./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.vis_QF_BV_s1269b_p3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d 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.vis_QF_BV_s1269b_p3.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 db87c07dbb7452fd246a98fbd617147a32e88270b5156b64dd08a046f6919e1f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 23:41:47,287 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 23:41:47,360 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-12 23:41:47,365 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 23:41:47,366 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 23:41:47,384 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 23:41:47,385 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 23:41:47,385 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 23:41:47,386 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 23:41:47,386 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 23:41:47,386 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 23:41:47,386 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 23:41:47,387 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 23:41:47,387 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 23:41:47,388 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 23:41:47,388 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 23:41:47,388 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 23:41:47,389 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 23:41:47,389 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 23:41:47,389 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 23:41:47,389 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 23:41:47,390 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 23:41:47,390 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 23:41:47,391 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 23:41:47,391 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 23:41:47,391 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 23:41:47,391 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 23:41:47,392 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 23:41:47,392 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 23:41:47,392 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 23:41:47,393 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 23:41:47,393 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 23:41:47,393 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 23:41:47,393 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 23:41:47,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 23:41:47,394 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 23:41:47,394 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 23:41:47,394 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 23:41:47,395 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 23:41:47,395 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db87c07dbb7452fd246a98fbd617147a32e88270b5156b64dd08a046f6919e1f [2024-10-12 23:41:47,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 23:41:47,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 23:41:47,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 23:41:47,705 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 23:41:47,705 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 23:41:47,707 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p3.c [2024-10-12 23:41:49,273 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 23:41:49,490 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 23:41:49,491 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p3.c [2024-10-12 23:41:49,500 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a170344e/d2881977dfdb4fd59ff5a9151fc66ea9/FLAG5dabd19e8 [2024-10-12 23:41:49,513 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a170344e/d2881977dfdb4fd59ff5a9151fc66ea9 [2024-10-12 23:41:49,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 23:41:49,517 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 23:41:49,518 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 23:41:49,519 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 23:41:49,524 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 23:41:49,525 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:41:49" (1/1) ... [2024-10-12 23:41:49,526 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71210f01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:49, skipping insertion in model container [2024-10-12 23:41:49,526 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:41:49" (1/1) ... [2024-10-12 23:41:49,555 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 23:41:49,788 WARN L248 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.vis_QF_BV_s1269b_p3.c[1259,1272] [2024-10-12 23:41:49,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 23:41:49,906 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 23:41:49,917 WARN L248 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.vis_QF_BV_s1269b_p3.c[1259,1272] [2024-10-12 23:41:49,971 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 23:41:49,993 INFO L204 MainTranslator]: Completed translation [2024-10-12 23:41:49,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:49 WrapperNode [2024-10-12 23:41:49,994 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 23:41:49,996 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 23:41:49,996 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 23:41:49,996 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 23:41:50,003 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:49" (1/1) ... [2024-10-12 23:41:50,017 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:49" (1/1) ... [2024-10-12 23:41:50,097 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 428 [2024-10-12 23:41:50,097 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 23:41:50,098 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 23:41:50,098 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 23:41:50,098 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 23:41:50,110 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:49" (1/1) ... [2024-10-12 23:41:50,110 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:49" (1/1) ... [2024-10-12 23:41:50,126 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:49" (1/1) ... [2024-10-12 23:41:50,169 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]. [2024-10-12 23:41:50,170 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:49" (1/1) ... [2024-10-12 23:41:50,170 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:49" (1/1) ... [2024-10-12 23:41:50,191 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:49" (1/1) ... [2024-10-12 23:41:50,197 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:49" (1/1) ... [2024-10-12 23:41:50,206 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:49" (1/1) ... [2024-10-12 23:41:50,222 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:49" (1/1) ... [2024-10-12 23:41:50,235 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 23:41:50,236 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 23:41:50,237 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 23:41:50,237 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 23:41:50,238 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:49" (1/1) ... [2024-10-12 23:41:50,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 23:41:50,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 23:41:50,274 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) [2024-10-12 23:41:50,277 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 [2024-10-12 23:41:50,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 23:41:50,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 23:41:50,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 23:41:50,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 23:41:50,468 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 23:41:50,473 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 23:41:51,126 INFO L? ?]: Removed 211 outVars from TransFormulas that were not future-live. [2024-10-12 23:41:51,127 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 23:41:51,163 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 23:41:51,164 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 23:41:51,164 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:41:51 BoogieIcfgContainer [2024-10-12 23:41:51,164 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 23:41:51,168 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 23:41:51,169 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 23:41:51,172 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 23:41:51,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:41:49" (1/3) ... [2024-10-12 23:41:51,173 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f9867cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:41:51, skipping insertion in model container [2024-10-12 23:41:51,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:41:49" (2/3) ... [2024-10-12 23:41:51,174 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f9867cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:41:51, skipping insertion in model container [2024-10-12 23:41:51,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:41:51" (3/3) ... [2024-10-12 23:41:51,176 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_s1269b_p3.c [2024-10-12 23:41:51,193 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 23:41:51,194 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 23:41:51,267 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 23:41:51,276 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;@d45b96c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 23:41:51,277 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 23:41:51,282 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 105 states have (on average 1.5047619047619047) internal successors, (158), 106 states have internal predecessors, (158), 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) [2024-10-12 23:41:51,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-12 23:41:51,290 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:41:51,291 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] [2024-10-12 23:41:51,291 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:41:51,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:41:51,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1873224777, now seen corresponding path program 1 times [2024-10-12 23:41:51,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:41:51,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952167521] [2024-10-12 23:41:51,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:41:51,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:41:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:41:51,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:41:51,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:41:51,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952167521] [2024-10-12 23:41:51,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952167521] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:41:51,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:41:51,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 23:41:51,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602477191] [2024-10-12 23:41:51,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:41:51,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 23:41:51,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:41:51,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 23:41:51,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 23:41:51,901 INFO L87 Difference]: Start difference. First operand has 107 states, 105 states have (on average 1.5047619047619047) internal successors, (158), 106 states have internal predecessors, (158), 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 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2024-10-12 23:41:51,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:41:51,956 INFO L93 Difference]: Finished difference Result 198 states and 294 transitions. [2024-10-12 23:41:51,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 23:41:51,959 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 22 [2024-10-12 23:41:51,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:41:51,968 INFO L225 Difference]: With dead ends: 198 [2024-10-12 23:41:51,968 INFO L226 Difference]: Without dead ends: 108 [2024-10-12 23:41:51,971 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 [2024-10-12 23:41:51,974 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 0 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 23:41:51,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 454 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 23:41:51,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-10-12 23:41:52,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2024-10-12 23:41:52,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.4766355140186915) internal successors, (158), 107 states have internal predecessors, (158), 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) [2024-10-12 23:41:52,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 158 transitions. [2024-10-12 23:41:52,015 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 158 transitions. Word has length 22 [2024-10-12 23:41:52,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:41:52,016 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 158 transitions. [2024-10-12 23:41:52,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2024-10-12 23:41:52,016 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 158 transitions. [2024-10-12 23:41:52,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-12 23:41:52,017 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:41:52,017 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] [2024-10-12 23:41:52,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 23:41:52,017 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:41:52,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:41:52,018 INFO L85 PathProgramCache]: Analyzing trace with hash -2057878787, now seen corresponding path program 1 times [2024-10-12 23:41:52,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:41:52,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235508137] [2024-10-12 23:41:52,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:41:52,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:41:52,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:41:52,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:41:52,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:41:52,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235508137] [2024-10-12 23:41:52,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235508137] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:41:52,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:41:52,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 23:41:52,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102534212] [2024-10-12 23:41:52,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:41:52,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 23:41:52,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:41:52,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 23:41:52,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 23:41:52,148 INFO L87 Difference]: Start difference. First operand 108 states and 158 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 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) [2024-10-12 23:41:52,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:41:52,197 INFO L93 Difference]: Finished difference Result 201 states and 294 transitions. [2024-10-12 23:41:52,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 23:41:52,198 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 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 [2024-10-12 23:41:52,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:41:52,199 INFO L225 Difference]: With dead ends: 201 [2024-10-12 23:41:52,199 INFO L226 Difference]: Without dead ends: 110 [2024-10-12 23:41:52,200 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 [2024-10-12 23:41:52,201 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 0 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 23:41:52,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 451 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 23:41:52,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-10-12 23:41:52,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-10-12 23:41:52,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.4678899082568808) internal successors, (160), 109 states have internal predecessors, (160), 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) [2024-10-12 23:41:52,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 160 transitions. [2024-10-12 23:41:52,216 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 160 transitions. Word has length 23 [2024-10-12 23:41:52,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:41:52,217 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 160 transitions. [2024-10-12 23:41:52,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 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) [2024-10-12 23:41:52,217 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 160 transitions. [2024-10-12 23:41:52,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-12 23:41:52,218 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:41:52,218 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] [2024-10-12 23:41:52,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 23:41:52,219 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:41:52,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:41:52,219 INFO L85 PathProgramCache]: Analyzing trace with hash -467698782, now seen corresponding path program 1 times [2024-10-12 23:41:52,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:41:52,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425787764] [2024-10-12 23:41:52,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:41:52,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:41:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:41:52,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:41:52,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:41:52,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425787764] [2024-10-12 