./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2c.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2c.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ae56bcfc435405d456e1dc5e8920e6da28d699f35561354769dbf7e31b8f91d6 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 02:03:58,197 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 02:03:58,273 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-20 02:03:58,277 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 02:03:58,280 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 02:03:58,298 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 02:03:58,302 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 02:03:58,302 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 02:03:58,303 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 02:03:58,303 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 02:03:58,303 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 02:03:58,304 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 02:03:58,304 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 02:03:58,304 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 02:03:58,305 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 02:03:58,305 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 02:03:58,305 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 02:03:58,306 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 02:03:58,306 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 02:03:58,308 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 02:03:58,311 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 02:03:58,311 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 02:03:58,311 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 02:03:58,312 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 02:03:58,312 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 02:03:58,312 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 02:03:58,313 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 02:03:58,313 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 02:03:58,313 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 02:03:58,313 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 02:03:58,314 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 02:03:58,316 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 02:03:58,317 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 02:03:58,317 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 02:03:58,317 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 02:03:58,318 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 02:03:58,318 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 02:03:58,318 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 02:03:58,318 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 02:03:58,318 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae56bcfc435405d456e1dc5e8920e6da28d699f35561354769dbf7e31b8f91d6 [2024-11-20 02:03:58,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 02:03:58,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 02:03:58,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 02:03:58,643 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 02:03:58,643 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 02:03:58,644 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2c.c [2024-11-20 02:04:00,046 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 02:04:00,247 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 02:04:00,247 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2c.c [2024-11-20 02:04:00,255 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e4fa39ca/1079ae28e1c74b08a707b05f8f4ef8a4/FLAGf02090ce2 [2024-11-20 02:04:00,620 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e4fa39ca/1079ae28e1c74b08a707b05f8f4ef8a4 [2024-11-20 02:04:00,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 02:04:00,623 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 02:04:00,625 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 02:04:00,625 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 02:04:00,632 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 02:04:00,633 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:04:00" (1/1) ... [2024-11-20 02:04:00,634 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dc240f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:04:00, skipping insertion in model container [2024-11-20 02:04:00,634 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:04:00" (1/1) ... [2024-11-20 02:04:00,658 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 02:04:00,866 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2c.c[1260,1273] [2024-11-20 02:04:00,918 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 02:04:00,931 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 02:04:00,943 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2c.c[1260,1273] [2024-11-20 02:04:00,974 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 02:04:00,992 INFO L204 MainTranslator]: Completed translation [2024-11-20 02:04:00,993 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:04:00 WrapperNode [2024-11-20 02:04:00,993 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 02:04:00,995 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 02:04:00,995 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 02:04:00,995 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 02:04:01,004 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:04:00" (1/1) ... [2024-11-20 02:04:01,015 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:04:00" (1/1) ... [2024-11-20 02:04:01,063 INFO L138 Inliner]: procedures = 17, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 167 [2024-11-20 02:04:01,064 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 02:04:01,064 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 02:04:01,064 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 02:04:01,065 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 02:04:01,076 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:04:00" (1/1) ... [2024-11-20 02:04:01,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:04:00" (1/1) ... [2024-11-20 02:04:01,084 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:04:00" (1/1) ... [2024-11-20 02:04:01,111 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]. [2024-11-20 02:04:01,112 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:04:00" (1/1) ... [2024-11-20 02:04:01,112 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:04:00" (1/1) ... [2024-11-20 02:04:01,127 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:04:00" (1/1) ... [2024-11-20 02:04:01,131 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:04:00" (1/1) ... [2024-11-20 02:04:01,134 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:04:00" (1/1) ... [2024-11-20 02:04:01,137 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:04:00" (1/1) ... [2024-11-20 02:04:01,144 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 02:04:01,145 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 02:04:01,145 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 02:04:01,145 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 02:04:01,146 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:04:00" (1/1) ... [2024-11-20 02:04:01,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 02:04:01,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 02:04:01,189 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) [2024-11-20 02:04:01,192 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 [2024-11-20 02:04:01,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 02:04:01,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 02:04:01,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 02:04:01,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 02:04:01,313 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 02:04:01,316 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 02:04:01,738 INFO L? ?]: Removed 79 outVars from TransFormulas that were not future-live. [2024-11-20 02:04:01,738 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 02:04:01,753 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 02:04:01,754 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-20 02:04:01,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:04:01 BoogieIcfgContainer [2024-11-20 02:04:01,754 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 02:04:01,757 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 02:04:01,757 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 02:04:01,760 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 02:04:01,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 02:04:00" (1/3) ... [2024-11-20 02:04:01,762 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c227d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:04:01, skipping insertion in model container [2024-11-20 02:04:01,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:04:00" (2/3) ... [2024-11-20 02:04:01,762 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c227d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:04:01, skipping insertion in model container [2024-11-20 02:04:01,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:04:01" (3/3) ... [2024-11-20 02:04:01,764 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.twocount2c.c [2024-11-20 02:04:01,780 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 02:04:01,780 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-20 02:04:01,847 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 02:04:01,856 INFO L333 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, 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;@2d9b90f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 02:04:01,858 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-20 02:04:01,863 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 50 states have (on average 1.48) internal successors, (74), 51 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:01,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-20 02:04:01,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:04:01,871 INFO L215 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] [2024-11-20 02:04:01,871 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:04:01,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:04:01,877 INFO L85 PathProgramCache]: Analyzing trace with hash 295366475, now seen corresponding path program 1 times [2024-11-20 02:04:01,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:04:01,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522514893] [2024-11-20 02:04:01,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:01,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:04:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:02,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:04:02,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:04:02,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522514893] [2024-11-20 02:04:02,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522514893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 02:04:02,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 02:04:02,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 02:04:02,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178918210] [2024-11-20 02:04:02,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 02:04:02,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-20 02:04:02,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:04:02,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-20 02:04:02,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-20 02:04:02,143 INFO L87 Difference]: Start difference. First operand has 52 states, 50 states have (on average 1.48) internal successors, (74), 51 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:02,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:04:02,157 INFO L93 Difference]: Finished difference Result 91 states and 132 transitions. [2024-11-20 02:04:02,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-20 02:04:02,158 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-20 02:04:02,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:04:02,164 INFO L225 Difference]: With dead ends: 91 [2024-11-20 02:04:02,164 INFO L226 Difference]: Without dead ends: 49 [2024-11-20 02:04:02,167 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-20 02:04:02,170 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 02:04:02,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 02:04:02,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-20 02:04:02,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-11-20 02:04:02,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.4375) internal successors, (69), 48 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:02,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 69 transitions. [2024-11-20 02:04:02,198 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 69 transitions. Word has length 23 [2024-11-20 02:04:02,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:04:02,199 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 69 transitions. [2024-11-20 02:04:02,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:02,199 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 69 transitions. [2024-11-20 02:04:02,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-20 02:04:02,200 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:04:02,200 INFO L215 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] [2024-11-20 02:04:02,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 02:04:02,200 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:04:02,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:04:02,201 INFO L85 PathProgramCache]: Analyzing trace with hash -513980151, now seen corresponding path program 1 times [2024-11-20 02:04:02,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:04:02,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559941360] [2024-11-20 02:04:02,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:02,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:04:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:02,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:04:02,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:04:02,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559941360] [2024-11-20 02:04:02,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559941360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 02:04:02,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 02:04:02,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 02:04:02,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284528519] [2024-11-20 02:04:02,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 02:04:02,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 02:04:02,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:04:02,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 02:04:02,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 02:04:02,600 INFO L87 Difference]: Start difference. First operand 49 states and 69 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:02,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:04:02,735 INFO L93 Difference]: Finished difference Result 92 states and 130 transitions. [2024-11-20 02:04:02,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 02:04:02,736 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-20 02:04:02,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:04:02,738 INFO L225 Difference]: With dead ends: 92 [2024-11-20 02:04:02,738 INFO L226 Difference]: Without dead ends: 53 [2024-11-20 02:04:02,739 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 02:04:02,741 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 60 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 02:04:02,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 139 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 02:04:02,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-20 02:04:02,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2024-11-20 02:04:02,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.411764705882353) internal successors, (72), 51 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:02,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 72 transitions. [2024-11-20 02:04:02,750 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 72 transitions. Word has