./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/seq-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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/loop-invgen/seq-3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 32bit --witnessprinter.graph.data.programhash 6c770a3141edeab927df0da4e8c2152e1fb2e87b0c43a352500a7e3d3cff4533 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 18:34:01,156 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 18:34:01,236 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 18:34:01,240 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 18:34:01,241 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 18:34:01,266 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 18:34:01,266 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 18:34:01,267 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 18:34:01,267 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 18:34:01,269 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 18:34:01,270 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 18:34:01,270 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 18:34:01,270 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 18:34:01,273 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 18:34:01,274 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 18:34:01,274 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 18:34:01,275 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 18:34:01,275 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 18:34:01,275 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 18:34:01,275 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 18:34:01,276 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 18:34:01,276 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 18:34:01,276 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 18:34:01,276 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 18:34:01,277 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 18:34:01,277 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 18:34:01,277 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 18:34:01,277 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 18:34:01,278 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 18:34:01,278 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 18:34:01,279 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 18:34:01,280 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 18:34:01,280 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 18:34:01,280 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 18:34:01,280 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 18:34:01,280 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 18:34:01,281 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 18:34:01,281 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 18:34:01,281 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 18:34:01,281 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 18:34:01,281 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 18:34:01,282 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 18:34:01,282 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c770a3141edeab927df0da4e8c2152e1fb2e87b0c43a352500a7e3d3cff4533 [2024-10-12 18:34:01,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 18:34:01,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 18:34:01,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 18:34:01,559 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 18:34:01,559 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 18:34:01,560 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/seq-3.i [2024-10-12 18:34:02,972 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 18:34:03,159 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 18:34:03,159 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/seq-3.i [2024-10-12 18:34:03,166 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a9c125c4/60e3007b49c549eb8d4b676564627c14/FLAG8c2d8314f [2024-10-12 18:34:03,178 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a9c125c4/60e3007b49c549eb8d4b676564627c14 [2024-10-12 18:34:03,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 18:34:03,182 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 18:34:03,183 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 18:34:03,183 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 18:34:03,189 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 18:34:03,190 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:34:03" (1/1) ... [2024-10-12 18:34:03,191 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@745aff38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:34:03, skipping insertion in model container [2024-10-12 18:34:03,191 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:34:03" (1/1) ... [2024-10-12 18:34:03,211 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 18:34:03,386 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/loop-invgen/seq-3.i[893,906] [2024-10-12 18:34:03,403 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 18:34:03,413 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 18:34:03,426 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/loop-invgen/seq-3.i[893,906] [2024-10-12 18:34:03,432 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 18:34:03,454 INFO L204 MainTranslator]: Completed translation [2024-10-12 18:34:03,454 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:34:03 WrapperNode [2024-10-12 18:34:03,454 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 18:34:03,456 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 18:34:03,456 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 18:34:03,456 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 18:34:03,463 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:34:03" (1/1) ... [2024-10-12 18:34:03,471 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:34:03" (1/1) ... [2024-10-12 18:34:03,490 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2024-10-12 18:34:03,491 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 18:34:03,492 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 18:34:03,492 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 18:34:03,492 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 18:34:03,501 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:34:03" (1/1) ... [2024-10-12 18:34:03,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:34:03" (1/1) ... [2024-10-12 18:34:03,502 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:34:03" (1/1) ... [2024-10-12 18:34:03,513 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 18:34:03,513 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:34:03" (1/1) ... [2024-10-12 18:34:03,513 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:34:03" (1/1) ... [2024-10-12 18:34:03,516 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:34:03" (1/1) ... [2024-10-12 18:34:03,518 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:34:03" (1/1) ... [2024-10-12 18:34:03,520 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:34:03" (1/1) ... [2024-10-12 18:34:03,521 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:34:03" (1/1) ... [2024-10-12 18:34:03,522 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 18:34:03,523 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 18:34:03,527 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 18:34:03,527 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 18:34:03,528 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:34:03" (1/1) ... [2024-10-12 18:34:03,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 18:34:03,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:03,564 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 18:34:03,571 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 18:34:03,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 18:34:03,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 18:34:03,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 18:34:03,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 18:34:03,677 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 18:34:03,679 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 18:34:03,825 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-10-12 18:34:03,825 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 18:34:03,847 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 18:34:03,847 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-12 18:34:03,848 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:34:03 BoogieIcfgContainer [2024-10-12 18:34:03,848 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 18:34:03,851 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 18:34:03,851 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 18:34:03,854 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 18:34:03,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 06:34:03" (1/3) ... [2024-10-12 18:34:03,854 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e1c376c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:34:03, skipping insertion in model container [2024-10-12 18:34:03,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:34:03" (2/3) ... [2024-10-12 18:34:03,855 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e1c376c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:34:03, skipping insertion in model container [2024-10-12 18:34:03,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:34:03" (3/3) ... [2024-10-12 18:34:03,856 INFO L112 eAbstractionObserver]: Analyzing ICFG seq-3.i [2024-10-12 18:34:03,869 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 18:34:03,869 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 18:34:03,920 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 18:34:03,927 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;@2ef41923, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 18:34:03,927 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 18:34:03,932 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 13 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 18:34:03,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-12 18:34:03,939 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:03,940 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:03,940 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:03,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:03,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1388144575, now seen corresponding path program 1 times [2024-10-12 18:34:03,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:03,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072584432] [2024-10-12 18:34:03,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:03,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:04,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:04,390 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 18:34:04,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:04,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072584432] [2024-10-12 18:34:04,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072584432] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:34:04,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:34:04,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 18:34:04,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332421402] [2024-10-12 18:34:04,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:34:04,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 18:34:04,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:04,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 18:34:04,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 18:34:04,420 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 13 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) Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 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 18:34:04,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:04,518 INFO L93 Difference]: Finished difference Result 37 states and 60 transitions. [2024-10-12 18:34:04,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 18:34:04,522 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2024-10-12 18:34:04,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:04,528 INFO L225 Difference]: With dead ends: 37 [2024-10-12 18:34:04,528 INFO L226 Difference]: Without dead ends: 22 [2024-10-12 18:34:04,531 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-10-12 18:34:04,536 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 13 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:04,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 37 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:04,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-10-12 18:34:04,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 15. [2024-10-12 18:34:04,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 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 18:34:04,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2024-10-12 18:34:04,565 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 10 [2024-10-12 18:34:04,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:04,566 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2024-10-12 18:34:04,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 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 18:34:04,566 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2024-10-12 18:34:04,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-12 18:34:04,566 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:04,567 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:04,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 18:34:04,567 