23:41:52,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425787764] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:41:52,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:41:52,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 23:41:52,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218887487] [2024-10-12 23:41:52,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:41:52,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 23:41:52,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:41:52,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 23:41:52,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-12 23:41:52,981 INFO L87 Difference]: Start difference. First operand 110 states and 160 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 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) [2024-10-12 23:41:53,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:41:53,266 INFO L93 Difference]: Finished difference Result 218 states and 318 transitions. [2024-10-12 23:41:53,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 23:41:53,268 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 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 [2024-10-12 23:41:53,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:41:53,270 INFO L225 Difference]: With dead ends: 218 [2024-10-12 23:41:53,270 INFO L226 Difference]: Without dead ends: 125 [2024-10-12 23:41:53,271 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-10-12 23:41:53,275 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 36 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 23:41:53,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1086 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 23:41:53,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-10-12 23:41:53,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 119. [2024-10-12 23:41:53,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.4576271186440677) internal successors, (172), 118 states have internal predecessors, (172), 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) [2024-10-12 23:41:53,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 172 transitions. [2024-10-12 23:41:53,295 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 172 transitions. Word has length 24 [2024-10-12 23:41:53,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:41:53,296 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 172 transitions. [2024-10-12 23:41:53,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 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) [2024-10-12 23:41:53,297 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 172 transitions. [2024-10-12 23:41:53,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-12 23:41:53,297 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:41:53,297 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] [2024-10-12 23:41:53,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 23:41:53,298 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:41:53,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:41:53,299 INFO L85 PathProgramCache]: Analyzing trace with hash -704873436, now seen corresponding path program 1 times [2024-10-12 23:41:53,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:41:53,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857184885] [2024-10-12 23:41:53,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:41:53,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:41:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:41:53,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:41:53,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:41:53,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857184885] [2024-10-12 23:41:53,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857184885] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:41:53,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:41:53,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 23:41:53,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300627689] [2024-10-12 23:41:53,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:41:53,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 23:41:53,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:41:53,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 23:41:53,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-12 23:41:53,672 INFO L87 Difference]: Start difference. First operand 119 states and 172 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 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) [2024-10-12 23:41:53,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:41:53,850 INFO L93 Difference]: Finished difference Result 303 states and 439 transitions. [2024-10-12 23:41:53,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 23:41:53,850 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 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 [2024-10-12 23:41:53,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:41:53,852 INFO L225 Difference]: With dead ends: 303 [2024-10-12 23:41:53,852 INFO L226 Difference]: Without dead ends: 210 [2024-10-12 23:41:53,852 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-10-12 23:41:53,854 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 143 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 23:41:53,854 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 1104 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 23:41:53,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-10-12 23:41:53,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 127. [2024-10-12 23:41:53,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.4523809523809523) internal successors, (183), 126 states have internal predecessors, (183), 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) [2024-10-12 23:41:53,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 183 transitions. [2024-10-12 23:41:53,874 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 183 transitions. Word has length 25 [2024-10-12 23:41:53,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:41:53,875 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 183 transitions. [2024-10-12 23:41:53,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 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) [2024-10-12 23:41:53,876 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 183 transitions. [2024-10-12 23:41:53,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-12 23:41:53,876 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:41:53,876 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] [2024-10-12 23:41:53,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 23:41:53,877 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:41:53,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:41:53,877 INFO L85 PathProgramCache]: Analyzing trace with hash -559703317, now seen corresponding path program 1 times [2024-10-12 23:41:53,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:41:53,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670808436] [2024-10-12 23:41:53,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:41:53,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:41:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:41:54,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:41:54,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:41:54,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670808436] [2024-10-12 23:41:54,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670808436] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:41:54,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:41:54,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 23:41:54,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535932814] [2024-10-12 23:41:54,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:41:54,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 23:41:54,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:41:54,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 23:41:54,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 23:41:54,187 INFO L87 Difference]: Start difference. First operand 127 states and 183 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 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) [2024-10-12 23:41:54,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:41:54,300 INFO L93 Difference]: Finished difference Result 284 states and 409 transitions. [2024-10-12 23:41:54,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 23:41:54,301 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 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 [2024-10-12 23:41:54,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:41:54,302 INFO L225 Difference]: With dead ends: 284 [2024-10-12 23:41:54,303 INFO L226 Difference]: Without dead ends: 176 [2024-10-12 23:41:54,304 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-12 23:41:54,305 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 107 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 23:41:54,305 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 831 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 23:41:54,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-10-12 23:41:54,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 119. [2024-10-12 23:41:54,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.4322033898305084) internal successors, (169), 118 states have internal predecessors, (169), 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) [2024-10-12 23:41:54,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 169 transitions. [2024-10-12 23:41:54,319 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 169 transitions. Word has length 25 [2024-10-12 23:41:54,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:41:54,320 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 169 transitions. [2024-10-12 23:41:54,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 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) [2024-10-12 23:41:54,320 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 169 transitions. [2024-10-12 23:41:54,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-12 23:41:54,324 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:41:54,324 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:41:54,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 23:41:54,325 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:41:54,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:41:54,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1604865220, now seen corresponding path program 1 times [2024-10-12 23:41:54,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:41:54,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725436342] [2024-10-12 23:41:54,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:41:54,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:41:54,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:41:54,886 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:41:54,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:41:54,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725436342] [2024-10-12 23:41:54,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725436342] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:41:54,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:41:54,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 23:41:54,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994244375] [2024-10-12 23:41:54,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:41:54,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 23:41:54,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:41:54,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 23:41:54,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-12 23:41:54,889 INFO L87 Difference]: Start difference. First operand 119 states and 169 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 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) [2024-10-12 23:41:55,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:41:55,005 INFO L93 Difference]: Finished difference Result 276 states and 398 transitions. [2024-10-12 23:41:55,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 23:41:55,006 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 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 70 [2024-10-12 23:41:55,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:41:55,008 INFO L225 Difference]: With dead ends: 276 [2024-10-12 23:41:55,008 INFO L226 Difference]: Without dead ends: 183 [2024-10-12 23:41:55,008 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-10-12 23:41:55,011 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 116 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 23:41:55,012 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 844 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 23:41:55,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-10-12 23:41:55,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 136. [2024-10-12 23:41:55,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.4148148148148147) internal successors, (191), 135 states have internal predecessors, (191), 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) [2024-10-12 23:41:55,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 191 transitions. [2024-10-12 23:41:55,024 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 191 transitions. Word has length 70 [2024-10-12 23:41:55,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:41:55,024 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 191 transitions. [2024-10-12 23:41:55,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 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) [2024-10-12 23:41:55,024 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 191 transitions. [2024-10-12 23:41:55,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-12 23:41:55,026 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:41:55,029 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:41:55,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 23:41:55,030 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:41:55,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:41:55,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1944978338, now seen corresponding path program 1 times [2024-10-12 23:41:55,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:41:55,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400758112] [2024-10-12 23:41:55,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:41:55,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:41:55,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:41:55,519 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:41:55,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:41:55,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400758112] [2024-10-12 23:41:55,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400758112] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:41:55,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:41:55,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-12 23:41:55,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108436632] [2024-10-12 23:41:55,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:41:55,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-12 23:41:55,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:41:55,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-12 23:41:55,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-10-12 23:41:55,525 INFO L87 Difference]: Start difference. First operand 136 states and 191 transitions. Second operand has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 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) [2024-10-12 23:41:55,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:41:55,763 INFO L93 Difference]: Finished difference Result 381 states and 548 transitions. [2024-10-12 23:41:55,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-12 23:41:55,763 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 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 71 [2024-10-12 23:41:55,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:41:55,765 INFO L225 Difference]: With dead ends: 381 [2024-10-12 23:41:55,765 INFO L226 Difference]: Without dead ends: 288 [2024-10-12 23:41:55,765 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2024-10-12 23:41:55,766 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 209 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 23:41:55,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 1642 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 23:41:55,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-10-12 23:41:55,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 173. [2024-10-12 23:41:55,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.4186046511627908) internal successors, (244), 172 states have internal predecessors, (244), 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) [2024-10-12 23:41:55,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 244 transitions. [2024-10-12 23:41:55,781 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 244 transitions. Word has length 71 [2024-10-12 23:41:55,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:41:55,782 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 244 transitions. [2024-10-12 23:41:55,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 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) [2024-10-12 23:41:55,783 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 244 transitions. [2024-10-12 23:41:55,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-12 23:41:55,787 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:41:55,787 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:41:55,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 23:41:55,788 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:41:55,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:41:55,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1218843371, now seen corresponding path program 1 times [2024-10-12 23:41:55,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:41:55,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849275265] [2024-10-12 23:41:55,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:41:55,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:41:55,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:41:56,282 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:41:56,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:41:56,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849275265] [2024-10-12 23:41:56,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849275265] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:41:56,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:41:56,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 23:41:56,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916918539] [2024-10-12 23:41:56,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:41:56,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 23:41:56,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:41:56,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 23:41:56,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-12 23:41:56,284 INFO L87 Difference]: Start difference. First operand 173 states and 244 transitions. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 8 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) [2024-10-12 23:41:56,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:41:56,423 INFO L93 Difference]: Finished difference Result 389 states and 560 transitions. [2024-10-12 23:41:56,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 23:41:56,424 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 8 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) Word has length 72 [2024-10-12 23:41:56,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:41:56,425 INFO L225 Difference]: With dead ends: 389 [2024-10-12 23:41:56,425 INFO L226 Difference]: Without dead ends: 259 [2024-10-12 23:41:56,425 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-10-12 23:41:56,426 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 111 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 23:41:56,426 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 964 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 23:41:56,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-10-12 23:41:56,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 191. [2024-10-12 23:41:56,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.4157894736842105) internal successors, (269), 190 states have internal predecessors, (269), 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) [2024-10-12 23:41:56,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 269 transitions. [2024-10-12 23:41:56,438 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 269 transitions. Word has length 72 [2024-10-12 23:41:56,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:41:56,438 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 269 transitions. [2024-10-12 23:41:56,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 8 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) [2024-10-12 23:41:56,439 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 269 transitions. [2024-10-12 23:41:56,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-12 23:41:56,440 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:41:56,440 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:41:56,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 23:41:56,441 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:41:56,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:41:56,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1821612008, now seen corresponding path program 1 times [2024-10-12 23:41:56,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:41:56,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160542245] [2024-10-12 23:41:56,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:41:56,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:41:56,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:41:56,978 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:41:56,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:41:56,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160542245] [2024-10-12 23:41:56,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160542245] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 23:41:56,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912818635] [2024-10-12 23:41:56,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:41:56,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 23:41:56,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 23:41:56,982 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) [2024-10-12 23:41:56,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 23:41:57,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:41:57,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-12 23:41:57,211 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 23:41:57,551 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:41:57,554 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 23:41:58,116 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:41:58,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912818635] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 23:41:58,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 23:41:58,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 29 [2024-10-12 23:41:58,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479432143] [2024-10-12 23:41:58,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 23:41:58,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-12 23:41:58,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:41:58,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-12 23:41:58,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=792, Unknown=0, NotChecked=0, Total=870 [2024-10-12 23:41:58,122 INFO L87 Difference]: Start difference. First operand 191 states and 269 transitions. Second operand has 30 states, 30 states have (on average 6.7) internal successors, (201), 29 states have internal predecessors, (201), 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) [2024-10-12 23:41:58,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:41:58,932 INFO L93 Difference]: Finished difference Result 481 states and 693 transitions. [2024-10-12 23:41:58,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-12 23:41:58,933 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.7) internal successors, (201), 29 states have internal predecessors, (201), 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 72 [2024-10-12 23:41:58,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:41:58,936 INFO L225 Difference]: With dead ends: 481 [2024-10-12 23:41:58,936 INFO L226 Difference]: Without dead ends: 351 [2024-10-12 23:41:58,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=174, Invalid=1632, Unknown=0, NotChecked=0, Total=1806 [2024-10-12 23:41:58,939 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 140 mSDsluCounter, 3403 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 3539 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 23:41:58,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 3539 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 23:41:58,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2024-10-12 23:41:58,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 344. [2024-10-12 23:41:58,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 343 states have (on average 1.4198250728862973) internal successors, (487), 343 states have internal predecessors, (487), 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) [2024-10-12 23:41:58,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 487 transitions. [2024-10-12 23:41:58,950 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 487 transitions. Word has length 72 [2024-10-12 23:41:58,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:41:58,950 INFO L471 AbstractCegarLoop]: Abstraction has 344 states and 487 transitions. [2024-10-12 23:41:58,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.7) internal successors, (201), 29 states have internal predecessors, (201), 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) [2024-10-12 23:41:58,951 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 487 transitions. [2024-10-12 23:41:58,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-12 23:41:58,954 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:41:58,954 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:41:58,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 23:41:59,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 23:41:59,159 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:41:59,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:41:59,160 INFO L85 PathProgramCache]: Analyzing trace with hash 273489518, now seen corresponding path program 1 times [2024-10-12 23:41:59,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:41:59,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329894182] [2024-10-12 23:41:59,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:41:59,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:41:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:42:00,104 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:42:00,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:42:00,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329894182] [2024-10-12 23:42:00,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329894182] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:42:00,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:42:00,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-10-12 23:42:00,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828729257] [2024-10-12 23:42:00,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:42:00,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-12 23:42:00,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:42:00,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-12 23:42:00,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-10-12 23:42:00,107 INFO L87 Difference]: Start difference. First operand 344 states and 487 transitions. Second operand has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 12 states have internal predecessors, (73), 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) [2024-10-12 23:42:00,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:42:00,523 INFO L93 Difference]: Finished difference Result 833 states and 1195 transitions. [2024-10-12 23:42:00,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-12 23:42:00,523 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 12 states have internal predecessors, (73), 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 73 [2024-10-12 23:42:00,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:42:00,526 INFO L225 Difference]: With dead ends: 833 [2024-10-12 23:42:00,526 INFO L226 Difference]: Without dead ends: 550 [2024-10-12 23:42:00,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2024-10-12 23:42:00,527 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 214 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 23:42:00,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 1082 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 23:42:00,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2024-10-12 23:42:00,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 384. [2024-10-12 23:42:00,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 1.4281984334203655) internal successors, (547), 383 states have internal predecessors, (547), 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) [2024-10-12 23:42:00,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 547 transitions. [2024-10-12 23:42:00,539 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 547 transitions. Word has length 73 [2024-10-12 23:42:00,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:42:00,540 INFO L471 AbstractCegarLoop]: Abstraction has 384 states and 547 transitions. [2024-10-12 23:42:00,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 12 states have internal predecessors, (73), 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) [2024-10-12 23:42:00,540 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 547 transitions. [2024-10-12 23:42:00,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-12 23:42:00,541 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:42:00,541 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:42:00,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 23:42:00,542 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:42:00,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:42:00,542 INFO L85 PathProgramCache]: Analyzing trace with hash 153916285, now seen corresponding path program 1 times [2024-10-12 23:42:00,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:42:00,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135179961] [2024-10-12 23:42:00,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:42:00,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:42:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:42:01,025 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:42:01,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:42:01,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135179961] [2024-10-12 23:42:01,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135179961] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:42:01,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:42:01,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 23:42:01,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273006447] [2024-10-12 23:42:01,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:42:01,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 23:42:01,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:42:01,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 23:42:01,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 23:42:01,027 INFO L87 Difference]: Start difference. First operand 384 states and 547 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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) [2024-10-12 23:42:01,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:42:01,043 INFO L93 Difference]: Finished difference Result 667 states and 953 transitions. [2024-10-12 23:42:01,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 23:42:01,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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) Word has length 74 [2024-10-12 23:42:01,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:42:01,046 INFO L225 Difference]: With dead ends: 667 [2024-10-12 23:42:01,046 INFO L226 Difference]: Without dead ends: 344 [2024-10-12 23:42:01,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 23:42:01,048 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 2 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 298 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 [2024-10-12 23:42:01,048 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 298 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 23:42:01,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-10-12 23:42:01,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2024-10-12 23:42:01,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 343 states have (on average 1.4081632653061225) internal successors, (483), 343 states have internal predecessors, (483), 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) [2024-10-12 23:42:01,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 483 transitions. [2024-10-12 23:42:01,056 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 483 transitions. Word has length 74 [2024-10-12 23:42:01,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:42:01,056 INFO L471 AbstractCegarLoop]: Abstraction has 344 states and 483 transitions. [2024-10-12 23:42:01,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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) [2024-10-12 23:42:01,056 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 483 transitions. [2024-10-12 23:42:01,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-12 23:42:01,057 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:42:01,057 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:42:01,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 23:42:01,058 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:42:01,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:42:01,058 INFO L85 PathProgramCache]: Analyzing trace with hash -874938915, now seen corresponding path program 1 times [2024-10-12 23:42:01,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:42:01,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276969950] [2024-10-12 23:42:01,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:42:01,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:42:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:42:01,579 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:42:01,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:42:01,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276969950] [2024-10-12 23:42:01,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276969950] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:42:01,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:42:01,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-12 23:42:01,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375268903] [2024-10-12 23:42:01,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:42:01,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-12 23:42:01,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:42:01,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-12 23:42:01,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-10-12 23:42:01,582 INFO L87 Difference]: Start difference. First operand 344 states and 483 transitions. Second operand has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 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) [2024-10-12 23:42:01,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:42:01,804 INFO L93 Difference]: Finished difference Result 848 states and 1204 transitions. [2024-10-12 23:42:01,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-12 23:42:01,805 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 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) Word has length 74 [2024-10-12 23:42:01,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:42:01,808 INFO L225 Difference]: With dead ends: 848 [2024-10-12 23:42:01,808 INFO L226 Difference]: Without dead ends: 565 [2024-10-12 23:42:01,809 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2024-10-12 23:42:01,809 