length 23 [2024-11-20 02:04:02,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:04:02,750 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 72 transitions. [2024-11-20 02:04:02,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:02,751 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 72 transitions. [2024-11-20 02:04:02,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-20 02:04:02,752 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:04:02,752 INFO L215 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] [2024-11-20 02:04:02,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 02:04:02,753 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:04:02,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:04:02,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1380097225, now seen corresponding path program 1 times [2024-11-20 02:04:02,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:04:02,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813120750] [2024-11-20 02:04:02,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:02,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:04:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:02,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:04:02,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:04:02,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813120750] [2024-11-20 02:04:02,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813120750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 02:04:02,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 02:04:02,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 02:04:02,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165168081] [2024-11-20 02:04:02,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 02:04:02,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 02:04:02,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:04:02,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 02:04:02,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 02:04:02,942 INFO L87 Difference]: Start difference. First operand 52 states and 72 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:02,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:04:02,976 INFO L93 Difference]: Finished difference Result 96 states and 133 transitions. [2024-11-20 02:04:02,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 02:04:02,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-20 02:04:02,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:04:02,979 INFO L225 Difference]: With dead ends: 96 [2024-11-20 02:04:02,980 INFO L226 Difference]: Without dead ends: 54 [2024-11-20 02:04:02,981 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 02:04:02,982 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 02:04:02,982 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 191 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 02:04:02,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-20 02:04:02,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-20 02:04:02,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.3962264150943395) internal successors, (74), 53 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:02,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 74 transitions. [2024-11-20 02:04:02,990 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 74 transitions. Word has length 24 [2024-11-20 02:04:02,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:04:02,990 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 74 transitions. [2024-11-20 02:04:02,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:02,991 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 74 transitions. [2024-11-20 02:04:02,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-20 02:04:02,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:04:02,991 INFO L215 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] [2024-11-20 02:04:02,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 02:04:02,992 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:04:02,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:04:02,997 INFO L85 PathProgramCache]: Analyzing trace with hash -973063290, now seen corresponding path program 1 times [2024-11-20 02:04:02,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:04:02,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212903946] [2024-11-20 02:04:02,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:02,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:04:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:03,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:04:03,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:04:03,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212903946] [2024-11-20 02:04:03,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212903946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 02:04:03,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 02:04:03,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 02:04:03,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72977948] [2024-11-20 02:04:03,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 02:04:03,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 02:04:03,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:04:03,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 02:04:03,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 02:04:03,162 INFO L87 Difference]: Start difference. First operand 54 states and 74 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:03,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:04:03,188 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2024-11-20 02:04:03,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 02:04:03,188 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-20 02:04:03,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:04:03,189 INFO L225 Difference]: With dead ends: 58 [2024-11-20 02:04:03,189 INFO L226 Difference]: Without dead ends: 56 [2024-11-20 02:04:03,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 02:04:03,190 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 02:04:03,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 195 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 02:04:03,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-20 02:04:03,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-20 02:04:03,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.3818181818181818) internal successors, (76), 55 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:03,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions. [2024-11-20 02:04:03,202 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 76 transitions. Word has length 25 [2024-11-20 02:04:03,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:04:03,202 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 76 transitions. [2024-11-20 02:04:03,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:03,205 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 76 transitions. [2024-11-20 02:04:03,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-20 02:04:03,205 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:04:03,206 INFO L215 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] [2024-11-20 02:04:03,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 02:04:03,206 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:04:03,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:04:03,206 INFO L85 PathProgramCache]: Analyzing trace with hash -98495654, now seen corresponding path program 1 times [2024-11-20 02:04:03,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:04:03,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703592212] [2024-11-20 02:04:03,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:03,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:04:03,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:03,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:04:03,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:04:03,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703592212] [2024-11-20 02:04:03,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703592212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 02:04:03,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 02:04:03,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 02:04:03,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447489621] [2024-11-20 02:04:03,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 02:04:03,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 02:04:03,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:04:03,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 02:04:03,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 02:04:03,308 INFO L87 Difference]: Start difference. First operand 56 states and 76 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:03,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:04:03,357 INFO L93 Difference]: Finished difference Result 104 states and 141 transitions. [2024-11-20 02:04:03,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 02:04:03,358 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-20 02:04:03,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:04:03,358 INFO L225 Difference]: With dead ends: 104 [2024-11-20 02:04:03,358 INFO L226 Difference]: Without dead ends: 58 [2024-11-20 02:04:03,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 02:04:03,360 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 02:04:03,360 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 191 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 02:04:03,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-20 02:04:03,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-20 02:04:03,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.368421052631579) internal successors, (78), 57 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:03,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 78 transitions. [2024-11-20 02:04:03,372 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 78 transitions. Word has length 26 [2024-11-20 02:04:03,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:04:03,373 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 78 transitions. [2024-11-20 02:04:03,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:03,373 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 78 transitions. [2024-11-20 02:04:03,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-20 02:04:03,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:04:03,375 INFO L215 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] [2024-11-20 02:04:03,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 02:04:03,376 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:04:03,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:04:03,376 INFO L85 PathProgramCache]: Analyzing trace with hash 143636191, now seen corresponding path program 1 times [2024-11-20 02:04:03,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:04:03,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496455339] [2024-11-20 02:04:03,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:03,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:04:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:03,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:04:03,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:04:03,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496455339] [2024-11-20 02:04:03,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496455339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 02:04:03,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 02:04:03,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 02:04:03,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282393021] [2024-11-20 02:04:03,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 02:04:03,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 02:04:03,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:04:03,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 02:04:03,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 02:04:03,635 INFO L87 Difference]: Start difference. First operand 58 states and 78 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:03,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:04:03,681 INFO L93 Difference]: Finished difference Result 136 states and 181 transitions. [2024-11-20 02:04:03,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 02:04:03,682 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-20 02:04:03,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:04:03,683 INFO L225 Difference]: With dead ends: 136 [2024-11-20 02:04:03,685 INFO L226 Difference]: Without dead ends: 88 [2024-11-20 02:04:03,685 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 02:04:03,686 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 28 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 02:04:03,686 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 241 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 02:04:03,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-20 02:04:03,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 83. [2024-11-20 02:04:03,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.353658536585366) internal successors, (111), 82 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:03,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 111 transitions. [2024-11-20 02:04:03,697 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 111 transitions. Word has length 27 [2024-11-20 02:04:03,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:04:03,698 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 111 transitions. [2024-11-20 02:04:03,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:03,698 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 111 transitions. [2024-11-20 02:04:03,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-20 02:04:03,699 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:04:03,699 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-20 02:04:03,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 02:04:03,699 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:04:03,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:04:03,700 INFO L85 PathProgramCache]: Analyzing trace with hash -978979684, now seen corresponding path program 1 times [2024-11-20 02:04:03,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:04:03,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739978984] [2024-11-20 02:04:03,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:03,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:04:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:04,119 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:04:04,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:04:04,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739978984] [2024-11-20 02:04:04,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739978984] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 02:04:04,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645748040] [2024-11-20 02:04:04,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:04,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 02:04:04,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 02:04:04,123 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) [2024-11-20 02:04:04,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 02:04:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:04,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-20 02:04:04,247 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 02:04:04,597 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 02:04:04,599 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 02:04:04,980 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:04:04,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645748040] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 02:04:04,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 02:04:04,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 9] total 18 [2024-11-20 02:04:04,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042047124] [2024-11-20 02:04:04,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 02:04:04,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-20 02:04:04,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:04:04,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-20 