/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_label43+token_ring.12.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 17:34:53,978 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 17:34:54,045 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 17:34:54,050 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 17:34:54,050 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 17:34:54,076 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 17:34:54,077 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 17:34:54,077 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 17:34:54,077 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 17:34:54,078 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 17:34:54,078 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 17:34:54,078 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 17:34:54,078 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 17:34:54,079 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 17:34:54,079 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 17:34:54,079 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 17:34:54,079 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 17:34:54,080 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 17:34:54,082 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 17:34:54,083 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 17:34:54,086 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 17:34:54,086 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 17:34:54,087 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 17:34:54,088 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 17:34:54,088 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 17:34:54,088 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 17:34:54,088 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 17:34:54,088 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 17:34:54,089 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 17:34:54,089 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 17:34:54,090 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 17:34:54,090 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 17:34:54,090 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:34:54,090 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 17:34:54,090 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 17:34:54,090 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 17:34:54,091 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 17:34:54,091 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 17:34:54,091 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 17:34:54,091 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 17:34:54,091 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 17:34:54,091 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 17:34:54,091 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 17:34:54,091 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 17:34:54,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 17:34:54,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 17:34:54,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 17:34:54,272 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 17:34:54,273 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 17:34:54,273 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label43+token_ring.12.cil-1.c [2023-12-15 17:34:55,340 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 17:34:55,807 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 17:34:55,808 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.12.cil-1.c [2023-12-15 17:34:55,854 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c89fc447d/e82c1031a507456e933eb79886f665b4/FLAG86cb92868 [2023-12-15 17:34:55,869 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c89fc447d/e82c1031a507456e933eb79886f665b4 [2023-12-15 17:34:55,871 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 17:34:55,872 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 17:34:55,874 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 17:34:55,874 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 17:34:55,878 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 17:34:55,878 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:34:55" (1/1) ... [2023-12-15 17:34:55,879 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20274205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:34:55, skipping insertion in model container [2023-12-15 17:34:55,879 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:34:55" (1/1) ... [2023-12-15 17:34:56,059 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 17:34:57,557 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_label43+token_ring.12.cil-1.c[381679,381692] [2023-12-15 17:34:57,578 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_label43+token_ring.12.cil-1.c[383339,383352] [2023-12-15 17:34:57,797 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:34:57,807 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 17:34:58,351 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_label43+token_ring.12.cil-1.c[381679,381692] [2023-12-15 17:34:58,356 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_label43+token_ring.12.cil-1.c[383339,383352] [2023-12-15 17:34:58,388 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:34:58,448 INFO L206 MainTranslator]: Completed translation [2023-12-15 17:34:58,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:34:58 WrapperNode [2023-12-15 17:34:58,450 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 17:34:58,451 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 17:34:58,451 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 17:34:58,451 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 17:34:58,456 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:34:58" (1/1) ... [2023-12-15 17:34:58,543 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:34:58" (1/1) ... [2023-12-15 17:34:58,833 INFO L138 Inliner]: procedures = 68, calls = 78, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 13239 [2023-12-15 17:34:58,833 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 17:34:58,834 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 17:34:58,834 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 17:34:58,834 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 17:34:58,842 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:34:58" (1/1) ... [2023-12-15 17:34:58,842 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:34:58" (1/1) ... [2023-12-15 17:34:58,898 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:34:58" (1/1) ... [2023-12-15 17:34:59,072 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]. [2023-12-15 17:34:59,072 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:34:58" (1/1) ... [2023-12-15 17:34:59,072 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:34:58" (1/1) ... [2023-12-15 17:34:59,203 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:34:58" (1/1) ... [2023-12-15 17:34:59,312 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:34:58" (1/1) ... [2023-12-15 17:34:59,334 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:34:58" (1/1) ... [2023-12-15 17:34:59,352 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:34:58" (1/1) ... [2023-12-15 17:34:59,409 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 17:34:59,410 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 17:34:59,411 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 17:34:59,411 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 17:34:59,412 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:34:58" (1/1) ... [2023-12-15 17:34:59,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:34:59,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:34:59,442 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) [2023-12-15 17:34:59,496 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 [2023-12-15 17:34:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 17:34:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-15 17:34:59,503 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-15 17:34:59,504 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-15 17:34:59,504 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-15 17:34:59,504 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-15 17:34:59,504 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-15 17:34:59,504 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-15 17:34:59,504 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-15 17:34:59,505 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-15 17:34:59,505 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-15 17:34:59,505 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-15 17:34:59,505 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-15 17:34:59,505 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-15 17:34:59,505 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-15 17:34:59,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 17:34:59,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 17:34:59,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 17:34:59,632 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 17:34:59,634 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 17:35:05,361 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 17:35:05,548 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 17:35:05,549 INFO L309 CfgBuilder]: Removed 16 assume(true) statements. [2023-12-15 17:35:05,549 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:35:05 BoogieIcfgContainer [2023-12-15 17:35:05,549 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 17:35:05,562 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 17:35:05,563 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 17:35:05,565 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 17:35:05,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 