INFO L432 NwaCegarLoop]: 239 mSDtfsCounter, 152 mSDsluCounter, 2026 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 2265 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 23:42:01,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 2265 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 23:42:01,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2024-10-12 23:42:01,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 372. [2024-10-12 23:42:01,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 1.4070080862533694) internal successors, (522), 371 states have internal predecessors, (522), 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) [2024-10-12 23:42:01,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 522 transitions. [2024-10-12 23:42:01,819 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 522 transitions. Word has length 74 [2024-10-12 23:42:01,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:42:01,820 INFO L471 AbstractCegarLoop]: Abstraction has 372 states and 522 transitions. [2024-10-12 23:42:01,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 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) [2024-10-12 23:42:01,820 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 522 transitions. [2024-10-12 23:42:01,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-12 23:42:01,821 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:42:01,821 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:42:01,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 23:42:01,822 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:42:01,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:42:01,823 INFO L85 PathProgramCache]: Analyzing trace with hash 416549022, now seen corresponding path program 1 times [2024-10-12 23:42:01,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:42:01,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515735792] [2024-10-12 23:42:01,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:42:01,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:42:01,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:42:02,288 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:42:02,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:42:02,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515735792] [2024-10-12 23:42:02,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515735792] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:42:02,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:42:02,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-12 23:42:02,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011253085] [2024-10-12 23:42:02,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:42:02,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-12 23:42:02,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:42:02,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-12 23:42:02,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-12 23:42:02,290 INFO L87 Difference]: Start difference. First operand 372 states and 522 transitions. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-10-12 23:42:02,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:42:02,568 INFO L93 Difference]: Finished difference Result 1069 states and 1514 transitions. [2024-10-12 23:42:02,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 23:42:02,569 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 [2024-10-12 23:42:02,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:42:02,572 INFO L225 Difference]: With dead ends: 1069 [2024-10-12 23:42:02,572 INFO L226 Difference]: Without dead ends: 758 [2024-10-12 23:42:02,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-10-12 23:42:02,573 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 149 mSDsluCounter, 1864 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 2118 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 23:42:02,573 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 2118 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 23:42:02,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2024-10-12 23:42:02,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 488. [2024-10-12 23:42:02,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 487 states have (on average 1.408624229979466) internal successors, (686), 487 states have internal predecessors, (686), 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) [2024-10-12 23:42:02,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 686 transitions. [2024-10-12 23:42:02,585 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 686 transitions. Word has length 75 [2024-10-12 23:42:02,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:42:02,585 INFO L471 AbstractCegarLoop]: Abstraction has 488 states and 686 transitions. [2024-10-12 23:42:02,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-10-12 23:42:02,586 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 686 transitions. [2024-10-12 23:42:02,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-12 23:42:02,587 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:42:02,587 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:42:02,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 23:42:02,587 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:42:02,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:42:02,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1087626770, now seen corresponding path program 1 times [2024-10-12 23:42:02,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:42:02,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962388878] [2024-10-12 23:42:02,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:42:02,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:42:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:42:03,473 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:42:03,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:42:03,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962388878] [2024-10-12 23:42:03,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962388878] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:42:03,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:42:03,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-10-12 23:42:03,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747653670] [2024-10-12 23:42:03,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:42:03,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-12 23:42:03,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:42:03,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-12 23:42:03,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2024-10-12 23:42:03,476 INFO L87 Difference]: Start difference. First operand 488 states and 686 transitions. Second operand has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 16 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) [2024-10-12 23:42:03,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:42:03,920 INFO L93 Difference]: Finished difference Result 1014 states and 1433 transitions. [2024-10-12 23:42:03,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 23:42:03,921 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 16 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 [2024-10-12 23:42:03,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:42:03,923 INFO L225 Difference]: With dead ends: 1014 [2024-10-12 23:42:03,923 INFO L226 Difference]: Without dead ends: 587 [2024-10-12 23:42:03,924 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2024-10-12 23:42:03,925 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 132 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 23:42:03,925 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 1624 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 23:42:03,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2024-10-12 23:42:03,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 504. [2024-10-12 23:42:03,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 503 states have (on average 1.4055666003976144) internal successors, (707), 503 states have internal predecessors, (707), 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) [2024-10-12 23:42:03,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 707 transitions. [2024-10-12 23:42:03,936 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 707 transitions. Word has length 75 [2024-10-12 23:42:03,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:42:03,937 INFO L471 AbstractCegarLoop]: Abstraction has 504 states and 707 transitions. [2024-10-12 23:42:03,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 16 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) [2024-10-12 23:42:03,937 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 707 transitions. [2024-10-12 23:42:03,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-12 23:42:03,939 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:42:03,939 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:42:03,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 23:42:03,939 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:42:03,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:42:03,940 INFO L85 PathProgramCache]: Analyzing trace with hash 481668261, now seen corresponding path program 1 times [2024-10-12 23:42:03,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:42:03,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892149315] [2024-10-12 23:42:03,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:42:03,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:42:03,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:42:04,198 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:42:04,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:42:04,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892149315] [2024-10-12 23:42:04,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892149315] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:42:04,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:42:04,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 23:42:04,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753411761] [2024-10-12 23:42:04,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:42:04,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 23:42:04,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:42:04,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 23:42:04,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 23:42:04,202 INFO L87 Difference]: Start difference. First operand 504 states and 707 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 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) [2024-10-12 23:42:04,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:42:04,250 INFO L93 Difference]: Finished difference Result 1001 states and 1411 transitions. [2024-10-12 23:42:04,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 23:42:04,252 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 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 [2024-10-12 23:42:04,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:42:04,254 INFO L225 Difference]: With dead ends: 1001 [2024-10-12 23:42:04,254 INFO L226 Difference]: Without dead ends: 574 [2024-10-12 23:42:04,255 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 23:42:04,255 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 75 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 23:42:04,255 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 552 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 23:42:04,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2024-10-12 23:42:04,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 507. [2024-10-12 23:42:04,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 506 states have (on average 1.401185770750988) internal successors, (709), 506 states have internal predecessors, (709), 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) [2024-10-12 23:42:04,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 709 transitions. [2024-10-12 23:42:04,268 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 709 transitions. Word has length 75 [2024-10-12 23:42:04,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:42:04,269 INFO L471 AbstractCegarLoop]: Abstraction has 507 states and 709 transitions. [2024-10-12 23:42:04,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 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) [2024-10-12 23:42:04,269 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 709 transitions. [2024-10-12 23:42:04,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-12 23:42:04,270 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:42:04,270 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:42:04,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 23:42:04,270 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:42:04,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:42:04,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1098244352, now seen corresponding path program 1 times [2024-10-12 23:42:04,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:42:04,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828028629] [2024-10-12 23:42:04,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:42:04,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:42:04,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:42:04,783 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 23:42:04,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:42:04,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828028629] [2024-10-12 23:42:04,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828028629] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 23:42:04,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678545594] [2024-10-12 23:42:04,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:42:04,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 23:42:04,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 23:42:04,787 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) [2024-10-12 23:42:04,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 23:42:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:42:05,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-10-12 23:42:05,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 23:42:05,395 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:42:05,395 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 23:42:06,212 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:42:06,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678545594] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 23:42:06,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 23:42:06,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 15] total 34 [2024-10-12 23:42:06,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318143016] [2024-10-12 23:42:06,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 23:42:06,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-12 23:42:06,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:42:06,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-12 23:42:06,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=998, Unknown=0, NotChecked=0, Total=1122 [2024-10-12 23:42:06,216 INFO L87 Difference]: Start difference. First operand 507 states and 709 transitions. Second operand has 34 states, 34 states have (on average 5.294117647058823) internal successors, (180), 34 states have internal predecessors, (180), 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) [2024-10-12 23:42:06,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:42:06,976 INFO L93 Difference]: Finished difference Result 1680 states and 2372 transitions. [2024-10-12 23:42:06,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-12 23:42:06,977 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.294117647058823) internal successors, (180), 34 states have internal predecessors, (180), 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 [2024-10-12 23:42:06,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:42:06,983 INFO L225 Difference]: With dead ends: 1680 [2024-10-12 23:42:06,984 INFO L226 Difference]: Without dead ends: 1225 [2024-10-12 23:42:06,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=319, Invalid=2231, Unknown=0, NotChecked=0, Total=2550 [2024-10-12 23:42:06,986 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 918 mSDsluCounter, 2268 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 2406 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 23:42:06,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 2406 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 23:42:06,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2024-10-12 23:42:07,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 940. [2024-10-12 23:42:07,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 939 states have (on average 1.3961661341853036) internal successors, (1311), 939 states have internal predecessors, (1311), 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) [2024-10-12 23:42:07,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1311 transitions. [2024-10-12 23:42:07,008 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1311 transitions. Word has length 76 [2024-10-12 23:42:07,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:42:07,009 INFO L471 AbstractCegarLoop]: Abstraction has 940 states and 1311 transitions. [2024-10-12 23:42:07,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.294117647058823) internal successors, (180), 34 states have internal predecessors, (180), 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) [2024-10-12 23:42:07,009 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1311 transitions. [2024-10-12 23:42:07,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-12 23:42:07,010 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:42:07,010 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:42:07,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-12 23:42:07,211 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,SelfDestructingSolverStorable15 [2024-10-12 23:42:07,211 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:42:07,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:42:07,212 INFO L85 PathProgramCache]: Analyzing trace with hash -2061550618, now seen corresponding path program 1 times [2024-10-12 23:42:07,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:42:07,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613287366] [2024-10-12 