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:04,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:04,568 INFO L85 PathProgramCache]: Analyzing trace with hash -31362701, now seen corresponding path program 1 times [2024-10-12 18:34:04,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:04,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947382619] [2024-10-12 18:34:04,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:04,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:04,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:04,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:04,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947382619] [2024-10-12 18:34:04,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947382619] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:04,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132792396] [2024-10-12 18:34:04,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:04,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:04,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:04,676 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 18:34:04,678 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 18:34:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:04,741 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 18:34:04,745 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:04,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:04,819 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 18:34:04,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132792396] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:34:04,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 18:34:04,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-12 18:34:04,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437676362] [2024-10-12 18:34:04,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:34:04,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 18:34:04,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:04,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 18:34:04,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-12 18:34:04,825 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 18:34:04,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:04,863 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2024-10-12 18:34:04,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 18:34:04,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2024-10-12 18:34:04,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:04,865 INFO L225 Difference]: With dead ends: 25 [2024-10-12 18:34:04,865 INFO L226 Difference]: Without dead ends: 23 [2024-10-12 18:34:04,865 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-12 18:34:04,866 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:04,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 29 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:34:04,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-10-12 18:34:04,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 17. [2024-10-12 18:34:04,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 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 18:34:04,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2024-10-12 18:34:04,871 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 11 [2024-10-12 18:34:04,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:04,872 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2024-10-12 18:34:04,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 18:34:04,872 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2024-10-12 18:34:04,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-12 18:34:04,872 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:04,873 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:04,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 18:34:05,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:05,074 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:05,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:05,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1981488157, now seen corresponding path program 1 times [2024-10-12 18:34:05,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:05,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133691649] [2024-10-12 18:34:05,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:05,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:05,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:05,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:05,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:05,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133691649] [2024-10-12 18:34:05,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133691649] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:05,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607782166] [2024-10-12 18:34:05,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:05,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:05,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:05,254 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 18:34:05,257 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 18:34:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:05,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-12 18:34:05,305 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:05,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:05,472 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:05,570 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:05,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607782166] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:05,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:05,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2024-10-12 18:34:05,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872523259] [2024-10-12 18:34:05,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:05,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-12 18:34:05,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:05,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-12 18:34:05,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2024-10-12 18:34:05,576 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 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 18:34:05,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:05,673 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2024-10-12 18:34:05,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 18:34:05,674 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 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 14 [2024-10-12 18:34:05,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:05,675 INFO L225 Difference]: With dead ends: 37 [2024-10-12 18:34:05,675 INFO L226 Difference]: Without dead ends: 27 [2024-10-12 18:34:05,676 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2024-10-12 18:34:05,676 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:05,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 88 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:05,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-10-12 18:34:05,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 18. [2024-10-12 18:34:05,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 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 18:34:05,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2024-10-12 18:34:05,681 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 14 [2024-10-12 18:34:05,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:05,681 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2024-10-12 18:34:05,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 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 18:34:05,682 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2024-10-12 18:34:05,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-12 18:34:05,682 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:05,682 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:05,696 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 18:34:05,883 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,SelfDestructingSolverStorable2 [2024-10-12 18:34:05,883 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:05,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:05,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1346112548, now seen corresponding path program 1 times [2024-10-12 18:34:05,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:05,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197825895] [2024-10-12 18:34:05,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:05,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:06,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:06,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:06,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197825895] [2024-10-12 18:34:06,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197825895] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:06,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557348239] [2024-10-12 18:34:06,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:06,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:06,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:06,023 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 18:34:06,025 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 18:34:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:06,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-12 18:34:06,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:06,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:06,195 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:06,280 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:06,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557348239] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:06,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:06,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-10-12 18:34:06,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069384738] [2024-10-12 18:34:06,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:06,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-12 18:34:06,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:06,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-12 18:34:06,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-10-12 18:34:06,283 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 16 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 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 18:34:06,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:06,345 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2024-10-12 18:34:06,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 18:34:06,346 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 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 14 [2024-10-12 18:34:06,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:06,347 INFO L225 Difference]: With dead ends: 40 [2024-10-12 18:34:06,347 INFO L226 Difference]: Without dead ends: 30 [2024-10-12 18:34:06,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2024-10-12 18:34:06,349 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 9 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:06,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 47 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:34:06,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-10-12 18:34:06,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 20. [2024-10-12 18:34:06,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 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 18:34:06,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2024-10-12 18:34:06,354 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 14 [2024-10-12 18:34:06,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:06,354 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-10-12 18:34:06,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 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 18:34:06,355 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2024-10-12 18:34:06,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-12 18:34:06,355 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:06,355 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:06,372 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 18:34:06,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:06,556 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:06,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:06,557 INFO L85 PathProgramCache]: Analyzing trace with hash 480644175, now seen corresponding path program 2 times [2024-10-12 18:34:06,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:06,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135039064] [2024-10-12 18:34:06,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:06,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:06,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:06,662 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:06,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:06,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135039064] [2024-10-12 18:34:06,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135039064] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:06,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245027618] [2024-10-12 18:34:06,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 18:34:06,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:06,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:06,665 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 18:34:06,666 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 18:34:06,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 