05:34:55" (1/3) ... [2023-12-15 17:35:05,566 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@decb6e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:35:05, skipping insertion in model container [2023-12-15 17:35:05,566 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:34:58" (2/3) ... [2023-12-15 17:35:05,566 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@decb6e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:35:05, skipping insertion in model container [2023-12-15 17:35:05,566 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:35:05" (3/3) ... [2023-12-15 17:35:05,567 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.12.cil-1.c [2023-12-15 17:35:05,580 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 17:35:05,580 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-15 17:35:05,669 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 17:35:05,675 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;@4a440f2c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 17:35:05,675 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-15 17:35:05,688 INFO L276 IsEmpty]: Start isEmpty. Operand has 2479 states, 2441 states have (on average 1.8758705448586646) internal successors, (4579), 2446 states have internal predecessors, (4579), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-15 17:35:05,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-15 17:35:05,702 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:35:05,702 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:35:05,703 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:35:05,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:35:05,706 INFO L85 PathProgramCache]: Analyzing trace with hash 255000413, now seen corresponding path program 1 times [2023-12-15 17:35:05,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:35:05,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136550545] [2023-12-15 17:35:05,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:05,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:35:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:05,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:35:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:06,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 17:35:06,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:06,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-15 17:35:06,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:06,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-15 17:35:06,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:06,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-15 17:35:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:06,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:35:06,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:35:06,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136550545] [2023-12-15 17:35:06,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136550545] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:35:06,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:35:06,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 17:35:06,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911422864] [2023-12-15 17:35:06,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:35:06,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 17:35:06,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:35:06,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 17:35:06,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 17:35:06,269 INFO L87 Difference]: Start difference. First operand has 2479 states, 2441 states have (on average 1.8758705448586646) internal successors, (4579), 2446 states have internal predecessors, (4579), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 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) [2023-12-15 17:35:08,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:35:08,057 INFO L93 Difference]: Finished difference Result 5083 states and 9494 transitions. [2023-12-15 17:35:08,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 17:35:08,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 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 162 [2023-12-15 17:35:08,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:35:08,076 INFO L225 Difference]: With dead ends: 5083 [2023-12-15 17:35:08,076 INFO L226 Difference]: Without dead ends: 2604 [2023-12-15 17:35:08,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 17:35:08,084 INFO L413 NwaCegarLoop]: 4268 mSDtfsCounter, 993 mSDsluCounter, 12222 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 16490 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 17:35:08,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1017 Valid, 16490 Invalid, 1131 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 17:35:08,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2023-12-15 17:35:08,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 2474. [2023-12-15 17:35:08,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2474 states, 2438 states have (on average 1.8371616078753077) internal successors, (4479), 2441 states have internal predecessors, (4479), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-15 17:35:08,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 4533 transitions. [2023-12-15 17:35:08,164 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 4533 transitions. Word has length 162 [2023-12-15 17:35:08,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:35:08,164 INFO L495 AbstractCegarLoop]: Abstraction has 2474 states and 4533 transitions. [2023-12-15 17:35:08,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 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) [2023-12-15 17:35:08,165 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 4533 transitions. [2023-12-15 17:35:08,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-15 17:35:08,168 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:35:08,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:35:08,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 17:35:08,168 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:35:08,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:35:08,169 INFO L85 PathProgramCache]: Analyzing trace with hash 2024472027, now seen corresponding path program 1 times [2023-12-15 17:35:08,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:35:08,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569402050] [2023-12-15 17:35:08,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:08,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:35:08,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:08,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:35:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:08,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 17:35:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:08,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-15 17:35:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:08,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-15 17:35:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:08,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-15 17:35:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:08,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:35:08,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:35:08,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569402050] [2023-12-15 17:35:08,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569402050] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:35:08,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:35:08,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:35:08,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236886179] [2023-12-15 17:35:08,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:35:08,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:35:08,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:35:08,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:35:08,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:35:08,393 INFO L87 Difference]: Start difference. First operand 2474 states and 4533 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-15 17:35:10,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:35:10,658 INFO L93 Difference]: Finished difference Result 2986 states and 5400 transitions. [2023-12-15 17:35:10,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 17:35:10,659 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-15 17:35:10,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:35:10,670 INFO L225 Difference]: With dead ends: 2986 [2023-12-15 17:35:10,670 INFO L226 Difference]: Without dead ends: 2646 [2023-12-15 17:35:10,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-12-15 17:35:10,673 INFO L413 NwaCegarLoop]: 4264 mSDtfsCounter, 1153 mSDsluCounter, 20651 mSDsCounter, 0 mSdLazyCounter, 2093 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 24915 SdHoareTripleChecker+Invalid, 2156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 17:35:10,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1180 Valid, 24915 Invalid, 2156 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 2093 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 17:35:10,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2023-12-15 17:35:10,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 2476. [2023-12-15 17:35:10,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2476 states, 2440 states have (on average 1.8360655737704918) internal successors, (4480), 2443 states have internal predecessors, (4480), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-15 17:35:10,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2476 states to 2476 states and 4534 transitions. [2023-12-15 17:35:10,738 INFO L78 Accepts]: Start accepts. Automaton has 2476 states and 4534 transitions. Word has length 162 [2023-12-15 