23:42:07,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:42:07,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:42:07,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:42:07,610 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:42:07,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:42:07,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613287366] [2024-10-12 23:42:07,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613287366] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:42:07,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:42:07,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 23:42:07,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416731396] [2024-10-12 23:42:07,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:42:07,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 23:42:07,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:42:07,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 23:42:07,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 23:42:07,613 INFO L87 Difference]: Start difference. First operand 940 states and 1311 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 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) [2024-10-12 23:42:07,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:42:07,675 INFO L93 Difference]: Finished difference Result 1907 states and 2686 transitions. [2024-10-12 23:42:07,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 23:42:07,676 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 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 [2024-10-12 23:42:07,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:42:07,680 INFO L225 Difference]: With dead ends: 1907 [2024-10-12 23:42:07,680 INFO L226 Difference]: Without dead ends: 1073 [2024-10-12 23:42:07,681 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 23:42:07,682 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 64 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 23:42:07,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 832 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 23:42:07,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2024-10-12 23:42:07,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 1073. [2024-10-12 23:42:07,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 1072 states have (on average 1.396455223880597) internal successors, (1497), 1072 states have internal predecessors, (1497), 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) [2024-10-12 23:42:07,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1497 transitions. [2024-10-12 23:42:07,701 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1497 transitions. Word has length 76 [2024-10-12 23:42:07,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:42:07,701 INFO L471 AbstractCegarLoop]: Abstraction has 1073 states and 1497 transitions. [2024-10-12 23:42:07,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 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) [2024-10-12 23:42:07,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1497 transitions. [2024-10-12 23:42:07,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-12 23:42:07,702 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:42:07,703 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:42:07,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-12 23:42:07,703 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:42:07,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:42:07,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1618116590, now seen corresponding path program 1 times [2024-10-12 23:42:07,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:42:07,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664817676] [2024-10-12 23:42:07,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:42:07,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:42:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:42:08,119 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:42:08,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:42:08,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664817676] [2024-10-12 23:42:08,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664817676] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:42:08,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:42:08,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 23:42:08,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147286750] [2024-10-12 23:42:08,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:42:08,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 23:42:08,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:42:08,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 23:42:08,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-10-12 23:42:08,122 INFO L87 Difference]: Start difference. First operand 1073 states and 1497 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) 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) [2024-10-12 23:42:08,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:42:08,234 INFO L93 Difference]: Finished difference Result 1984 states and 2777 transitions. [2024-10-12 23:42:08,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 23:42:08,234 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) 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 [2024-10-12 23:42:08,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:42:08,238 INFO L225 Difference]: With dead ends: 1984 [2024-10-12 23:42:08,238 INFO L226 Difference]: Without dead ends: 1108 [2024-10-12 23:42:08,241 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-12 23:42:08,241 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 83 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 23:42:08,242 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 760 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 23:42:08,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2024-10-12 23:42:08,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 1108. [2024-10-12 23:42:08,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1108 states, 1107 states have (on average 1.3902439024390243) internal successors, (1539), 1107 states have internal predecessors, (1539), 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) [2024-10-12 23:42:08,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 1539 transitions. [2024-10-12 23:42:08,268 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 1539 transitions. Word has length 76 [2024-10-12 23:42:08,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:42:08,268 INFO L471 AbstractCegarLoop]: Abstraction has 1108 states and 1539 transitions. [2024-10-12 23:42:08,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) 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) [2024-10-12 23:42:08,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 1539 transitions. [2024-10-12 23:42:08,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-12 23:42:08,270 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:42:08,270 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:42:08,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-12 23:42:08,271 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:42:08,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:42:08,271 INFO L85 PathProgramCache]: Analyzing trace with hash -5445589, now seen corresponding path program 1 times [2024-10-12 23:42:08,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:42:08,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121850822] [2024-10-12 23:42:08,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:42:08,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:42:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:42:08,441 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:42:08,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:42:08,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121850822] [2024-10-12 23:42:08,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121850822] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:42:08,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:42:08,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 23:42:08,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592782561] [2024-10-12 23:42:08,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:42:08,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 23:42:08,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:42:08,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 23:42:08,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 23:42:08,445 INFO L87 Difference]: Start difference. First operand 1108 states and 1539 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 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) [2024-10-12 23:42:08,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:42:08,488 INFO L93 Difference]: Finished difference Result 2058 states and 2867 transitions. [2024-10-12 23:42:08,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 23:42:08,489 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 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 [2024-10-12 23:42:08,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:42:08,494 INFO L225 Difference]: With dead ends: 2058 [2024-10-12 23:42:08,495 INFO L226 Difference]: Without dead ends: 1088 [2024-10-12 23:42:08,496 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 23:42:08,496 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 67 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 23:42:08,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 565 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 23:42:08,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2024-10-12 23:42:08,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 1088. [2024-10-12 23:42:08,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1088 states, 1087 states have (on average 1.3845446182152714) internal successors, (1505), 1087 states have internal predecessors, (1505), 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) [2024-10-12 23:42:08,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 1505 transitions. [2024-10-12 23:42:08,517 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 1505 transitions. Word has length 76 [2024-10-12 23:42:08,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:42:08,517 INFO L471 AbstractCegarLoop]: Abstraction has 1088 states and 1505 transitions. [2024-10-12 23:42:08,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 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) [2024-10-12 23:42:08,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 1505 transitions. [2024-10-12 23:42:08,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-12 23:42:08,518 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:42:08,518 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:42:08,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-12 23:42:08,519 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:42:08,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:42:08,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1225035437, now seen corresponding path program 1 times [2024-10-12 23:42:08,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:42:08,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795581352] [2024-10-12 23:42:08,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:42:08,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:42:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:42:08,769 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:42:08,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:42:08,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795581352] [2024-10-12 23:42:08,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795581352] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:42:08,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:42:08,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 23:42:08,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753181795] [2024-10-12 23:42:08,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:42:08,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 23:42:08,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:42:08,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 23:42:08,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 23:42:08,771 INFO L87 Difference]: Start difference. First operand 1088 states and 1505 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 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) [2024-10-12 23:42:08,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:42:08,843 INFO L93 Difference]: Finished difference Result 1964 states and 2734 transitions. [2024-10-12 23:42:08,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 23:42:08,844 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 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 77 [2024-10-12 23:42:08,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:42:08,867 INFO L225 Difference]: With dead ends: 1964 [2024-10-12 23:42:08,867 INFO L226 Difference]: Without dead ends: 1094 [2024-10-12 23:42:08,870 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 23:42:08,871 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 56 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 23:42:08,871 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 814 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 23:42:08,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2024-10-12 23:42:08,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 1088. [2024-10-12 23:42:08,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1088 states, 1087 states have (on average 1.3790248390064397) internal successors, (1499), 1087 states have internal predecessors, (1499), 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) [2024-10-12 23:42:08,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 1499 transitions. [2024-10-12 23:42:08,892 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 1499 transitions. Word has length 77 [2024-10-12 23:42:08,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:42:08,893 INFO L471 AbstractCegarLoop]: Abstraction has 1088 states and 1499 transitions. [2024-10-12 23:42:08,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 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) [2024-10-12 23:42:08,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 1499 transitions. [2024-10-12 23:42:08,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-12 23:42:08,894 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:42:08,894 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:42:08,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-12 23:42:08,895 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:42:08,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:42:08,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1648943154, now seen corresponding path program 1 times [2024-10-12 23:42:08,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:42:08,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155494147] [2024-10-12 23:42:08,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:42:08,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:42:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:42:09,571 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:42:09,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:42:09,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155494147] [2024-10-12 23:42:09,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155494147] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:42:09,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:42:09,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-10-12 23:42:09,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917013005] [2024-10-12 23:42:09,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:42:09,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-12 23:42:09,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:42:09,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-12 23:42:09,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-10-12 23:42:09,576 INFO L87 Difference]: Start difference. First operand 1088 states and 1499 transitions. Second operand has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 14 states have internal predecessors, (77), 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) [2024-10-12 23:42:09,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:42:09,889 INFO L93 Difference]: Finished difference Result 1959 states and 2721 transitions. [2024-10-12 23:42:09,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 23:42:09,890 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 14 states have internal predecessors, (77), 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 77 [2024-10-12 23:42:09,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:42:09,893 INFO L225 Difference]: With dead ends: 1959 [2024-10-12 23:42:09,894 INFO L226 Difference]: Without dead ends: 1111 [2024-10-12 23:42:09,895 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2024-10-12 23:42:09,896 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 100 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 23:42:09,896 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 1539 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 23:42:09,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2024-10-12 23:42:09,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1086. [2024-10-12 23:42:09,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 1085 states have (on average 1.3732718894009217) internal successors, (1490), 1085 states have internal predecessors, (1490), 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) [2024-10-12 23:42:09,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1490 transitions. [2024-10-12 23:42:09,914 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1490 transitions. Word has length 77 [2024-10-12 23:42:09,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:42:09,915 INFO L471 AbstractCegarLoop]: Abstraction has 1086 states and 1490 transitions. [2024-10-12 23:42:09,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 14 states have internal predecessors, (77), 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) [2024-10-12 23:42:09,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1490 transitions. [2024-10-12 23:42:09,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-12 