/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/Problem05_label45+token_ring.08.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-18 22:22:45,119 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-18 22:22:45,190 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-18 22:22:45,194 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-18 22:22:45,194 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-18 22:22:45,219 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-18 22:22:45,219 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-18 22:22:45,219 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-18 22:22:45,220 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-18 22:22:45,223 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-18 22:22:45,223 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-18 22:22:45,223 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-18 22:22:45,223 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-18 22:22:45,224 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-18 22:22:45,225 INFO L153 SettingsManager]: * Use SBE=true [2023-12-18 22:22:45,225 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-18 22:22:45,225 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-18 22:22:45,225 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-18 22:22:45,225 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-18 22:22:45,226 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-18 22:22:45,226 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-18 22:22:45,227 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-18 22:22:45,227 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-18 22:22:45,227 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-18 22:22:45,227 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-18 22:22:45,227 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-18 22:22:45,227 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-18 22:22:45,228 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-18 22:22:45,228 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-18 22:22:45,228 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-18 22:22:45,229 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-18 22:22:45,229 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-18 22:22:45,229 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 22:22:45,229 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-18 22:22:45,229 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-18 22:22:45,230 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-18 22:22:45,230 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-18 22:22:45,230 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-18 22:22:45,230 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-18 22:22:45,230 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-18 22:22:45,230 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-18 22:22:45,231 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-18 22:22:45,231 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-18 22:22:45,231 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-18 22:22:45,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-18 22:22:45,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-18 22:22:45,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-18 22:22:45,442 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-18 22:22:45,442 INFO L274 PluginConnector]: CDTParser initialized [2023-12-18 22:22:45,443 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label45+token_ring.08.cil-2.c [2023-12-18 22:22:46,486 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-18 22:22:46,941 INFO L384 CDTParser]: Found 1 translation units. [2023-12-18 22:22:46,942 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label45+token_ring.08.cil-2.c [2023-12-18 22:22:46,994 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae7afeaa2/b34b2e8d592a4dc99725d1dbb9036e62/FLAGb4315ee23 [2023-12-18 22:22:47,057 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae7afeaa2/b34b2e8d592a4dc99725d1dbb9036e62 [2023-12-18 22:22:47,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-18 22:22:47,060 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-18 22:22:47,063 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-18 22:22:47,063 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-18 22:22:47,066 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-18 22:22:47,067 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:22:47" (1/1) ... [2023-12-18 22:22:47,067 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21334720 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:22:47, skipping insertion in model container [2023-12-18 22:22:47,068 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:22:47" (1/1) ... [2023-12-18 22:22:47,241 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-18 22:22:48,351 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_label45+token_ring.08.cil-2.c[380323,380336] [2023-12-18 22:22:48,377 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label45+token_ring.08.cil-2.c[383339,383352] [2023-12-18 22:22:48,552 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 22:22:48,566 INFO L202 MainTranslator]: Completed pre-run [2023-12-18 22:22:49,124 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_label45+token_ring.08.cil-2.c[380323,380336] [2023-12-18 22:22:49,127 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_label45+token_ring.08.cil-2.c[383339,383352] [2023-12-18 22:22:49,189 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 22:22:49,230 INFO L206 MainTranslator]: Completed translation [2023-12-18 22:22:49,231 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:22:49 WrapperNode [2023-12-18 22:22:49,231 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-18 22:22:49,232 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-18 22:22:49,232 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-18 22:22:49,232 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-18 22:22:49,236 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:22:49" (1/1) ... [2023-12-18 22:22:49,305 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:22:49" (1/1) ... [2023-12-18 22:22:49,512 INFO L138 Inliner]: procedures = 60, calls = 66, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 12999 [2023-12-18 22:22:49,513 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-18 22:22:49,514 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-18 22:22:49,514 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-18 22:22:49,514 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-18 22:22:49,608 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:22:49" (1/1) ... [2023-12-18 22:22:49,609 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:22:49" (1/1) ... [2023-12-18 22:22:49,659 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:22:49" (1/1) ... [2023-12-18 22:22:49,728 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-18 22:22:49,728 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:22:49" (1/1) ... [2023-12-18 22:22:49,728 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:22:49" (1/1) ... [2023-12-18 22:22:49,864 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:22:49" (1/1) ... [2023-12-18 22:22:49,896 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:22:49" (1/1) ... [2023-12-18 22:22:49,918 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:22:49" (1/1) ... [2023-12-18 22:22:49,937 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:22:49" (1/1) ... [2023-12-18 22:22:49,979 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-18 22:22:49,981 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-18 22:22:49,981 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-18 22:22:49,981 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-18 22:22:49,982 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:22:49" (1/1) ... [2023-12-18 22:22:49,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 22:22:49,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:22:50,003 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-18 22:22:50,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-18 22:22:50,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-18 22:22:50,029 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-18 22:22:50,030 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-18 22:22:50,030 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-18 22:22:50,031 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-18 22:22:50,031 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-18 22:22:50,031 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-18 22:22:50,031 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-18 22:22:50,031 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-18 22:22:50,031 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-18 22:22:50,031 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-18 22:22:50,031 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-18 22:22:50,031 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-18 22:22:50,031 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-18 22:22:50,031 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-18 22:22:50,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-18 22:22:50,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-18 22:22:50,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-18 22:22:50,140 INFO L241 CfgBuilder]: Building ICFG [2023-12-18 22:22:50,141 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-18 22:22:55,461 INFO L282 CfgBuilder]: Performing block encoding [2023-12-18 22:22:55,530 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-18 22:22:55,530 INFO L309 CfgBuilder]: Removed 12 assume(true) statements. [2023-12-18 22:22:55,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:22:55 BoogieIcfgContainer [2023-12-18 22:22:55,531 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-18 22:22:55,532 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-18 22:22:55,532 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-18 22:22:55,535 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-18 22:22:55,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 10:22:47" (1/3) ... [2023-12-18 22:22:55,535 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ac3d69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:22:55, skipping insertion in model container [2023-12-18 22:22:55,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:22:49" (2/3) ... [2023-12-18 22:22:55,536 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ac3d69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:22:55, skipping insertion in model container [2023-12-18 22:22:55,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:22:55" (3/3) ... [2023-12-18 22:22:55,537 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.08.cil-2.c [2023-12-18 22:22:55,548 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-18 22:22:55,549 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-18 22:22:55,604 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-18 22:22:55,609 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;@6e63786e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-18 22:22:55,609 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-18 22:22:55,619 INFO L276 IsEmpty]: Start isEmpty. Operand has 2387 states, 2353 states have (on average 1.87972800679983) internal successors, (4423), 2358 states have internal predecessors, (4423), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-18 22:22:55,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-18 22:22:55,630 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:22:55,631 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] [2023-12-18 22:22:55,631 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:22:55,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:22:55,635 INFO L85 PathProgramCache]: Analyzing trace with hash 947459073, now seen corresponding path program 1 times [2023-12-18 22:22:55,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:22:55,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127239264] [2023-12-18 22:22:55,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:22:55,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:22:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:22:55,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:22:55,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:22:56,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-18 22:22:56,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:22:56,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:22:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:22:56,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-18 22:22:56,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:22:56,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-18 22:22:56,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:22:56,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:22:56,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:22:56,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127239264] [2023-12-18 22:22:56,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127239264] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:22:56,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:22:56,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 22:22:56,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36483326] [2023-12-18 22:22:56,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:22:56,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 22:22:56,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:22:56,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 22:22:56,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-18 22:22:56,211 INFO L87 Difference]: Start difference. First operand has 2387 states, 2353 states have (on average 1.87972800679983) internal successors, (4423), 2358 states have internal predecessors, (4423), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:22:57,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:22:57,431 INFO L93 Difference]: Finished difference Result 4859 states and 9094 transitions. [2023-12-18 22:22:57,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 22:22:57,434 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 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 122 [2023-12-18 22:22:57,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:22:57,457 INFO L225 Difference]: With dead ends: 4859 [2023-12-18 22:22:57,457 INFO L226 Difference]: Without dead ends: 2472 [2023-12-18 22:22:57,468 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 [2023-12-18 22:22:57,472 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 709 mSDsluCounter, 12134 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 16326 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-18 22:22:57,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 16326 Invalid, 811 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-18 22:22:57,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2023-12-18 22:22:57,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 2382. [2023-12-18 22:22:57,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 2350 states have (on average 1.8429787234042554) internal successors, (4331), 2353 states have internal predecessors, (4331), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-18 22:22:57,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 4377 transitions. [2023-12-18 22:22:57,596 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 4377 transitions. Word has length 122 [2023-12-18 22:22:57,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:22:57,597 INFO L495 AbstractCegarLoop]: Abstraction has 2382 states and 4377 transitions. [2023-12-18 22:22:57,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:22:57,598 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 4377 transitions. [2023-12-18 22:22:57,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-18 22:22:57,604 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:22:57,604 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] [2023-12-18 22:22:57,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-18 22:22:57,605 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:22:57,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:22:57,605 INFO L85 PathProgramCache]: Analyzing trace with hash -981473153, now seen corresponding path program 1 times [2023-12-18 22:22:57,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:22:57,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110074490] [2023-12-18 22:22:57,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:22:57,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:22:57,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:22:57,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:22:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:22:57,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-18 22:22:57,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:22:57,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:22:57,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:22:57,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-18 22:22:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:22:57,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-18 22:22:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:22:57,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:22:57,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:22:57,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110074490] [2023-12-18 22:22:57,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110074490] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:22:57,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:22:57,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 22:22:57,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927969835] [2023-12-18 22:22:57,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:22:57,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 22:22:57,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:22:57,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 22:22:57,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-18 22:22:57,943 INFO L87 Difference]: Start difference. First operand 2382 states and 4377 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:22:59,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:22:59,720 INFO L93 Difference]: Finished difference Result 3067 states and 5511 transitions. [2023-12-18 22:22:59,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-18 22:22:59,721 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 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 122 [2023-12-18 22:22:59,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:22:59,731 INFO L225 Difference]: With dead ends: 3067 [2023-12-18 22:22:59,731 INFO L226 Difference]: Without dead ends: 2820 [2023-12-18 22:22:59,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:22:59,733 INFO L413 NwaCegarLoop]: 4165 mSDtfsCounter, 5014 mSDsluCounter, 12483 mSDsCounter, 0 mSdLazyCounter, 1627 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5029 SdHoareTripleChecker+Valid, 16648 SdHoareTripleChecker+Invalid, 1727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-18 22:22:59,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5029 Valid, 16648 Invalid, 1727 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [100 Valid, 1627 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-18 22:22:59,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2820 states. [2023-12-18 22:22:59,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2820 to 2639. [2023-12-18 22:22:59,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2639 states, 2583 states have (on average 1.8246225319396052) internal successors, (4713), 2587 states have internal predecessors, (4713), 41 states have call successors, (41), 13 states have call predecessors, (41), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2023-12-18 22:22:59,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2639 states to 2639 states and 4796 transitions. [2023-12-18 22:22:59,791 INFO L78 Accepts]: Start accepts. Automaton has 2639 states and 4796 transitions. Word has length 122 [2023-12-18 22:22:59,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:22:59,791 INFO L495 AbstractCegarLoop]: Abstraction has 2639 states and 4796 transitions. [2023-12-18 22:22:59,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:22:59,791 INFO L276 IsEmpty]: Start isEmpty. Operand 2639 states and 4796 transitions. [2023-12-18 22:22:59,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-18 22:22:59,793 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:22:59,793 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] [2023-12-18 22:22:59,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-18 22:22:59,793 