17:35:10,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:35:10,740 INFO L495 AbstractCegarLoop]: Abstraction has 2476 states and 4534 transitions. [2023-12-15 17:35:10,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-15 17:35:10,740 INFO L276 IsEmpty]: Start isEmpty. Operand 2476 states and 4534 transitions. [2023-12-15 17:35:10,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-15 17:35:10,743 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:35:10,743 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:35:10,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 17:35:10,744 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:35:10,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:35:10,747 INFO L85 PathProgramCache]: Analyzing trace with hash 932380055, now seen corresponding path program 1 times [2023-12-15 17:35:10,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:35:10,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156843426] [2023-12-15 17:35:10,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:10,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:35:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:10,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:35:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:10,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 17:35:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:10,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-15 17:35:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:11,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-15 17:35:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:11,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-15 17:35:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:11,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:35:11,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:35:11,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156843426] [2023-12-15 17:35:11,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156843426] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:35:11,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:35:11,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 17:35:11,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552215553] [2023-12-15 17:35:11,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:35:11,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 17:35:11,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:35:11,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 17:35:11,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:35:11,026 INFO L87 Difference]: Start difference. First operand 2476 states and 4534 transitions. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 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) [2023-12-15 17:35:13,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:35:13,700 INFO L93 Difference]: Finished difference Result 3433 states and 6132 transitions. [2023-12-15 17:35:13,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 17:35:13,701 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 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 162 [2023-12-15 17:35:13,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:35:13,711 INFO L225 Difference]: With dead ends: 3433 [2023-12-15 17:35:13,711 INFO L226 Difference]: Without dead ends: 3096 [2023-12-15 17:35:13,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:35:13,715 INFO L413 NwaCegarLoop]: 4283 mSDtfsCounter, 5449 mSDsluCounter, 12796 mSDsCounter, 0 mSdLazyCounter, 2352 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5468 SdHoareTripleChecker+Valid, 17079 SdHoareTripleChecker+Invalid, 2468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:35:13,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5468 Valid, 17079 Invalid, 2468 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [116 Valid, 2352 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-15 17:35:13,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3096 states. [2023-12-15 17:35:13,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3096 to 2831. [2023-12-15 17:35:13,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2831 states, 2767 states have (on average 1.8142392482833394) internal successors, (5020), 2771 states have internal predecessors, (5020), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2023-12-15 17:35:13,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2831 states to 2831 states and 5119 transitions. [2023-12-15 17:35:13,803 INFO L78 Accepts]: Start accepts. Automaton has 2831 states and 5119 transitions. Word has length 162 [2023-12-15 17:35:13,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:35:13,804 INFO L495 AbstractCegarLoop]: Abstraction has 2831 states and 5119 transitions. [2023-12-15 17:35:13,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 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) [2023-12-15 17:35:13,804 INFO L276 IsEmpty]: Start isEmpty. Operand 2831 states and 5119 transitions. [2023-12-15 17:35:13,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-15 17:35:13,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:35:13,806 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:35:13,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 17:35:13,806 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:35:13,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:35:13,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1272988329, now seen corresponding path program 1 times [2023-12-15 17:35:13,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:35:13,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6084042] [2023-12-15 17:35:13,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:13,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:35:13,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:13,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:35:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:13,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 17:35:13,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:14,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-15 17:35:14,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:14,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-15 17:35:14,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:14,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-15 17:35:14,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:14,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:35:14,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:35:14,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6084042] [2023-12-15 17:35:14,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6084042] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:35:14,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:35:14,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:35:14,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751237868] [2023-12-15 17:35:14,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:35:14,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:35:14,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:35:14,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:35:14,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:35:14,088 INFO L87 Difference]: Start difference. First operand 2831 states and 5119 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-15 17:35:17,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:35:17,867 INFO L93 Difference]: Finished difference Result 4294 states and 7564 transitions. [2023-12-15 17:35:17,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 17:35:17,868 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-15 17:35:17,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:35:17,883 INFO L225 Difference]: With dead ends: 4294 [2023-12-15 17:35:17,884 INFO L226 Difference]: Without dead ends: 3602 [2023-12-15 17:35:17,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 17:35:17,892 INFO L413 NwaCegarLoop]: 4441 mSDtfsCounter, 5484 mSDsluCounter, 17441 mSDsCounter, 0 mSdLazyCounter, 3740 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5503 SdHoareTripleChecker+Valid, 21882 SdHoareTripleChecker+Invalid, 3805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-15 17:35:17,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5503 Valid, 21882 Invalid, 3805 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 3740 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-15 17:35:17,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3602 states. [2023-12-15 17:35:17,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3602 to 3159. [2023-12-15 17:35:17,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3159 states, 3067 states have (on average 1.7952396478643626) internal successors, (5506), 3072 states have internal predecessors, (5506), 70 states have call successors, (70), 19 states have call predecessors, (70), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2023-12-15 17:35:17,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3159 states to 3159 states and 5649 transitions. [2023-12-15 17:35:17,956 INFO L78 Accepts]: Start accepts. Automaton has 3159 states and 5649 transitions. Word has length 162 [2023-12-15 17:35:17,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:35:17,956 INFO L495 AbstractCegarLoop]: Abstraction has 3159 states and 5649 transitions. [2023-12-15 17:35:17,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-15 17:35:17,956 INFO L276 IsEmpty]: Start isEmpty. Operand 3159 states and 5649 transitions. [2023-12-15 17:35:17,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-15 17:35:17,958 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:35:17,958 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:35:17,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 17:35:17,958 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:35:17,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:35:17,958 