23:42:09,916 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:42:09,916 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:42:09,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-12 23:42:09,917 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:42:09,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:42:09,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1744609825, now seen corresponding path program 1 times [2024-10-12 23:42:09,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:42:09,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835512594] [2024-10-12 23:42:09,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:42:09,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:42:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:42:10,201 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:42:10,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:42:10,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835512594] [2024-10-12 23:42:10,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835512594] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:42:10,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:42:10,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 23:42:10,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466761828] [2024-10-12 23:42:10,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:42:10,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 23:42:10,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:42:10,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 23:42:10,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 23:42:10,204 INFO L87 Difference]: Start difference. First operand 1086 states and 1490 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 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) [2024-10-12 23:42:10,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:42:10,268 INFO L93 Difference]: Finished difference Result 2207 states and 3039 transitions. [2024-10-12 23:42:10,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 23:42:10,269 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 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 77 [2024-10-12 23:42:10,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:42:10,272 INFO L225 Difference]: With dead ends: 2207 [2024-10-12 23:42:10,273 INFO L226 Difference]: Without dead ends: 1159 [2024-10-12 23:42:10,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 23:42:10,275 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 9 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 23:42:10,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 865 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 23:42:10,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2024-10-12 23:42:10,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1154. [2024-10-12 23:42:10,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 1153 states have (on average 1.372940156114484) internal successors, (1583), 1153 states have internal predecessors, (1583), 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) [2024-10-12 23:42:10,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1583 transitions. [2024-10-12 23:42:10,297 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1583 transitions. Word has length 77 [2024-10-12 23:42:10,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:42:10,297 INFO L471 AbstractCegarLoop]: Abstraction has 1154 states and 1583 transitions. [2024-10-12 23:42:10,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 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) [2024-10-12 23:42:10,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1583 transitions. [2024-10-12 23:42:10,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-12 23:42:10,298 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:42:10,299 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:42:10,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-12 23:42:10,299 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:42:10,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:42:10,300 INFO L85 PathProgramCache]: Analyzing trace with hash 294318431, now seen corresponding path program 1 times [2024-10-12 23:42:10,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:42:10,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128408226] [2024-10-12 23:42:10,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:42:10,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:42:10,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:42:10,707 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:42:10,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:42:10,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128408226] [2024-10-12 23:42:10,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128408226] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:42:10,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:42:10,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 23:42:10,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147749597] [2024-10-12 23:42:10,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:42:10,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 23:42:10,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:42:10,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 23:42:10,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-12 23:42:10,710 INFO L87 Difference]: Start difference. First operand 1154 states and 1583 transitions. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 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) [2024-10-12 23:42:10,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:42:10,850 INFO L93 Difference]: Finished difference Result 2062 states and 2852 transitions. [2024-10-12 23:42:10,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 23:42:10,851 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 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) Word has length 78 [2024-10-12 23:42:10,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:42:10,855 INFO L225 Difference]: With dead ends: 2062 [2024-10-12 23:42:10,855 INFO L226 Difference]: Without dead ends: 1154 [2024-10-12 23:42:10,856 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-10-12 23:42:10,857 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 69 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 23:42:10,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 1098 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 23:42:10,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2024-10-12 23:42:10,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1154. [2024-10-12 23:42:10,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 1153 states have (on average 1.3677363399826539) internal successors, (1577), 1153 states have internal predecessors, (1577), 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) [2024-10-12 23:42:10,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1577 transitions. [2024-10-12 23:42:10,874 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1577 transitions. Word has length 78 [2024-10-12 23:42:10,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:42:10,874 INFO L471 AbstractCegarLoop]: Abstraction has 1154 states and 1577 transitions. [2024-10-12 23:42:10,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 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) [2024-10-12 23:42:10,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1577 transitions. [2024-10-12 23:42:10,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-12 23:42:10,875 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:42:10,875 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:42:10,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-12 23:42:10,876 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:42:10,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:42:10,876 INFO L85 PathProgramCache]: Analyzing trace with hash 908125579, now seen corresponding path program 1 times [2024-10-12 23:42:10,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:42:10,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61485168] [2024-10-12 23:42:10,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:42:10,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:42:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:42:11,267 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:42:11,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:42:11,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61485168] [2024-10-12 23:42:11,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61485168] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:42:11,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:42:11,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 23:42:11,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147428052] [2024-10-12 23:42:11,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:42:11,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 23:42:11,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:42:11,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 23:42:11,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 23:42:11,269 INFO L87 Difference]: Start difference. First operand 1154 states and 1577 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 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) [2024-10-12 23:42:11,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:42:11,365 INFO L93 Difference]: Finished difference Result 2059 states and 2850 transitions. [2024-10-12 23:42:11,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 23:42:11,365 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 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) Word has length 78 [2024-10-12 23:42:11,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:42:11,370 INFO L225 Difference]: With dead ends: 2059 [2024-10-12 23:42:11,370 INFO L226 Difference]: Without dead ends: 1175 [2024-10-12 23:42:11,371 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-12 23:42:11,372 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 59 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 23:42:11,372 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 975 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 23:42:11,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2024-10-12 23:42:11,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1168. [2024-10-12 23:42:11,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 1167 states have (on average 1.363324764353042) internal successors, (1591), 1167 states have internal predecessors, (1591), 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) [2024-10-12 23:42:11,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1591 transitions. [2024-10-12 23:42:11,396 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1591 transitions. Word has length 78 [2024-10-12 23:42:11,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:42:11,397 INFO L471 AbstractCegarLoop]: Abstraction has 1168 states and 1591 transitions. [2024-10-12 23:42:11,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 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) [2024-10-12 23:42:11,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1591 transitions. [2024-10-12 23:42:11,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-12 23:42:11,399 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:42:11,399 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:42:11,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-12 23:42:11,399 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:42:11,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:42:11,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1165840261, now seen corresponding path program 1 times [2024-10-12 23:42:11,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:42:11,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642784404] [2024-10-12 23:42:11,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:42:11,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:42:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:42:12,154 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:42:12,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:42:12,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642784404] [2024-10-12 23:42:12,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642784404] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:42:12,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:42:12,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-10-12 23:42:12,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949924414] [2024-10-12 23:42:12,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:42:12,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-12 23:42:12,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:42:12,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-12 23:42:12,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-10-12 23:42:12,157 INFO L87 Difference]: Start difference. First operand 1168 states and 1591 transitions. Second operand has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 13 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) [2024-10-12 23:42:12,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:42:12,491 INFO L93 Difference]: Finished difference Result 2270 states and 3099 transitions. [2024-10-12 23:42:12,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-12 23:42:12,491 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 13 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) Word has length 78 [2024-10-12 23:42:12,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:42:12,496 INFO L225 Difference]: With dead ends: 2270 [2024-10-12 23:42:12,496 INFO L226 Difference]: Without dead ends: 1238 [2024-10-12 23:42:12,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2024-10-12 23:42:12,499 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 149 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 1546 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 23:42:12,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 1546 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 23:42:12,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2024-10-12 23:42:12,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1219. [2024-10-12 23:42:12,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 1218 states have (on average 1.3620689655172413) internal successors, (1659), 1218 states have internal predecessors, (1659), 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) [2024-10-12 23:42:12,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1659 transitions. [2024-10-12 23:42:12,528 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1659 transitions. Word has length 78 [2024-10-12 23:42:12,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:42:12,528 INFO L471 AbstractCegarLoop]: Abstraction has 1219 states and 1659 transitions. [2024-10-12 23:42:12,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 13 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) [2024-10-12 23:42:12,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1659 transitions. [2024-10-12 23:42:12,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-12 23:42:12,530 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:42:12,531 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:42:12,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-12 23:42:12,531 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:42:12,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:42:12,532 INFO L85 PathProgramCache]: Analyzing trace with hash -976284124, now seen corresponding path program 1 times [2024-10-12 23:42:12,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:42:12,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571020647] [2024-10-12 23:42:12,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:42:12,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:42:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:42:12,680 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:42:12,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:42:12,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571020647] [2024-10-12 23:42:12,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571020647] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:42:12,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:42:12,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 23:42:12,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829911147] [2024-10-12 23:42:12,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:42:12,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 23:42:12,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:42:12,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 23:42:12,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 23:42:12,683 INFO L87 Difference]: Start difference. First operand 1219 states and 1659 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 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) [2024-10-12 23:42:12,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:42:12,736 INFO L93 Difference]: Finished difference Result 2369 states and 3226 transitions. [2024-10-12 23:42:12,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 23:42:12,737 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 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) Word has length 78 [2024-10-12 23:42:12,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:42:12,741 INFO L225 Difference]: With dead ends: 2369 [2024-10-12 23:42:12,741 INFO L226 Difference]: Without dead ends: 1201 [2024-10-12 23:42:12,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 23:42:12,743 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 71 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 23:42:12,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 552 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 23:42:12,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2024-10-12 23:42:12,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 1201. [2024-10-12 23:42:12,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1200 states have (on average 1.3591666666666666) internal successors, (1631), 1200 states have internal predecessors, (1631), 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) [2024-10-12 23:42:12,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1631 transitions. [2024-10-12 23:42:12,766 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1631 transitions. Word has length 78 [2024-10-12 23:42:12,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:42:12,766 INFO L471 AbstractCegarLoop]: Abstraction has 1201 states and 1631 transitions. [2024-10-12 23:42:12,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 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) [2024-10-12 23:42:12,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1631 transitions. [2024-10-12 23:42:12,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-12 23:42:12,768 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:42:12,768 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:42:12,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-12 23:42:12,768 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:42:12,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:42:12,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1971126798, now seen corresponding path program 1 times [2024-10-12 23:42:12,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:42:12,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607741957] [2024-10-12 23:42:12,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:42:12,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:42:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:42:12,938 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:42:12,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:42:12,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607741957] [2024-10-12 23:42:12,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607741957] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:42:12,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:42:12,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 23:42:12,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386876702] [2024-10-12 23:42:12,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:42:12,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 23:42:12,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:42:12,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 23:42:12,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 23:42:12,941 INFO L87 Difference]: Start difference. First operand 1201 states and 1631 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 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) [2024-10-12 23:42:12,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:42:12,984 INFO L93 Difference]: Finished difference Result 2355 states and 3202 transitions. [2024-10-12 23:42:12,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 23:42:12,985 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 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) Word has length 78 [2024-10-12 23:42:12,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:42:12,988 INFO L225 Difference]: With dead ends: 2355 [2024-10-12 23:42:12,988 INFO L226 Difference]: Without dead ends: 1196 [2024-10-12 23:42:12,990 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 23:42:12,991 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 78 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 23:42:12,991 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 560 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 23:42:12,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2024-10-12 23:42:13,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 1196. [2024-10-12 23:42:13,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1196 states, 1195 states have (on average 1.3573221757322176) internal successors, (1622), 1195 states have internal predecessors, (1622), 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) [2024-10-12 23:42:13,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1622 transitions. [2024-10-12 23:42:13,010 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1622 transitions. Word has length 78 [2024-10-12 23:42:13,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:42:13,010 INFO L471 AbstractCegarLoop]: Abstraction has 1196 states and 1622 transitions. [2024-10-12 23:42:13,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 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) [2024-10-12 23:42:13,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1622 transitions. [2024-10-12 23:42:13,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-12 23:42:13,012 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:42:13,012 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:42:13,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-12 23:42:13,012 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:42:13,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:42:13,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1951740091, now seen corresponding path program 1 times [2024-10-12 23:42:13,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:42:13,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613915725] [2024-10-12 23:42:13,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:42:13,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:42:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:42:13,456 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:42:13,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:42:13,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613915725] [2024-10-12 23:42:13,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613915725] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:42:13,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:42:13,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-12 23:42:13,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647489201] [2024-10-12 23:42:13,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:42:13,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-12 23:42:13,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:42:13,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-12 23:42:13,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-10-12 23:42:13,458 INFO L87 Difference]: Start difference. First operand 1196 states and 1622 transitions. Second operand has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 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) [2024-10-12 23:42:13,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:42:13,581 INFO L93 Difference]: Finished difference Result 2215 states and 3057 transitions. [2024-10-12 23:42:13,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 23:42:13,581 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 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 [2024-10-12 23:42:13,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:42:13,586 INFO L225 Difference]: With dead ends: 2215 [2024-10-12 23:42:13,586 INFO L226 Difference]: Without dead ends: 1315 [2024-10-12 23:42:13,588 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-10-12 23:42:13,589 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 35 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 23:42:13,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 901 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 23:42:13,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2024-10-12 23:42:13,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1280. [2024-10-12 23:42:13,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 1279 states have (on average 1.3635652853792024) internal successors, (1744), 1279 states have internal predecessors, (1744), 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) [2024-10-12 23:42:13,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1744 transitions. [2024-10-12 23:42:13,612 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1744 transitions. Word has length 79 [2024-10-12 23:42:13,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:42:13,612 INFO L471 AbstractCegarLoop]: Abstraction has 1280 states and 1744 transitions. [2024-10-12 23:42:13,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 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) [2024-10-12 23:42:13,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1744 transitions. [2024-10-12 23:42:13,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-12 23:42:13,614 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:42:13,614 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:42:13,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-12 23:42:13,614 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:42:13,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:42:13,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1028030181, now seen corresponding path program 1 times [2024-10-12 23:42:13,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:42:13,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661841072] [2024-10-12 23:42:13,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:42:13,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:42:13,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:42:14,172 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:42:14,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:42:14,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661841072] [2024-10-12 23:42:14,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661841072] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:42:14,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:42:14,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 23:42:14,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850301581] [2024-10-12 23:42:14,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:42:14,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 23:42:14,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:42:14,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 23:42:14,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-12 23:42:14,175 INFO L87 Difference]: Start difference. First operand 1280 states and 1744 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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) [2024-10-12 23:42:14,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:42:14,268 INFO L93 Difference]: Finished difference Result 2559 states and 3534 transitions. [2024-10-12 23:42:14,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 23:42:14,268 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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 [2024-10-12 23:42:14,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:42:14,273 INFO L225 Difference]: With dead ends: 2559 [2024-10-12 23:42:14,273 INFO L226 Difference]: Without dead ends: 1507 [2024-10-12 23:42:14,275 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-12 23:42:14,279 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 15 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 23:42:14,279 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1002 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 23:42:14,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2024-10-12 23:42:14,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 1382. [2024-10-12 23:42:14,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1382 states, 1381 states have (on average 1.3577118030412745) internal successors, (1875), 1381 states have internal predecessors, (1875), 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) [2024-10-12 23:42:14,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 1875 transitions. [2024-10-12 23:42:14,309 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 1875 transitions. Word has length 79 [2024-10-12 23:42:14,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:42:14,310 INFO L471 AbstractCegarLoop]: Abstraction has 1382 states and 1875 transitions. [2024-10-12 23:42:14,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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) [2024-10-12 23:42:14,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 1875 transitions. [2024-10-12 23:42:14,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-12 23:42:14,311 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:42:14,311 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:42:14,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-10-12 23:42:14,312 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:42:14,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:42:14,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1929295991, now seen corresponding path program 1 times [2024-10-12 23:42:14,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:42:14,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010465132] [2024-10-12 23:42:14,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:42:14,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:42:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:42:15,314 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:42:15,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:42:15,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010465132] [2024-10-12 23:42:15,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010465132] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:42:15,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:42:15,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-10-12 23:42:15,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74866732] [2024-10-12 23:42:15,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:42:15,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-12 23:42:15,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:42:15,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-12 23:42:15,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-10-12 23:42:15,316 INFO L87 Difference]: Start difference. First operand 1382 states and 1875 transitions. Second operand has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 14 states have internal predecessors, (79), 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) [2024-10-12 23:42:15,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:42:15,738 INFO L93 Difference]: Finished difference Result 2010 states and 2744 transitions. [2024-10-12 23:42:15,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 23:42:15,738 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 14 states have internal predecessors, (79), 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 [2024-10-12 23:42:15,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:42:15,743 INFO L225 Difference]: With dead ends: 2010 [2024-10-12 23:42:15,743 INFO L226 Difference]: Without dead ends: 1439 [2024-10-12 23:42:15,745 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2024-10-12 23:42:15,745 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 114 mSDsluCounter, 1743 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 1880 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 23:42:15,746 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 1880 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 23:42:15,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2024-10-12 23:42:15,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1420. [2024-10-12 23:42:15,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1419 states have (on average 1.3558844256518676) internal successors, (1924), 1419 states have internal predecessors, (1924), 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) [2024-10-12 23:42:15,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 1924 transitions. [2024-10-12 23:42:15,771 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 1924 transitions. Word has length 79 [2024-10-12 23:42:15,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:42:15,771 INFO L471 AbstractCegarLoop]: Abstraction has 1420 states and 1924 transitions. [2024-10-12 23:42:15,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 14 states have internal predecessors, (79), 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) [2024-10-12 23:42:15,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 1924 transitions. [2024-10-12 23:42:15,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-12 23:42:15,773 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:42:15,774 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:42:15,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-10-12 23:42:15,774 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:42:15,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:42:15,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1192562180, now seen corresponding path program 1 times [2024-10-12 23:42:15,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:42:15,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878528871] [2024-10-12 23:42:15,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:42:15,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:42:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:42:16,167 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:42:16,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:42:16,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878528871] [2024-10-12 23:42:16,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878528871] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:42:16,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:42:16,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 23:42:16,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267633397] [2024-10-12 23:42:16,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:42:16,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 23:42:16,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:42:16,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 23:42:16,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 23:42:16,171 INFO L87 Difference]: Start difference. First operand 1420 states and 1924 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 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) [2024-10-12 23:42:16,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:42:16,246 INFO L93 Difference]: Finished difference Result 2567 states and 3519 transitions. [2024-10-12 23:42:16,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 23:42:16,247 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 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 [2024-10-12 23:42:16,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:42:16,251 INFO L225 Difference]: With dead ends: 2567 [2024-10-12 23:42:16,251 INFO L226 Difference]: Without dead ends: 1188 [2024-10-12 23:42:16,253 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-10-12 23:42:16,254 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 57 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 23:42:16,254 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 692 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 23:42:16,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2024-10-12 23:42:16,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 1188. [2024-10-12 23:42:16,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 1187 states have (on average 1.3850042122999158) internal successors, (1644), 1187 states have internal predecessors, (1644), 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) [2024-10-12 23:42:16,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1644 transitions. [2024-10-12 23:42:16,273 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1644 transitions. Word has length 79 [2024-10-12 23:42:16,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:42:16,274 INFO L471 AbstractCegarLoop]: Abstraction has 1188 states and 1644 transitions. [2024-10-12 23:42:16,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 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) [2024-10-12 23:42:16,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1644 transitions. [2024-10-12 23:42:16,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-12 23:42:16,275 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:42:16,275 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:42:16,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-10-12 23:42:16,276 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:42:16,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:42:16,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1658880536, now seen corresponding path program 1 times [2024-10-12 23:42:16,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:42:16,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805717429] [2024-10-12 23:42:16,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:42:16,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:42:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:42:16,947 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:42:16,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:42:16,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805717429] [2024-10-12 23:42:16,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805717429] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 23:42:16,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144238163] [2024-10-12 23:42:16,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:42:16,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 23:42:16,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 23:42:16,950 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) [2024-10-12 23:42:16,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 23:42:17,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:42:17,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 119 conjuncts are in the unsatisfiable core [2024-10-12 23:42:17,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 23:42:18,590 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:42:18,591 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 23:42:21,669 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:42:21,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144238163] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 23:42:21,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 23:42:21,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 28, 29] total 73 [2024-10-12 23:42:21,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37459442] [2024-10-12 23:42:21,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 23:42:21,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-10-12 23:42:21,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:42:21,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-10-12 23:42:21,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=485, Invalid=4917, Unknown=0, NotChecked=0, Total=5402 [2024-10-12 23:42:21,676 INFO L87 Difference]: Start difference. First operand 1188 states and 1644 transitions. Second operand has 74 states, 74 states have (on average 3.108108108108108) internal successors, (230), 73 states have internal predecessors, (230), 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) [2024-10-12 23:42:29,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:42:29,521 INFO L93 Difference]: Finished difference Result 3088 states and 4331 transitions. [2024-10-12 23:42:29,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-10-12 23:42:29,522 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 3.108108108108108) internal successors, (230), 73 states have internal predecessors, (230), 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 [2024-10-12 23:42:29,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:42:29,528 INFO L225 Difference]: With dead ends: 3088 [2024-10-12 23:42:29,528 INFO L226 Difference]: Without dead ends: 2010 [2024-10-12 23:42:29,536 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5335 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=2209, Invalid=16697, Unknown=0, NotChecked=0, Total=18906 [2024-10-12 23:42:29,537 INFO L432 NwaCegarLoop]: 265 mSDtfsCounter, 2527 mSDsluCounter, 10711 mSDsCounter, 0 mSdLazyCounter, 5612 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2527 SdHoareTripleChecker+Valid, 10976 SdHoareTripleChecker+Invalid, 5639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 5612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-10-12 23:42:29,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2527 Valid, 10976 Invalid, 5639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 5612 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-10-12 23:42:29,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2024-10-12 23:42:29,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 1474. [2024-10-12 23:42:29,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1473 states have (on average 1.396469789545146) internal successors, (2057), 1473 states have internal predecessors, (2057), 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) [2024-10-12 23:42:29,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2057 transitions. [2024-10-12 23:42:29,570 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2057 transitions. Word has length 80 [2024-10-12 23:42:29,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:42:29,570 INFO L471 AbstractCegarLoop]: Abstraction has 1474 states and 2057 transitions. [2024-10-12 23:42:29,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 3.108108108108108) internal successors, (230), 73 states have internal predecessors, (230), 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) [2024-10-12 23:42:29,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2057 transitions. [2024-10-12 23:42:29,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-12 23:42:29,571 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:42:29,572 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:42:29,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-12 23:42:29,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 23:42:29,773 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:42:29,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:42:29,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1074645965, now seen corresponding path program 1 times [2024-10-12 23:42:29,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:42:29,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965774459] [2024-10-12 23:42:29,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:42:29,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:42:29,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:42:30,681 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:42:30,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:42:30,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965774459] [2024-10-12 23:42:30,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965774459] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 23:42:30,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262790987] [2024-10-12 23:42:30,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:42:30,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 23:42:30,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 23:42:30,683 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) [2024-10-12 23:42:30,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 23:42:30,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:42:30,932 INFO L255 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-10-12 23:42:30,938 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 23:42:32,708 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:42:32,709 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 23:42:35,752 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:42:35,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262790987] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 23:42:35,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 23:42:35,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 23, 23] total 61 [2024-10-12 23:42:35,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766257284] [2024-10-12 23:42:35,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 23:42:35,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-10-12 23:42:35,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:42:35,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-10-12 23:42:35,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=3468, Unknown=0, NotChecked=0, Total=3782 [2024-10-12 23:42:35,754 INFO L87 Difference]: Start difference. First operand 1474 states and 2057 transitions. Second operand has 62 states, 62 states have (on average 3.032258064516129) internal successors, (188), 61 states have internal predecessors, (188), 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) [2024-10-12 23:42:37,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:42:37,525 INFO L93 Difference]: Finished difference Result 4410 states and 6215 transitions. [2024-10-12 23:42:37,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-10-12 23:42:37,526 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 3.032258064516129) internal successors, (188), 61 states have internal predecessors, (188), 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 [2024-10-12 23:42:37,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:42:37,535 INFO L225 Difference]: With dead ends: 4410 [2024-10-12 23:42:37,535 INFO L226 Difference]: Without dead ends: 3293 [2024-10-12 23:42:37,540 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1907 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=437, Invalid=5569, Unknown=0, NotChecked=0, Total=6006 [2024-10-12 23:42:37,540 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 401 mSDsluCounter, 4945 mSDsCounter, 0 mSdLazyCounter, 2387 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 5100 SdHoareTripleChecker+Invalid, 2403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-12 23:42:37,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 5100 Invalid, 2403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2387 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-12 23:42:37,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3293 states. [2024-10-12 23:42:37,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3293 to 2647. [2024-10-12 23:42:37,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2647 states, 2646 states have (on average 1.4300831443688586) internal successors, (3784), 2646 states have internal predecessors, (3784), 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) [2024-10-12 23:42:37,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2647 states to 2647 states and 3784 transitions. [2024-10-12 23:42:37,608 INFO L78 Accepts]: Start accepts. Automaton has 2647 states and 3784 transitions. Word has length 80 [2024-10-12 23:42:37,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:42:37,608 INFO L471 AbstractCegarLoop]: Abstraction has 2647 states and 3784 transitions. [2024-10-12 23:42:37,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 3.032258064516129) internal successors, (188), 61 states have internal predecessors, (188), 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) [2024-10-12 23:42:37,608 INFO L276 IsEmpty]: Start isEmpty. Operand 2647 states and 3784 transitions. [2024-10-12 23:42:37,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-12 23:42:37,609 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:42:37,610 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:42:37,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 23:42:37,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 23:42:37,811 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:42:37,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:42:37,811 INFO L85 PathProgramCache]: Analyzing trace with hash 638968606, now seen corresponding path program 1 times [2024-10-12 23:42:37,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:42:37,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822446770] [2024-10-12 23:42:37,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:42:37,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:42:37,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:42:39,066 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:42:39,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:42:39,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822446770] [2024-10-12 23:42:39,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822446770] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 23:42:39,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919593781] [2024-10-12 23:42:39,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:42:39,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 23:42:39,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 23:42:39,070 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) [2024-10-12 23:42:39,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 23:42:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:42:39,353 INFO L255 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 109 conjuncts are in the unsatisfiable core [2024-10-12 23:42:39,358 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 23:42:40,485 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:42:40,485 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 23:42:40,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919593781] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:42:40,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 23:42:40,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [19] total 35 [2024-10-12 23:42:40,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101499153] [2024-10-12 23:42:40,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:42:40,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-12 23:42:40,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:42:40,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-12 23:42:40,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1135, Unknown=0, NotChecked=0, Total=1260 [2024-10-12 23:42:40,490 INFO L87 Difference]: Start difference. First operand 2647 states and 3784 transitions. Second operand has 18 states, 18 states have (on average 4.5) internal successors, (81), 17 states have internal predecessors, (81), 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) [2024-10-12 23:42:41,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:42:41,189 INFO L93 Difference]: Finished difference Result 3878 states and 5559 transitions. [2024-10-12 23:42:41,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-12 23:42:41,190 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.5) internal successors, (81), 17 states have internal predecessors, (81), 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 81 [2024-10-12 23:42:41,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:42:41,196 INFO L225 Difference]: With dead ends: 3878 [2024-10-12 23:42:41,196 INFO L226 Difference]: Without dead ends: 2657 [2024-10-12 23:42:41,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=228, Invalid=2124, Unknown=0, NotChecked=0, Total=2352 [2024-10-12 23:42:41,200 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 81 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 23:42:41,200 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1493 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 23:42:41,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2657 states. [2024-10-12 23:42:41,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2657 to 2656. [2024-10-12 23:42:41,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2656 states, 2655 states have (on average 1.4290018832391713) internal successors, (3794), 2655 states have internal predecessors, (3794), 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) [2024-10-12 23:42:41,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2656 states to 2656 states and 3794 transitions. [2024-10-12 23:42:41,255 INFO L78 Accepts]: Start accepts. Automaton has 2656 states and 3794 transitions. Word has length 81 [2024-10-12 23:42:41,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:42:41,255 INFO L471 AbstractCegarLoop]: Abstraction has 2656 states and 3794 transitions. [2024-10-12 23:42:41,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.5) internal successors, (81), 17 states have internal predecessors, (81), 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) [2024-10-12 23:42:41,255 INFO L276 IsEmpty]: Start isEmpty. Operand 2656 states and 3794 transitions. [2024-10-12 23:42:41,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-12 23:42:41,256 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:42:41,256 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:42:41,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-12 23:42:41,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-10-12 23:42:41,461 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:42:41,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:42:41,461 INFO L85 PathProgramCache]: Analyzing trace with hash 518831765, now seen corresponding path program 1 times [2024-10-12 23:42:41,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:42:41,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271012347] [2024-10-12 23:42:41,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:42:41,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:42:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat