/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_label42+token_ring.04.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-18 22:10:00,090 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-18 22:10:00,155 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-18 22:10:00,161 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-18 22:10:00,161 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-18 22:10:00,184 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-18 22:10:00,185 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-18 22:10:00,185 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-18 22:10:00,185 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-18 22:10:00,186 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-18 22:10:00,186 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-18 22:10:00,186 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-18 22:10:00,186 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-18 22:10:00,187 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-18 22:10:00,187 INFO L153 SettingsManager]: * Use SBE=true [2023-12-18 22:10:00,187 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-18 22:10:00,187 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-18 22:10:00,188 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-18 22:10:00,190 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-18 22:10:00,190 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-18 22:10:00,190 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-18 22:10:00,193 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-18 22:10:00,193 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-18 22:10:00,194 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-18 22:10:00,196 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-18 22:10:00,196 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-18 22:10:00,196 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-18 22:10:00,197 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-18 22:10:00,197 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-18 22:10:00,197 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-18 22:10:00,198 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-18 22:10:00,198 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-18 22:10:00,198 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 22:10:00,198 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-18 22:10:00,198 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-18 22:10:00,198 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-18 22:10:00,199 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-18 22:10:00,199 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-18 22:10:00,199 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-18 22:10:00,199 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-18 22:10:00,199 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-18 22:10:00,199 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-18 22:10:00,199 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-18 22:10:00,199 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-18 22:10:00,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-18 22:10:00,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-18 22:10:00,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-18 22:10:00,426 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-18 22:10:00,426 INFO L274 PluginConnector]: CDTParser initialized [2023-12-18 22:10:00,427 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label42+token_ring.04.cil-2.c [2023-12-18 22:10:01,486 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-18 22:10:02,003 INFO L384 CDTParser]: Found 1 translation units. [2023-12-18 22:10:02,004 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label42+token_ring.04.cil-2.c [2023-12-18 22:10:02,065 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc4ad853e/1448cc225c934f6fab12f90225ef90b1/FLAGdd395ede6 [2023-12-18 22:10:02,078 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc4ad853e/1448cc225c934f6fab12f90225ef90b1 [2023-12-18 22:10:02,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-18 22:10:02,081 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-18 22:10:02,083 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-18 22:10:02,083 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-18 22:10:02,086 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-18 22:10:02,087 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:10:02" (1/1) ... [2023-12-18 22:10:02,087 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37425a2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:10:02, skipping insertion in model container [2023-12-18 22:10:02,088 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:10:02" (1/1) ... [2023-12-18 22:10:02,306 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-18 22:10:03,442 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_label42+token_ring.04.cil-2.c[378560,378573] [2023-12-18 22:10:03,464 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_label42+token_ring.04.cil-2.c[383339,383352] [2023-12-18 22:10:03,579 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 22:10:03,587 INFO L202 MainTranslator]: Completed pre-run [2023-12-18 22:10:04,142 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_label42+token_ring.04.cil-2.c[378560,378573] [2023-12-18 22:10:04,149 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_label42+token_ring.04.cil-2.c[383339,383352] [2023-12-18 22:10:04,159 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 22:10:04,239 INFO L206 MainTranslator]: Completed translation [2023-12-18 22:10:04,242 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:10:04 WrapperNode [2023-12-18 22:10:04,242 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-18 22:10:04,244 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-18 22:10:04,244 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-18 22:10:04,244 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-18 22:10:04,249 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:10:04" (1/1) ... [2023-12-18 22:10:04,336 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:10:04" (1/1) ... [2023-12-18 22:10:04,563 INFO L138 Inliner]: procedures = 52, calls = 54, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 12759 [2023-12-18 22:10:04,564 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-18 22:10:04,564 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-18 22:10:04,564 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-18 22:10:04,564 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-18 22:10:04,572 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:10:04" (1/1) ... [2023-12-18 22:10:04,573 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:10:04" (1/1) ... [2023-12-18 22:10:04,690 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:10:04" (1/1) ... [2023-12-18 22:10:04,757 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-18 22:10:04,757 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:10:04" (1/1) ... [2023-12-18 22:10:04,757 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:10:04" (1/1) ... [2023-12-18 22:10:04,842 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:10:04" (1/1) ... [2023-12-18 22:10:04,878 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:10:04" (1/1) ... [2023-12-18 22:10:04,907 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:10:04" (1/1) ... [2023-12-18 22:10:04,998 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:10:04" (1/1) ... [2023-12-18 22:10:05,049 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-18 22:10:05,050 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-18 22:10:05,051 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-18 22:10:05,051 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-18 22:10:05,052 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:10:04" (1/1) ... [2023-12-18 22:10:05,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 22:10:05,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:10:05,074 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-18 22:10:05,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-18 22:10:05,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-18 22:10:05,106 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-18 22:10:05,106 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-18 22:10:05,107 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-18 22:10:05,107 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-18 22:10:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-18 22:10:05,108 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-18 22:10:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-18 22:10:05,108 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-18 22:10:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-18 22:10:05,108 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-18 22:10:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-18 22:10:05,108 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-18 22:10:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-18 22:10:05,108 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-18 22:10:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-18 22:10:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-18 22:10:05,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-18 22:10:05,185 INFO L241 CfgBuilder]: Building ICFG [2023-12-18 22:10:05,187 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-18 22:10:10,892 INFO L282 CfgBuilder]: Performing block encoding [2023-12-18 22:10:10,964 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-18 22:10:10,965 INFO L309 CfgBuilder]: Removed 8 assume(true) statements. [2023-12-18 22:10:10,965 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:10:10 BoogieIcfgContainer [2023-12-18 22:10:10,965 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-18 22:10:10,967 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-18 22:10:10,967 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-18 22:10:10,969 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-18 22:10:10,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 10:10:02" (1/3) ... [2023-12-18 22:10:10,970 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57098a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:10:10, skipping insertion in model container [2023-12-18 22:10:10,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:10:04" (2/3) ... [2023-12-18 22:10:10,970 