INFO L85 PathProgramCache]: Analyzing trace with hash -862377963, now seen corresponding path program 1 times [2023-12-15 17:35:17,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:35:17,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596514711] [2023-12-15 17:35:17,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:17,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:35:17,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:18,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:35:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:18,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 17:35:18,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:18,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-15 17:35:18,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:18,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-15 17:35:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:18,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-15 17:35:18,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:18,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:35:18,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:35:18,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596514711] [2023-12-15 17:35:18,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596514711] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:35:18,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:35:18,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:35:18,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469053158] [2023-12-15 17:35:18,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:35:18,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:35:18,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:35:18,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:35:18,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:35:18,157 INFO L87 Difference]: Start difference. First operand 3159 states and 5649 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-15 17:35:21,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:35:21,028 INFO L93 Difference]: Finished difference Result 5557 states and 9650 transitions. [2023-12-15 17:35:21,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 17:35:21,029 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-15 17:35:21,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:35:21,043 INFO L225 Difference]: With dead ends: 5557 [2023-12-15 17:35:21,043 INFO L226 Difference]: Without dead ends: 4537 [2023-12-15 17:35:21,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 17:35:21,047 INFO L413 NwaCegarLoop]: 4241 mSDtfsCounter, 5596 mSDsluCounter, 16898 mSDsCounter, 0 mSdLazyCounter, 3099 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5615 SdHoareTripleChecker+Valid, 21139 SdHoareTripleChecker+Invalid, 3206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 3099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:35:21,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5615 Valid, 21139 Invalid, 3206 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [107 Valid, 3099 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-15 17:35:21,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4537 states. [2023-12-15 17:35:21,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4537 to 3816. [2023-12-15 17:35:21,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3816 states, 3668 states have (on average 1.7663576881134133) internal successors, (6479), 3675 states have internal predecessors, (6479), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2023-12-15 17:35:21,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3816 states to 3816 states and 6714 transitions. [2023-12-15 17:35:21,133 INFO L78 Accepts]: Start accepts. Automaton has 3816 states and 6714 transitions. Word has length 162 [2023-12-15 17:35:21,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:35:21,133 INFO L495 AbstractCegarLoop]: Abstraction has 3816 states and 6714 transitions. [2023-12-15 17:35:21,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-15 17:35:21,133 INFO L276 IsEmpty]: Start isEmpty. Operand 3816 states and 6714 transitions. [2023-12-15 17:35:21,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-15 17:35:21,135 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:35:21,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:35:21,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 17:35:21,135 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:35:21,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:35:21,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1644719511, now seen corresponding path program 1 times [2023-12-15 17:35:21,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:35:21,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237961653] [2023-12-15 17:35:21,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:21,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:35:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:21,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:35:21,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:21,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 17:35:21,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:21,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-15 17:35:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:21,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-15 17:35:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:21,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-15 17:35:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:21,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:35:21,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:35:21,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237961653] [2023-12-15 17:35:21,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237961653] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:35:21,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:35:21,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:35:21,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185871717] [2023-12-15 17:35:21,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:35:21,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:35:21,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:35:21,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:35:21,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:35:21,368 INFO L87 Difference]: Start difference. First operand 3816 states and 6714 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-15 17:35:23,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:35:23,199 INFO L93 Difference]: Finished difference Result 6202 states and 10706 transitions. [2023-12-15 17:35:23,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:35:23,199 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-15 17:35:23,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:35:23,213 INFO L225 Difference]: With dead ends: 6202 [2023-12-15 17:35:23,213 INFO L226 Difference]: Without dead ends: 4525 [2023-12-15 17:35:23,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:35:23,218 INFO L413 NwaCegarLoop]: 4219 mSDtfsCounter, 5053 mSDsluCounter, 16637 mSDsCounter, 0 mSdLazyCounter, 1908 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5073 SdHoareTripleChecker+Valid, 20856 SdHoareTripleChecker+Invalid, 1977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 17:35:23,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5073 Valid, 20856 Invalid, 1977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1908 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 17:35:23,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4525 states. [2023-12-15 17:35:23,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4525 to 3816. [2023-12-15 17:35:23,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3816 states, 3668 states have (on average 1.7649945474372954) internal successors, (6474), 3675 states have internal predecessors, (6474), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2023-12-15 17:35:23,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3816 states to 3816 states and 6709 transitions. [2023-12-15 17:35:23,319 INFO L78 Accepts]: Start accepts. Automaton has 3816 states and 6709 transitions. Word has length 162 [2023-12-15 17:35:23,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:35:23,319 INFO L495 AbstractCegarLoop]: Abstraction has 3816 states and 6709 transitions. [2023-12-15 17:35:23,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-15 17:35:23,320 INFO L276 IsEmpty]: Start isEmpty. Operand 3816 states and 6709 transitions. [2023-12-15 17:35:23,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-15 17:35:23,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:35:23,322 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:35:23,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 17:35:23,322 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:35:23,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:35:23,322 INFO L85 PathProgramCache]: Analyzing trace with hash -491163691, now seen corresponding path program 1 times [2023-12-15 17:35:23,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:35:23,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675471905] [2023-12-15 17:35:23,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:23,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:35:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:23,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:35:23,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:23,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 17:35:23,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:23,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-15 17:35:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:23,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-15 17:35:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:23,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-15 17:35:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:23,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:35:23,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:35:23,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675471905] [2023-12-15 17:35:23,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675471905] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:35:23,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:35:23,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:35:23,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641120496] [2023-12-15 17:35:23,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:35:23,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:35:23,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:35:23,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:35:23,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:35:23,535 INFO L87 Difference]: Start difference. First operand 3816 states and 6709 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-15 17:35:25,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:35:25,432 INFO L93 Difference]: Finished difference Result 6191 states and 10670 transitions. [2023-12-15 17:35:25,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:35:25,433 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-15 17:35:25,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:35:25,445 INFO L225 Difference]: With dead ends: 6191 [2023-12-15 17:35:25,445 INFO L226 Difference]: Without dead ends: 4514 [2023-12-15 17:35:25,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:35:25,449 INFO L413 NwaCegarLoop]: 4219 mSDtfsCounter, 5050 mSDsluCounter, 16637 mSDsCounter, 0 mSdLazyCounter, 1884 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5070 SdHoareTripleChecker+Valid, 20856 SdHoareTripleChecker+Invalid, 1953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 17:35:25,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5070 Valid, 20856 Invalid, 1953 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [69 Valid, 1884 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 17:35:25,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4514 states. [2023-12-15 17:35:25,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4514 to 3816. [2023-12-15 17:35:25,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3816 states, 3668 states have (on average 1.7636314067611778) internal successors, (6469), 3675 states have internal predecessors, (6469), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2023-12-15 17:35:25,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3816 states to 3816 states and 6704 transitions. [2023-12-15 17:35:25,525 INFO L78 Accepts]: Start accepts. Automaton has 3816 states and 6704 transitions. Word has length 162 [2023-12-15 17:35:25,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:35:25,525 INFO L495 AbstractCegarLoop]: Abstraction has 3816 states and 6704 transitions. [2023-12-15 17:35:25,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-15 17:35:25,526 INFO L276 IsEmpty]: Start isEmpty. Operand 3816 states and 6704 transitions. [2023-12-15 17:35:25,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-15 17:35:25,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:35:25,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:35:25,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 17:35:25,528 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:35:25,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:35:25,528 INFO L85 PathProgramCache]: Analyzing trace with hash -73274989, now seen corresponding path program 1 times [2023-12-15 17:35:25,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:35:25,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387818170] [2023-12-15 17:35:25,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:25,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:35:25,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:25,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:35:25,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:25,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 17:35:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:25,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-15 17:35:25,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:25,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-15 17:35:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:25,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-15 17:35:25,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:25,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:35:25,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:35:25,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387818170] [2023-12-15 17:35:25,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387818170] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:35:25,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:35:25,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:35:25,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790157596] [2023-12-15 17:35:25,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:35:25,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:35:25,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:35:25,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:35:25,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:35:25,772 INFO L87 Difference]: Start difference. First operand 3816 states and 6704 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-15 17:35:29,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:35:29,051 INFO L93 Difference]: Finished difference Result 7961 states and 13549 transitions. [2023-12-15 17:35:29,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 17:35:29,051 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-15 17:35:29,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:35:29,065 INFO L225 Difference]: With dead ends: 7961 [2023-12-15 17:35:29,065 INFO L226 Difference]: Without dead ends: 6284 [2023-12-15 17:35:29,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 17:35:29,070 INFO L413 NwaCegarLoop]: 4439 mSDtfsCounter, 5467 mSDsluCounter, 17441 mSDsCounter, 0 mSdLazyCounter, 3661 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5486 SdHoareTripleChecker+Valid, 21880 SdHoareTripleChecker+Invalid, 3728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-15 17:35:29,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5486 Valid, 21880 Invalid, 3728 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 3661 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-15 17:35:29,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6284 states. [2023-12-15 17:35:29,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6284 to 5145. [2023-12-15 17:35:29,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5145 states, 4885 states have (on average 1.7252814738996929) internal successors, (8428), 4896 states have internal predecessors, (8428), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2023-12-15 17:35:29,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5145 states to 5145 states and 8853 transitions. [2023-12-15 17:35:29,188 INFO L78 Accepts]: Start accepts. Automaton has 5145 states and 8853 transitions. Word has length 162 [2023-12-15 17:35:29,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:35:29,188 INFO L495 AbstractCegarLoop]: Abstraction has 5145 states and 8853 transitions. [2023-12-15 17:35:29,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-15 17:35:29,188 INFO L276 IsEmpty]: Start isEmpty. Operand 5145 states and 8853 transitions. [2023-12-15 17:35:29,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-15 17:35:29,190 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:35:29,191 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:35:29,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 17:35:29,191 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:35:29,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:35:29,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1325678613, now seen corresponding path program 1 times [2023-12-15 17:35:29,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:35:29,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858888196] [2023-12-15 17:35:29,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:29,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:35:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:29,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:35:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:29,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 17:35:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:29,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-15 17:35:29,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:29,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-15 17:35:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:29,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-15 17:35:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:29,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:35:29,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:35:29,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858888196] [2023-12-15 17:35:29,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858888196] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:35:29,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:35:29,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:35:29,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241541158] [2023-12-15 17:35:29,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:35:29,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:35:29,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:35:29,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:35:29,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:35:29,367 INFO L87 Difference]: Start difference. First operand 5145 states and 8853 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-15 17:35:31,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:35:31,133 INFO L93 Difference]: Finished difference Result 9313 states and 15771 transitions. [2023-12-15 17:35:31,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:35:31,133 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-15 17:35:31,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:35:31,145 INFO L225 Difference]: With dead ends: 9313 [2023-12-15 17:35:31,146 INFO L226 Difference]: Without dead ends: 6307 [2023-12-15 17:35:31,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:35:31,151 INFO L413 NwaCegarLoop]: 4219 mSDtfsCounter, 5049 mSDsluCounter, 16637 mSDsCounter, 0 mSdLazyCounter, 1858 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5069 SdHoareTripleChecker+Valid, 20856 SdHoareTripleChecker+Invalid, 1927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 17:35:31,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5069 Valid, 20856 Invalid, 1927 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [69 Valid, 1858 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 17:35:31,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6307 states. [2023-12-15 17:35:31,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6307 to 5145. [2023-12-15 17:35:31,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5145 states, 4885 states have (on average 1.723439099283521) internal successors, (8419), 4896 states have internal predecessors, (8419), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2023-12-15 17:35:31,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5145 states to 5145 states and 8844 transitions. [2023-12-15 17:35:31,271 INFO L78 Accepts]: Start accepts. Automaton has 5145 states and 8844 transitions. Word has length 162 [2023-12-15 17:35:31,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:35:31,271 INFO L495 AbstractCegarLoop]: Abstraction has 5145 states and 8844 transitions. [2023-12-15 17:35:31,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-15 17:35:31,271 INFO L276 IsEmpty]: Start isEmpty. Operand 5145 states and 8844 transitions. [2023-12-15 17:35:31,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-15 17:35:31,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:35:31,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:35:31,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 17:35:31,274 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:35:31,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:35:31,275 INFO L85 PathProgramCache]: Analyzing trace with hash -291761837, now seen corresponding path program 1 times [2023-12-15 17:35:31,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:35:31,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220992606] [2023-12-15 17:35:31,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:31,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:35:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:31,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:35:31,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:31,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 17:35:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:31,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-15 17:35:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:31,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-15 17:35:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:31,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-15 17:35:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:31,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:35:31,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:35:31,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220992606] [2023-12-15 17:35:31,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220992606] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:35:31,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:35:31,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:35:31,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907558781] [2023-12-15 17:35:31,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:35:31,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:35:31,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:35:31,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:35:31,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:35:31,450 INFO L87 Difference]: Start difference. First operand 5145 states and 8844 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-15 17:35:34,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:35:34,266 INFO L93 Difference]: Finished difference Result 12796 states and 21418 transitions. [2023-12-15 17:35:34,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 17:35:34,267 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-15 17:35:34,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:35:34,294 INFO L225 Difference]: With dead ends: 12796 [2023-12-15 17:35:34,295 INFO L226 Difference]: Without dead ends: 9790 [2023-12-15 17:35:34,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 17:35:34,306 INFO L413 NwaCegarLoop]: 4439 mSDtfsCounter, 5459 mSDsluCounter, 17441 mSDsCounter, 0 mSdLazyCounter, 3623 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5478 SdHoareTripleChecker+Valid, 21880 SdHoareTripleChecker+Invalid, 3690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:35:34,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5478 Valid, 21880 Invalid, 3690 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 3623 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-15 17:35:34,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9790 states. [2023-12-15 17:35:34,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9790 to 7813. [2023-12-15 17:35:34,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7813 states, 7329 states have (on average 1.6833128666939554) internal successors, (12337), 7348 states have internal predecessors, (12337), 364 states have call successors, (364), 103 states have call predecessors, (364), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2023-12-15 17:35:34,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7813 states to 7813 states and 13160 transitions. [2023-12-15 17:35:34,540 INFO L78 Accepts]: Start accepts. Automaton has 7813 states and 13160 transitions. Word has length 162 [2023-12-15 17:35:34,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:35:34,540 INFO L495 AbstractCegarLoop]: Abstraction has 7813 states and 13160 transitions. [2023-12-15 17:35:34,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-15 17:35:34,540 INFO L276 IsEmpty]: Start isEmpty. Operand 7813 states and 13160 transitions. [2023-12-15 17:35:34,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-15 17:35:34,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:35:34,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:35:34,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 17:35:34,544 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:35:34,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:35:34,544 INFO L85 PathProgramCache]: Analyzing trace with hash 71704661, now seen corresponding path program 1 times [2023-12-15 17:35:34,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:35:34,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925014912] [2023-12-15 17:35:34,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:34,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:35:34,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:34,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:35:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:34,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 17:35:34,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:34,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-15 17:35:34,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:34,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-15 17:35:34,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:34,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-15 17:35:34,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:34,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:35:34,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:35:34,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925014912] [2023-12-15 17:35:34,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925014912] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:35:34,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:35:34,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:35:34,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69789906] [2023-12-15 17:35:34,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:35:34,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:35:34,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:35:34,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:35:34,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:35:34,718 INFO L87 Difference]: Start difference. First operand 7813 states and 13160 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-15 17:35:38,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:35:38,384 INFO L93 Difference]: Finished difference Result 22482 states and 37288 transitions. [2023-12-15 17:35:38,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 17:35:38,384 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-15 17:35:38,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:35:38,425 INFO L225 Difference]: With dead ends: 22482 [2023-12-15 17:35:38,425 INFO L226 Difference]: Without dead ends: 16808 [2023-12-15 17:35:38,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 17:35:38,444 INFO L413 NwaCegarLoop]: 4439 mSDtfsCounter, 5458 mSDsluCounter, 17441 mSDsCounter, 0 mSdLazyCounter, 3610 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5477 SdHoareTripleChecker+Valid, 21880 SdHoareTripleChecker+Invalid, 3677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-15 17:35:38,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5477 Valid, 21880 Invalid, 3677 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 3610 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-15 17:35:38,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16808 states. [2023-12-15 17:35:38,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16808 to 13162. [2023-12-15 17:35:38,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13162 states, 12230 states have (on average 1.6509403107113656) internal successors, (20191), 12265 states have internal predecessors, (20191), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2023-12-15 17:35:38,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13162 states to 13162 states and 21864 transitions. [2023-12-15 17:35:38,818 INFO L78 Accepts]: Start accepts. Automaton has 13162 states and 21864 transitions. Word has length 162 [2023-12-15 17:35:38,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:35:38,819 INFO L495 AbstractCegarLoop]: Abstraction has 13162 states and 21864 transitions. [2023-12-15 17:35:38,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-15 17:35:38,819 INFO L276 IsEmpty]: Start isEmpty. Operand 13162 states and 21864 transitions. [2023-12-15 17:35:38,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-15 17:35:38,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:35:38,827 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:35:38,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 17:35:38,827 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:35:38,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:35:38,827 INFO L85 PathProgramCache]: Analyzing trace with hash 360524051, now seen corresponding path program 1 times [2023-12-15 17:35:38,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:35:38,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383162934] [2023-12-15 17:35:38,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:38,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:35:38,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:38,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:35:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:38,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 17:35:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:39,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-15 17:35:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:39,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-15 17:35:39,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:39,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-15 17:35:39,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:39,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:35:39,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:35:39,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383162934] [2023-12-15 17:35:39,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383162934] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:35:39,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:35:39,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:35:39,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840366869] [2023-12-15 17:35:39,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:35:39,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:35:39,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:35:39,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:35:39,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:35:39,018 INFO L87 Difference]: Start difference. First operand 13162 states and 21864 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-15 17:35:42,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:35:42,672 INFO L93 Difference]: Finished difference Result 41853 states and 69218 transitions. [2023-12-15 17:35:42,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 17:35:42,673 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-15 17:35:42,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:35:42,755 INFO L225 Difference]: With dead ends: 41853 [2023-12-15 17:35:42,756 INFO L226 Difference]: Without dead ends: 30830 [2023-12-15 17:35:42,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 17:35:42,794 INFO L413 NwaCegarLoop]: 4241 mSDtfsCounter, 5557 mSDsluCounter, 16898 mSDsCounter, 0 mSdLazyCounter, 3005 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5576 SdHoareTripleChecker+Valid, 21139 SdHoareTripleChecker+Invalid, 3112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 3005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-15 17:35:42,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5576 Valid, 21139 Invalid, 3112 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [107 Valid, 3005 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-15 17:35:42,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30830 states. [2023-12-15 17:35:43,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30830 to 23891. [2023-12-15 17:35:43,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23891 states, 22063 states have (on average 1.6291982051398268) internal successors, (35945), 22130 states have internal predecessors, (35945), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2023-12-15 17:35:43,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23891 states to 23891 states and 39480 transitions. [2023-12-15 17:35:43,686 INFO L78 Accepts]: Start accepts. Automaton has 23891 states and 39480 transitions. Word has length 162 [2023-12-15 17:35:43,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:35:43,686 INFO L495 AbstractCegarLoop]: Abstraction has 23891 states and 39480 transitions. [2023-12-15 17:35:43,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-15 17:35:43,686 INFO L276 IsEmpty]: Start isEmpty. Operand 23891 states and 39480 transitions. [2023-12-15 17:35:43,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-15 17:35:43,698 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:35:43,698 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:35:43,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 17:35:43,699 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:35:43,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:35:43,699 INFO L85 PathProgramCache]: Analyzing trace with hash -184348523, now seen corresponding path program 1 times [2023-12-15 17:35:43,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:35:43,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055598122] [2023-12-15 17:35:43,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:43,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:35:43,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:43,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:35:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:43,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 17:35:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:43,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-15 17:35:43,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:43,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-15 17:35:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:43,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-15 17:35:43,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:43,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:35:43,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:35:43,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055598122] [2023-12-15 17:35:43,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055598122] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:35:43,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:35:43,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:35:43,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313919518] [2023-12-15 17:35:43,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:35:43,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:35:43,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:35:43,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:35:43,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:35:43,890 INFO L87 Difference]: Start difference. First operand 23891 states and 39480 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-15 17:35:45,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:35:45,894 INFO L93 Difference]: Finished difference Result 53013 states and 88342 transitions. [2023-12-15 17:35:45,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:35:45,895 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-15 17:35:45,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:35:45,976 INFO L225 Difference]: With dead ends: 53013 [2023-12-15 17:35:45,977 INFO L226 Difference]: Without dead ends: 31261 [2023-12-15 17:35:46,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:35:46,019 INFO L413 NwaCegarLoop]: 4219 mSDtfsCounter, 5209 mSDsluCounter, 12509 mSDsCounter, 0 mSdLazyCounter, 1636 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5229 SdHoareTripleChecker+Valid, 16728 SdHoareTripleChecker+Invalid, 1733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:35:46,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5229 Valid, 16728 Invalid, 1733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1636 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 17:35:46,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31261 states. [2023-12-15 17:35:46,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31261 to 23891. [2023-12-15 17:35:46,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23891 states, 22063 states have (on average 1.6262520962697729) internal successors, (35880), 22130 states have internal predecessors, (35880), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2023-12-15 17:35:46,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23891 states to 23891 states and 39415 transitions. [2023-12-15 17:35:46,770 INFO L78 Accepts]: Start accepts. Automaton has 23891 states and 39415 transitions. Word has length 162 [2023-12-15 17:35:46,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:35:46,770 INFO L495 AbstractCegarLoop]: Abstraction has 23891 states and 39415 transitions. [2023-12-15 17:35:46,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-15 17:35:46,770 INFO L276 IsEmpty]: Start isEmpty. Operand 23891 states and 39415 transitions. [2023-12-15 17:35:46,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-15 17:35:46,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:35:46,782 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:35:46,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 17:35:46,782 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:35:46,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:35:46,782 INFO L85 PathProgramCache]: Analyzing trace with hash 490811603, now seen corresponding path program 1 times [2023-12-15 17:35:46,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:35:46,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583545147] [2023-12-15 17:35:46,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:46,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:35:46,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:46,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:35:46,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:46,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 17:35:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:46,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-15 17:35:46,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:46,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-15 17:35:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:46,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-15 17:35:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:46,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:35:46,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:35:46,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583545147] [2023-12-15 17:35:46,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583545147] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:35:46,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:35:46,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:35:46,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833293255] [2023-12-15 17:35:46,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:35:46,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:35:46,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:35:46,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:35:46,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:35:46,993 INFO L87 Difference]: Start difference. First operand 23891 states and 39415 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-15 17:35:52,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:35:52,170 INFO L93 Difference]: Finished difference Result 90448 states and 149158 transitions. [2023-12-15 17:35:52,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 17:35:52,171 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-15 17:35:52,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:35:52,340 INFO L225 Difference]: With dead ends: 90448 [2023-12-15 17:35:52,340 INFO L226 Difference]: Without dead ends: 68696 [2023-12-15 17:35:52,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 17:35:52,386 INFO L413 NwaCegarLoop]: 4437 mSDtfsCounter, 5885 mSDsluCounter, 17436 mSDsCounter, 0 mSdLazyCounter, 3530 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5917 SdHoareTripleChecker+Valid, 21873 SdHoareTripleChecker+Invalid, 3600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 3530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-15 17:35:52,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5917 Valid, 21873 Invalid, 3600 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 3530 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-15 17:35:52,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68696 states. Received shutdown request... [2023-12-15 17:35:53,246 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 17:35:53,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68696 to 45414. [2023-12-15 17:35:53,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45414 states, 41858 states have (on average 1.6137894787137466) internal successors, (67550), 41989 states have internal predecessors, (67550), 2652 states have call successors, (2652), 775 states have call predecessors, (2652), 902 states have return successors, (4965), 2777 states have call predecessors, (4965), 2650 states have call successors, (4965) [2023-12-15 17:35:53,961 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-15 17:35:53,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 17:35:53,962 WARN L619 AbstractCegarLoop]: Verification canceled: while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). [2023-12-15 17:35:53,963 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-15 17:35:53,965 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:35:53,967 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 17:35:53,968 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 05:35:53 BoogieIcfgContainer [2023-12-15 17:35:53,968 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 17:35:53,969 INFO L158 Benchmark]: Toolchain (without parser) took 58096.22ms. Allocated memory was 317.7MB in the beginning and 2.5GB in the end (delta: 2.2GB). Free memory was 244.6MB in the beginning and 1.6GB in the end (delta: -1.3GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2023-12-15 17:35:53,969 INFO L158 Benchmark]: CDTParser took 1.00ms. Allocated memory is still 195.0MB. Free memory is still 148.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 17:35:53,969 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2576.15ms. Allocated memory is still 317.7MB. Free memory was 244.0MB in the beginning and 157.1MB in the end (delta: 87.0MB). Peak memory consumption was 167.7MB. Max. memory is 8.0GB. [2023-12-15 17:35:53,969 INFO L158 Benchmark]: Boogie Procedure Inliner took 382.08ms. Allocated memory was 317.7MB in the beginning and 527.4MB in the end (delta: 209.7MB). Free memory was 157.1MB in the beginning and 372.6MB in the end (delta: -215.5MB). Peak memory consumption was 58.7MB. Max. memory is 8.0GB. [2023-12-15 17:35:53,969 INFO L158 Benchmark]: Boogie Preprocessor took 575.91ms. Allocated memory is still 527.4MB. Free memory was 372.6MB in the beginning and 353.7MB in the end (delta: 18.9MB). Peak memory consumption was 68.7MB. Max. memory is 8.0GB. [2023-12-15 17:35:53,969 INFO L158 Benchmark]: RCFGBuilder took 6139.39ms. Allocated memory was 527.4MB in the beginning and 1.6GB in the end (delta: 1.0GB). Free memory was 353.7MB in the beginning and 966.7MB in the end (delta: -613.0MB). Peak memory consumption was 411.9MB. Max. memory is 8.0GB. [2023-12-15 17:35:53,970 INFO L158 Benchmark]: TraceAbstraction took 48406.01ms. Allocated memory was 1.6GB in the beginning and 2.5GB in the end (delta: 944.8MB). Free memory was 966.2MB in the beginning and 1.6GB in the end (delta: -611.8MB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2023-12-15 17:35:53,971 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.00ms. Allocated memory is still 195.0MB. Free memory is still 148.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 2576.15ms. Allocated memory is still 317.7MB. Free memory was 244.0MB in the beginning and 157.1MB in the end (delta: 87.0MB). Peak memory consumption was 167.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 382.08ms. Allocated memory was 317.7MB in the beginning and 527.4MB in the end (delta: 209.7MB). Free memory was 157.1MB in the beginning and 372.6MB in the end (delta: -215.5MB). Peak memory consumption was 58.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 575.91ms. Allocated memory is still 527.4MB. Free memory was 372.6MB in the beginning and 353.7MB in the end (delta: 18.9MB). Peak memory consumption was 68.7MB. Max. memory is 8.0GB. * RCFGBuilder took 6139.39ms. Allocated memory was 527.4MB in the beginning and 1.6GB in the end (delta: 1.0GB). Free memory was 353.7MB in the beginning and 966.7MB in the end (delta: -613.0MB). Peak memory consumption was 411.9MB. Max. memory is 8.0GB. * TraceAbstraction took 48406.01ms. Allocated memory was 1.6GB in the beginning and 2.5GB in the end (delta: 944.8MB). Free memory was 966.2MB in the beginning and 1.6GB in the end (delta: -611.8MB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 11173]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 11173). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 11118]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 11118). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 2479 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 48.3s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 40.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 67158 SdHoareTripleChecker+Valid, 26.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 66862 mSDsluCounter, 289453 SdHoareTripleChecker+Invalid, 23.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 229085 mSDsCounter, 1093 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37070 IncrementalHoareTripleChecker+Invalid, 38163 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1093 mSolverCounterUnsat, 60368 mSDtfsCounter, 37070 mSolverCounterSat, 1.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 342 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 8.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23891occurred in iteration=12, InterpolantAutomatonStates: 153, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.6s AutomataMinimizationTime, 14 MinimizatonAttempts, 25369 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 2268 NumberOfCodeBlocks, 2268 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 2254 ConstructedInterpolants, 0 QuantifiedInterpolants, 6557 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown