11:45:13,151 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-20 11:45:13,151 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-20 11:45:13,152 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-20 11:45:13,152 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-20 11:45:13,152 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-20 11:45:13,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 11:45:13,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 11:45:13,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 11:45:13,244 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 11:45:13,245 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 11:45:18,860 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 11:45:18,927 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 11:45:18,928 INFO L309 CfgBuilder]: Removed 15 assume(true) statements. [2023-12-20 11:45:18,928 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 11:45:18 BoogieIcfgContainer [2023-12-20 11:45:18,928 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 11:45:18,931 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 11:45:18,931 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 11:45:18,933 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 11:45:18,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 11:45:09" (1/3) ... [2023-12-20 11:45:18,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@596d1e10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 11:45:18, skipping insertion in model container [2023-12-20 11:45:18,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:45:12" (2/3) ... [2023-12-20 11:45:18,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@596d1e10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 11:45:18, skipping insertion in model container [2023-12-20 11:45:18,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 11:45:18" (3/3) ... [2023-12-20 11:45:18,935 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.11.cil-1.c [2023-12-20 11:45:18,947 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 11:45:18,947 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 11:45:19,004 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 11:45:19,009 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;@4255b778, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 11:45:19,009 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 11:45:19,018 INFO L276 IsEmpty]: Start isEmpty. Operand has 2456 states, 2419 states have (on average 1.8768085985944605) internal successors, (4540), 2424 states have internal predecessors, (4540), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-20 11:45:19,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-20 11:45:19,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:45:19,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:45:19,032 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:45:19,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:45:19,035 INFO L85 PathProgramCache]: Analyzing trace with hash 190505612, now seen corresponding path program 1 times [2023-12-20 11:45:19,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:45:19,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264815636] [2023-12-20 11:45:19,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:45:19,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:45:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:19,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:45:19,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:19,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 11:45:19,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:19,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 11:45:19,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:19,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-20 11:45:19,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:19,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-20 11:45:19,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:19,470 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 11:45:19,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:45:19,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264815636] [2023-12-20 11:45:19,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264815636] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:45:19,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:45:19,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 11:45:19,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752002300] [2023-12-20 11:45:19,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:45:19,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 11:45:19,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:45:19,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 11:45:19,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 11:45:19,534 INFO L87 Difference]: Start difference. First operand has 2456 states, 2419 states have (on average 1.8768085985944605) internal successors, (4540), 2424 states have internal predecessors, (4540), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 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 11:45:21,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:45:21,014 INFO L93 Difference]: Finished difference Result 5021 states and 9382 transitions. [2023-12-20 11:45:21,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 11:45:21,017 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 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 152 [2023-12-20 11:45:21,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:45:21,049 INFO L225 Difference]: With dead ends: 5021 [2023-12-20 11:45:21,049 INFO L226 Difference]: Without dead ends: 2571 [2023-12-20 11:45:21,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 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 11:45:21,069 INFO L413 NwaCegarLoop]: 4249 mSDtfsCounter, 916 mSDsluCounter, 12200 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 16449 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 11:45:21,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 16449 Invalid, 1051 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 11:45:21,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2571 states. [2023-12-20 11:45:21,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2571 to 2451. [2023-12-20 11:45:21,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2451 states, 2416 states have (on average 1.8385761589403973) internal successors, (4442), 2419 states have internal predecessors, (4442), 27 states have call successors, (27), 7 states have call predecessors, (27), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-20 11:45:21,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2451 states to 2451 states and 4494 transitions. [2023-12-20 11:45:21,192 INFO L78 Accepts]: Start accepts. Automaton has 2451 states and 4494 transitions. Word has length 152 [2023-12-20 11:45:21,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:45:21,192 INFO L495 AbstractCegarLoop]: Abstraction has 2451 states and 4494 transitions. [2023-12-20 11:45:21,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 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 11:45:21,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2451 states and 4494 transitions. [2023-12-20 11:45:21,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-20 11:45:21,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:45:21,195 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:45:21,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 11:45:21,196 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:45:21,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:45:21,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1978375434, now seen corresponding path program 1 times [2023-12-20 11:45:21,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:45:21,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716796505] [2023-12-20 11:45:21,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:45:21,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:45:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:21,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:45:21,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:21,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 11:45:21,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:21,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 11:45:21,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:21,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-20 11:45:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:21,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-20 11:45:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:21,471 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 11:45:21,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:45:21,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716796505] [2023-12-20 11:45:21,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716796505] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:45:21,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:45:21,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 11:45:21,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016045962] [2023-12-20 11:45:21,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:45:21,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 11:45:21,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:45:21,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 11:45:21,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 11:45:21,474 INFO L87 Difference]: Start difference. First operand 2451 states and 4494 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 4 states have internal predecessors, (141), 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 11:45:24,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:45:24,010 INFO L93 Difference]: Finished difference Result 3334 states and 5970 transitions. [2023-12-20 11:45:24,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 11:45:24,012 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 4 states have internal predecessors, (141), 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 152 [2023-12-20 11:45:24,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:45:24,027 INFO L225 Difference]: With dead ends: 3334 [2023-12-20 11:45:24,028 INFO L226 Difference]: Without dead ends: 3021 [2023-12-20 11:45:24,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-20 11:45:24,031 INFO L413 NwaCegarLoop]: 4216 mSDtfsCounter, 5341 mSDsluCounter, 12642 mSDsCounter, 0 mSdLazyCounter, 2134 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5359 SdHoareTripleChecker+Valid, 16858 SdHoareTripleChecker+Invalid, 2246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 11:45:24,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5359 Valid, 16858 Invalid, 2246 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [112 Valid, 2134 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 11:45:24,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states. [2023-12-20 11:45:24,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 2780. [2023-12-20 11:45:24,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2780 states, 2718 states have (on average 1.8178807947019868) internal successors, (4941), 2722 states have internal predecessors, (4941), 47 states have call successors, (47), 13 states have call predecessors, (47), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2023-12-20 11:45:24,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2780 states to 2780 states and 5036 transitions. [2023-12-20 11:45:24,108 INFO L78 Accepts]: Start accepts. Automaton has 2780 states and 5036 transitions. Word has length 152 [2023-12-20 11:45:24,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:45:24,108 INFO L495 AbstractCegarLoop]: Abstraction has 2780 states and 5036 transitions. [2023-12-20 11:45:24,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 4 states have internal predecessors, (141), 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 11:45:24,108 INFO L276 IsEmpty]: Start isEmpty. Operand 2780 states and 5036 transitions. [2023-12-20 11:45:24,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-20 11:45:24,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:45:24,110 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:45:24,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 11:45:24,111 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:45:24,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:45:24,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1779625978, now seen corresponding path program 1 times [2023-12-20 11:45:24,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:45:24,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676940792] [2023-12-20 11:45:24,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:45:24,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:45:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:24,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:45:24,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:24,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 11:45:24,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:24,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 11:45:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:24,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-20 11:45:24,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:24,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-20 11:45:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:24,318 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 11:45:24,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:45:24,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676940792] [2023-12-20 11:45:24,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676940792] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:45:24,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:45:24,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:45:24,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483879104] [2023-12-20 11:45:24,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:45:24,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:45:24,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:45:24,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:45:24,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:45:24,320 INFO L87 Difference]: Start difference. First operand 2780 states and 5036 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 11:45:27,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:45:27,189 INFO L93 Difference]: Finished difference Result 4129 states and 7292 transitions. [2023-12-20 11:45:27,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:45:27,189 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 152 [2023-12-20 11:45:27,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:45:27,202 INFO L225 Difference]: With dead ends: 4129 [2023-12-20 11:45:27,202 INFO L226 Difference]: Without dead ends: 3487 [2023-12-20 11:45:27,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 11:45:27,206 INFO L413 NwaCegarLoop]: 4412 mSDtfsCounter, 5370 mSDsluCounter, 17339 mSDsCounter, 0 mSdLazyCounter, 3476 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5388 SdHoareTripleChecker+Valid, 21751 SdHoareTripleChecker+Invalid, 3539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 11:45:27,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5388 Valid, 21751 Invalid, 3539 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 3476 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 11:45:27,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3487 states. [2023-12-20 11:45:27,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3487 to 3084. [2023-12-20 11:45:27,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3084 states, 2995 states have (on average 1.7996661101836393) internal successors, (5390), 3000 states have internal predecessors, (5390), 67 states have call successors, (67), 19 states have call predecessors, (67), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2023-12-20 11:45:27,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3084 states to 3084 states and 5527 transitions. [2023-12-20 11:45:27,379 INFO L78 Accepts]: Start accepts. Automaton has 3084 states and 5527 transitions. Word has length 152 [2023-12-20 11:45:27,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:45:27,379 INFO L495 AbstractCegarLoop]: Abstraction has 3084 states and 5527 transitions. [2023-12-20 11:45:27,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 11:45:27,380 INFO L276 IsEmpty]: Start isEmpty. Operand 3084 states and 5527 transitions. [2023-12-20 11:45:27,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-20 11:45:27,381 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:45:27,381 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:45:27,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 11:45:27,382 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:45:27,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:45:27,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1970468744, now seen corresponding path program 1 times [2023-12-20 11:45:27,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:45:27,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919885190] [2023-12-20 11:45:27,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:45:27,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:45:27,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:27,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:45:27,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:27,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 11:45:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:27,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 11:45:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:27,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-20 11:45:27,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:27,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-20 11:45:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:27,585 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 11:45:27,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:45:27,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919885190] [2023-12-20 11:45:27,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919885190] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:45:27,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:45:27,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:45:27,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984476999] [2023-12-20 11:45:27,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:45:27,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:45:27,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:45:27,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:45:27,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:45:27,587 INFO L87 Difference]: Start difference. First operand 3084 states and 5527 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 11:45:30,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:45:30,803 INFO L93 Difference]: Finished difference Result 5294 states and 9217 transitions. [2023-12-20 11:45:30,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:45:30,804 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 152 [2023-12-20 11:45:30,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:45:30,821 INFO L225 Difference]: With dead ends: 5294 [2023-12-20 11:45:30,822 INFO L226 Difference]: Without dead ends: 4348 [2023-12-20 11:45:30,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 11:45:30,826 INFO L413 NwaCegarLoop]: 4410 mSDtfsCounter, 5368 mSDsluCounter, 17339 mSDsCounter, 0 mSdLazyCounter, 3472 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5386 SdHoareTripleChecker+Valid, 21749 SdHoareTripleChecker+Invalid, 3537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 11:45:30,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5386 Valid, 21749 Invalid, 3537 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 3472 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 11:45:30,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4348 states. [2023-12-20 11:45:30,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4348 to 3693. [2023-12-20 11:45:30,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3693 states, 3550 states have (on average 1.771549295774648) internal successors, (6289), 3557 states have internal predecessors, (6289), 107 states have call successors, (107), 31 states have call predecessors, (107), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-12-20 11:45:30,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3693 states to 3693 states and 6514 transitions. [2023-12-20 11:45:30,917 INFO L78 Accepts]: Start accepts. Automaton has 3693 states and 6514 transitions. Word has length 152 [2023-12-20 11:45:30,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:45:30,917 INFO L495 AbstractCegarLoop]: Abstraction has 3693 states and 6514 transitions. [2023-12-20 11:45:30,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 11:45:30,918 INFO L276 IsEmpty]: Start isEmpty. Operand 3693 states and 6514 transitions. [2023-12-20 11:45:30,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-20 11:45:30,919 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:45:30,919 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:45:30,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 11:45:30,920 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:45:30,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:45:30,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1649338426, now seen corresponding path program 1 times [2023-12-20 11:45:30,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:45:30,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889833019] [2023-12-20 11:45:30,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:45:30,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:45:30,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:30,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:45:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:31,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 11:45:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:31,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 11:45:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:31,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-20 11:45:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:31,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-20 11:45:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:31,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:45:31,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:45:31,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889833019] [2023-12-20 11:45:31,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889833019] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:45:31,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:45:31,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:45:31,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774132519] [2023-12-20 11:45:31,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:45:31,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:45:31,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:45:31,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:45:31,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:45:31,113 INFO L87 Difference]: Start difference. First operand 3693 states and 6514 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 11:45:32,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:45:32,652 INFO L93 Difference]: Finished difference Result 5891 states and 10195 transitions. [2023-12-20 11:45:32,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:45:32,653 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 152 [2023-12-20 11:45:32,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:45:32,666 INFO L225 Difference]: With dead ends: 5891 [2023-12-20 11:45:32,666 INFO L226 Difference]: Without dead ends: 4336 [2023-12-20 11:45:32,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 11:45:32,670 INFO L413 NwaCegarLoop]: 4203 mSDtfsCounter, 4971 mSDsluCounter, 16586 mSDsCounter, 0 mSdLazyCounter, 1773 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4990 SdHoareTripleChecker+Valid, 20789 SdHoareTripleChecker+Invalid, 1840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 11:45:32,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4990 Valid, 20789 Invalid, 1840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1773 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 11:45:32,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4336 states. [2023-12-20 11:45:32,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4336 to 3693. [2023-12-20 11:45:32,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3693 states, 3550 states have (on average 1.7701408450704226) internal successors, (6284), 3557 states have internal predecessors, (6284), 107 states have call successors, (107), 31 states have call predecessors, (107), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-12-20 11:45:32,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3693 states to 3693 states and 6509 transitions. [2023-12-20 11:45:32,747 INFO L78 Accepts]: Start accepts. Automaton has 3693 states and 6509 transitions. Word has length 152 [2023-12-20 11:45:32,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:45:32,748 INFO L495 AbstractCegarLoop]: Abstraction has 3693 states and 6509 transitions. [2023-12-20 11:45:32,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 11:45:32,748 INFO L276 IsEmpty]: Start isEmpty. Operand 3693 states and 6509 transitions. [2023-12-20 11:45:32,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-20 11:45:32,750 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:45:32,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:45:32,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 11:45:32,750 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:45:32,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:45:32,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1697576904, now seen corresponding path program 1 times [2023-12-20 11:45:32,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:45:32,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830380182] [2023-12-20 11:45:32,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:45:32,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:45:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:32,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:45:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:32,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 11:45:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:32,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 11:45:32,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:32,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-20 11:45:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:32,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-20 11:45:32,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:32,929 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 11:45:32,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:45:32,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830380182] [2023-12-20 11:45:32,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830380182] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:45:32,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:45:32,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:45:32,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675247823] [2023-12-20 11:45:32,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:45:32,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:45:32,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:45:32,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:45:32,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:45:32,931 INFO L87 Difference]: Start difference. First operand 3693 states and 6509 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 11:45:34,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:45:34,535 INFO L93 Difference]: Finished difference Result 5885 states and 10169 transitions. [2023-12-20 11:45:34,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:45:34,535 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 152 [2023-12-20 11:45:34,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:45:34,549 INFO L225 Difference]: With dead ends: 5885 [2023-12-20 11:45:34,549 INFO L226 Difference]: Without dead ends: 4330 [2023-12-20 11:45:34,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 11:45:34,554 INFO L413 NwaCegarLoop]: 4203 mSDtfsCounter, 4969 mSDsluCounter, 16586 mSDsCounter, 0 mSdLazyCounter, 1757 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4988 SdHoareTripleChecker+Valid, 20789 SdHoareTripleChecker+Invalid, 1824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 11:45:34,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4988 Valid, 20789 Invalid, 1824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1757 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 11:45:34,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4330 states. [2023-12-20 11:45:34,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4330 to 3693. [2023-12-20 11:45:34,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3693 states, 3550 states have (on average 1.7687323943661972) internal successors, (6279), 3557 states have internal predecessors, (6279), 107 states have call successors, (107), 31 states have call predecessors, (107), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-12-20 11:45:34,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3693 states to 3693 states and 6504 transitions. [2023-12-20 11:45:34,626 INFO L78 Accepts]: Start accepts. Automaton has 3693 states and 6504 transitions. Word has length 152 [2023-12-20 11:45:34,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:45:34,626 INFO L495 AbstractCegarLoop]: Abstraction has 3693 states and 6504 transitions. [2023-12-20 11:45:34,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 11:45:34,626 INFO L276 IsEmpty]: Start isEmpty. Operand 3693 states and 6504 transitions. [2023-12-20 11:45:34,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-20 11:45:34,627 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:45:34,628 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:45:34,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 11:45:34,628 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:45:34,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:45:34,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1112805254, now seen corresponding path program 1 times [2023-12-20 11:45:34,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:45:34,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37489994] [2023-12-20 11:45:34,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:45:34,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:45:34,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:34,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:45:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:34,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 11:45:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:34,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 11:45:34,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:34,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-20 11:45:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:34,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-20 11:45:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:34,814 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 11:45:34,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:45:34,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37489994] [2023-12-20 11:45:34,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37489994] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:45:34,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:45:34,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:45:34,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952792409] [2023-12-20 11:45:34,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:45:34,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:45:34,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:45:34,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:45:34,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:45:34,816 INFO L87 Difference]: Start difference. First operand 3693 states and 6504 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 11:45:36,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:45:36,571 INFO L93 Difference]: Finished difference Result 5878 states and 10141 transitions. [2023-12-20 11:45:36,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:45:36,572 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 152 [2023-12-20 11:45:36,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:45:36,587 INFO L225 Difference]: With dead ends: 5878 [2023-12-20 11:45:36,587 INFO L226 Difference]: Without dead ends: 4323 [2023-12-20 11:45:36,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 11:45:36,593 INFO L413 NwaCegarLoop]: 4203 mSDtfsCounter, 4972 mSDsluCounter, 16586 mSDsCounter, 0 mSdLazyCounter, 1736 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4991 SdHoareTripleChecker+Valid, 20789 SdHoareTripleChecker+Invalid, 1803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 11:45:36,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4991 Valid, 20789 Invalid, 1803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1736 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 11:45:36,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4323 states. [2023-12-20 11:45:36,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4323 to 3693. [2023-12-20 11:45:36,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3693 states, 3550 states have (on average 1.7673239436619719) internal successors, (6274), 3557 states have internal predecessors, (6274), 107 states have call successors, (107), 31 states have call predecessors, (107), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-12-20 11:45:36,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3693 states to 3693 states and 6499 transitions. [2023-12-20 11:45:36,827 INFO L78 Accepts]: Start accepts. Automaton has 3693 states and 6499 transitions. Word has length 152 [2023-12-20 11:45:36,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:45:36,827 INFO L495 AbstractCegarLoop]: Abstraction has 3693 states and 6499 transitions. [2023-12-20 11:45:36,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 11:45:36,828 INFO L276 IsEmpty]: Start isEmpty. Operand 3693 states and 6499 transitions. [2023-12-20 11:45:36,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-20 11:45:36,835 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:45:36,835 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:45:36,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 11:45:36,835 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:45:36,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:45:36,836 INFO L85 PathProgramCache]: Analyzing trace with hash 678299656, now seen corresponding path program 1 times [2023-12-20 11:45:36,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:45:36,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356386095] [2023-12-20 11:45:36,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:45:36,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:45:36,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:36,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:45:36,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:36,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 11:45:36,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:37,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 11:45:37,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:37,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-20 11:45:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:37,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-20 11:45:37,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:37,056 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 11:45:37,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:45:37,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356386095] [2023-12-20 11:45:37,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356386095] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:45:37,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:45:37,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:45:37,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614099370] [2023-12-20 11:45:37,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:45:37,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:45:37,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:45:37,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:45:37,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:45:37,057 INFO L87 Difference]: Start difference. First operand 3693 states and 6499 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 11:45:38,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:45:38,354 INFO L93 Difference]: Finished difference Result 5866 states and 10103 transitions. [2023-12-20 11:45:38,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:45:38,354 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 152 [2023-12-20 11:45:38,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:45:38,363 INFO L225 Difference]: With dead ends: 5866 [2023-12-20 11:45:38,363 INFO L226 Difference]: Without dead ends: 4311 [2023-12-20 11:45:38,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 11:45:38,367 INFO L413 NwaCegarLoop]: 4203 mSDtfsCounter, 5111 mSDsluCounter, 12468 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5130 SdHoareTripleChecker+Valid, 16671 SdHoareTripleChecker+Invalid, 1640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 11:45:38,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5130 Valid, 16671 Invalid, 1640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 11:45:38,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4311 states. [2023-12-20 11:45:38,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4311 to 3693. [2023-12-20 11:45:38,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3693 states, 3550 states have (on average 1.7659154929577465) internal successors, (6269), 3557 states have internal predecessors, (6269), 107 states have call successors, (107), 31 states have call predecessors, (107), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-12-20 11:45:38,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3693 states to 3693 states and 6494 transitions. [2023-12-20 11:45:38,447 INFO L78 Accepts]: Start accepts. Automaton has 3693 states and 6494 transitions. Word has length 152 [2023-12-20 11:45:38,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:45:38,447 INFO L495 AbstractCegarLoop]: Abstraction has 3693 states and 6494 transitions. [2023-12-20 11:45:38,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 11:45:38,447 INFO L276 IsEmpty]: Start isEmpty. Operand 3693 states and 6494 transitions. [2023-12-20 11:45:38,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-20 11:45:38,449 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:45:38,449 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:45:38,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 11:45:38,449 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:45:38,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:45:38,450 INFO L85 PathProgramCache]: Analyzing trace with hash -28296950, now seen corresponding path program 1 times [2023-12-20 11:45:38,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:45:38,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30837627] [2023-12-20 11:45:38,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:45:38,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:45:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:38,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:45:38,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:38,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 11:45:38,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:38,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 11:45:38,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:38,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-20 11:45:38,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:38,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-20 11:45:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:38,631 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 11:45:38,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:45:38,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30837627] [2023-12-20 11:45:38,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30837627] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:45:38,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:45:38,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:45:38,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565631639] [2023-12-20 11:45:38,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:45:38,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:45:38,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:45:38,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:45:38,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:45:38,633 INFO L87 Difference]: Start difference. First operand 3693 states and 6494 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 11:45:41,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:45:41,990 INFO L93 Difference]: Finished difference Result 7494 states and 12734 transitions. [2023-12-20 11:45:41,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:45:41,991 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 152 [2023-12-20 11:45:41,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:45:42,001 INFO L225 Difference]: With dead ends: 7494 [2023-12-20 11:45:42,002 INFO L226 Difference]: Without dead ends: 5939 [2023-12-20 11:45:42,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 11:45:42,005 INFO L413 NwaCegarLoop]: 4410 mSDtfsCounter, 5339 mSDsluCounter, 17339 mSDsCounter, 0 mSdLazyCounter, 3342 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5357 SdHoareTripleChecker+Valid, 21749 SdHoareTripleChecker+Invalid, 3407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 11:45:42,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5357 Valid, 21749 Invalid, 3407 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 3342 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 11:45:42,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5939 states. [2023-12-20 11:45:42,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5939 to 4934. [2023-12-20 11:45:42,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4934 states, 4683 states have (on average 1.7258167841127483) internal successors, (8082), 4694 states have internal predecessors, (8082), 187 states have call successors, (187), 55 states have call predecessors, (187), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2023-12-20 11:45:42,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4934 states to 4934 states and 8489 transitions. [2023-12-20 11:45:42,150 INFO L78 Accepts]: Start accepts. Automaton has 4934 states and 8489 transitions. Word has length 152 [2023-12-20 11:45:42,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:45:42,150 INFO L495 AbstractCegarLoop]: Abstraction has 4934 states and 8489 transitions. [2023-12-20 11:45:42,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 11:45:42,150 INFO L276 IsEmpty]: Start isEmpty. Operand 4934 states and 8489 transitions. [2023-12-20 11:45:42,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-20 11:45:42,153 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:45:42,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:42,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 11:45:42,154 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:45:42,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:45:42,154 INFO L85 PathProgramCache]: Analyzing trace with hash 918740936, now seen corresponding path program 1 times [2023-12-20 11:45:42,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:45:42,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955891135] [2023-12-20 11:45:42,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:45:42,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:45:42,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:42,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:45:42,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:42,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 11:45:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:42,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 11:45:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:42,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-20 11:45:42,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:42,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-20 11:45:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:42,357 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 11:45:42,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:45:42,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955891135] [2023-12-20 11:45:42,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955891135] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:45:42,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:45:42,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:45:42,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653160469] [2023-12-20 11:45:42,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:45:42,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:45:42,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:45:42,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:45:42,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:45:42,358 INFO L87 Difference]: Start difference. First operand 4934 states and 8489 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 11:45:45,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:45:45,197 INFO L93 Difference]: Finished difference Result 11959 states and 20005 transitions. [2023-12-20 11:45:45,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:45:45,197 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 152 [2023-12-20 11:45:45,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:45:45,219 INFO L225 Difference]: With dead ends: 11959 [2023-12-20 11:45:45,219 INFO L226 Difference]: Without dead ends: 9163 [2023-12-20 11:45:45,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 11:45:45,228 INFO L413 NwaCegarLoop]: 4410 mSDtfsCounter, 5338 mSDsluCounter, 17339 mSDsCounter, 0 mSdLazyCounter, 3329 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5356 SdHoareTripleChecker+Valid, 21749 SdHoareTripleChecker+Invalid, 3394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 11:45:45,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5356 Valid, 21749 Invalid, 3394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3329 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 11:45:45,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9163 states. [2023-12-20 11:45:45,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9163 to 7413. [2023-12-20 11:45:45,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7413 states, 6946 states have (on average 1.6841347538151454) internal successors, (11698), 6965 states have internal predecessors, (11698), 347 states have call successors, (347), 103 states have call predecessors, (347), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2023-12-20 11:45:45,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7413 states to 7413 states and 12487 transitions. [2023-12-20 11:45:45,575 INFO L78 Accepts]: Start accepts. Automaton has 7413 states and 12487 transitions. Word has length 152 [2023-12-20 11:45:45,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:45:45,575 INFO L495 AbstractCegarLoop]: Abstraction has 7413 states and 12487 transitions. [2023-12-20 11:45:45,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 11:45:45,575 INFO L276 IsEmpty]: Start isEmpty. Operand 7413 states and 12487 transitions. [2023-12-20 11:45:45,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-20 11:45:45,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:45:45,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:45:45,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 11:45:45,580 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:45:45,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:45:45,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1780574538, now seen corresponding path program 1 times [2023-12-20 11:45:45,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:45:45,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621555680] [2023-12-20 11:45:45,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:45:45,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:45:45,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:45,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:45:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:45,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 11:45:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:45,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 11:45:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:45,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-20 11:45:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:45,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-20 11:45:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:45,768 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 11:45:45,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:45:45,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621555680] [2023-12-20 11:45:45,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621555680] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:45:45,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:45:45,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:45:45,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572449397] [2023-12-20 11:45:45,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:45:45,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:45:45,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:45:45,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:45:45,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:45:45,770 INFO L87 Difference]: Start difference. First operand 7413 states and 12487 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 11:45:48,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:45:48,926 INFO L93 Difference]: Finished difference Result 20880 states and 34589 transitions. [2023-12-20 11:45:48,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:45:48,927 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 152 [2023-12-20 11:45:48,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:45:48,998 INFO L225 Difference]: With dead ends: 20880 [2023-12-20 11:45:48,998 INFO L226 Difference]: Without dead ends: 15605 [2023-12-20 11:45:49,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 11:45:49,016 INFO L413 NwaCegarLoop]: 4410 mSDtfsCounter, 5337 mSDsluCounter, 17339 mSDsCounter, 0 mSdLazyCounter, 3316 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5355 SdHoareTripleChecker+Valid, 21749 SdHoareTripleChecker+Invalid, 3381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 11:45:49,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5355 Valid, 21749 Invalid, 3381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3316 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 11:45:49,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15605 states. [2023-12-20 11:45:49,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15605 to 12386. [2023-12-20 11:45:49,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12386 states, 11487 states have (on average 1.649865064855924) internal successors, (18952), 11522 states have internal predecessors, (18952), 667 states have call successors, (667), 199 states have call predecessors, (667), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2023-12-20 11:45:49,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12386 states to 12386 states and 20559 transitions. [2023-12-20 11:45:49,494 INFO L78 Accepts]: Start accepts. Automaton has 12386 states and 20559 transitions. Word has length 152 [2023-12-20 11:45:49,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:45:49,494 INFO L495 AbstractCegarLoop]: Abstraction has 12386 states and 20559 transitions. [2023-12-20 11:45:49,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 11:45:49,494 INFO L276 IsEmpty]: Start isEmpty. Operand 12386 states and 20559 transitions. [2023-12-20 11:45:49,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-20 11:45:49,501 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:45:49,501 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:45:49,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 11:45:49,501 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:45:49,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:45:49,502 INFO L85 PathProgramCache]: Analyzing trace with hash -269834360, now seen corresponding path program 1 times [2023-12-20 11:45:49,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:45:49,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918676432] [2023-12-20 11:45:49,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:45:49,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:45:49,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:49,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:45:49,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:49,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 11:45:49,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:49,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 11:45:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:49,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-20 11:45:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:49,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-20 11:45:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:49,661 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 11:45:49,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:45:49,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918676432] [2023-12-20 11:45:49,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918676432] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:45:49,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:45:49,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:45:49,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263910947] [2023-12-20 11:45:49,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:45:49,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:45:49,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:45:49,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:45:49,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:45:49,663 INFO L87 Difference]: Start difference. First operand 12386 states and 20559 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 11:45:51,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:45:51,213 INFO L93 Difference]: Finished difference Result 26016 states and 43196 transitions. [2023-12-20 11:45:51,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:45:51,214 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 152 [2023-12-20 11:45:51,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:45:51,284 INFO L225 Difference]: With dead ends: 26016 [2023-12-20 11:45:51,284 INFO L226 Difference]: Without dead ends: 15768 [2023-12-20 11:45:51,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 11:45:51,322 INFO L413 NwaCegarLoop]: 4203 mSDtfsCounter, 5112 mSDsluCounter, 12468 mSDsCounter, 0 mSdLazyCounter, 1508 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5131 SdHoareTripleChecker+Valid, 16671 SdHoareTripleChecker+Invalid, 1602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 11:45:51,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5131 Valid, 16671 Invalid, 1602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1508 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 11:45:51,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15768 states. [2023-12-20 11:45:51,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15768 to 12386. [2023-12-20 11:45:51,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12386 states, 11487 states have (on average 1.646992252111082) internal successors, (18919), 11522 states have internal predecessors, (18919), 667 states have call successors, (667), 199 states have call predecessors, (667), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2023-12-20 11:45:51,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12386 states to 12386 states and 20526 transitions. [2023-12-20 11:45:51,967 INFO L78 Accepts]: Start accepts. Automaton has 12386 states and 20526 transitions. Word has length 152 [2023-12-20 11:45:51,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:45:51,968 INFO L495 AbstractCegarLoop]: Abstraction has 12386 states and 20526 transitions. [2023-12-20 11:45:51,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 11:45:51,969 INFO L276 IsEmpty]: Start isEmpty. Operand 12386 states and 20526 transitions. [2023-12-20 11:45:51,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-20 11:45:51,977 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:45:51,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:45:51,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 11:45:51,977 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:45:51,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:45:51,978 INFO L85 PathProgramCache]: Analyzing trace with hash 218212746, now seen corresponding path program 1 times [2023-12-20 11:45:51,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:45:51,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064006921] [2023-12-20 11:45:51,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:45:51,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:45:51,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:52,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:45:52,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:52,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 11:45:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:52,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 11:45:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:52,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-20 11:45:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:52,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-20 11:45:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:52,166 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 11:45:52,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:45:52,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064006921] [2023-12-20 11:45:52,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064006921] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:45:52,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:45:52,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:45:52,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016213533] [2023-12-20 11:45:52,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:45:52,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:45:52,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:45:52,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:45:52,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:45:52,168 INFO L87 Difference]: Start difference. First operand 12386 states and 20526 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 11:45:55,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:45:55,882 INFO L93 Difference]: Finished difference Result 43169 states and 70985 transitions. [2023-12-20 11:45:55,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:45:55,883 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 152 [2023-12-20 11:45:55,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:45:55,995 INFO L225 Difference]: With dead ends: 43169 [2023-12-20 11:45:55,996 INFO L226 Difference]: Without dead ends: 32921 [2023-12-20 11:45:56,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:45:56,031 INFO L413 NwaCegarLoop]: 4408 mSDtfsCounter, 5728 mSDsluCounter, 17334 mSDsCounter, 0 mSdLazyCounter, 3268 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5758 SdHoareTripleChecker+Valid, 21742 SdHoareTripleChecker+Invalid, 3336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 11:45:56,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5758 Valid, 21742 Invalid, 3336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3268 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 11:45:56,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32921 states. [2023-12-20 11:45:56,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32921 to 22332. [2023-12-20 11:45:56,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22332 states, 20601 states have (on average 1.6233677976797243) internal successors, (33443), 20668 states have internal predecessors, (33443), 1275 states have call successors, (1275), 391 states have call predecessors, (1275), 454 states have return successors, (2066), 1336 states have call predecessors, (2066), 1273 states have call successors, (2066) [2023-12-20 11:45:56,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22332 states to 22332 states and 36784 transitions. [2023-12-20 11:45:56,869 INFO L78 Accepts]: Start accepts. Automaton has 22332 states and 36784 transitions. Word has length 152 [2023-12-20 11:45:56,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:45:56,869 INFO L495 AbstractCegarLoop]: Abstraction has 22332 states and 36784 transitions. [2023-12-20 11:45:56,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 11:45:56,869 INFO L276 IsEmpty]: Start isEmpty. Operand 22332 states and 36784 transitions. [2023-12-20 11:45:56,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-20 11:45:56,880 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:45:56,880 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:45:56,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 11:45:56,881 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:45:56,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:45:56,881 INFO L85 PathProgramCache]: Analyzing trace with hash -874422456, now seen corresponding path program 1 times [2023-12-20 11:45:56,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:45:56,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299859778] [2023-12-20 11:45:56,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:45:56,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:45:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:56,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:45:56,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:56,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 11:45:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:57,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 11:45:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:57,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-20 11:45:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:57,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-20 11:45:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:57,053 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 11:45:57,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:45:57,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299859778] [2023-12-20 11:45:57,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299859778] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:45:57,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:45:57,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:45:57,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40537484] [2023-12-20 11:45:57,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:45:57,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:45:57,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:45:57,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:45:57,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:45:57,055 INFO L87 Difference]: Start difference. First operand 22332 states and 36784 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 11:46:01,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:46:01,412 INFO L93 Difference]: Finished difference Result 82441 states and 135945 transitions. [2023-12-20 11:46:01,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:46:01,413 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 152 [2023-12-20 11:46:01,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:46:01,775 INFO L225 Difference]: With dead ends: 82441 [2023-12-20 11:46:01,775 INFO L226 Difference]: Without dead ends: 62247 [2023-12-20 11:46:01,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:46:01,819 INFO L413 NwaCegarLoop]: 4407 mSDtfsCounter, 5425 mSDsluCounter, 17331 mSDsCounter, 0 mSdLazyCounter, 3870 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5442 SdHoareTripleChecker+Valid, 21738 SdHoareTripleChecker+Invalid, 3937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 11:46:01,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5442 Valid, 21738 Invalid, 3937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3870 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 11:46:01,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62247 states. [2023-12-20 11:46:03,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62247 to 41581. [2023-12-20 11:46:03,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41581 states, 38218 states have (on average 1.606494322047203) internal successors, (61397), 38349 states have internal predecessors, (61397), 2459 states have call successors, (2459), 775 states have call predecessors, (2459), 902 states have return successors, (4772), 2584 states have call predecessors, (4772), 2457 states have call successors, (4772) [2023-12-20 11:46:03,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41581 states to 41581 states and 68628 transitions. [2023-12-20 11:46:03,342 INFO L78 Accepts]: Start accepts. Automaton has 41581 states and 68628 transitions. Word has length 152 [2023-12-20 11:46:03,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:46:03,342 INFO L495 AbstractCegarLoop]: Abstraction has 41581 states and 68628 transitions. [2023-12-20 11:46:03,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 11:46:03,342 INFO L276 IsEmpty]: Start isEmpty. Operand 41581 states and 68628 transitions. [2023-12-20 11:46:03,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-20 11:46:03,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:46:03,361 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:46:03,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 11:46:03,361 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:46:03,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:46:03,362 INFO L85 PathProgramCache]: Analyzing trace with hash 2138372554, now seen corresponding path program 1 times [2023-12-20 11:46:03,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:46:03,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448840828] [2023-12-20 11:46:03,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:46:03,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:46:03,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:46:03,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:46:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:46:03,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 11:46:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:46:03,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 11:46:03,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:46:03,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-20 11:46:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:46:03,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-20 11:46:03,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:46:03,545 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 11:46:03,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:46:03,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448840828] [2023-12-20 11:46:03,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448840828] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:46:03,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:46:03,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:46:03,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954355028] [2023-12-20 11:46:03,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:46:03,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:46:03,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:46:03,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:46:03,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:46:03,546 INFO L87 Difference]: Start difference. First operand 41581 states and 68628 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 11:46:08,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:46:08,981 INFO L93 Difference]: Finished difference Result 156502 states and 260123 transitions. [2023-12-20 11:46:08,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:46:08,981 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 152 [2023-12-20 11:46:08,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:46:09,599 INFO L225 Difference]: With dead ends: 156502 [2023-12-20 11:46:09,599 INFO L226 Difference]: Without dead ends: 117059 [2023-12-20 11:46:09,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:46:09,700 INFO L413 NwaCegarLoop]: 4408 mSDtfsCounter, 5623 mSDsluCounter, 17334 mSDsCounter, 0 mSdLazyCounter, 3223 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5653 SdHoareTripleChecker+Valid, 21742 SdHoareTripleChecker+Invalid, 3291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 11:46:09,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5653 Valid, 21742 Invalid, 3291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3223 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 11:46:09,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117059 states. [2023-12-20 11:46:12,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117059 to 80847. [2023-12-20 11:46:13,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80847 states, 74284 states have (on average 1.5998196112217975) internal successors, (118841), 74543 states have internal predecessors, (118841), 4763 states have call successors, (4763), 1543 states have call predecessors, (4763), 1798 states have return successors, (11578), 5016 states have call predecessors, (11578), 4761 states have call successors, (11578) [2023-12-20 11:46:13,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80847 states to 80847 states and 135182 transitions. [2023-12-20 11:46:13,407 INFO L78 Accepts]: Start accepts. Automaton has 80847 states and 135182 transitions. Word has length 152 [2023-12-20 11:46:13,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:46:13,407 INFO L495 AbstractCegarLoop]: Abstraction has 80847 states and 135182 transitions. [2023-12-20 11:46:13,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 11:46:13,408 INFO L276 IsEmpty]: Start isEmpty. Operand 80847 states and 135182 transitions. [2023-12-20 11:46:13,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-20 11:46:13,494 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:46:13,494 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:46:13,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 11:46:13,494 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:46:13,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:46:13,494 INFO L85 PathProgramCache]: Analyzing trace with hash 416369868, now seen corresponding path program 1 times [2023-12-20 11:46:13,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:46:13,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569785596] [2023-12-20 11:46:13,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:46:13,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:46:13,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:46:13,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:46:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:46:13,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 11:46:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:46:13,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 11:46:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:46:13,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-20 11:46:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:46:13,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-20 11:46:13,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:46:13,865 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 11:46:13,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:46:13,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569785596] [2023-12-20 11:46:13,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569785596] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:46:13,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:46:13,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:46:13,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451862518] [2023-12-20 11:46:13,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:46:13,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:46:13,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:46:13,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:46:13,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:46:13,868 INFO L87 Difference]: Start difference. First operand 80847 states and 135182 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 11:46:22,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:46:22,621 INFO L93 Difference]: Finished difference Result 306294 states and 517139 transitions. [2023-12-20 11:46:22,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:46:22,621 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 152 [2023-12-20 11:46:22,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:46:23,467 INFO L225 Difference]: With dead ends: 306294 [2023-12-20 11:46:23,468 INFO L226 Difference]: Without dead ends: 227585 [2023-12-20 11:46:23,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:46:23,734 INFO L413 NwaCegarLoop]: 4408 mSDtfsCounter, 5393 mSDsluCounter, 17334 mSDsCounter, 0 mSdLazyCounter, 3693 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5410 SdHoareTripleChecker+Valid, 21742 SdHoareTripleChecker+Invalid, 3760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 11:46:23,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5410 Valid, 21742 Invalid, 3760 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 3693 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 11:46:23,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227585 states. [2023-12-20 11:46:30,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227585 to 159376. [2023-12-20 11:46:30,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159376 states, 146541 states have (on average 1.5966794276004668) internal successors, (233979), 147056 states have internal predecessors, (233979), 9243 states have call successors, (9243), 3079 states have call predecessors, (9243), 3590 states have return successors, (29436), 9752 states have call predecessors, (29436), 9241 states have call successors, (29436) [2023-12-20 11:46:31,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159376 states to 159376 states and 272658 transitions. [2023-12-20 11:46:31,398 INFO L78 Accepts]: Start accepts. Automaton has 159376 states and 272658 transitions. Word has length 152 [2023-12-20 11:46:31,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:46:31,398 INFO L495 AbstractCegarLoop]: Abstraction has 159376 states and 272658 transitions. [2023-12-20 11:46:31,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 11:46:31,398 INFO L276 IsEmpty]: Start isEmpty. Operand 159376 states and 272658 transitions. [2023-12-20 11:46:31,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-20 11:46:31,461 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:46:31,464 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:46:31,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 11:46:31,464 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:46:31,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:46:31,465 INFO L85 PathProgramCache]: Analyzing trace with hash 83726730, now seen corresponding path program 1 times [2023-12-20 11:46:31,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:46:31,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41328489] [2023-12-20 11:46:31,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:46:31,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:46:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:46:31,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:46:31,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:46:31,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 11:46:31,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:46:31,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 11:46:31,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:46:31,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-20 11:46:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:46:31,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-20 11:46:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:46:31,660 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 11:46:31,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:46:31,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41328489] [2023-12-20 11:46:31,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41328489] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:46:31,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:46:31,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:46:31,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119397655] [2023-12-20 11:46:31,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:46:31,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:46:31,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:46:31,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:46:31,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:46:31,662 INFO L87 Difference]: Start difference. First operand 159376 states and 272658 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 11:46:45,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:46:45,327 INFO L93 Difference]: Finished difference Result 602037 states and 1042009 transitions. [2023-12-20 11:46:45,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:46:45,328 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 152 [2023-12-20 11:46:45,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:46:47,840 INFO L225 Difference]: With dead ends: 602037 [2023-12-20 11:46:47,841 INFO L226 Difference]: Without dead ends: 444799 [2023-12-20 11:46:48,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:46:48,452 INFO L413 NwaCegarLoop]: 4408 mSDtfsCounter, 5551 mSDsluCounter, 17334 mSDsCounter, 0 mSdLazyCounter, 3197 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5581 SdHoareTripleChecker+Valid, 21742 SdHoareTripleChecker+Invalid, 3265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 11:46:48,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5581 Valid, 21742 Invalid, 3265 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [68 Valid, 3197 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 11:46:48,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444799 states. [2023-12-20 11:47:01,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444799 to 316433. [2023-12-20 11:47:02,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316433 states, 291310 states have (on average 1.595430984174934) internal successors, (464765), 292337 states have internal predecessors, (464765), 17947 states have call successors, (17947), 6151 states have call predecessors, (17947), 7174 states have return successors, (78018), 18968 states have call predecessors, (78018), 17945 states have call successors, (78018) [2023-12-20 11:47:04,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316433 states to 316433 states and 560730 transitions. [2023-12-20 11:47:04,361 INFO L78 Accepts]: Start accepts. Automaton has 316433 states and 560730 transitions. Word has length 152 [2023-12-20 11:47:04,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:47:04,361 INFO L495 AbstractCegarLoop]: Abstraction has 316433 states and 560730 transitions. [2023-12-20 11:47:04,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 11:47:04,362 INFO L276 IsEmpty]: Start isEmpty. Operand 316433 states and 560730 transitions. [2023-12-20 11:47:04,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-20 11:47:04,488 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:47:04,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:47:04,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 11:47:04,488 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:47:04,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:47:04,488 INFO L85 PathProgramCache]: Analyzing trace with hash 2012658956, now seen corresponding path program 1 times [2023-12-20 11:47:04,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:47:04,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060383403] [2023-12-20 11:47:04,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:47:04,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:47:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:47:04,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:47:04,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:47:04,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 11:47:04,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:47:04,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 11:47:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:47:04,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-20 11:47:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:47:04,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-20 11:47:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:47:04,905 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 11:47:04,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:47:04,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060383403] [2023-12-20 11:47:04,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060383403] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:47:04,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:47:04,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:47:04,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472650855] [2023-12-20 11:47:04,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:47:04,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:47:04,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:47:04,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:47:04,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:47:04,907 INFO L87 Difference]: Start difference. First operand 316433 states and 560730 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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)