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:22:59,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:22:59,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1257398465, now seen corresponding path program 1 times [2023-12-18 22:22:59,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:22:59,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070459882] [2023-12-18 22:22:59,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:22:59,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:22:59,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:22:59,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:22:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:22:59,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-18 22:22:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:22:59,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:22:59,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:22:59,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-18 22:22:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:22:59,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-18 22:22:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:22:59,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:23:00,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:23:00,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070459882] [2023-12-18 22:23:00,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070459882] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:23:00,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:23:00,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:23:00,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25726378] [2023-12-18 22:23:00,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:23:00,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:23:00,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:23:00,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:23:00,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:23:00,002 INFO L87 Difference]: Start difference. First operand 2639 states and 4796 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:23:02,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:23:02,365 INFO L93 Difference]: Finished difference Result 3682 states and 6521 transitions. [2023-12-18 22:23:02,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:23:02,366 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 122 [2023-12-18 22:23:02,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:23:02,375 INFO L225 Difference]: With dead ends: 3682 [2023-12-18 22:23:02,375 INFO L226 Difference]: Without dead ends: 3178 [2023-12-18 22:23:02,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:23:02,378 INFO L413 NwaCegarLoop]: 4322 mSDtfsCounter, 5033 mSDsluCounter, 17024 mSDsCounter, 0 mSdLazyCounter, 2653 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5048 SdHoareTripleChecker+Valid, 21346 SdHoareTripleChecker+Invalid, 2710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-18 22:23:02,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5048 Valid, 21346 Invalid, 2710 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [57 Valid, 2653 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-18 22:23:02,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3178 states. [2023-12-18 22:23:02,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3178 to 2877. [2023-12-18 22:23:02,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2877 states, 2797 states have (on average 1.8080085806220951) internal successors, (5057), 2802 states have internal predecessors, (5057), 58 states have call successors, (58), 19 states have call predecessors, (58), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2023-12-18 22:23:02,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2877 states to 2877 states and 5176 transitions. [2023-12-18 22:23:02,439 INFO L78 Accepts]: Start accepts. Automaton has 2877 states and 5176 transitions. Word has length 122 [2023-12-18 22:23:02,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:23:02,440 INFO L495 AbstractCegarLoop]: Abstraction has 2877 states and 5176 transitions. [2023-12-18 22:23:02,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:23:02,440 INFO L276 IsEmpty]: Start isEmpty. Operand 2877 states and 5176 transitions. [2023-12-18 22:23:02,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-18 22:23:02,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:23:02,441 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] [2023-12-18 22:23:02,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-18 22:23:02,441 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:23:02,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:23:02,442 INFO L85 PathProgramCache]: Analyzing trace with hash 131895549, now seen corresponding path program 1 times [2023-12-18 22:23:02,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:23:02,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088616959] [2023-12-18 22:23:02,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:23:02,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:23:02,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:02,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:23:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:02,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-18 22:23:02,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:02,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:23:02,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:02,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-18 22:23:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:02,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-18 22:23:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:02,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:23:02,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:23:02,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088616959] [2023-12-18 22:23:02,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088616959] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:23:02,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:23:02,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:23:02,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427580240] [2023-12-18 22:23:02,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:23:02,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:23:02,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:23:02,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:23:02,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:23:02,606 INFO L87 Difference]: Start difference. First operand 2877 states and 5176 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:23:04,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:23:04,663 INFO L93 Difference]: Finished difference Result 4583 states and 7993 transitions. [2023-12-18 22:23:04,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:23:04,664 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 122 [2023-12-18 22:23:04,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:23:04,678 INFO L225 Difference]: With dead ends: 4583 [2023-12-18 22:23:04,678 INFO L226 Difference]: Without dead ends: 3841 [2023-12-18 22:23:04,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:23:04,687 INFO L413 NwaCegarLoop]: 4174 mSDtfsCounter, 5113 mSDsluCounter, 16625 mSDsCounter, 0 mSdLazyCounter, 2196 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5128 SdHoareTripleChecker+Valid, 20799 SdHoareTripleChecker+Invalid, 2287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-18 22:23:04,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5128 Valid, 20799 Invalid, 2287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2196 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-18 22:23:04,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3841 states. [2023-12-18 22:23:04,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3841 to 3354. [2023-12-18 22:23:04,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3354 states, 3226 states have (on average 1.7811531308121513) internal successors, (5746), 3233 states have internal predecessors, (5746), 92 states have call successors, (92), 31 states have call predecessors, (92), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2023-12-18 22:23:04,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3354 states to 3354 states and 5941 transitions. [2023-12-18 22:23:04,798 INFO L78 Accepts]: Start accepts. Automaton has 3354 states and 5941 transitions. Word has length 122 [2023-12-18 22:23:04,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:23:04,798 INFO L495 AbstractCegarLoop]: Abstraction has 3354 states and 5941 transitions. [2023-12-18 22:23:04,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:23:04,798 INFO L276 IsEmpty]: Start isEmpty. Operand 3354 states and 5941 transitions. [2023-12-18 22:23:04,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-18 22:23:04,801 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:23:04,801 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] [2023-12-18 22:23:04,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-18 22:23:04,801 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:23:04,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:23:04,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1901498497, now seen corresponding path program 1 times [2023-12-18 22:23:04,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:23:04,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805577523] [2023-12-18 22:23:04,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:23:04,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:23:04,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:04,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:23:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:04,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-18 22:23:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:04,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:23:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:04,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-18 22:23:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:04,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-18 22:23:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:04,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:23:04,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:23:04,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805577523] [2023-12-18 