02:04:04,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2024-11-20 02:04:04,989 INFO L87 Difference]: Start difference. First operand 83 states and 111 transitions. Second operand has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:05,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:04:05,190 INFO L93 Difference]: Finished difference Result 171 states and 226 transitions. [2024-11-20 02:04:05,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 02:04:05,190 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-20 02:04:05,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:04:05,193 INFO L225 Difference]: With dead ends: 171 [2024-11-20 02:04:05,193 INFO L226 Difference]: Without dead ends: 123 [2024-11-20 02:04:05,193 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2024-11-20 02:04:05,194 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 163 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 02:04:05,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 421 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 02:04:05,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-20 02:04:05,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 88. [2024-11-20 02:04:05,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.3563218390804597) internal successors, (118), 87 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:05,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 118 transitions. [2024-11-20 02:04:05,207 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 118 transitions. Word has length 50 [2024-11-20 02:04:05,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:04:05,207 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 118 transitions. [2024-11-20 02:04:05,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:05,207 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 118 transitions. [2024-11-20 02:04:05,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-20 02:04:05,211 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:04:05,211 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-20 02:04:05,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 02:04:05,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 02:04:05,413 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:04:05,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:04:05,413 INFO L85 PathProgramCache]: Analyzing trace with hash -421630039, now seen corresponding path program 1 times [2024-11-20 02:04:05,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:04:05,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140542003] [2024-11-20 02:04:05,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:05,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:04:05,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:05,820 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:04:05,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:04:05,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140542003] [2024-11-20 02:04:05,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140542003] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 02:04:05,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825743578] [2024-11-20 02:04:05,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:05,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 02:04:05,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 02:04:05,824 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) [2024-11-20 02:04:05,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 02:04:05,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:05,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-20 02:04:05,944 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 02:04:06,149 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:04:06,149 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 02:04:06,410 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:04:06,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825743578] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 02:04:06,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 02:04:06,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2024-11-20 02:04:06,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228134164] [2024-11-20 02:04:06,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 02:04:06,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-20 02:04:06,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:04:06,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-20 02:04:06,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-11-20 02:04:06,413 INFO L87 Difference]: Start difference. First operand 88 states and 118 transitions. Second operand has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:06,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:04:06,794 INFO L93 Difference]: Finished difference Result 228 states and 303 transitions. [2024-11-20 02:04:06,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 02:04:06,795 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-20 02:04:06,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:04:06,796 INFO L225 Difference]: With dead ends: 228 [2024-11-20 02:04:06,796 INFO L226 Difference]: Without dead ends: 150 [2024-11-20 02:04:06,797 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2024-11-20 02:04:06,798 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 87 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 02:04:06,798 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 545 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 02:04:06,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-20 02:04:06,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 88. [2024-11-20 02:04:06,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.3563218390804597) internal successors, (118), 87 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:06,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 118 transitions. [2024-11-20 02:04:06,803 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 118 transitions. Word has length 51 [2024-11-20 02:04:06,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:04:06,804 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 118 transitions. [2024-11-20 02:04:06,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:06,804 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 118 transitions. [2024-11-20 02:04:06,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-20 02:04:06,805 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:04:06,805 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-20 02:04:06,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 02:04:07,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-20 02:04:07,010 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:04:07,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:04:07,010 INFO L85 PathProgramCache]: Analyzing trace with hash -587990621, now seen corresponding path program 1 times [2024-11-20 02:04:07,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:04:07,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059326169] [2024-11-20 02:04:07,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:07,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:04:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:07,352 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:04:07,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:04:07,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059326169] [2024-11-20 02:04:07,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059326169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 02:04:07,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 02:04:07,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 02:04:07,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104927642] [2024-11-20 02:04:07,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 02:04:07,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 02:04:07,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:04:07,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 02:04:07,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-20 02:04:07,355 INFO L87 Difference]: Start difference. First operand 88 states and 118 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:07,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:04:07,464 INFO L93 Difference]: Finished difference Result 221 states and 291 transitions. [2024-11-20 02:04:07,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 02:04:07,465 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-20 02:04:07,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:04:07,467 INFO L225 Difference]: With dead ends: 221 [2024-11-20 02:04:07,467 INFO L226 Difference]: Without dead ends: 143 [2024-11-20 02:04:07,468 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-20 02:04:07,469 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 45 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 02:04:07,469 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 256 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 02:04:07,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-20 02:04:07,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 114. [2024-11-20 02:04:07,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.3185840707964602) internal successors, (149), 113 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:07,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 149 transitions. [2024-11-20 02:04:07,483 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 149 transitions. Word has length 52 [2024-11-20 02:04:07,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:04:07,483 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 149 transitions. [2024-11-20 02:04:07,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:07,484 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 149 transitions. [2024-11-20 02:04:07,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-20 02:04:07,485 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:04:07,485 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-20 02:04:07,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 02:04:07,485 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:04:07,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:04:07,489 INFO L85 PathProgramCache]: Analyzing trace with hash -550870329, now seen corresponding path program 1 times [2024-11-20 02:04:07,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:04:07,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762649918] [2024-11-20 02:04:07,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:07,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:04:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:07,659 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-20 02:04:07,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:04:07,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762649918] [2024-11-20 02:04:07,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762649918] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 02:04:07,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 02:04:07,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 02:04:07,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503250595] [2024-11-20 02:04:07,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 02:04:07,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 02:04:07,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:04:07,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 02:04:07,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 02:04:07,662 INFO L87 Difference]: Start difference. First operand 114 states and 149 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:07,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:04:07,699 INFO L93 Difference]: Finished difference Result 256 states and 328 transitions. [2024-11-20 02:04:07,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 02:04:07,699 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-20 02:04:07,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:04:07,701 INFO L225 Difference]: With dead ends: 256 [2024-11-20 02:04:07,701 INFO L226 Difference]: Without dead ends: 178 [2024-11-20 02:04:07,701 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-20 02:04:07,702 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 27 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 02:04:07,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 303 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 02:04:07,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-20 02:04:07,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 124. [2024-11-20 02:04:07,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.3333333333333333) internal successors, (164), 123 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:07,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 164 transitions. [2024-11-20 02:04:07,714 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 164 transitions. Word has length 52 [2024-11-20 02:04:07,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:04:07,714 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 164 transitions. [2024-11-20 02:04:07,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:07,714 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 164 transitions. [2024-11-20 02:04:07,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-20 02:04:07,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:04:07,715 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-20 02:04:07,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-20 02:04:07,720 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:04:07,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:04:07,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1765079492, now seen corresponding path program 1 times [2024-11-20 02:04:07,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:04:07,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592519376] [2024-11-20 02:04:07,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:07,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:04:07,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:08,064 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:04:08,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:04:08,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592519376] [2024-11-20 02:04:08,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592519376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 02:04:08,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 02:04:08,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 02:04:08,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761070624] [2024-11-20 02:04:08,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 02:04:08,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 02:04:08,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:04:08,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 02:04:08,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-20 02:04:08,067 INFO L87 Difference]: Start difference. First operand 124 states and 164 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:08,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:04:08,172 INFO L93 Difference]: Finished difference Result 270 states and 349 transitions. [2024-11-20 02:04:08,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 02:04:08,172 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-20 02:04:08,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:04:08,174 INFO L225 Difference]: With dead ends: 270 [2024-11-20 02:04:08,174 INFO L226 Difference]: Without dead ends: 180 [2024-11-20 02:04:08,175 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-20 02:04:08,176 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 41 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 02:04:08,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 256 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 02:04:08,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-20 02:04:08,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 158. [2024-11-20 02:04:08,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.267515923566879) internal successors, (199), 157 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:08,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 199 transitions. [2024-11-20 02:04:08,184 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 199 transitions. Word has length 53 [2024-11-20 02:04:08,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:04:08,188 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 199 transitions. [2024-11-20 02:04:08,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:08,188 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 199 transitions. [2024-11-20 02:04:08,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-20 02:04:08,189 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:04:08,189 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-20 02:04:08,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-20 02:04:08,190 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:04:08,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:04:08,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1108900487, now seen corresponding path program 1 times [2024-11-20 02:04:08,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:04:08,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974543902] [2024-11-20 02:04:08,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:08,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:04:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:08,641 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:04:08,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:04:08,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974543902] [2024-11-20 02:04:08,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974543902] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 02:04:08,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320689910] [2024-11-20 02:04:08,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:08,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 02:04:08,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 02:04:08,645 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) [2024-11-20 02:04:08,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 02:04:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:08,763 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-20 02:04:08,768 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 02:04:08,914 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-20 02:04:08,915 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 02:04:08,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320689910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 02:04:08,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 02:04:08,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-11-20 02:04:08,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881653311] [2024-11-20 02:04:08,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 02:04:08,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 02:04:08,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:04:08,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 02:04:08,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2024-11-20 02:04:08,919 INFO L87 Difference]: Start difference. First operand 158 states and 199 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:09,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:04:09,109 INFO L93 Difference]: Finished difference Result 326 states and 418 transitions. [2024-11-20 02:04:09,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 02:04:09,110 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-20 02:04:09,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:04:09,111 INFO L225 Difference]: With dead ends: 326 [2024-11-20 02:04:09,111 INFO L226 Difference]: Without dead ends: 240 [2024-11-20 02:04:09,111 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2024-11-20 02:04:09,112 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 95 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 02:04:09,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 314 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 02:04:09,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-20 02:04:09,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 174. [2024-11-20 02:04:09,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.2947976878612717) internal successors, (224), 173 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:09,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 224 transitions. [2024-11-20 02:04:09,117 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 224 transitions. Word has length 53 [2024-11-20 02:04:09,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:04:09,117 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 224 transitions. [2024-11-20 02:04:09,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:09,117 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 224 transitions. [2024-11-20 02:04:09,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-20 02:04:09,118 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:04:09,118 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-20 02:04:09,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 02:04:09,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 02:04:09,320 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:04:09,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:04:09,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1884145206, now seen corresponding path program 1 times [2024-11-20 02:04:09,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:04:09,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486079713] [2024-11-20 02:04:09,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:09,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:04:09,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:09,586 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-20 02:04:09,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:04:09,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486079713] [2024-11-20 02:04:09,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486079713] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 02:04:09,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 02:04:09,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 02:04:09,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231763931] [2024-11-20 02:04:09,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 02:04:09,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 02:04:09,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:04:09,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 02:04:09,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-20 02:04:09,589 INFO L87 Difference]: Start difference. First operand 174 states and 224 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:09,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:04:09,717 INFO L93 Difference]: Finished difference Result 340 states and 440 transitions. [2024-11-20 02:04:09,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 02:04:09,718 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-20 02:04:09,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:04:09,719 INFO L225 Difference]: With dead ends: 340 [2024-11-20 02:04:09,719 INFO L226 Difference]: Without dead ends: 240 [2024-11-20 02:04:09,719 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-20 02:04:09,720 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 78 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 02:04:09,720 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 277 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 02:04:09,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-20 02:04:09,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 178. [2024-11-20 02:04:09,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 1.2881355932203389) internal successors, (228), 177 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:09,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 228 transitions. [2024-11-20 02:04:09,725 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 228 transitions. Word has length 54 [2024-11-20 02:04:09,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:04:09,725 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 228 transitions. [2024-11-20 02:04:09,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:09,725 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 228 transitions. [2024-11-20 02:04:09,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-20 02:04:09,726 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:04:09,726 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-20 02:04:09,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-20 02:04:09,726 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:04:09,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:04:09,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1172750294, now seen corresponding path program 1 times [2024-11-20 02:04:09,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:04:09,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045951550] [2024-11-20 02:04:09,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:09,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:04:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:09,991 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-20 02:04:09,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:04:09,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045951550] [2024-11-20 02:04:09,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045951550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 02:04:09,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 02:04:09,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 02:04:09,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101611273] [2024-11-20 02:04:09,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 02:04:09,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 02:04:09,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:04:09,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 02:04:09,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-20 02:04:09,994 INFO L87 Difference]: Start difference. First operand 178 states and 228 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:10,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:04:10,094 INFO L93 Difference]: Finished difference Result 312 states and 410 transitions. [2024-11-20 02:04:10,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 02:04:10,095 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-20 02:04:10,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:04:10,096 INFO L225 Difference]: With dead ends: 312 [2024-11-20 02:04:10,096 INFO L226 Difference]: Without dead ends: 208 [2024-11-20 02:04:10,097 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-20 02:04:10,097 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 61 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 02:04:10,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 210 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 02:04:10,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-20 02:04:10,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 186. [2024-11-20 02:04:10,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.2972972972972974) internal successors, (240), 185 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:10,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 240 transitions. [2024-11-20 02:04:10,102 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 240 transitions. Word has length 54 [2024-11-20 02:04:10,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:04:10,102 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 240 transitions. [2024-11-20 02:04:10,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:10,103 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 240 transitions. [2024-11-20 02:04:10,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-20 02:04:10,103 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:04:10,103 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-20 02:04:10,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-20 02:04:10,104 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:04:10,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:04:10,104 INFO L85 PathProgramCache]: Analyzing trace with hash 341705372, now seen corresponding path program 1 times [2024-11-20 02:04:10,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:04:10,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060868055] [2024-11-20 02:04:10,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:10,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:04:10,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:10,443 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:04:10,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:04:10,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060868055] [2024-11-20 02:04:10,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060868055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 02:04:10,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 02:04:10,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 02:04:10,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911458139] [2024-11-20 02:04:10,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 02:04:10,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 02:04:10,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:04:10,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 02:04:10,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 02:04:10,445 INFO L87 Difference]: Start difference. First operand 186 states and 240 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:10,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:04:10,511 INFO L93 Difference]: Finished difference Result 336 states and 444 transitions. [2024-11-20 02:04:10,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 02:04:10,512 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-20 02:04:10,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:04:10,513 INFO L225 Difference]: With dead ends: 336 [2024-11-20 02:04:10,513 INFO L226 Difference]: Without dead ends: 222 [2024-11-20 02:04:10,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 02:04:10,514 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 20 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 02:04:10,514 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 182 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 02:04:10,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-20 02:04:10,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 221. [2024-11-20 02:04:10,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.2954545454545454) internal successors, (285), 220 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:10,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 285 transitions. [2024-11-20 02:04:10,521 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 285 transitions. Word has length 55 [2024-11-20 02:04:10,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:04:10,522 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 285 transitions. [2024-11-20 02:04:10,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:10,522 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 285 transitions. [2024-11-20 02:04:10,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-20 02:04:10,523 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:04:10,523 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-20 02:04:10,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-20 02:04:10,523 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:04:10,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:04:10,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1297937652, now seen corresponding path program 1 times [2024-11-20 02:04:10,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:04:10,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12424858] [2024-11-20 02:04:10,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:10,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:04:10,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:10,871 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:04:10,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:04:10,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12424858] [2024-11-20 02:04:10,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12424858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 02:04:10,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 02:04:10,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 02:04:10,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302244190] [2024-11-20 02:04:10,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 02:04:10,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 02:04:10,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:04:10,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 02:04:10,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 02:04:10,874 INFO L87 Difference]: Start difference. First operand 221 states and 285 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:10,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:04:10,948 INFO L93 Difference]: Finished difference Result 342 states and 452 transitions. [2024-11-20 02:04:10,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 02:04:10,948 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-20 02:04:10,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:04:10,949 INFO L225 Difference]: With dead ends: 342 [2024-11-20 02:04:10,949 INFO L226 Difference]: Without dead ends: 230 [2024-11-20 02:04:10,950 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 02:04:10,950 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 21 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 02:04:10,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 176 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 02:04:10,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-11-20 02:04:10,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 228. [2024-11-20 02:04:10,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.2951541850220265) internal successors, (294), 227 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:10,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 294 transitions. [2024-11-20 02:04:10,957 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 294 transitions. Word has length 56 [2024-11-20 02:04:10,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:04:10,957 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 294 transitions. [2024-11-20 02:04:10,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:10,957 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 294 transitions. [2024-11-20 02:04:10,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-20 02:04:10,959 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:04:10,959 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-20 02:04:10,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-20 02:04:10,961 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:04:10,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:04:10,962 INFO L85 PathProgramCache]: Analyzing trace with hash 618326395, now seen corresponding path program 1 times [2024-11-20 02:04:10,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:04:10,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385986997] [2024-11-20 02:04:10,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:10,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:04:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:11,649 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:04:11,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:04:11,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385986997] [2024-11-20 02:04:11,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385986997] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 02:04:11,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572846627] [2024-11-20 02:04:11,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:11,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 02:04:11,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 02:04:11,653 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) [2024-11-20 02:04:11,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 02:04:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:11,786 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-20 02:04:11,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 02:04:12,535 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:04:12,535 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 02:04:14,748 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:04:14,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572846627] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 02:04:14,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 02:04:14,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 15] total 32 [2024-11-20 02:04:14,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030575518] [2024-11-20 02:04:14,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 02:04:14,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-20 02:04:14,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:04:14,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-20 02:04:14,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=842, Unknown=0, NotChecked=0, Total=992 [2024-11-20 02:04:14,752 INFO L87 Difference]: Start difference. First operand 228 states and 294 transitions. Second operand has 32 states, 32 states have (on average 4.46875) internal successors, (143), 32 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:15,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:04:15,743 INFO L93 Difference]: Finished difference Result 470 states and 616 transitions. [2024-11-20 02:04:15,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-20 02:04:15,745 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.46875) internal successors, (143), 32 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-20 02:04:15,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:04:15,746 INFO L225 Difference]: With dead ends: 470 [2024-11-20 02:04:15,746 INFO L226 Difference]: Without dead ends: 358 [2024-11-20 02:04:15,747 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=299, Invalid=1423, Unknown=0, NotChecked=0, Total=1722 [2024-11-20 02:04:15,748 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 130 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-20 02:04:15,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 522 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-20 02:04:15,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2024-11-20 02:04:15,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 243. [2024-11-20 02:04:15,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.2768595041322315) internal successors, (309), 242 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:15,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 309 transitions. [2024-11-20 02:04:15,754 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 309 transitions. Word has length 57 [2024-11-20 02:04:15,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:04:15,754 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 309 transitions. [2024-11-20 02:04:15,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.46875) internal successors, (143), 32 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:15,754 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 309 transitions. [2024-11-20 02:04:15,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-20 02:04:15,755 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:04:15,755 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 02:04:15,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-20 02:04:15,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-20 02:04:15,956 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:04:15,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:04:15,957 INFO L85 PathProgramCache]: Analyzing trace with hash 182368902, now seen corresponding path program 1 times [2024-11-20 02:04:15,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:04:15,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86881971] [2024-11-20 02:04:15,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:15,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:04:16,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:16,376 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:04:16,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:04:16,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86881971] [2024-11-20 02:04:16,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86881971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 02:04:16,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 02:04:16,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-20 02:04:16,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53630445] [2024-11-20 02:04:16,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 02:04:16,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 02:04:16,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:04:16,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 02:04:16,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-20 02:04:16,379 INFO L87 Difference]: Start difference. First operand 243 states and 309 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:16,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:04:16,491 INFO L93 Difference]: Finished difference Result 427 states and 553 transitions. [2024-11-20 02:04:16,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 02:04:16,491 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-20 02:04:16,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:04:16,493 INFO L225 Difference]: With dead ends: 427 [2024-11-20 02:04:16,493 INFO L226 Difference]: Without dead ends: 315 [2024-11-20 02:04:16,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-20 02:04:16,495 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 85 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 02:04:16,495 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 393 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 02:04:16,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-11-20 02:04:16,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 274. [2024-11-20 02:04:16,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 1.26007326007326) internal successors, (344), 273 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:16,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 344 transitions. [2024-11-20 02:04:16,503 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 344 transitions. Word has length 75 [2024-11-20 02:04:16,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:04:16,503 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 344 transitions. [2024-11-20 02:04:16,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:16,504 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 344 transitions. [2024-11-20 02:04:16,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-20 02:04:16,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:04:16,505 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-20 02:04:16,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-20 02:04:16,506 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:04:16,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:04:16,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1260287954, now seen corresponding path program 1 times [2024-11-20 02:04:16,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:04:16,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387017060] [2024-11-20 02:04:16,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:16,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:04:16,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:16,865 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:04:16,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:04:16,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387017060] [2024-11-20 02:04:16,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387017060] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 02:04:16,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 02:04:16,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 02:04:16,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727275132] [2024-11-20 02:04:16,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 02:04:16,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 02:04:16,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:04:16,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 02:04:16,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-20 02:04:16,866 INFO L87 Difference]: Start difference. First operand 274 states and 344 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:16,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:04:16,978 INFO L93 Difference]: Finished difference Result 523 states and 663 transitions. [2024-11-20 02:04:16,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 02:04:16,979 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-20 02:04:16,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:04:16,981 INFO L225 Difference]: With dead ends: 523 [2024-11-20 02:04:16,981 INFO L226 Difference]: Without dead ends: 388 [2024-11-20 02:04:16,982 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-20 02:04:16,982 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 81 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 02:04:16,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 330 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 02:04:16,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2024-11-20 02:04:16,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 307. [2024-11-20 02:04:16,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 1.261437908496732) internal successors, (386), 306 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:16,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 386 transitions. [2024-11-20 02:04:16,992 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 386 transitions. Word has length 76 [2024-11-20 02:04:16,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:04:16,992 INFO L471 AbstractCegarLoop]: Abstraction has 307 states and 386 transitions. [2024-11-20 02:04:16,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:16,992 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 386 transitions. [2024-11-20 02:04:16,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-20 02:04:16,993 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:04:16,993 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-20 02:04:16,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-20 02:04:16,993 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:04:16,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:04:16,994 INFO L85 PathProgramCache]: Analyzing trace with hash 2111992537, now seen corresponding path program 1 times [2024-11-20 02:04:16,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:04:16,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755513957] [2024-11-20 02:04:16,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:16,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:04:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:17,404 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:04:17,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:04:17,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755513957] [2024-11-20 02:04:17,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755513957] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 02:04:17,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055844665] [2024-11-20 02:04:17,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:17,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 02:04:17,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 02:04:17,408 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 02:04:17,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 02:04:17,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:17,564 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 106 conjuncts are in the unsatisfiable core [2024-11-20 02:04:17,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 02:04:18,359 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:04:18,360 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 02:04:19,766 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:04:19,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055844665] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 02:04:19,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 02:04:19,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 16, 17] total 36 [2024-11-20 02:04:19,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020669813] [2024-11-20 02:04:19,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 02:04:19,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-20 02:04:19,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:04:19,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-20 02:04:19,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1049, Unknown=0, NotChecked=0, Total=1260 [2024-11-20 02:04:19,770 INFO L87 Difference]: Start difference. First operand 307 states and 386 transitions. Second operand has 36 states, 36 states have (on average 5.666666666666667) internal successors, (204), 36 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:21,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:04:21,820 INFO L93 Difference]: Finished difference Result 944 states and 1195 transitions. [2024-11-20 02:04:21,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-20 02:04:21,821 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.666666666666667) internal successors, (204), 36 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-20 02:04:21,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:04:21,823 INFO L225 Difference]: With dead ends: 944 [2024-11-20 02:04:21,824 INFO L226 Difference]: Without dead ends: 760 [2024-11-20 02:04:21,827 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2190 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1188, Invalid=5952, Unknown=0, NotChecked=0, Total=7140 [2024-11-20 02:04:21,828 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 530 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-20 02:04:21,828 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 1363 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1101 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-20 02:04:21,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2024-11-20 02:04:21,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 492. [2024-11-20 02:04:21,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 491 states have (on average 1.2993890020366599) internal successors, (638), 491 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:21,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 638 transitions. [2024-11-20 02:04:21,838 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 638 transitions. Word has length 78 [2024-11-20 02:04:21,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:04:21,839 INFO L471 AbstractCegarLoop]: Abstraction has 492 states and 638 transitions. [2024-11-20 02:04:21,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.666666666666667) internal successors, (204), 36 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:21,839 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 638 transitions. [2024-11-20 02:04:21,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-20 02:04:21,840 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:04:21,840 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-20 02:04:21,849 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-20 02:04:22,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 02:04:22,045 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:04:22,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:04:22,046 INFO L85 PathProgramCache]: Analyzing trace with hash 943758542, now seen corresponding path program 1 times [2024-11-20 02:04:22,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:04:22,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755645312] [2024-11-20 02:04:22,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:22,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:04:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:22,410 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:04:22,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:04:22,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755645312] [2024-11-20 02:04:22,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755645312] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 02:04:22,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060781494] [2024-11-20 02:04:22,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:22,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 02:04:22,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 02:04:22,414 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 02:04:22,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 02:04:22,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:22,586 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-20 02:04:22,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 02:04:22,956 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 39 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:04:22,956 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 02:04:23,298 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 35 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:04:23,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060781494] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 02:04:23,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 02:04:23,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 10] total 22 [2024-11-20 02:04:23,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898635536] [2024-11-20 02:04:23,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 02:04:23,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-20 02:04:23,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:04:23,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-20 02:04:23,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2024-11-20 02:04:23,300 INFO L87 Difference]: Start difference. First operand 492 states and 638 transitions. Second operand has 22 states, 22 states have (on average 8.772727272727273) internal successors, (193), 22 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:24,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:04:24,446 INFO L93 Difference]: Finished difference Result 1682 states and 2083 transitions. [2024-11-20 02:04:24,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-20 02:04:24,447 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.772727272727273) internal successors, (193), 22 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-11-20 02:04:24,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:04:24,453 INFO L225 Difference]: With dead ends: 1682 [2024-11-20 02:04:24,453 INFO L226 Difference]: Without dead ends: 1322 [2024-11-20 02:04:24,454 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=302, Invalid=1338, Unknown=0, NotChecked=0, Total=1640 [2024-11-20 02:04:24,455 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 297 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 1965 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 1972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-20 02:04:24,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1272 Invalid, 1972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1965 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-20 02:04:24,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2024-11-20 02:04:24,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 707. [2024-11-20 02:04:24,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 706 states have (on average 1.2762039660056657) internal successors, (901), 706 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:24,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 901 transitions. [2024-11-20 02:04:24,483 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 901 transitions. Word has length 79 [2024-11-20 02:04:24,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:04:24,484 INFO L471 AbstractCegarLoop]: Abstraction has 707 states and 901 transitions. [2024-11-20 02:04:24,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.772727272727273) internal successors, (193), 22 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:24,484 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 901 transitions. [2024-11-20 02:04:24,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-20 02:04:24,485 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:04:24,486 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-20 02:04:24,499 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-20 02:04:24,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 02:04:24,690 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:04:24,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:04:24,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1057242744, now seen corresponding path program 1 times [2024-11-20 02:04:24,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:04:24,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053715277] [2024-11-20 02:04:24,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:24,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:04:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:25,628 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 27 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:04:25,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:04:25,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053715277] [2024-11-20 02:04:25,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053715277] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 02:04:25,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634043691] [2024-11-20 02:04:25,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:25,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 02:04:25,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 02:04:25,631 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 02:04:25,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 02:04:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:25,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-20 02:04:25,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 02:04:26,648 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 20 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:04:26,648 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 02:04:28,504 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:04:28,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634043691] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 02:04:28,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 02:04:28,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 18, 16] total 42 [2024-11-20 02:04:28,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906606456] [2024-11-20 02:04:28,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 02:04:28,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-20 02:04:28,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:04:28,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-20 02:04:28,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=1502, Unknown=0, NotChecked=0, Total=1722 [2024-11-20 02:04:28,507 INFO L87 Difference]: Start difference. First operand 707 states and 901 transitions. Second operand has 42 states, 42 states have (on average 5.333333333333333) internal successors, (224), 42 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:32,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:04:32,540 INFO L93 Difference]: Finished difference Result 2331 states and 2903 transitions. [2024-11-20 02:04:32,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-11-20 02:04:32,543 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 5.333333333333333) internal successors, (224), 42 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-20 02:04:32,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:04:32,548 INFO L225 Difference]: With dead ends: 2331 [2024-11-20 02:04:32,549 INFO L226 Difference]: Without dead ends: 1749 [2024-11-20 02:04:32,554 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4746 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2107, Invalid=13643, Unknown=0, NotChecked=0, Total=15750 [2024-11-20 02:04:32,558 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 603 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 2276 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 2310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-20 02:04:32,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 836 Invalid, 2310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2276 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-20 02:04:32,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1749 states. [2024-11-20 02:04:32,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1749 to 1009. [2024-11-20 02:04:32,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1009 states, 1008 states have (on average 1.2926587301587302) internal successors, (1303), 1008 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:32,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1303 transitions. [2024-11-20 02:04:32,588 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1303 transitions. Word has length 80 [2024-11-20 02:04:32,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:04:32,589 INFO L471 AbstractCegarLoop]: Abstraction has 1009 states and 1303 transitions. [2024-11-20 02:04:32,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 5.333333333333333) internal successors, (224), 42 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:32,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1303 transitions. [2024-11-20 02:04:32,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-20 02:04:32,591 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:04:32,591 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-20 02:04:32,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-20 02:04:32,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 02:04:32,792 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:04:32,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:04:32,793 INFO L85 PathProgramCache]: Analyzing trace with hash 766750343, now seen corresponding path program 1 times [2024-11-20 02:04:32,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:04:32,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791940292] [2024-11-20 02:04:32,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:32,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:04:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:33,644 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 41 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 02:04:33,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:04:33,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791940292] [2024-11-20 02:04:33,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791940292] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 02:04:33,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899711839] [2024-11-20 02:04:33,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:33,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 02:04:33,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 02:04:33,649 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 02:04:33,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 02:04:33,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:33,827 INFO L255 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-20 02:04:33,831 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 02:04:34,525 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 48 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:04:34,526 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 02:04:35,652 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 37 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:04:35,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899711839] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 02:04:35,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 02:04:35,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 16, 17] total 40 [2024-11-20 02:04:35,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506736997] [2024-11-20 02:04:35,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 02:04:35,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-20 02:04:35,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:04:35,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-20 02:04:35,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1360, Unknown=0, NotChecked=0, Total=1560 [2024-11-20 02:04:35,655 INFO L87 Difference]: Start difference. First operand 1009 states and 1303 transitions. Second operand has 40 states, 40 states have (on average 5.0) internal successors, (200), 40 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:38,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:04:38,240 INFO L93 Difference]: Finished difference Result 2773 states and 3488 transitions. [2024-11-20 02:04:38,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-20 02:04:38,240 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 5.0) internal successors, (200), 40 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-11-20 02:04:38,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:04:38,246 INFO L225 Difference]: With dead ends: 2773 [2024-11-20 02:04:38,246 INFO L226 Difference]: Without dead ends: 1826 [2024-11-20 02:04:38,249 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1697 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1082, Invalid=6400, Unknown=0, NotChecked=0, Total=7482 [2024-11-20 02:04:38,249 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 1091 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 1681 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1091 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-20 02:04:38,250 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1091 Valid, 628 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1681 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-20 02:04:38,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1826 states. [2024-11-20 02:04:38,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1826 to 1249. [2024-11-20 02:04:38,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 1248 states have (on average 1.2716346153846154) internal successors, (1587), 1248 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:38,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1587 transitions. [2024-11-20 02:04:38,279 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1587 transitions. Word has length 82 [2024-11-20 02:04:38,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:04:38,279 INFO L471 AbstractCegarLoop]: Abstraction has 1249 states and 1587 transitions. [2024-11-20 02:04:38,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 5.0) internal successors, (200), 40 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:38,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1587 transitions. [2024-11-20 02:04:38,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-20 02:04:38,282 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:04:38,282 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-20 02:04:38,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-20 02:04:38,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-20 02:04:38,486 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:04:38,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:04:38,487 INFO L85 PathProgramCache]: Analyzing trace with hash -2098723855, now seen corresponding path program 2 times [2024-11-20 02:04:38,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:04:38,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039593061] [2024-11-20 02:04:38,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:38,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:04:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:39,201 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 38 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 02:04:39,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:04:39,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039593061] [2024-11-20 02:04:39,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039593061] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 02:04:39,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672367250] [2024-11-20 02:04:39,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 02:04:39,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 02:04:39,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 02:04:39,205 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 02:04:39,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-20 02:04:39,368 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 02:04:39,369 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 02:04:39,371 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 113 conjuncts are in the unsatisfiable core [2024-11-20 02:04:39,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 02:04:40,327 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 37 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:04:40,327 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 02:04:42,706 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 37 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:04:42,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672367250] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 02:04:42,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 02:04:42,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 20, 24] total 50 [2024-11-20 02:04:42,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375796407] [2024-11-20 02:04:42,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 02:04:42,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-20 02:04:42,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:04:42,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-20 02:04:42,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=2105, Unknown=0, NotChecked=0, Total=2450 [2024-11-20 02:04:42,710 INFO L87 Difference]: Start difference. First operand 1249 states and 1587 transitions. Second operand has 50 states, 50 states have (on average 4.44) internal successors, (222), 50 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:46,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:04:46,441 INFO L93 Difference]: Finished difference Result 4675 states and 5693 transitions. [2024-11-20 02:04:46,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-11-20 02:04:46,442 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 4.44) internal successors, (222), 50 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2024-11-20 02:04:46,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:04:46,450 INFO L225 Difference]: With dead ends: 4675 [2024-11-20 02:04:46,450 INFO L226 Difference]: Without dead ends: 3478 [2024-11-20 02:04:46,455 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3558 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1399, Invalid=9313, Unknown=0, NotChecked=0, Total=10712 [2024-11-20 02:04:46,456 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 979 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 2222 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 2260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-20 02:04:46,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 928 Invalid, 2260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2222 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-20 02:04:46,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3478 states. [2024-11-20 02:04:46,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3478 to 1568. [2024-11-20 02:04:46,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1568 states, 1567 states have (on average 1.2661135928525846) internal successors, (1984), 1567 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:46,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 1984 transitions. [2024-11-20 02:04:46,501 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 1984 transitions. Word has length 83 [2024-11-20 02:04:46,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:04:46,502 INFO L471 AbstractCegarLoop]: Abstraction has 1568 states and 1984 transitions. [2024-11-20 02:04:46,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 4.44) internal successors, (222), 50 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:46,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 1984 transitions. [2024-11-20 02:04:46,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-20 02:04:46,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:04:46,505 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 02:04:46,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-20 02:04:46,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-20 02:04:46,706 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:04:46,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:04:46,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1598965218, now seen corresponding path program 1 times [2024-11-20 02:04:46,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:04:46,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960716531] [2024-11-20 02:04:46,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:46,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:04:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:47,492 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 30 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:04:47,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:04:47,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960716531] [2024-11-20 02:04:47,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960716531] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 02:04:47,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140781440] [2024-11-20 02:04:47,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:47,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 02:04:47,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 02:04:47,494 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 02:04:47,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-20 02:04:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:47,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 107 conjuncts are in the unsatisfiable core [2024-11-20 02:04:47,696 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 02:04:48,919 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 8 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:04:48,919 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 02:04:53,880 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 02:04:53,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140781440] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 02:04:53,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 02:04:53,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 22, 22] total 54 [2024-11-20 02:04:53,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164941179] [2024-11-20 02:04:53,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 02:04:53,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-20 02:04:53,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:04:53,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-20 02:04:53,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=2543, Unknown=0, NotChecked=0, Total=2862 [2024-11-20 02:04:53,882 INFO L87 Difference]: Start difference. First operand 1568 states and 1984 transitions. Second operand has 54 states, 54 states have (on average 4.481481481481482) internal successors, (242), 54 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:56,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:04:56,803 INFO L93 Difference]: Finished difference Result 4317 states and 5355 transitions. [2024-11-20 02:04:56,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-11-20 02:04:56,804 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 4.481481481481482) internal successors, (242), 54 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-11-20 02:04:56,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:04:56,810 INFO L225 Difference]: With dead ends: 4317 [2024-11-20 02:04:56,810 INFO L226 Difference]: Without dead ends: 3041 [2024-11-20 02:04:56,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3621 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1446, Invalid=10986, Unknown=0, NotChecked=0, Total=12432 [2024-11-20 02:04:56,817 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 556 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 2457 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 2495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-20 02:04:56,817 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 733 Invalid, 2495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2457 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-20 02:04:56,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3041 states. [2024-11-20 02:04:56,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3041 to 1693. [2024-11-20 02:04:56,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1692 states have (on average 1.2559101654846336) internal successors, (2125), 1692 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:56,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 2125 transitions. [2024-11-20 02:04:56,868 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 2125 transitions. Word has length 84 [2024-11-20 02:04:56,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:04:56,869 INFO L471 AbstractCegarLoop]: Abstraction has 1693 states and 2125 transitions. [2024-11-20 02:04:56,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 4.481481481481482) internal successors, (242), 54 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:56,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 2125 transitions. [2024-11-20 02:04:56,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-20 02:04:56,873 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:04:56,873 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 02:04:56,886 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-20 02:04:57,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-20 02:04:57,074 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:04:57,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:04:57,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1428194441, now seen corresponding path program 1 times [2024-11-20 02:04:57,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:04:57,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852031485] [2024-11-20 02:04:57,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:57,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:04:57,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:57,583 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-20 02:04:57,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:04:57,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852031485] [2024-11-20 02:04:57,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852031485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 02:04:57,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 02:04:57,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-20 02:04:57,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059300627] [2024-11-20 02:04:57,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 02:04:57,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 02:04:57,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:04:57,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 02:04:57,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-20 02:04:57,585 INFO L87 Difference]: Start difference. First operand 1693 states and 2125 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:57,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:04:57,697 INFO L93 Difference]: Finished difference Result 3288 states and 4092 transitions. [2024-11-20 02:04:57,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 02:04:57,698 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-11-20 02:04:57,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:04:57,702 INFO L225 Difference]: With dead ends: 3288 [2024-11-20 02:04:57,702 INFO L226 Difference]: Without dead ends: 1834 [2024-11-20 02:04:57,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-20 02:04:57,703 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 86 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 02:04:57,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 454 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 02:04:57,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1834 states. [2024-11-20 02:04:57,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1834 to 1693. [2024-11-20 02:04:57,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1692 states have (on average 1.2559101654846336) internal successors, (2125), 1692 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:57,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 2125 transitions. [2024-11-20 02:04:57,738 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 2125 transitions. Word has length 85 [2024-11-20 02:04:57,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:04:57,739 INFO L471 AbstractCegarLoop]: Abstraction has 1693 states and 2125 transitions. [2024-11-20 02:04:57,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:57,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 2125 transitions. [2024-11-20 02:04:57,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-20 02:04:57,742 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:04:57,742 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 02:04:57,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-20 02:04:57,743 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:04:57,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:04:57,743 INFO L85 PathProgramCache]: Analyzing trace with hash -582737175, now seen corresponding path program 1 times [2024-11-20 02:04:57,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:04:57,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130655909] [2024-11-20 02:04:57,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:57,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:04:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:58,203 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-20 02:04:58,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:04:58,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130655909] [2024-11-20 02:04:58,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130655909] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 02:04:58,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255518680] [2024-11-20 02:04:58,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:58,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 02:04:58,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 02:04:58,205 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 02:04:58,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-20 02:04:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:58,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-20 02:04:58,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 02:04:58,391 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-20 02:04:58,391 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 02:04:58,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255518680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 02:04:58,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 02:04:58,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2024-11-20 02:04:58,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294233469] [2024-11-20 02:04:58,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 02:04:58,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 02:04:58,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:04:58,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 02:04:58,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-20 02:04:58,392 INFO L87 Difference]: Start difference. First operand 1693 states and 2125 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:58,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:04:58,409 INFO L93 Difference]: Finished difference Result 3241 states and 4049 transitions. [2024-11-20 02:04:58,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 02:04:58,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-11-20 02:04:58,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:04:58,413 INFO L225 Difference]: With dead ends: 3241 [2024-11-20 02:04:58,413 INFO L226 Difference]: Without dead ends: 1693 [2024-11-20 02:04:58,414 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-20 02:04:58,415 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 02:04:58,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 199 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 02:04:58,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1693 states. [2024-11-20 02:04:58,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1693 to 1693. [2024-11-20 02:04:58,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1692 states have (on average 1.2470449172576832) internal successors, (2110), 1692 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:58,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 2110 transitions. [2024-11-20 02:04:58,449 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 2110 transitions. Word has length 85 [2024-11-20 02:04:58,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:04:58,449 INFO L471 AbstractCegarLoop]: Abstraction has 1693 states and 2110 transitions. [2024-11-20 02:04:58,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:58,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 2110 transitions. [2024-11-20 02:04:58,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-20 02:04:58,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:04:58,452 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 02:04:58,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-20 02:04:58,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-20 02:04:58,653 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:04:58,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:04:58,654 INFO L85 PathProgramCache]: Analyzing trace with hash -154157462, now seen corresponding path program 1 times [2024-11-20 02:04:58,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:04:58,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886563454] [2024-11-20 02:04:58,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:58,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:04:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:04:59,243 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-20 02:04:59,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:04:59,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886563454] [2024-11-20 02:04:59,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886563454] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 02:04:59,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 02:04:59,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-20 02:04:59,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144143721] [2024-11-20 02:04:59,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 02:04:59,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 02:04:59,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:04:59,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 02:04:59,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-20 02:04:59,246 INFO L87 Difference]: Start difference. First operand 1693 states and 2110 transitions. Second operand has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:59,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:04:59,449 INFO L93 Difference]: Finished difference Result 3219 states and 3988 transitions. [2024-11-20 02:04:59,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 02:04:59,450 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-11-20 02:04:59,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:04:59,455 INFO L225 Difference]: With dead ends: 3219 [2024-11-20 02:04:59,456 INFO L226 Difference]: Without dead ends: 1765 [2024-11-20 02:04:59,457 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-11-20 02:04:59,458 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 75 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 02:04:59,458 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 406 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 02:04:59,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1765 states. [2024-11-20 02:04:59,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1765 to 1693. [2024-11-20 02:04:59,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1692 states have (on average 1.2470449172576832) internal successors, (2110), 1692 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:59,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 2110 transitions. [2024-11-20 02:04:59,488 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 2110 transitions. Word has length 85 [2024-11-20 02:04:59,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:04:59,489 INFO L471 AbstractCegarLoop]: Abstraction has 1693 states and 2110 transitions. [2024-11-20 02:04:59,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:04:59,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 2110 transitions. [2024-11-20 02:04:59,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-20 02:04:59,492 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:04:59,492 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 02:04:59,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-20 02:04:59,492 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:04:59,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:04:59,493 INFO L85 PathProgramCache]: Analyzing trace with hash -335776690, now seen corresponding path program 1 times [2024-11-20 02:04:59,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:04:59,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142359814] [2024-11-20 02:04:59,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:04:59,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:04:59,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:05:00,595 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 9 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 02:05:00,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:05:00,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142359814] [2024-11-20 02:05:00,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142359814] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 02:05:00,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687145039] [2024-11-20 02:05:00,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:05:00,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 02:05:00,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 02:05:00,598 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 02:05:00,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-20 02:05:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:05:00,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-20 02:05:00,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 02:05:01,461 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 15 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:05:01,462 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 02:05:03,355 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:05:03,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687145039] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 02:05:03,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 02:05:03,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 44 [2024-11-20 02:05:03,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773403644] [2024-11-20 02:05:03,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 02:05:03,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-20 02:05:03,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:05:03,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-20 02:05:03,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=1626, Unknown=0, NotChecked=0, Total=1892 [2024-11-20 02:05:03,357 INFO L87 Difference]: Start difference. First operand 1693 states and 2110 transitions. Second operand has 44 states, 44 states have (on average 5.159090909090909) internal successors, (227), 44 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:05:03,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:05:03,998 INFO L93 Difference]: Finished difference Result 4259 states and 5238 transitions. [2024-11-20 02:05:03,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-20 02:05:03,999 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 5.159090909090909) internal successors, (227), 44 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-11-20 02:05:03,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:05:04,005 INFO L225 Difference]: With dead ends: 4259 [2024-11-20 02:05:04,005 INFO L226 Difference]: Without dead ends: 2805 [2024-11-20 02:05:04,007 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=518, Invalid=2788, Unknown=0, NotChecked=0, Total=3306 [2024-11-20 02:05:04,007 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 406 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 02:05:04,007 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 793 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 02:05:04,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2805 states. [2024-11-20 02:05:04,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2805 to 1872. [2024-11-20 02:05:04,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1872 states, 1871 states have (on average 1.2373062533404597) internal successors, (2315), 1871 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:05:04,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1872 states to 1872 states and 2315 transitions. [2024-11-20 02:05:04,046 INFO L78 Accepts]: Start accepts. Automaton has 1872 states and 2315 transitions. Word has length 86 [2024-11-20 02:05:04,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:05:04,046 INFO L471 AbstractCegarLoop]: Abstraction has 1872 states and 2315 transitions. [2024-11-20 02:05:04,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 5.159090909090909) internal successors, (227), 44 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 02:05:04,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1872 states and 2315 transitions. [2024-11-20 02:05:04,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-20 02:05:04,050 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:05:04,050 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 02:05:04,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-20 02:05:04,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-20 02:05:04,251 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:05:04,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:05:04,251 INFO L85 PathProgramCache]: Analyzing trace with hash 206451639, now seen corresponding path program 2 times [2024-11-20 02:05:04,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:05:04,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559413904] [2024-11-20 02:05:04,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:05:04,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:05:04,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:05:05,143 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 41 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:05:05,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:05:05,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559413904] [2024-11-20 02:05:05,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559413904] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 02:05:05,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796744767] [2024-11-20 02:05:05,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 02:05:05,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 02:05:05,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 02:05:05,146 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 02:05:05,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-20 02:05:05,364 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 02:05:05,364 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 02:05:05,372 INFO L255 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 103 conjuncts are in the unsatisfiable core [2024-11-20 02:05:05,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 02:05:06,810 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 8 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:05:06,810 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 02:05:15,321 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 4 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:05:15,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796744767] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 02:05:15,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 02:05:15,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 20, 22] total 51 [2024-11-20 02:05:15,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164792483] [2024-11-20 02:05:15,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 02:05:15,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-20 02:05:15,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:05:15,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-20 02:05:15,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=2331, Unknown=0, NotChecked=0, Total=2550 [2024-11-20 02:05:15,324 INFO L87 Difference]: Start difference. First operand 1872 states and 2315 transitions. Second operand has 51 states, 51 states have (on average 4.862745098039215) internal successors, (248), 51 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)