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57098a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:10:10, skipping insertion in model container [2023-12-18 22:10:10,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:10:10" (3/3) ... [2023-12-18 22:10:10,971 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.04.cil-2.c [2023-12-18 22:10:10,983 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-18 22:10:10,984 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-18 22:10:11,040 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-18 22:10:11,045 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;@43ed3e9b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-18 22:10:11,045 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-18 22:10:11,053 INFO L276 IsEmpty]: Start isEmpty. Operand has 2295 states, 2265 states have (on average 1.8838852097130243) internal successors, (4267), 2270 states have internal predecessors, (4267), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-18 22:10:11,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-18 22:10:11,063 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:10:11,064 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] [2023-12-18 22:10:11,064 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:10:11,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:10:11,068 INFO L85 PathProgramCache]: Analyzing trace with hash 269216924, now seen corresponding path program 1 times [2023-12-18 22:10:11,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:10:11,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832253524] [2023-12-18 22:10:11,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:10:11,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:10:11,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:11,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:10:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:11,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-18 22:10:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:11,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-18 22:10:11,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:11,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-18 22:10:11,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:11,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:10:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:11,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:10:11,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:10:11,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832253524] [2023-12-18 22:10:11,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832253524] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:10:11,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:10:11,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 22:10:11,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781403678] [2023-12-18 22:10:11,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:10:11,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 22:10:11,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:10:11,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 22:10:11,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-18 22:10:11,349 INFO L87 Difference]: Start difference. First operand has 2295 states, 2265 states have (on average 1.8838852097130243) internal successors, (4267), 2270 states have internal predecessors, (4267), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:10:12,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:10:12,224 INFO L93 Difference]: Finished difference Result 4635 states and 8694 transitions. [2023-12-18 22:10:12,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 22:10:12,226 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 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 82 [2023-12-18 22:10:12,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:10:12,242 INFO L225 Difference]: With dead ends: 4635 [2023-12-18 22:10:12,242 INFO L226 Difference]: Without dead ends: 2340 [2023-12-18 22:10:12,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-18 22:10:12,251 INFO L413 NwaCegarLoop]: 4116 mSDtfsCounter, 425 mSDsluCounter, 12046 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 16162 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-18 22:10:12,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 16162 Invalid, 491 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [44 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-18 22:10:12,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2340 states. [2023-12-18 22:10:12,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2340 to 2290. [2023-12-18 22:10:12,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2290 states, 2262 states have (on average 1.8492484526967286) internal successors, (4183), 2265 states have internal predecessors, (4183), 20 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-18 22:10:12,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2290 states to 2290 states and 4221 transitions. [2023-12-18 22:10:12,338 INFO L78 Accepts]: Start accepts. Automaton has 2290 states and 4221 transitions. Word has length 82 [2023-12-18 22:10:12,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:10:12,338 INFO L495 AbstractCegarLoop]: Abstraction has 2290 states and 4221 transitions. [2023-12-18 22:10:12,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:10:12,339 INFO L276 IsEmpty]: Start isEmpty. Operand 2290 states and 4221 transitions. [2023-12-18 22:10:12,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-18 22:10:12,349 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:10:12,350 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] [2023-12-18 22:10:12,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-18 22:10:12,350 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:10:12,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:10:12,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1464887526, now seen corresponding path program 1 times [2023-12-18 22:10:12,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:10:12,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287567292] [2023-12-18 22:10:12,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:10:12,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:10:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:12,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:10:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:12,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-18 22:10:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:12,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-18 22:10:12,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:12,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-18 22:10:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:12,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:10:12,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:12,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:10:12,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:10:12,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287567292] [2023-12-18 22:10:12,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287567292] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:10:12,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:10:12,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 22:10:12,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520305646] [2023-12-18 22:10:12,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:10:12,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 22:10:12,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:10:12,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 22:10:12,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-18 22:10:12,609 INFO L87 Difference]: Start difference. First operand 2290 states and 4221 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:10:13,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:10:13,438 INFO L93 Difference]: Finished difference Result 2711 states and 4899 transitions. [2023-12-18 22:10:13,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-18 22:10:13,440 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 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 82 [2023-12-18 22:10:13,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:10:13,451 INFO L225 Difference]: With dead ends: 2711 [2023-12-18 22:10:13,451 INFO L226 Difference]: Without dead ends: 2552 [2023-12-18 22:10:13,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:10:13,455 INFO L413 NwaCegarLoop]: 4097 mSDtfsCounter, 4578 mSDsluCounter, 12271 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4589 SdHoareTripleChecker+Valid, 16368 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-18 22:10:13,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4589 Valid, 16368 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-18 22:10:13,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2552 states. [2023-12-18 22:10:13,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2552 to 2451. [2023-12-18 22:10:13,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2451 states, 2403 states have (on average 1.834789846025801) internal successors, (4409), 2407 states have internal predecessors, (4409), 33 states have call successors, (33), 13 states have call predecessors, (33), 13 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2023-12-18 22:10:13,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2451 states to 2451 states and 4476 transitions. [2023-12-18 22:10:13,517 INFO L78 Accepts]: Start accepts. Automaton has 2451 states and 4476 transitions. Word has length 82 [2023-12-18 22:10:13,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:10:13,517 INFO L495 AbstractCegarLoop]: Abstraction has 2451 states and 4476 transitions. [2023-12-18 22:10:13,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:10:13,518 INFO L276 IsEmpty]: Start isEmpty. Operand 2451 states and 4476 transitions. [2023-12-18 22:10:13,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-18 22:10:13,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:10:13,519 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] [2023-12-18 22:10:13,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-18 22:10:13,520 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:10:13,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:10:13,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1827980506, now seen corresponding path program 1 times [2023-12-18 22:10:13,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:10:13,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447682943] [2023-12-18 22:10:13,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:10:13,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:10:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:13,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:10:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:13,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-18 22:10:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:13,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-18 22:10:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:13,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-18 22:10:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:13,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:10:13,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:13,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:10:13,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:10:13,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447682943] [2023-12-18 22:10:13,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447682943] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:10:13,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:10:13,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:10:13,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634459029] [2023-12-18 22:10:13,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:10:13,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:10:13,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:10:13,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:10:13,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:10:13,688 INFO L87 Difference]: Start difference. First operand 2451 states and 4476 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:10:15,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:10:15,047 INFO L93 Difference]: Finished difference Result 3086 states and 5493 transitions. [2023-12-18 22:10:15,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:10:15,048 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 82 [2023-12-18 22:10:15,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:10:15,056 INFO L225 Difference]: With dead ends: 3086 [2023-12-18 22:10:15,056 INFO L226 Difference]: Without dead ends: 2766 [2023-12-18 22:10:15,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:10:15,059 INFO L413 NwaCegarLoop]: 4202 mSDtfsCounter, 4581 mSDsluCounter, 16604 mSDsCounter, 0 mSdLazyCounter, 1565 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4592 SdHoareTripleChecker+Valid, 20806 SdHoareTripleChecker+Invalid, 1614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:10:15,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4592 Valid, 20806 Invalid, 1614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1565 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-18 22:10:15,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2023-12-18 22:10:15,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 2601. [2023-12-18 22:10:15,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2601 states, 2533 states have (on average 1.8211606790367154) internal successors, (4613), 2538 states have internal predecessors, (4613), 46 states have call successors, (46), 19 states have call predecessors, (46), 20 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2023-12-18 22:10:15,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2601 states to 2601 states and 4708 transitions. [2023-12-18 22:10:15,109 INFO L78 Accepts]: Start accepts. Automaton has 2601 states and 4708 transitions. Word has length 82 [2023-12-18 22:10:15,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:10:15,110 INFO L495 AbstractCegarLoop]: Abstraction has 2601 states and 4708 transitions. [2023-12-18 22:10:15,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:10:15,110 INFO L276 IsEmpty]: Start isEmpty. Operand 2601 states and 4708 transitions. [2023-12-18 22:10:15,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-18 22:10:15,111 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:10:15,111 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] [2023-12-18 22:10:15,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-18 22:10:15,111 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:10:15,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:10:15,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1513046632, now seen corresponding path program 1 times [2023-12-18 22:10:15,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:10:15,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302052996] [2023-12-18 22:10:15,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:10:15,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:10:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:15,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:10:15,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:15,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-18 22:10:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:15,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-18 22:10:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:15,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-18 22:10:15,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:15,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:10:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:15,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:10:15,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:10:15,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302052996] [2023-12-18 22:10:15,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302052996] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:10:15,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:10:15,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:10:15,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700294409] [2023-12-18 22:10:15,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:10:15,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:10:15,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:10:15,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:10:15,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:10:15,256 INFO L87 Difference]: Start difference. First operand 2601 states and 4708 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:10:16,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:10:16,552 INFO L93 Difference]: Finished difference Result 3635 states and 6361 transitions. [2023-12-18 22:10:16,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:10:16,553 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 82 [2023-12-18 22:10:16,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:10:16,564 INFO L225 Difference]: With dead ends: 3635 [2023-12-18 22:10:16,565 INFO L226 Difference]: Without dead ends: 3165 [2023-12-18 22:10:16,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:10:16,574 INFO L413 NwaCegarLoop]: 4106 mSDtfsCounter, 4629 mSDsluCounter, 16349 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4640 SdHoareTripleChecker+Valid, 20455 SdHoareTripleChecker+Invalid, 1367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:10:16,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4640 Valid, 20455 Invalid, 1367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1292 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-18 22:10:16,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3165 states. [2023-12-18 22:10:16,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3165 to 2902. [2023-12-18 22:10:16,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2902 states, 2794 states have (on average 1.7974230493915533) internal successors, (5022), 2801 states have internal predecessors, (5022), 72 states have call successors, (72), 31 states have call predecessors, (72), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2023-12-18 22:10:16,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2902 states to 2902 states and 5177 transitions. [2023-12-18 22:10:16,661 INFO L78 Accepts]: Start accepts. Automaton has 2902 states and 5177 transitions. Word has length 82 [2023-12-18 22:10:16,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:10:16,661 INFO L495 AbstractCegarLoop]: Abstraction has 2902 states and 5177 transitions. [2023-12-18 22:10:16,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:10:16,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2902 states and 5177 transitions. [2023-12-18 22:10:16,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-18 22:10:16,665 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:10:16,666 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] [2023-12-18 22:10:16,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-18 22:10:16,666 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:10:16,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:10:16,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1565766938, now seen corresponding path program 1 times [2023-12-18 22:10:16,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:10:16,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745530595] [2023-12-18 22:10:16,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:10:16,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:10:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:16,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:10:16,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:16,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-18 22:10:16,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:16,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-18 22:10:16,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:16,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-18 22:10:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:16,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:10:16,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:16,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:10:16,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:10:16,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745530595] [2023-12-18 22:10:16,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745530595] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:10:16,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:10:16,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:10:16,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20457638] [2023-12-18 