22:23:04,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805577523] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:23:04,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:23:05,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:23:05,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511699280] [2023-12-18 22:23:05,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:23:05,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:23:05,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:23:05,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:23:05,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:23:05,006 INFO L87 Difference]: Start difference. First operand 3354 states and 5941 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:23:06,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:23:06,307 INFO L93 Difference]: Finished difference Result 5048 states and 8749 transitions. [2023-12-18 22:23:06,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 22:23:06,307 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 122 [2023-12-18 22:23:06,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:23:06,320 INFO L225 Difference]: With dead ends: 5048 [2023-12-18 22:23:06,320 INFO L226 Difference]: Without dead ends: 3829 [2023-12-18 22:23:06,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:23:06,325 INFO L413 NwaCegarLoop]: 4152 mSDtfsCounter, 4742 mSDsluCounter, 16424 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4758 SdHoareTripleChecker+Valid, 20576 SdHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:23:06,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4758 Valid, 20576 Invalid, 1406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-18 22:23:06,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3829 states. [2023-12-18 22:23:06,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3829 to 3354. [2023-12-18 22:23:06,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3354 states, 3226 states have (on average 1.7796032238065715) internal successors, (5741), 3233 states have internal predecessors, (5741), 92 states have call successors, (92), 31 states have call predecessors, (92), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2023-12-18 22:23:06,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3354 states to 3354 states and 5936 transitions. [2023-12-18 22:23:06,403 INFO L78 Accepts]: Start accepts. Automaton has 3354 states and 5936 transitions. Word has length 122 [2023-12-18 22:23:06,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:23:06,403 INFO L495 AbstractCegarLoop]: Abstraction has 3354 states and 5936 transitions. [2023-12-18 22:23:06,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:23:06,403 INFO L276 IsEmpty]: Start isEmpty. Operand 3354 states and 5936 transitions. [2023-12-18 22:23:06,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-18 22:23:06,405 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:23:06,405 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:23:06,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-18 22:23:06,405 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:23:06,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:23:06,405 INFO L85 PathProgramCache]: Analyzing trace with hash 526760125, now seen corresponding path program 1 times [2023-12-18 22:23:06,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:23:06,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874011187] [2023-12-18 22:23:06,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:23:06,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:23:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:06,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:23:06,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:06,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-18 22:23:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:06,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:23:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:06,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-18 22:23:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:06,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-18 22:23:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:06,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:23:06,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:23:06,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874011187] [2023-12-18 22:23:06,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874011187] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:23:06,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:23:06,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:23:06,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970185218] [2023-12-18 22:23:06,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:23:06,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:23:06,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:23:06,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:23:06,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:23:06,541 INFO L87 Difference]: Start difference. First operand 3354 states and 5936 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:23:07,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:23:07,639 INFO L93 Difference]: Finished difference Result 5037 states and 8713 transitions. [2023-12-18 22:23:07,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 22:23:07,640 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 122 [2023-12-18 22:23:07,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:23:07,653 INFO L225 Difference]: With dead ends: 5037 [2023-12-18 22:23:07,653 INFO L226 Difference]: Without dead ends: 3818 [2023-12-18 22:23:07,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:23:07,659 INFO L413 NwaCegarLoop]: 4152 mSDtfsCounter, 4848 mSDsluCounter, 12339 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4864 SdHoareTripleChecker+Valid, 16491 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-18 22:23:07,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4864 Valid, 16491 Invalid, 1275 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-18 22:23:07,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3818 states. [2023-12-18 22:23:07,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3818 to 3354. [2023-12-18 22:23:07,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3354 states, 3226 states have (on average 1.778053316800992) internal successors, (5736), 3233 states have internal predecessors, (5736), 92 states have call successors, (92), 31 states have call predecessors, (92), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2023-12-18 22:23:07,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3354 states to 3354 states and 5931 transitions. [2023-12-18 22:23:07,768 INFO L78 Accepts]: Start accepts. Automaton has 3354 states and 5931 transitions. Word has length 122 [2023-12-18 22:23:07,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:23:07,769 INFO L495 AbstractCegarLoop]: Abstraction has 3354 states and 5931 transitions. [2023-12-18 22:23:07,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:23:07,769 INFO L276 IsEmpty]: Start isEmpty. Operand 3354 states and 5931 transitions. [2023-12-18 22:23:07,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-18 22:23:07,771 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:23:07,771 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] [2023-12-18 22:23:07,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-18 22:23:07,771 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:23:07,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:23:07,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1870710405, now seen corresponding path program 1 times [2023-12-18 22:23:07,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:23:07,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695208724] [2023-12-18 22:23:07,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:23:07,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:23:07,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:07,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:23:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:07,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-18 22:23:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:07,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:23:07,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:07,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-18 22:23:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:07,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-18 22:23:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:07,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:23:07,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:23:07,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695208724] [2023-12-18 22:23:07,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695208724] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:23:07,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:23:07,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:23:07,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259385143] [2023-12-18 22:23:07,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:23:07,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:23:07,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:23:07,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:23:07,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:23:07,963 INFO L87 Difference]: Start difference. First operand 3354 states and 5931 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:23:10,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:23:10,282 INFO L93 Difference]: Finished difference Result 6295 states and 10728 transitions. [2023-12-18 22:23:10,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:23:10,283 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 122 [2023-12-18 22:23:10,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:23:10,303 INFO L225 Difference]: With dead ends: 6295 [2023-12-18 22:23:10,303 INFO L226 Difference]: Without dead ends: 5076 [2023-12-18 22:23:10,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:23:10,311 INFO L413 NwaCegarLoop]: 4320 mSDtfsCounter, 5016 mSDsluCounter, 17024 mSDsCounter, 0 mSdLazyCounter, 2574 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5031 SdHoareTripleChecker+Valid, 21344 SdHoareTripleChecker+Invalid, 2633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-18 22:23:10,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5031 Valid, 21344 Invalid, 2633 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 2574 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-18 22:23:10,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5076 states. [2023-12-18 22:23:10,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5076 to 4323. [2023-12-18 22:23:10,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4323 states, 4099 states have (on average 1.738716760185411) internal successors, (7127), 4110 states have internal predecessors, (7127), 160 states have call successors, (160), 55 states have call predecessors, (160), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2023-12-18 22:23:10,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4323 states to 4323 states and 7480 transitions. [2023-12-18 22:23:10,434 INFO L78 Accepts]: Start accepts. Automaton has 4323 states and 7480 transitions. Word has length 122 [2023-12-18 22:23:10,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:23:10,435 INFO L495 AbstractCegarLoop]: Abstraction has 4323 states and 7480 transitions. [2023-12-18 22:23:10,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:23:10,435 INFO L276 IsEmpty]: Start isEmpty. Operand 4323 states and 7480 transitions. [2023-12-18 22:23:10,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-18 22:23:10,437 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:23:10,437 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] [2023-12-18 22:23:10,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-18 22:23:10,437 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:23:10,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:23:10,438 INFO L85 PathProgramCache]: Analyzing trace with hash -839669507, now seen corresponding path program 1 times [2023-12-18 22:23:10,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:23:10,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641441943] [2023-12-18 22:23:10,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:23:10,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:23:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:10,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:23:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:10,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-18 22:23:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:10,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:23:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:10,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-18 22:23:10,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:10,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-18 22:23:10,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:10,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:23:10,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:23:10,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641441943] [2023-12-18 22:23:10,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641441943] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:23:10,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:23:10,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:23:10,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134131686] [2023-12-18 22:23:10,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:23:10,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:23:10,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:23:10,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:23:10,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:23:10,605 INFO L87 Difference]: Start difference. First operand 4323 states and 7480 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:23:11,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:23:11,753 INFO L93 Difference]: Finished difference Result 7271 states and 12318 transitions. [2023-12-18 22:23:11,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 22:23:11,754 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 122 [2023-12-18 22:23:11,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:23:11,771 INFO L225 Difference]: With dead ends: 7271 [2023-12-18 22:23:11,772 INFO L226 Difference]: Without dead ends: 5083 [2023-12-18 22:23:11,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:23:11,779 INFO L413 NwaCegarLoop]: 4152 mSDtfsCounter, 4738 mSDsluCounter, 16424 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4754 SdHoareTripleChecker+Valid, 20576 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-18 22:23:11,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4754 Valid, 20576 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-18 22:23:11,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5083 states. [2023-12-18 22:23:11,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5083 to 4323. [2023-12-18 22:23:11,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4323 states, 4099 states have (on average 1.7365211027079777) internal successors, (7118), 4110 states have internal predecessors, (7118), 160 states have call successors, (160), 55 states have call predecessors, (160), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2023-12-18 22:23:11,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4323 states to 4323 states and 7471 transitions. [2023-12-18 22:23:11,943 INFO L78 Accepts]: Start accepts. Automaton has 4323 states and 7471 transitions. Word has length 122 [2023-12-18 22:23:11,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:23:11,944 INFO L495 AbstractCegarLoop]: Abstraction has 4323 states and 7471 transitions. [2023-12-18 22:23:11,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:23:11,944 INFO L276 IsEmpty]: Start isEmpty. Operand 4323 states and 7471 transitions. [2023-12-18 22:23:11,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-18 22:23:11,946 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:23:11,946 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] [2023-12-18 22:23:11,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-18 22:23:11,947 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:23:11,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:23:11,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1548894523, now seen corresponding path program 1 times [2023-12-18 22:23:11,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:23:11,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242509195] [2023-12-18 22:23:11,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:23:11,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:23:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:12,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:23:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:12,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-18 22:23:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:12,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:23:12,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:12,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-18 22:23:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:12,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-18 22:23:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:12,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:23:12,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:23:12,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242509195] [2023-12-18 22:23:12,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242509195] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:23:12,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:23:12,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:23:12,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678026452] [2023-12-18 22:23:12,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:23:12,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:23:12,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:23:12,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:23:12,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:23:12,106 INFO L87 Difference]: Start difference. First operand 4323 states and 7471 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:23:14,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:23:14,278 INFO L93 Difference]: Finished difference Result 9746 states and 16269 transitions. [2023-12-18 22:23:14,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:23:14,279 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 122 [2023-12-18 22:23:14,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:23:14,300 INFO L225 Difference]: With dead ends: 9746 [2023-12-18 22:23:14,301 INFO L226 Difference]: Without dead ends: 7558 [2023-12-18 22:23:14,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:23:14,310 INFO L413 NwaCegarLoop]: 4320 mSDtfsCounter, 5008 mSDsluCounter, 17024 mSDsCounter, 0 mSdLazyCounter, 2536 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5023 SdHoareTripleChecker+Valid, 21344 SdHoareTripleChecker+Invalid, 2595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-18 22:23:14,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5023 Valid, 21344 Invalid, 2595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2536 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-18 22:23:14,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7558 states. [2023-12-18 22:23:14,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7558 to 6271. [2023-12-18 22:23:14,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6271 states, 5855 states have (on average 1.690862510674637) internal successors, (9900), 5874 states have internal predecessors, (9900), 296 states have call successors, (296), 103 states have call predecessors, (296), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2023-12-18 22:23:14,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6271 states to 6271 states and 10587 transitions. [2023-12-18 22:23:14,496 INFO L78 Accepts]: Start accepts. Automaton has 6271 states and 10587 transitions. Word has length 122 [2023-12-18 22:23:14,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:23:14,497 INFO L495 AbstractCegarLoop]: Abstraction has 6271 states and 10587 transitions. [2023-12-18 22:23:14,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:23:14,497 INFO L276 IsEmpty]: Start isEmpty. Operand 6271 states and 10587 transitions. [2023-12-18 22:23:14,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-18 22:23:14,500 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:23:14,501 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] [2023-12-18 22:23:14,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-18 22:23:14,501 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:23:14,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:23:14,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1145001667, now seen corresponding path program 1 times [2023-12-18 22:23:14,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:23:14,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011002076] [2023-12-18 22:23:14,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:23:14,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:23:14,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:14,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:23:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:14,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-18 22:23:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:14,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:23:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:14,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-18 22:23:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:14,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-18 22:23:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:14,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:23:14,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:23:14,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011002076] [2023-12-18 22:23:14,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011002076] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:23:14,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:23:14,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:23:14,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388928385] [2023-12-18 22:23:14,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:23:14,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:23:14,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:23:14,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:23:14,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:23:14,665 INFO L87 Difference]: Start difference. First operand 6271 states and 10587 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:23:17,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:23:17,395 INFO L93 Difference]: Finished difference Result 18328 states and 30157 transitions. [2023-12-18 22:23:17,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:23:17,396 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 122 [2023-12-18 22:23:17,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:23:17,438 INFO L225 Difference]: With dead ends: 18328 [2023-12-18 22:23:17,438 INFO L226 Difference]: Without dead ends: 14192 [2023-12-18 22:23:17,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:23:17,455 INFO L413 NwaCegarLoop]: 4318 mSDtfsCounter, 5301 mSDsluCounter, 17019 mSDsCounter, 0 mSdLazyCounter, 2513 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5325 SdHoareTripleChecker+Valid, 21337 SdHoareTripleChecker+Invalid, 2575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:23:17,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5325 Valid, 21337 Invalid, 2575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2513 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-18 22:23:17,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14192 states. [2023-12-18 22:23:17,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14192 to 10148. [2023-12-18 22:23:17,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10148 states, 9364 states have (on average 1.6516445963263562) internal successors, (15466), 9399 states have internal predecessors, (15466), 552 states have call successors, (552), 199 states have call predecessors, (552), 230 states have return successors, (825), 581 states have call predecessors, (825), 550 states have call successors, (825) [2023-12-18 22:23:17,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10148 states to 10148 states and 16843 transitions. [2023-12-18 22:23:17,794 INFO L78 Accepts]: Start accepts. Automaton has 10148 states and 16843 transitions. Word has length 122 [2023-12-18 22:23:17,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:23:17,794 INFO L495 AbstractCegarLoop]: Abstraction has 10148 states and 16843 transitions. [2023-12-18 22:23:17,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:23:17,794 INFO L276 IsEmpty]: Start isEmpty. Operand 10148 states and 16843 transitions. [2023-12-18 22:23:17,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-18 22:23:17,800 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:23:17,800 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] [2023-12-18 22:23:17,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-18 22:23:17,801 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:23:17,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:23:17,801 INFO L85 PathProgramCache]: Analyzing trace with hash 2093234427, now seen corresponding path program 1 times [2023-12-18 22:23:17,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:23:17,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609292253] [2023-12-18 22:23:17,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:23:17,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:23:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:17,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:23:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:17,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-18 22:23:17,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:17,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:23:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:17,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-18 22:23:17,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:17,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-18 22:23:17,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:17,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:23:17,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:23:17,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609292253] [2023-12-18 22:23:17,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609292253] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:23:17,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:23:17,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:23:17,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463700628] [2023-12-18 22:23:17,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:23:17,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:23:17,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:23:17,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:23:17,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:23:17,955 INFO L87 Difference]: Start difference. First operand 10148 states and 16843 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:23:20,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:23:20,628 INFO L93 Difference]: Finished difference Result 33379 states and 54727 transitions. [2023-12-18 22:23:20,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:23:20,629 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 122 [2023-12-18 22:23:20,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:23:20,706 INFO L225 Difference]: With dead ends: 33379 [2023-12-18 22:23:20,706 INFO L226 Difference]: Without dead ends: 25366 [2023-12-18 22:23:20,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:23:20,736 INFO L413 NwaCegarLoop]: 4200 mSDtfsCounter, 5136 mSDsluCounter, 16647 mSDsCounter, 0 mSdLazyCounter, 2644 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5150 SdHoareTripleChecker+Valid, 20847 SdHoareTripleChecker+Invalid, 2731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-18 22:23:20,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5150 Valid, 20847 Invalid, 2731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2644 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-18 22:23:20,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25366 states. [2023-12-18 22:23:21,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25366 to 17581. [2023-12-18 22:23:21,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17581 states, 16077 states have (on average 1.620451576786714) internal successors, (26052), 16144 states have internal predecessors, (26052), 1048 states have call successors, (1048), 391 states have call predecessors, (1048), 454 states have return successors, (1839), 1109 states have call predecessors, (1839), 1046 states have call successors, (1839) [2023-12-18 22:23:21,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17581 states to 17581 states and 28939 transitions. [2023-12-18 22:23:21,638 INFO L78 Accepts]: Start accepts. Automaton has 17581 states and 28939 transitions. Word has length 122 [2023-12-18 22:23:21,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:23:21,638 INFO L495 AbstractCegarLoop]: Abstraction has 17581 states and 28939 transitions. [2023-12-18 22:23:21,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:23:21,638 INFO L276 IsEmpty]: Start isEmpty. Operand 17581 states and 28939 transitions. [2023-12-18 22:23:21,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-18 22:23:21,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:23:21,647 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] [2023-12-18 22:23:21,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-18 22:23:21,647 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:23:21,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:23:21,647 INFO L85 PathProgramCache]: Analyzing trace with hash -850347651, now seen corresponding path program 1 times [2023-12-18 22:23:21,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:23:21,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985376498] [2023-12-18 22:23:21,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:23:21,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:23:21,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:21,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:23:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:21,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-18 22:23:21,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:21,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:23:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:21,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-18 22:23:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:21,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-18 22:23:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:21,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:23:21,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:23:21,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985376498] [2023-12-18 22:23:21,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985376498] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:23:21,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:23:21,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:23:21,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113591829] [2023-12-18 22:23:21,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:23:21,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:23:21,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:23:21,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:23:21,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:23:21,784 INFO L87 Difference]: Start difference. First operand 17581 states and 28939 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:23:24,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:23:24,814 INFO L93 Difference]: Finished difference Result 62074 states and 101957 transitions. [2023-12-18 22:23:24,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:23:24,814 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 122 [2023-12-18 22:23:24,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:23:24,959 INFO L225 Difference]: With dead ends: 62074 [2023-12-18 22:23:24,959 INFO L226 Difference]: Without dead ends: 46628 [2023-12-18 22:23:25,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:23:25,014 INFO L413 NwaCegarLoop]: 4318 mSDtfsCounter, 5235 mSDsluCounter, 17019 mSDsCounter, 0 mSdLazyCounter, 2482 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5259 SdHoareTripleChecker+Valid, 21337 SdHoareTripleChecker+Invalid, 2544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-18 22:23:25,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5259 Valid, 21337 Invalid, 2544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2482 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-18 22:23:25,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46628 states. [2023-12-18 22:23:26,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46628 to 32766. [2023-12-18 22:23:26,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32766 states, 29854 states have (on average 1.603202250954646) internal successors, (47862), 29985 states have internal predecessors, (47862), 2008 states have call successors, (2008), 775 states have call predecessors, (2008), 902 states have return successors, (4321), 2133 states have call predecessors, (4321), 2006 states have call successors, (4321) [2023-12-18 22:23:26,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32766 states to 32766 states and 54191 transitions. [2023-12-18 22:23:26,397 INFO L78 Accepts]: Start accepts. Automaton has 32766 states and 54191 transitions. Word has length 122 [2023-12-18 22:23:26,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:23:26,397 INFO L495 AbstractCegarLoop]: Abstraction has 32766 states and 54191 transitions. [2023-12-18 22:23:26,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:23:26,397 INFO L276 IsEmpty]: Start isEmpty. Operand 32766 states and 54191 transitions. [2023-12-18 22:23:26,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-18 22:23:26,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:23:26,419 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] [2023-12-18 22:23:26,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-18 22:23:26,419 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:23:26,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:23:26,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1825644731, now seen corresponding path program 1 times [2023-12-18 22:23:26,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:23:26,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751281453] [2023-12-18 22:23:26,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:23:26,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:23:26,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:26,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:23:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:26,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-18 22:23:26,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:26,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:23:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:26,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-18 22:23:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:26,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-18 22:23:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:26,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:23:26,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:23:26,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751281453] [2023-12-18 22:23:26,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751281453] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:23:26,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:23:26,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:23:26,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746376802] [2023-12-18 22:23:26,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:23:26,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:23:26,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:23:26,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:23:26,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:23:26,552 INFO L87 Difference]: Start difference. First operand 32766 states and 54191 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:23:30,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:23:30,687 INFO L93 Difference]: Finished difference Result 117735 states and 195799 transitions. [2023-12-18 22:23:30,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:23:30,688 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 122 [2023-12-18 22:23:30,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:23:30,953 INFO L225 Difference]: With dead ends: 117735 [2023-12-18 22:23:30,953 INFO L226 Difference]: Without dead ends: 87104 [2023-12-18 22:23:31,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:23:31,012 INFO L413 NwaCegarLoop]: 4318 mSDtfsCounter, 5044 mSDsluCounter, 17019 mSDsCounter, 0 mSdLazyCounter, 2770 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5058 SdHoareTripleChecker+Valid, 21337 SdHoareTripleChecker+Invalid, 2831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-18 22:23:31,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5058 Valid, 21337 Invalid, 2831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2770 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-18 22:23:31,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87104 states. [2023-12-18 22:23:33,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87104 to 63264. [2023-12-18 22:23:33,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63264 states, 57600 states have (on average 1.5948958333333334) internal successors, (91866), 57859 states have internal predecessors, (91866), 3864 states have call successors, (3864), 1543 states have call predecessors, (3864), 1798 states have return successors, (10679), 4117 states have call predecessors, (10679), 3862 states have call successors, (10679) [2023-12-18 22:23:33,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63264 states to 63264 states and 106409 transitions. [2023-12-18 22:23:33,662 INFO L78 Accepts]: Start accepts. Automaton has 63264 states and 106409 transitions. Word has length 122 [2023-12-18 22:23:33,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:23:33,662 INFO L495 AbstractCegarLoop]: Abstraction has 63264 states and 106409 transitions. [2023-12-18 22:23:33,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:23:33,662 INFO L276 IsEmpty]: Start isEmpty. Operand 63264 states and 106409 transitions. [2023-12-18 22:23:33,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-18 22:23:33,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:23:33,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:23:33,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-18 22:23:33,892 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:23:33,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:23:33,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1797144441, now seen corresponding path program 1 times [2023-12-18 22:23:33,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:23:33,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416622668] [2023-12-18 22:23:33,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:23:33,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:23:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:33,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:23:33,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:33,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-18 22:23:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:34,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:23:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:34,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-18 22:23:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:34,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-18 22:23:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:34,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:23:34,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:23:34,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416622668] [2023-12-18 22:23:34,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416622668] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:23:34,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:23:34,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:23:34,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964110766] [2023-12-18 22:23:34,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:23:34,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:23:34,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:23:34,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:23:34,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:23:34,050 INFO L87 Difference]: Start difference. First operand 63264 states and 106409 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:23:39,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:23:39,884 INFO L93 Difference]: Finished difference Result 228935 states and 388815 transitions. [2023-12-18 22:23:39,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:23:39,884 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 122 [2023-12-18 22:23:39,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:23:40,629 INFO L225 Difference]: With dead ends: 228935 [2023-12-18 22:23:40,629 INFO L226 Difference]: Without dead ends: 167806 [2023-12-18 22:23:40,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:23:40,764 INFO L413 NwaCegarLoop]: 4318 mSDtfsCounter, 5124 mSDsluCounter, 17019 mSDsCounter, 0 mSdLazyCounter, 2442 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5148 SdHoareTripleChecker+Valid, 21337 SdHoareTripleChecker+Invalid, 2504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-18 22:23:40,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5148 Valid, 21337 Invalid, 2504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2442 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-18 22:23:40,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167806 states. [2023-12-18 22:23:45,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167806 to 124257. [2023-12-18 22:23:45,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124257 states, 113217 states have (on average 1.5909624879655881) internal successors, (180124), 113732 states have internal predecessors, (180124), 7448 states have call successors, (7448), 3079 states have call predecessors, (7448), 3590 states have return successors, (27641), 7957 states have call predecessors, (27641), 7446 states have call successors, (27641) [2023-12-18 22:23:46,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124257 states to 124257 states and 215213 transitions. [2023-12-18 22:23:46,205 INFO L78 Accepts]: Start accepts. Automaton has 124257 states and 215213 transitions. Word has length 122 [2023-12-18 22:23:46,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:23:46,205 INFO L495 AbstractCegarLoop]: Abstraction has 124257 states and 215213 transitions. [2023-12-18 22:23:46,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:23:46,205 INFO L276 IsEmpty]: Start isEmpty. Operand 124257 states and 215213 transitions. [2023-12-18 22:23:46,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-18 22:23:46,276 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:23:46,276 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] [2023-12-18 22:23:46,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-18 22:23:46,276 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:23:46,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:23:46,277 INFO L85 PathProgramCache]: Analyzing trace with hash -143437573, now seen corresponding path program 1 times [2023-12-18 22:23:46,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:23:46,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159006425] [2023-12-18 22:23:46,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:23:46,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:23:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:46,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:23:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:46,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-18 22:23:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:46,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:23:46,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:46,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-18 22:23:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:46,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-18 22:23:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:23:46,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:23:46,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:23:46,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159006425] [2023-12-18 22:23:46,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159006425] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:23:46,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:23:46,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:23:46,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349305374] [2023-12-18 22:23:46,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:23:46,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:23:46,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:23:46,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:23:46,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:23:46,499 INFO L87 Difference]: Start difference. First operand 124257 states and 215213 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:23:56,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:23:56,186 INFO L93 Difference]: Finished difference Result 447494 states and 785685 transitions. [2023-12-18 22:23:56,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:23:56,187 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 122 [2023-12-18 22:23:56,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:23:57,708 INFO L225 Difference]: With dead ends: 447494 [2023-12-18 22:23:57,709 INFO L226 Difference]: Without dead ends: 325372 [2023-12-18 22:23:57,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:23:57,972 INFO L413 NwaCegarLoop]: 4318 mSDtfsCounter, 5024 mSDsluCounter, 17019 mSDsCounter, 0 mSdLazyCounter, 2652 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5038 SdHoareTripleChecker+Valid, 21337 SdHoareTripleChecker+Invalid, 2713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-18 22:23:57,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5038 Valid, 21337 Invalid, 2713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2652 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-18 22:23:58,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325372 states. [2023-12-18 22:24:07,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325372 to 246242. [2023-12-18 22:24:08,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246242 states, 224706 states have (on average 1.5894101626124804) internal successors, (357150), 225733 states have internal predecessors, (357150), 14360 states have call successors, (14360), 6151 states have call predecessors, (14360), 7174 states have return successors, (74431), 15381 states have call predecessors, (74431), 14358 states have call successors, (74431) [2023-12-18 22:24:09,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246242 states to 246242 states and 445941 transitions. [2023-12-18 22:24:09,600 INFO L78 Accepts]: Start accepts. Automaton has 246242 states and 445941 transitions. Word has length 122 [2023-12-18 22:24:09,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:24:09,601 INFO L495 AbstractCegarLoop]: Abstraction has 246242 states and 445941 transitions. [2023-12-18 22:24:09,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:24:09,601 INFO L276 IsEmpty]: Start isEmpty. Operand 246242 states and 445941 transitions. [2023-12-18 22:24:09,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-18 22:24:09,710 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:24:09,710 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] [2023-12-18 22:24:09,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-18 22:24:09,711 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:24:09,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:24:09,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1733625657, now seen corresponding path program 1 times [2023-12-18 22:24:09,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:24:09,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137548211] [2023-12-18 22:24:09,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:24:09,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:24:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:24:09,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:24:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:24:09,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-18 22:24:09,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:24:09,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:24:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:24:09,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-18 22:24:09,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:24:09,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-18 22:24:09,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:24:10,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:24:10,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:24:10,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137548211] [2023-12-18 22:24:10,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137548211] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:24:10,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:24:10,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:24:10,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333585754] [2023-12-18 22:24:10,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:24:10,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:24:10,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:24:10,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:24:10,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:24:10,008 INFO L87 Difference]: Start difference. First operand 246242 states and 445941 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:24:27,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:24:27,126 INFO L93 Difference]: Finished difference Result 876933 states and 1618603 transitions. [2023-12-18 22:24:27,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:24:27,126 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 122 [2023-12-18 22:24:27,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:24:30,451 INFO L225 Difference]: With dead ends: 876933 [2023-12-18 22:24:30,451 INFO L226 Difference]: Without dead ends: 632826 [2023-12-18 22:24:31,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:24:31,380 INFO L413 NwaCegarLoop]: 4318 mSDtfsCounter, 5052 mSDsluCounter, 17019 mSDsCounter, 0 mSdLazyCounter, 2416 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5076 SdHoareTripleChecker+Valid, 21337 SdHoareTripleChecker+Invalid, 2478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-18 22:24:31,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5076 Valid, 21337 Invalid, 2478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2416 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-18 22:24:31,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632826 states.