22:10:16,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:10:16,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:10:16,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:10:16,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:10:16,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:10:16,813 INFO L87 Difference]: Start difference. First operand 2902 states and 5177 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:10:17,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:10:17,475 INFO L93 Difference]: Finished difference Result 3924 states and 6821 transitions. [2023-12-18 22:10:17,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 22:10:17,476 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 82 [2023-12-18 22:10:17,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:10:17,485 INFO L225 Difference]: With dead ends: 3924 [2023-12-18 22:10:17,485 INFO L226 Difference]: Without dead ends: 3153 [2023-12-18 22:10:17,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:10:17,488 INFO L413 NwaCegarLoop]: 4084 mSDtfsCounter, 4430 mSDsluCounter, 16208 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4442 SdHoareTripleChecker+Valid, 20292 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-18 22:10:17,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4442 Valid, 20292 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-18 22:10:17,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3153 states. [2023-12-18 22:10:17,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3153 to 2902. [2023-12-18 22:10:17,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2902 states, 2794 states have (on average 1.7956335003579098) internal successors, (5017), 2801 states have internal predecessors, (5017), 72 states have call successors, (72), 31 states have call predecessors, (72), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2023-12-18 22:10:17,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2902 states to 2902 states and 5172 transitions. [2023-12-18 22:10:17,555 INFO L78 Accepts]: Start accepts. Automaton has 2902 states and 5172 transitions. Word has length 82 [2023-12-18 22:10:17,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:10:17,556 INFO L495 AbstractCegarLoop]: Abstraction has 2902 states and 5172 transitions. [2023-12-18 22:10:17,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:10:17,556 INFO L276 IsEmpty]: Start isEmpty. Operand 2902 states and 5172 transitions. [2023-12-18 22:10:17,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-18 22:10:17,557 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:10:17,557 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] [2023-12-18 22:10:17,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-18 22:10:17,557 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:10:17,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:10:17,557 INFO L85 PathProgramCache]: Analyzing trace with hash 833799512, now seen corresponding path program 1 times [2023-12-18 22:10:17,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:10:17,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781009981] [2023-12-18 22:10:17,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:10:17,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:10:17,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:17,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:10:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:17,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-18 22:10:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:17,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-18 22:10:17,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:17,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-18 22:10:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:17,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:10:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:17,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:10:17,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:10:17,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781009981] [2023-12-18 22:10:17,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781009981] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:10:17,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:10:17,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:10:17,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36781379] [2023-12-18 22:10:17,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:10:17,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:10:17,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:10:17,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:10:17,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:10:17,651 INFO L87 Difference]: Start difference. First operand 2902 states and 5172 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:10:18,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:10:18,901 INFO L93 Difference]: Finished difference Result 4905 states and 8338 transitions. [2023-12-18 22:10:18,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:10:18,904 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 82 [2023-12-18 22:10:18,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:10:18,921 INFO L225 Difference]: With dead ends: 4905 [2023-12-18 22:10:18,922 INFO L226 Difference]: Without dead ends: 4134 [2023-12-18 22:10:18,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:10:18,926 INFO L413 NwaCegarLoop]: 4198 mSDtfsCounter, 4725 mSDsluCounter, 16599 mSDsCounter, 0 mSdLazyCounter, 1501 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4741 SdHoareTripleChecker+Valid, 20797 SdHoareTripleChecker+Invalid, 1555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-18 22:10:18,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4741 Valid, 20797 Invalid, 1555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1501 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-18 22:10:18,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4134 states. [2023-12-18 22:10:19,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4134 to 3506. [2023-12-18 22:10:19,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3506 states, 3322 states have (on average 1.7585791691751957) internal successors, (5842), 3333 states have internal predecessors, (5842), 120 states have call successors, (120), 55 states have call predecessors, (120), 62 states have return successors, (153), 125 states have call predecessors, (153), 118 states have call successors, (153) [2023-12-18 22:10:19,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3506 states to 3506 states and 6115 transitions. [2023-12-18 22:10:19,087 INFO L78 Accepts]: Start accepts. Automaton has 3506 states and 6115 transitions. Word has length 82 [2023-12-18 22:10:19,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:10:19,087 INFO L495 AbstractCegarLoop]: Abstraction has 3506 states and 6115 transitions. [2023-12-18 22:10:19,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:10:19,087 INFO L276 IsEmpty]: Start isEmpty. Operand 3506 states and 6115 transitions. [2023-12-18 22:10:19,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-18 22:10:19,089 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:10:19,089 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] [2023-12-18 22:10:19,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-18 22:10:19,089 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:10:19,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:10:19,089 INFO L85 PathProgramCache]: Analyzing trace with hash 779406614, now seen corresponding path program 1 times [2023-12-18 22:10:19,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:10:19,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543517005] [2023-12-18 22:10:19,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:10:19,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:10:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:19,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:10:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:19,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-18 22:10:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:19,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-18 22:10:19,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:19,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-18 22:10:19,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:19,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:10:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:19,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:10:19,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:10:19,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543517005] [2023-12-18 22:10:19,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543517005] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:10:19,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:10:19,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:10:19,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141833007] [2023-12-18 22:10:19,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:10:19,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:10:19,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:10:19,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:10:19,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:10:19,173 INFO L87 Difference]: Start difference. First operand 3506 states and 6115 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:10:20,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:10:20,482 INFO L93 Difference]: Finished difference Result 7133 states and 11845 transitions. [2023-12-18 22:10:20,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:10:20,483 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 82 [2023-12-18 22:10:20,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:10:20,516 INFO L225 Difference]: With dead ends: 7133 [2023-12-18 22:10:20,516 INFO L226 Difference]: Without dead ends: 5758 [2023-12-18 22:10:20,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:10:20,523 INFO L413 NwaCegarLoop]: 4197 mSDtfsCounter, 4598 mSDsluCounter, 16596 mSDsCounter, 0 mSdLazyCounter, 1716 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4608 SdHoareTripleChecker+Valid, 20793 SdHoareTripleChecker+Invalid, 1769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:10:20,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4608 Valid, 20793 Invalid, 1769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1716 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-18 22:10:20,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5758 states. [2023-12-18 22:10:20,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5758 to 4629. [2023-12-18 22:10:20,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4629 states, 4297 states have (on average 1.7095648126599954) internal successors, (7346), 4316 states have internal predecessors, (7346), 212 states have call successors, (212), 103 states have call predecessors, (212), 118 states have return successors, (307), 225 states have call predecessors, (307), 210 states have call successors, (307) [2023-12-18 22:10:20,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4629 states to 4629 states and 7865 transitions. [2023-12-18 22:10:20,656 INFO L78 Accepts]: Start accepts. Automaton has 4629 states and 7865 transitions. Word has length 82 [2023-12-18 22:10:20,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:10:20,656 INFO L495 AbstractCegarLoop]: Abstraction has 4629 states and 7865 transitions. [2023-12-18 22:10:20,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:10:20,657 INFO L276 IsEmpty]: Start isEmpty. Operand 4629 states and 7865 transitions. [2023-12-18 22:10:20,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-18 22:10:20,660 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:10:20,660 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] [2023-12-18 22:10:20,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-18 22:10:20,660 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:10:20,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:10:20,660 INFO L85 PathProgramCache]: Analyzing trace with hash 362010008, now seen corresponding path program 1 times [2023-12-18 22:10:20,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:10:20,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460669783] [2023-12-18 22:10:20,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:10:20,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:10:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:20,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:10:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:20,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-18 22:10:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:20,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-18 22:10:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:20,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-18 22:10:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:20,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:10:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:20,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:10:20,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:10:20,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460669783] [2023-12-18 22:10:20,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460669783] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:10:20,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:10:20,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:10:20,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095520588] [2023-12-18 22:10:20,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:10:20,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:10:20,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:10:20,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:10:20,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:10:20,757 INFO L87 Difference]: Start difference. First operand 4629 states and 7865 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:10:22,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:10:22,149 INFO L93 Difference]: Finished difference Result 11234 states and 18285 transitions. [2023-12-18 22:10:22,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:10:22,149 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 82 [2023-12-18 22:10:22,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:10:22,188 INFO L225 Difference]: With dead ends: 11234 [2023-12-18 22:10:22,188 INFO L226 Difference]: Without dead ends: 8736 [2023-12-18 22:10:22,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:10:22,208 INFO L413 NwaCegarLoop]: 4198 mSDtfsCounter, 4653 mSDsluCounter, 16599 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4669 SdHoareTripleChecker+Valid, 20797 SdHoareTripleChecker+Invalid, 1529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:10:22,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4669 Valid, 20797 Invalid, 1529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1475 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-18 22:10:22,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8736 states. [2023-12-18 22:10:22,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8736 to 6954. [2023-12-18 22:10:22,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6954 states, 6334 states have (on average 1.6596147773918535) internal successors, (10512), 6369 states have internal predecessors, (10512), 388 states have call successors, (388), 199 states have call predecessors, (388), 230 states have return successors, (661), 417 states have call predecessors, (661), 386 states have call successors, (661) [2023-12-18 22:10:22,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6954 states to 6954 states and 11561 transitions. [2023-12-18 22:10:22,448 INFO L78 Accepts]: Start accepts. Automaton has 6954 states and 11561 transitions. Word has length 82 [2023-12-18 22:10:22,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:10:22,448 INFO L495 AbstractCegarLoop]: Abstraction has 6954 states and 11561 transitions. [2023-12-18 22:10:22,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:10:22,448 INFO L276 IsEmpty]: Start isEmpty. Operand 6954 states and 11561 transitions. [2023-12-18 22:10:22,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-18 22:10:22,451 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:10:22,451 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] [2023-12-18 22:10:22,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-18 22:10:22,452 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:10:22,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:10:22,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1041282262, now seen corresponding path program 1 times [2023-12-18 22:10:22,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:10:22,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236868883] [2023-12-18 22:10:22,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:10:22,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:10:22,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:22,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:10:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:22,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-18 22:10:22,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:22,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-18 22:10:22,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:22,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-18 22:10:22,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:22,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:10:22,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:22,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:10:22,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:10:22,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236868883] [2023-12-18 22:10:22,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236868883] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:10:22,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:10:22,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:10:22,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816064241] [2023-12-18 22:10:22,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:10:22,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:10:22,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:10:22,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:10:22,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:10:22,547 INFO L87 Difference]: Start difference. First operand 6954 states and 11561 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:10:23,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:10:23,947 INFO L93 Difference]: Finished difference Result 19421 states and 31383 transitions. [2023-12-18 22:10:23,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:10:23,952 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 82 [2023-12-18 22:10:23,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:10:24,003 INFO L225 Difference]: With dead ends: 19421 [2023-12-18 22:10:24,004 INFO L226 Difference]: Without dead ends: 14598 [2023-12-18 22:10:24,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:10:24,025 INFO L413 NwaCegarLoop]: 4198 mSDtfsCounter, 4617 mSDsluCounter, 16599 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4633 SdHoareTripleChecker+Valid, 20797 SdHoareTripleChecker+Invalid, 1516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-18 22:10:24,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4633 Valid, 20797 Invalid, 1516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1462 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-18 22:10:24,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14598 states. [2023-12-18 22:10:24,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14598 to 11603. [2023-12-18 22:10:24,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11603 states, 10423 states have (on average 1.618919696824331) internal successors, (16874), 10490 states have internal predecessors, (16874), 724 states have call successors, (724), 391 states have call predecessors, (724), 454 states have return successors, (1515), 785 states have call predecessors, (1515), 722 states have call successors, (1515) [2023-12-18 22:10:24,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11603 states to 11603 states and 19113 transitions. [2023-12-18 22:10:24,498 INFO L78 Accepts]: Start accepts. Automaton has 11603 states and 19113 transitions. Word has length 82 [2023-12-18 22:10:24,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:10:24,498 INFO L495 AbstractCegarLoop]: Abstraction has 11603 states and 19113 transitions. [2023-12-18 22:10:24,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:10:24,499 INFO L276 IsEmpty]: Start isEmpty. Operand 11603 states and 19113 transitions. [2023-12-18 22:10:24,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-18 22:10:24,506 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:10:24,506 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] [2023-12-18 22:10:24,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-18 22:10:24,507 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:10:24,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:10:24,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1292110376, now seen corresponding path program 1 times [2023-12-18 22:10:24,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:10:24,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074021559] [2023-12-18 22:10:24,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:10:24,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:10:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:24,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:10:24,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:24,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-18 22:10:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:24,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-18 22:10:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:24,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-18 22:10:24,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:24,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:10:24,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:24,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:10:24,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:10:24,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074021559] [2023-12-18 22:10:24,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074021559] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:10:24,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:10:24,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:10:24,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166893279] [2023-12-18 22:10:24,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:10:24,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:10:24,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:10:24,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:10:24,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:10:24,633 INFO L87 Difference]: Start difference. First operand 11603 states and 19113 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:10:26,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:10:26,267 INFO L93 Difference]: Finished difference Result 35280 states and 57361 transitions. [2023-12-18 22:10:26,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:10:26,268 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 82 [2023-12-18 22:10:26,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:10:26,344 INFO L225 Difference]: With dead ends: 35280 [2023-12-18 22:10:26,345 INFO L226 Difference]: Without dead ends: 25808 [2023-12-18 22:10:26,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:10:26,375 INFO L413 NwaCegarLoop]: 4188 mSDtfsCounter, 4566 mSDsluCounter, 16587 mSDsCounter, 0 mSdLazyCounter, 1510 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4576 SdHoareTripleChecker+Valid, 20775 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-18 22:10:26,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4576 Valid, 20775 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1510 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-18 22:10:26,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25808 states. [2023-12-18 22:10:27,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25808 to 20888. [2023-12-18 22:10:27,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20888 states, 18628 states have (on average 1.5920120249087395) internal successors, (29656), 18759 states have internal predecessors, (29656), 1360 states have call successors, (1360), 771 states have call predecessors, (1360), 898 states have return successors, (3673), 1485 states have call predecessors, (3673), 1358 states have call successors, (3673) [2023-12-18 22:10:27,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20888 states to 20888 states and 34689 transitions. [2023-12-18 22:10:27,069 INFO L78 Accepts]: Start accepts. Automaton has 20888 states and 34689 transitions. Word has length 82 [2023-12-18 22:10:27,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:10:27,069 INFO L495 AbstractCegarLoop]: Abstraction has 20888 states and 34689 transitions. [2023-12-18 22:10:27,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:10:27,069 INFO L276 IsEmpty]: Start isEmpty. Operand 20888 states and 34689 transitions. [2023-12-18 22:10:27,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-18 22:10:27,090 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:10:27,090 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] [2023-12-18 22:10:27,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-18 22:10:27,090 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:10:27,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:10:27,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1090286442, now seen corresponding path program 1 times [2023-12-18 22:10:27,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:10:27,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703876716] [2023-12-18 22:10:27,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:10:27,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:10:27,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:27,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:10:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:27,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-18 22:10:27,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:27,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-18 22:10:27,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:27,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-18 22:10:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:27,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:10:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:27,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:10:27,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:10:27,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703876716] [2023-12-18 22:10:27,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703876716] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:10:27,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:10:27,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 22:10:27,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697997935] [2023-12-18 22:10:27,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:10:27,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 22:10:27,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:10:27,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 22:10:27,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-18 22:10:27,169 INFO L87 Difference]: Start difference. First operand 20888 states and 34689 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:10:28,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:10:28,924 INFO L93 Difference]: Finished difference Result 54910 states and 89680 transitions. [2023-12-18 22:10:28,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-18 22:10:28,925 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 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 82 [2023-12-18 22:10:28,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:10:29,029 INFO L225 Difference]: With dead ends: 54910 [2023-12-18 22:10:29,029 INFO L226 Difference]: Without dead ends: 36154 [2023-12-18 22:10:29,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-18 22:10:29,080 INFO L413 NwaCegarLoop]: 4224 mSDtfsCounter, 4757 mSDsluCounter, 12336 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4786 SdHoareTripleChecker+Valid, 16560 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-18 22:10:29,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4786 Valid, 16560 Invalid, 1342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-18 22:10:29,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36154 states. [2023-12-18 22:10:30,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36154 to 30017. [2023-12-18 22:10:30,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30017 states, 26585 states have (on average 1.5682527741207448) internal successors, (41692), 26845 states have internal predecessors, (41692), 2078 states have call successors, (2078), 1161 states have call predecessors, (2078), 1352 states have return successors, (5121), 2138 states have call predecessors, (5121), 2076 states have call successors, (5121) [2023-12-18 22:10:30,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30017 states to 30017 states and 48891 transitions. [2023-12-18 22:10:30,183 INFO L78 Accepts]: Start accepts. Automaton has 30017 states and 48891 transitions. Word has length 82 [2023-12-18 22:10:30,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:10:30,183 INFO L495 AbstractCegarLoop]: Abstraction has 30017 states and 48891 transitions. [2023-12-18 22:10:30,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:10:30,183 INFO L276 IsEmpty]: Start isEmpty. Operand 30017 states and 48891 transitions. [2023-12-18 22:10:30,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-18 22:10:30,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:10:30,237 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:10:30,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-18 22:10:30,237 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:10:30,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:10:30,237 INFO L85 PathProgramCache]: Analyzing trace with hash -858585804, now seen corresponding path program 1 times [2023-12-18 22:10:30,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:10:30,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981409683] [2023-12-18 22:10:30,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:10:30,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:10:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:30,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:10:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:30,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-18 22:10:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:30,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-18 22:10:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:30,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-18 22:10:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:30,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:10:30,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:30,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-18 22:10:30,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:30,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:10:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:30,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-18 22:10:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:30,350 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-18 22:10:30,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:10:30,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981409683] [2023-12-18 22:10:30,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981409683] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:10:30,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545730040] [2023-12-18 22:10:30,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:10:30,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:10:30,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:10:30,353 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 22:10:30,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-18 22:10:30,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:30,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-18 22:10:30,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:10:30,562 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-18 22:10:30,562 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:10:30,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545730040] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:10:30,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:10:30,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-18 22:10:30,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941098347] [2023-12-18 22:10:30,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:10:30,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:10:30,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:10:30,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:10:30,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:10:30,564 INFO L87 Difference]: Start difference. First operand 30017 states and 48891 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-18 22:10:32,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:10:32,600 INFO L93 Difference]: Finished difference Result 85190 states and 138511 transitions. [2023-12-18 22:10:32,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:10:32,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 132 [2023-12-18 22:10:32,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:10:32,780 INFO L225 Difference]: With dead ends: 85190 [2023-12-18 22:10:32,780 INFO L226 Difference]: Without dead ends: 57305 [2023-12-18 22:10:32,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:10:32,841 INFO L413 NwaCegarLoop]: 4196 mSDtfsCounter, 4169 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4169 SdHoareTripleChecker+Valid, 4415 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 22:10:32,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4169 Valid, 4415 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 22:10:32,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57305 states. [2023-12-18 22:10:34,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57305 to 57107. [2023-12-18 22:10:34,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57107 states, 50357 states have (on average 1.5518597215878627) internal successors, (78147), 50874 states have internal predecessors, (78147), 4048 states have call successors, (4048), 2317 states have call predecessors, (4048), 2700 states have return successors, (10009), 4043 states have call predecessors, (10009), 4046 states have call successors, (10009) [2023-12-18 22:10:34,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57107 states to 57107 states and 92204 transitions. [2023-12-18 22:10:34,912 INFO L78 Accepts]: Start accepts. Automaton has 57107 states and 92204 transitions. Word has length 132 [2023-12-18 22:10:34,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:10:34,913 INFO L495 AbstractCegarLoop]: Abstraction has 57107 states and 92204 transitions. [2023-12-18 22:10:34,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-18 22:10:34,913 INFO L276 IsEmpty]: Start isEmpty. Operand 57107 states and 92204 transitions. [2023-12-18 22:10:34,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-18 22:10:34,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:10:34,988 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:10:35,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-18 22:10:35,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-18 22:10:35,194 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:10:35,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:10:35,194 INFO L85 PathProgramCache]: Analyzing trace with hash 155416596, now seen corresponding path program 1 times [2023-12-18 22:10:35,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:10:35,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638246395] [2023-12-18 22:10:35,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:10:35,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:10:35,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:35,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:10:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:35,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-18 22:10:35,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:35,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-18 22:10:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:35,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-18 22:10:35,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:35,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:10:35,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:35,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-18 22:10:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:35,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:10:35,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:35,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-18 22:10:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:35,291 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-18 22:10:35,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:10:35,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638246395] [2023-12-18 22:10:35,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638246395] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:10:35,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168584414] [2023-12-18 22:10:35,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:10:35,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:10:35,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:10:35,293 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 22:10:35,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-18 22:10:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:35,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-18 22:10:35,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:10:35,455 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-18 22:10:35,455 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:10:35,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168584414] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:10:35,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:10:35,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-18 22:10:35,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713504470] [2023-12-18 22:10:35,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:10:35,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:10:35,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:10:35,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:10:35,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:10:35,457 INFO L87 Difference]: Start difference. First operand 57107 states and 92204 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-18 22:10:38,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:10:38,740 INFO L93 Difference]: Finished difference Result 165852 states and 268250 transitions. [2023-12-18 22:10:38,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:10:38,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 132 [2023-12-18 22:10:38,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:10:39,289 INFO L225 Difference]: With dead ends: 165852 [2023-12-18 22:10:39,289 INFO L226 Difference]: Without dead ends: 110877 [2023-12-18 22:10:39,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:10:39,375 INFO L413 NwaCegarLoop]: 4196 mSDtfsCounter, 4174 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4174 SdHoareTripleChecker+Valid, 4415 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:10:39,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4174 Valid, 4415 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:10:39,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110877 states. [2023-12-18 22:10:43,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110877 to 110485. [2023-12-18 22:10:43,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110485 states, 97213 states have (on average 1.5408124427802865) internal successors, (149787), 98244 states have internal predecessors, (149787), 7882 states have call successors, (7882), 4621 states have call predecessors, (7882), 5388 states have return successors, (19679), 7747 states have call predecessors, (19679), 7880 states have call successors, (19679) [2023-12-18 22:10:43,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110485 states to 110485 states and 177348 transitions. [2023-12-18 22:10:43,932 INFO L78 Accepts]: Start accepts. Automaton has 110485 states and 177348 transitions. Word has length 132 [2023-12-18 22:10:43,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:10:43,932 INFO L495 AbstractCegarLoop]: Abstraction has 110485 states and 177348 transitions. [2023-12-18 22:10:43,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-18 22:10:43,932 INFO L276 IsEmpty]: Start isEmpty. Operand 110485 states and 177348 transitions. [2023-12-18 22:10:44,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-18 22:10:44,252 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:10:44,252 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:10:44,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-18 22:10:44,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-18 22:10:44,457 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:10:44,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:10:44,457 INFO L85 PathProgramCache]: Analyzing trace with hash 428331316, now seen corresponding path program 1 times [2023-12-18 22:10:44,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:10:44,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58179829] [2023-12-18 22:10:44,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:10:44,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:10:44,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:44,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:10:44,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:44,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-18 22:10:44,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:44,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-18 22:10:44,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:44,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-18 22:10:44,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:44,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:10:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:44,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-18 22:10:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:44,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:10:44,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:44,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-18 22:10:44,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:44,600 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-18 22:10:44,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:10:44,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58179829] [2023-12-18 22:10:44,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58179829] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:10:44,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550913441] [2023-12-18 22:10:44,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:10:44,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:10:44,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:10:44,601 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 22:10:44,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-18 22:10:44,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:10:44,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-18 22:10:44,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:10:44,735 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-18 22:10:44,736 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:10:44,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550913441] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:10:44,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:10:44,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-18 22:10:44,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007848706] [2023-12-18 22:10:44,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:10:44,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:10:44,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:10:44,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:10:44,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:10:44,738 INFO L87 Difference]: Start difference. First operand 110485 states and 177348 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-18 22:10:51,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:10:51,268 INFO L93 Difference]: Finished difference Result 321785 states and 520405 transitions. [2023-12-18 22:10:51,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:10:51,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 132 [2023-12-18 22:10:51,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:10:52,457 INFO L225 Difference]: With dead ends: 321785 [2023-12-18 22:10:52,457 INFO L226 Difference]: Without dead ends: 213433 [2023-12-18 22:10:52,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:10:52,808 INFO L413 NwaCegarLoop]: 4406 mSDtfsCounter, 219 mSDsluCounter, 4197 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 8603 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:10:52,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 8603 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:10:52,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213433 states. [2023-12-18 22:11:00,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213433 to 213433. [2023-12-18 22:11:00,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213433 states, 187558 states have (on average 1.5286951236417534) internal successors, (286719), 189358 states have internal predecessors, (286719), 15169 states have call successors, (15169), 9169 states have call predecessors, (15169), 10704 states have return successors, (41394), 15161 states have call predecessors, (41394), 15167 states have call successors, (41394) [2023-12-18 22:11:01,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213433 states to 213433 states and 343282 transitions. [2023-12-18 22:11:01,580 INFO L78 Accepts]: Start accepts. Automaton has 213433 states and 343282 transitions. Word has length 132 [2023-12-18 22:11:01,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:11:01,581 INFO L495 AbstractCegarLoop]: Abstraction has 213433 states and 343282 transitions. [2023-12-18 22:11:01,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-18 22:11:01,581 INFO L276 IsEmpty]: Start isEmpty. Operand 213433 states and 343282 transitions. [2023-12-18 22:11:02,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-18 22:11:02,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:11:02,084 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:11:02,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-18 22:11:02,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:11:02,290 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:11:02,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:11:02,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1523543428, now seen corresponding path program 1 times [2023-12-18 22:11:02,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:11:02,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182872104] [2023-12-18 22:11:02,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:11:02,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:11:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:02,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:11:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:02,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-18 22:11:02,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:02,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-18 22:11:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:02,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-18 22:11:02,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:02,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:11:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:02,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-18 22:11:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:02,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:11:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:02,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-18 22:11:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:02,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:11:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:02,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-18 22:11:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:02,447 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-18 22:11:02,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:11:02,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182872104] [2023-12-18 22:11:02,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182872104] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:11:02,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561004522] [2023-12-18 22:11:02,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:11:02,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:11:02,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:11:02,449 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 22:11:02,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-18 22:11:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:11:02,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-18 22:11:02,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:11:02,941 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-18 22:11:02,941 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:11:02,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561004522] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:11:02,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:11:02,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-18 22:11:02,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115663030] [2023-12-18 22:11:02,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:11:02,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:11:02,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:11:02,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:11:02,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:11:02,942 INFO L87 Difference]: Start difference. First operand 213433 states and 343282 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-18 22:11:15,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:11:15,868 INFO L93 Difference]: Finished difference Result 630915 states and 1020721 transitions. [2023-12-18 22:11:15,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:11:15,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 170 [2023-12-18 22:11:15,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:11:17,757 INFO L225 Difference]: With dead ends: 630915 [2023-12-18 22:11:17,757 INFO L226 Difference]: Without dead ends: 419621 [2023-12-18 22:11:18,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:11:18,311 INFO L413 NwaCegarLoop]: 4196 mSDtfsCounter, 4118 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4118 SdHoareTripleChecker+Valid, 4415 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:11:18,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4118 Valid, 4415 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:11:18,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419621 states.