18:34:06,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:06,706 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 18:34:06,708 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:06,746 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:06,747 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:06,785 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:06,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245027618] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:06,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:06,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-10-12 18:34:06,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926530236] [2024-10-12 18:34:06,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:06,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 18:34:06,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:06,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 18:34:06,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-12 18:34:06,787 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 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 18:34:06,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:06,846 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2024-10-12 18:34:06,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 18:34:06,849 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 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 15 [2024-10-12 18:34:06,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:06,850 INFO L225 Difference]: With dead ends: 31 [2024-10-12 18:34:06,850 INFO L226 Difference]: Without dead ends: 29 [2024-10-12 18:34:06,850 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-12 18:34:06,851 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 12 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:06,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 54 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:34:06,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-10-12 18:34:06,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 23. [2024-10-12 18:34:06,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:06,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-10-12 18:34:06,859 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 15 [2024-10-12 18:34:06,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:06,859 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-10-12 18:34:06,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 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 18:34:06,860 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-10-12 18:34:06,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-12 18:34:06,860 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:06,860 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:06,877 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 18:34:07,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:07,062 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:07,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:07,062 INFO L85 PathProgramCache]: Analyzing trace with hash -545504319, now seen corresponding path program 3 times [2024-10-12 18:34:07,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:07,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214148341] [2024-10-12 18:34:07,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:07,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:07,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:07,199 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:07,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:07,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214148341] [2024-10-12 18:34:07,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214148341] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:07,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898947140] [2024-10-12 18:34:07,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 18:34:07,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:07,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:07,202 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 18:34:07,203 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 18:34:07,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-12 18:34:07,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:07,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 18:34:07,248 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:07,404 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:07,405 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:07,486 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:07,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898947140] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:07,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:07,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2024-10-12 18:34:07,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617768351] [2024-10-12 18:34:07,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:07,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-12 18:34:07,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:07,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-12 18:34:07,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2024-10-12 18:34:07,488 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 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 18:34:07,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:07,562 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2024-10-12 18:34:07,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 18:34:07,563 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 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 18 [2024-10-12 18:34:07,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:07,564 INFO L225 Difference]: With dead ends: 50 [2024-10-12 18:34:07,564 INFO L226 Difference]: Without dead ends: 37 [2024-10-12 18:34:07,564 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2024-10-12 18:34:07,565 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:07,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 76 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:07,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-10-12 18:34:07,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2024-10-12 18:34:07,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 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 18:34:07,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-10-12 18:34:07,571 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 18 [2024-10-12 18:34:07,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:07,571 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-10-12 18:34:07,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 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 18:34:07,571 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-10-12 18:34:07,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-12 18:34:07,571 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:07,572 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:07,584 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 18:34:07,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:07,773 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:07,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:07,773 INFO L85 PathProgramCache]: Analyzing trace with hash -446356480, now seen corresponding path program 1 times [2024-10-12 18:34:07,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:07,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158974415] [2024-10-12 18:34:07,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:07,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:07,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:07,910 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:07,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:07,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158974415] [2024-10-12 18:34:07,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158974415] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:07,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445264164] [2024-10-12 18:34:07,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:07,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:07,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:07,912 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:07,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 18:34:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:07,954 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 18:34:07,955 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:08,094 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:08,094 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:08,184 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:08,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445264164] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:08,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:08,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2024-10-12 18:34:08,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925598882] [2024-10-12 18:34:08,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:08,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-12 18:34:08,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:08,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-12 18:34:08,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2024-10-12 18:34:08,186 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 20 states, 20 states have (on average 1.95) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 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 18:34:08,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:08,276 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2024-10-12 18:34:08,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 18:34:08,277 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 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 18 [2024-10-12 18:34:08,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:08,277 INFO L225 Difference]: With dead ends: 51 [2024-10-12 18:34:08,278 INFO L226 Difference]: Without dead ends: 38 [2024-10-12 18:34:08,278 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2024-10-12 18:34:08,279 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:08,279 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 99 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:08,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-10-12 18:34:08,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 24. [2024-10-12 18:34:08,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 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 18:34:08,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-10-12 18:34:08,283 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 18 [2024-10-12 18:34:08,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:08,283 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-10-12 18:34:08,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 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 18:34:08,284 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-10-12 18:34:08,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-12 18:34:08,284 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:08,284 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:08,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-12 18:34:08,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:08,489 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:08,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:08,489 INFO L85 PathProgramCache]: Analyzing trace with hash -858800159, now seen corresponding path program 2 times [2024-10-12 18:34:08,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:08,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337554345] [2024-10-12 18:34:08,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:08,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:08,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:08,632 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:08,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:08,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337554345] [2024-10-12 18:34:08,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337554345] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:08,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582526004] [2024-10-12 18:34:08,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 18:34:08,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:08,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:08,636 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:08,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 18:34:08,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 18:34:08,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:08,681 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 18:34:08,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:08,816 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:08,817 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:08,903 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:08,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582526004] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:08,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:08,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2024-10-12 18:34:08,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903597500] [2024-10-12 18:34:08,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:08,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-12 18:34:08,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:08,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-12 18:34:08,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2024-10-12 18:34:08,905 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 19 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 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 18:34:08,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:08,978 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2024-10-12 18:34:08,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 18:34:08,978 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 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 18 [2024-10-12 18:34:08,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:08,979 INFO L225 Difference]: With dead ends: 53 [2024-10-12 18:34:08,979 INFO L226 Difference]: Without dead ends: 40 [2024-10-12 18:34:08,979 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2024-10-12 18:34:08,980 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 9 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:08,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 55 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:08,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-10-12 18:34:08,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 26. [2024-10-12 18:34:08,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 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 18:34:08,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2024-10-12 18:34:08,987 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 18 [2024-10-12 18:34:08,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:08,988 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2024-10-12 18:34:08,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 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 18:34:08,988 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2024-10-12 18:34:08,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-12 18:34:08,989 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:08,989 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:09,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-12 18:34:09,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:09,190 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:09,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:09,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1775225587, now seen corresponding path program 4 times [2024-10-12 18:34:09,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:09,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328127832] [2024-10-12 18:34:09,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:09,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:09,280 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:09,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:09,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328127832] [2024-10-12 18:34:09,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328127832] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:09,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082527998] [2024-10-12 18:34:09,281 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-12 18:34:09,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:09,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:09,283 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:09,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 18:34:09,325 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-12 18:34:09,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:09,326 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 18:34:09,327 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:09,359 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:09,359 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:09,404 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:09,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082527998] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:09,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:09,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2024-10-12 18:34:09,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792829051] [2024-10-12 18:34:09,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:09,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 18:34:09,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:09,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 18:34:09,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-10-12 18:34:09,419 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:09,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:09,492 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2024-10-12 18:34:09,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 18:34:09,493 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-10-12 18:34:09,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:09,494 INFO L225 Difference]: With dead ends: 37 [2024-10-12 18:34:09,496 INFO L226 Difference]: Without dead ends: 35 [2024-10-12 18:34:09,496 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-10-12 18:34:09,497 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:09,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 78 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:34:09,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-10-12 18:34:09,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2024-10-12 18:34:09,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 0 states have call successors, (0), 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 18:34:09,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2024-10-12 18:34:09,505 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 19 [2024-10-12 18:34:09,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:09,505 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2024-10-12 18:34:09,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:09,505 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2024-10-12 18:34:09,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-12 18:34:09,506 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:09,506 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:09,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-12 18:34:09,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-12 18:34:09,707 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:09,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:09,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1817989789, now seen corresponding path program 5 times [2024-10-12 18:34:09,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:09,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675656563] [2024-10-12 18:34:09,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:09,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:09,841 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:09,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:09,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675656563] [2024-10-12 18:34:09,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675656563] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:09,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376798943] [2024-10-12 18:34:09,842 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-12 18:34:09,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:09,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:09,844 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:09,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 18:34:09,888 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-10-12 18:34:09,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:09,889 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 18:34:09,892 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:10,095 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:10,095 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:10,200 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:10,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376798943] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:10,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:10,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2024-10-12 18:34:10,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528382544] [2024-10-12 18:34:10,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:10,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-12 18:34:10,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:10,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-12 18:34:10,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=479, Unknown=0, NotChecked=0, Total=600 [2024-10-12 18:34:10,202 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 25 states, 25 states have (on average 1.92) internal successors, (48), 24 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:10,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:10,310 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2024-10-12 18:34:10,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-12 18:34:10,310 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 24 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-10-12 18:34:10,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:10,311 INFO L225 Difference]: With dead ends: 63 [2024-10-12 18:34:10,311 INFO L226 Difference]: Without dead ends: 47 [2024-10-12 18:34:10,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 8 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=521, Unknown=0, NotChecked=0, Total=650 [2024-10-12 18:34:10,312 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:10,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 108 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:10,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-10-12 18:34:10,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 30. [2024-10-12 18:34:10,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 states have internal predecessors, (35), 0 states have call successors, (0), 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 18:34:10,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2024-10-12 18:34:10,317 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 22 [2024-10-12 18:34:10,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:10,317 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2024-10-12 18:34:10,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 24 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:10,317 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2024-10-12 18:34:10,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-12 18:34:10,318 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:10,318 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:10,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-12 18:34:10,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-12 18:34:10,523 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:10,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:10,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1773339812, now seen corresponding path program 2 times [2024-10-12 18:34:10,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:10,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446282930] [2024-10-12 18:34:10,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:10,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:10,649 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:10,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:10,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446282930] [2024-10-12 18:34:10,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446282930] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:10,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186351135] [2024-10-12 18:34:10,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 18:34:10,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:10,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:10,652 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:10,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-12 18:34:10,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 18:34:10,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:10,697 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 18:34:10,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:10,916 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:10,916 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:11,017 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:11,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186351135] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:11,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:11,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2024-10-12 18:34:11,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060199611] [2024-10-12 18:34:11,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:11,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-12 18:34:11,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:11,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-12 18:34:11,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2024-10-12 18:34:11,019 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 23 states have internal predecessors, (47), 0 states have call successors, (0), 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 18:34:11,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:11,088 INFO L93 Difference]: Finished difference Result 65 states and 72 transitions. [2024-10-12 18:34:11,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-12 18:34:11,089 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 23 states have internal predecessors, (47), 0 states have call successors, (0), 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 18:34:11,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:11,089 INFO L225 Difference]: With dead ends: 65 [2024-10-12 18:34:11,089 INFO L226 Difference]: Without dead ends: 49 [2024-10-12 18:34:11,090 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2024-10-12 18:34:11,090 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:11,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 73 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:11,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-12 18:34:11,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2024-10-12 18:34:11,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 states have internal predecessors, (35), 0 states have call successors, (0), 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 18:34:11,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2024-10-12 18:34:11,095 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 22 [2024-10-12 18:34:11,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:11,095 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2024-10-12 18:34:11,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 23 states have internal predecessors, (47), 0 states have call successors, (0), 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 18:34:11,096 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2024-10-12 18:34:11,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-12 18:34:11,096 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:11,096 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:11,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-12 18:34:11,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-12 18:34:11,297 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:11,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:11,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1297399485, now seen corresponding path program 3 times [2024-10-12 18:34:11,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:11,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369205250] [2024-10-12 18:34:11,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:11,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:11,432 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:11,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:11,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369205250] [2024-10-12 18:34:11,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369205250] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:11,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371322189] [2024-10-12 18:34:11,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 18:34:11,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:11,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:11,435 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:11,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-12 18:34:11,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-12 18:34:11,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:11,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 18:34:11,487 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:11,663 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:11,663 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:11,759 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:11,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371322189] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:11,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:11,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 22 [2024-10-12 18:34:11,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629973613] [2024-10-12 18:34:11,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:11,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-12 18:34:11,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:11,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-12 18:34:11,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2024-10-12 18:34:11,761 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 23 states, 23 states have (on average 2.0) internal successors, (46), 22 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:11,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:11,828 INFO L93 Difference]: Finished difference Result 65 states and 72 transitions. [2024-10-12 18:34:11,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-12 18:34:11,828 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0) internal successors, (46), 22 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-10-12 18:34:11,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:11,829 INFO L225 Difference]: With dead ends: 65 [2024-10-12 18:34:11,829 INFO L226 Difference]: Without dead ends: 49 [2024-10-12 18:34:11,830 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 25 SyntacticMatches, 8 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2024-10-12 18:34:11,830 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:11,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 84 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:11,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-12 18:34:11,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2024-10-12 18:34:11,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 states have internal predecessors, (35), 0 states have call successors, (0), 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 18:34:11,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2024-10-12 18:34:11,836 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 22 [2024-10-12 18:34:11,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:11,837 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2024-10-12 18:34:11,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.0) internal successors, (46), 22 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:11,837 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2024-10-12 18:34:11,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-12 18:34:11,838 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:11,838 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:11,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-12 18:34:12,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-12 18:34:12,039 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:12,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:12,039 INFO L85 PathProgramCache]: Analyzing trace with hash 2089192252, now seen corresponding path program 3 times [2024-10-12 18:34:12,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:12,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477916730] [2024-10-12 18:34:12,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:12,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:12,191 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:12,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:12,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477916730] [2024-10-12 18:34:12,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477916730] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:12,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623516819] [2024-10-12 18:34:12,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 18:34:12,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:12,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:12,194 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:12,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-12 18:34:12,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-12 18:34:12,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:12,242 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 18:34:12,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:12,364 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:12,364 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:12,442 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:12,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623516819] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:12,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:12,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 21 [2024-10-12 18:34:12,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742954887] [2024-10-12 18:34:12,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:12,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-12 18:34:12,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:12,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-12 18:34:12,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2024-10-12 18:34:12,444 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 21 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:12,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:12,527 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2024-10-12 18:34:12,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-12 18:34:12,528 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 21 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-10-12 18:34:12,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:12,528 INFO L225 Difference]: With dead ends: 66 [2024-10-12 18:34:12,529 INFO L226 Difference]: Without dead ends: 50 [2024-10-12 18:34:12,529 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 26 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2024-10-12 18:34:12,530 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:12,530 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 76 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:12,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-10-12 18:34:12,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 32. [2024-10-12 18:34:12,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 31 states have internal predecessors, (38), 0 states have call successors, (0), 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 18:34:12,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2024-10-12 18:34:12,535 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 22 [2024-10-12 18:34:12,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:12,535 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2024-10-12 18:34:12,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 21 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:12,535 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2024-10-12 18:34:12,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-12 18:34:12,536 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:12,536 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:12,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-12 18:34:12,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-12 18:34:12,740 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:12,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:12,741 INFO L85 PathProgramCache]: Analyzing trace with hash 106229967, now seen corresponding path program 6 times [2024-10-12 18:34:12,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:12,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911368389] [2024-10-12 18:34:12,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:12,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:12,821 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:12,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:12,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911368389] [2024-10-12 18:34:12,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911368389] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:12,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993163949] [2024-10-12 18:34:12,822 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-12 18:34:12,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:12,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:12,824 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:12,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-12 18:34:12,872 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-10-12 18:34:12,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:12,873 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-12 18:34:12,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:12,910 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:12,910 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:12,962 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:12,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993163949] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:12,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:12,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2024-10-12 18:34:12,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876770701] [2024-10-12 18:34:12,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:12,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-12 18:34:12,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:12,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-12 18:34:12,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-12 18:34:12,964 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 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 18:34:13,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:13,033 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2024-10-12 18:34:13,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-12 18:34:13,034 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 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 18:34:13,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:13,034 INFO L225 Difference]: With dead ends: 43 [2024-10-12 18:34:13,034 INFO L226 Difference]: Without dead ends: 41 [2024-10-12 18:34:13,035 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 8 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2024-10-12 18:34:13,035 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 14 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:13,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 84 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:34:13,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-10-12 18:34:13,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2024-10-12 18:34:13,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 34 states have internal predecessors, (41), 0 states have call successors, (0), 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 18:34:13,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2024-10-12 18:34:13,045 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 23 [2024-10-12 18:34:13,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:13,046 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2024-10-12 18:34:13,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 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 18:34:13,046 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2024-10-12 18:34:13,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-12 18:34:13,047 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:13,047 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:13,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-12 18:34:13,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-12 18:34:13,248 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:13,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:13,248 INFO L85 PathProgramCache]: Analyzing trace with hash -689107135, now seen corresponding path program 7 times [2024-10-12 18:34:13,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:13,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885648536] [2024-10-12 18:34:13,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:13,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:13,437 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:13,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:13,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885648536] [2024-10-12 18:34:13,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885648536] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:13,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108345637] [2024-10-12 18:34:13,438 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-12 18:34:13,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:13,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:13,440 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:13,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-12 18:34:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:13,491 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-12 18:34:13,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:13,696 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:13,696 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:13,823 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:13,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108345637] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:13,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:13,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 28 [2024-10-12 18:34:13,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858963045] [2024-10-12 18:34:13,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:13,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-12 18:34:13,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:13,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-12 18:34:13,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=651, Unknown=0, NotChecked=0, Total=812 [2024-10-12 18:34:13,827 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 29 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 28 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:13,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:13,908 INFO L93 Difference]: Finished difference Result 76 states and 84 transitions. [2024-10-12 18:34:13,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 18:34:13,909 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 28 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-10-12 18:34:13,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:13,909 INFO L225 Difference]: With dead ends: 76 [2024-10-12 18:34:13,909 INFO L226 Difference]: Without dead ends: 57 [2024-10-12 18:34:13,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 27 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=169, Invalid=701, Unknown=0, NotChecked=0, Total=870 [2024-10-12 18:34:13,910 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:13,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 102 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:13,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-10-12 18:34:13,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 36. [2024-10-12 18:34:13,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2) internal successors, (42), 35 states have internal predecessors, (42), 0 states have call successors, (0), 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 18:34:13,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2024-10-12 18:34:13,917 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 26 [2024-10-12 18:34:13,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:13,917 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2024-10-12 18:34:13,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 28 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:13,917 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2024-10-12 18:34:13,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-12 18:34:13,918 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:13,918 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:13,936 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-12 18:34:14,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:14,119 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:14,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:14,119 INFO L85 PathProgramCache]: Analyzing trace with hash -758300544, now seen corresponding path program 4 times [2024-10-12 18:34:14,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:14,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549540092] [2024-10-12 18:34:14,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:14,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:14,262 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:14,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:14,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549540092] [2024-10-12 18:34:14,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549540092] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:14,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347636711] [2024-10-12 18:34:14,263 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-12 18:34:14,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:14,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:14,265 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:14,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-12 18:34:14,308 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-12 18:34:14,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:14,309 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-12 18:34:14,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:14,520 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:14,520 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:14,631 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:14,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347636711] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:14,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:14,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2024-10-12 18:34:14,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784207554] [2024-10-12 18:34:14,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:14,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-12 18:34:14,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:14,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-12 18:34:14,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=611, Unknown=0, NotChecked=0, Total=756 [2024-10-12 18:34:14,633 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 28 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 27 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:14,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:14,739 INFO L93 Difference]: Finished difference Result 79 states and 87 transitions. [2024-10-12 18:34:14,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 18:34:14,740 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 27 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-10-12 18:34:14,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:14,741 INFO L225 Difference]: With dead ends: 79 [2024-10-12 18:34:14,741 INFO L226 Difference]: Without dead ends: 60 [2024-10-12 18:34:14,741 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 10 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=659, Unknown=0, NotChecked=0, Total=812 [2024-10-12 18:34:14,741 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:14,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 124 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:14,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-10-12 18:34:14,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 36. [2024-10-12 18:34:14,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2) internal successors, (42), 35 states have internal predecessors, (42), 0 states have call successors, (0), 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 18:34:14,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2024-10-12 18:34:14,747 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 26 [2024-10-12 18:34:14,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:14,747 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2024-10-12 18:34:14,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 27 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:14,747 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2024-10-12 18:34:14,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-12 18:34:14,747 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:14,747 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:14,764 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-12 18:34:14,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-12 18:34:14,952 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:14,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:14,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1871866721, now seen corresponding path program 5 times [2024-10-12 18:34:14,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:14,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183433861] [2024-10-12 18:34:14,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:14,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:15,102 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:15,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:15,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183433861] [2024-10-12 18:34:15,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183433861] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:15,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044160285] [2024-10-12 18:34:15,103 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-12 18:34:15,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:15,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:15,105 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:15,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-12 18:34:15,154 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-10-12 18:34:15,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:15,155 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-12 18:34:15,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:15,357 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:15,357 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:15,468 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:15,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044160285] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:15,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:15,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 26 [2024-10-12 18:34:15,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430779541] [2024-10-12 18:34:15,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:15,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-12 18:34:15,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:15,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-12 18:34:15,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=569, Unknown=0, NotChecked=0, Total=702 [2024-10-12 18:34:15,471 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 27 states, 27 states have (on average 2.0) internal successors, (54), 26 states have internal predecessors, (54), 0 states have call successors, (0), 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 18:34:15,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:15,573 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2024-10-12 18:34:15,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 18:34:15,573 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.0) internal successors, (54), 26 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-10-12 18:34:15,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:15,574 INFO L225 Difference]: With dead ends: 80 [2024-10-12 18:34:15,574 INFO L226 Difference]: Without dead ends: 61 [2024-10-12 18:34:15,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 29 SyntacticMatches, 10 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2024-10-12 18:34:15,576 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:15,576 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 129 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:15,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-10-12 18:34:15,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 36. [2024-10-12 18:34:15,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2) internal successors, (42), 35 states have internal predecessors, (42), 0 states have call successors, (0), 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 18:34:15,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2024-10-12 18:34:15,584 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 26 [2024-10-12 18:34:15,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:15,584 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2024-10-12 18:34:15,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.0) internal successors, (54), 26 states have internal predecessors, (54), 0 states have call successors, (0), 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 18:34:15,585 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2024-10-12 18:34:15,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-12 18:34:15,585 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:15,585 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:15,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-12 18:34:15,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-12 18:34:15,787 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:15,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:15,787 INFO L85 PathProgramCache]: Analyzing trace with hash -537141152, now seen corresponding path program 6 times [2024-10-12 18:34:15,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:15,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625239275] [2024-10-12 18:34:15,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:15,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:15,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:15,942 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:15,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:15,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625239275] [2024-10-12 18:34:15,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625239275] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:15,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571307352] [2024-10-12 18:34:15,943 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-12 18:34:15,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:15,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:15,944 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:15,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-12 18:34:15,984 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-10-12 18:34:15,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:15,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-12 18:34:15,986 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:16,174 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:16,174 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:16,271 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:16,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571307352] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:16,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:16,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 25 [2024-10-12 18:34:16,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753769617] [2024-10-12 18:34:16,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:16,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-12 18:34:16,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:16,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-12 18:34:16,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2024-10-12 18:34:16,273 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 26 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 25 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:16,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:16,358 INFO L93 Difference]: Finished difference Result 79 states and 87 transitions. [2024-10-12 18:34:16,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 18:34:16,358 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 25 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-10-12 18:34:16,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:16,359 INFO L225 Difference]: With dead ends: 79 [2024-10-12 18:34:16,359 INFO L226 Difference]: Without dead ends: 60 [2024-10-12 18:34:16,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 30 SyntacticMatches, 10 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=569, Unknown=0, NotChecked=0, Total=702 [2024-10-12 18:34:16,360 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:16,360 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 142 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:16,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-10-12 18:34:16,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 36. [2024-10-12 18:34:16,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2) internal successors, (42), 35 states have internal predecessors, (42), 0 states have call successors, (0), 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 18:34:16,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2024-10-12 18:34:16,366 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 26 [2024-10-12 18:34:16,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:16,366 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2024-10-12 18:34:16,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 25 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:16,366 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2024-10-12 18:34:16,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-12 18:34:16,366 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:16,367 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:16,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-12 18:34:16,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-12 18:34:16,567 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:16,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:16,568 INFO L85 PathProgramCache]: Analyzing trace with hash -199209087, now seen corresponding path program 4 times [2024-10-12 18:34:16,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:16,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658320331] [2024-10-12 18:34:16,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:16,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:16,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:16,726 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:16,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:16,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658320331] [2024-10-12 18:34:16,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658320331] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:16,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568917626] [2024-10-12 18:34:16,726 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-12 18:34:16,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:16,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:16,728 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:16,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-12 18:34:16,776 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-12 18:34:16,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:16,778 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-12 18:34:16,779 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:16,961 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:16,961 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:17,051 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:17,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568917626] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:17,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:17,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 24 [2024-10-12 18:34:17,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504770548] [2024-10-12 18:34:17,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:17,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-12 18:34:17,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:17,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-12 18:34:17,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=479, Unknown=0, NotChecked=0, Total=600 [2024-10-12 18:34:17,053 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 25 states, 25 states have (on average 2.08) internal successors, (52), 24 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:17,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:17,145 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2024-10-12 18:34:17,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 18:34:17,146 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.08) internal successors, (52), 24 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-10-12 18:34:17,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:17,147 INFO L225 Difference]: With dead ends: 79 [2024-10-12 18:34:17,147 INFO L226 Difference]: Without dead ends: 60 [2024-10-12 18:34:17,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 31 SyntacticMatches, 10 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=521, Unknown=0, NotChecked=0, Total=650 [2024-10-12 18:34:17,148 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:17,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 104 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:17,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-10-12 18:34:17,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 38. [2024-10-12 18:34:17,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 37 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:17,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2024-10-12 18:34:17,154 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 26 [2024-10-12 18:34:17,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:17,155 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2024-10-12 18:34:17,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.08) internal successors, (52), 24 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:17,155 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2024-10-12 18:34:17,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-12 18:34:17,156 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:17,156 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:17,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-10-12 18:34:17,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:17,357 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:17,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:17,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1780958323, now seen corresponding path program 8 times [2024-10-12 18:34:17,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:17,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567843263] [2024-10-12 18:34:17,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:17,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:17,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:17,463 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:17,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:17,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567843263] [2024-10-12 18:34:17,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567843263] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:17,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288925371] [2024-10-12 18:34:17,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 18:34:17,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:17,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:17,466 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:17,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-12 18:34:17,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 18:34:17,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:17,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-12 18:34:17,520 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:17,569 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:17,570 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:17,649 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:17,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288925371] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:17,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:17,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2024-10-12 18:34:17,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128367679] [2024-10-12 18:34:17,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:17,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-12 18:34:17,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:17,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-12 18:34:17,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-12 18:34:17,651 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 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 18:34:17,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:17,761 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2024-10-12 18:34:17,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 18:34:17,762 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-10-12 18:34:17,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:17,762 INFO L225 Difference]: With dead ends: 49 [2024-10-12 18:34:17,762 INFO L226 Difference]: Without dead ends: 47 [2024-10-12 18:34:17,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 44 SyntacticMatches, 11 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2024-10-12 18:34:17,763 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 16 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:17,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 73 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:17,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-10-12 18:34:17,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2024-10-12 18:34:17,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.2) internal successors, (48), 40 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:17,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2024-10-12 18:34:17,770 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 27 [2024-10-12 18:34:17,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:17,770 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2024-10-12 18:34:17,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 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 18:34:17,770 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2024-10-12 18:34:17,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-12 18:34:17,771 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:17,771 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:17,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-10-12 18:34:17,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:17,971 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:17,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:17,972 INFO L85 PathProgramCache]: Analyzing trace with hash 803236125, now seen corresponding path program 9 times [2024-10-12 18:34:17,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:17,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615567940] [2024-10-12 18:34:17,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:17,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:18,152 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 27 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:18,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:18,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615567940] [2024-10-12 18:34:18,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615567940] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:18,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349577234] [2024-10-12 18:34:18,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 18:34:18,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:18,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:18,155 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:18,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-12 18:34:18,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-12 18:34:18,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:18,211 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-12 18:34:18,212 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:18,489 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 40 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:18,489 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:18,615 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 40 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:18,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349577234] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:18,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:18,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2024-10-12 18:34:18,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867808255] [2024-10-12 18:34:18,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:18,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-12 18:34:18,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:18,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-12 18:34:18,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=849, Unknown=0, NotChecked=0, Total=1056 [2024-10-12 18:34:18,617 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 33 states, 33 states have (on average 1.9393939393939394) internal successors, (64), 32 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:18,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:18,743 INFO L93 Difference]: Finished difference Result 89 states and 98 transitions. [2024-10-12 18:34:18,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-12 18:34:18,743 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.9393939393939394) internal successors, (64), 32 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-10-12 18:34:18,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:18,744 INFO L225 Difference]: With dead ends: 89 [2024-10-12 18:34:18,744 INFO L226 Difference]: Without dead ends: 67 [2024-10-12 18:34:18,744 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 31 SyntacticMatches, 12 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 699 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2024-10-12 18:34:18,745 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 9 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:18,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 182 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:18,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-10-12 18:34:18,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 42. [2024-10-12 18:34:18,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:18,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2024-10-12 18:34:18,768 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 30 [2024-10-12 18:34:18,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:18,768 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2024-10-12 18:34:18,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.9393939393939394) internal successors, (64), 32 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:18,768 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2024-10-12 18:34:18,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-12 18:34:18,769 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:18,769 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:18,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-10-12 18:34:18,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-12 18:34:18,971 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:18,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:18,971 INFO L85 PathProgramCache]: Analyzing trace with hash -239607076, now seen corresponding path program 7 times [2024-10-12 18:34:18,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:18,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120947926] [2024-10-12 18:34:18,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:18,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:19,165 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 27 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:19,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:19,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120947926] [2024-10-12 18:34:19,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120947926] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:19,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110593382] [2024-10-12 18:34:19,165 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-12 18:34:19,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:19,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:19,167 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:19,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-12 18:34:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:19,211 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-12 18:34:19,212 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:19,472 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 40 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:19,472 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:19,591 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 40 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:19,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110593382] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:19,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:19,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2024-10-12 18:34:19,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740297767] [2024-10-12 18:34:19,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:19,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-12 18:34:19,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:19,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-12 18:34:19,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=804, Unknown=0, NotChecked=0, Total=992 [2024-10-12 18:34:19,593 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 32 states, 32 states have (on average 1.96875) internal successors, (63), 31 states have internal predecessors, (63), 0 states have call successors, (0), 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 18:34:19,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:19,673 INFO L93 Difference]: Finished difference Result 93 states and 102 transitions. [2024-10-12 18:34:19,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-12 18:34:19,674 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.96875) internal successors, (63), 31 states have internal predecessors, (63), 0 states have call successors, (0), 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 30 [2024-10-12 18:34:19,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:19,674 INFO L225 Difference]: With dead ends: 93 [2024-10-12 18:34:19,675 INFO L226 Difference]: Without dead ends: 71 [2024-10-12 18:34:19,675 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 32 SyntacticMatches, 12 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=860, Unknown=0, NotChecked=0, Total=1056 [2024-10-12 18:34:19,675 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 9 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:19,676 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 107 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:19,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-10-12 18:34:19,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 42. [2024-10-12 18:34:19,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:19,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2024-10-12 18:34:19,683 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 30 [2024-10-12 18:34:19,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:19,683 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2024-10-12 18:34:19,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.96875) internal successors, (63), 31 states have internal predecessors, (63), 0 states have call successors, (0), 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 18:34:19,683 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2024-10-12 18:34:19,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-12 18:34:19,683 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:19,683 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:19,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-10-12 18:34:19,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-12 18:34:19,888 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:19,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:19,888 INFO L85 PathProgramCache]: Analyzing trace with hash 3847485, now seen corresponding path program 8 times [2024-10-12 18:34:19,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:19,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941331405] [2024-10-12 18:34:19,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:19,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:19,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:20,058 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 27 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:20,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:20,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941331405] [2024-10-12 18:34:20,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941331405] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:20,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093245408] [2024-10-12 18:34:20,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 18:34:20,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:20,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:20,060 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:20,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-10-12 18:34:20,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 18:34:20,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:20,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-12 18:34:20,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:20,311 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 40 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:20,311 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:20,431 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 40 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:20,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093245408] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:20,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:20,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 30 [2024-10-12 18:34:20,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185083641] [2024-10-12 18:34:20,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:20,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-12 18:34:20,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:20,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-12 18:34:20,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=757, Unknown=0, NotChecked=0, Total=930 [2024-10-12 18:34:20,433 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 31 states, 31 states have (on average 2.0) internal successors, (62), 30 states have internal predecessors, (62), 0 states have call successors, (0), 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 18:34:20,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:20,543 INFO L93 Difference]: Finished difference Result 95 states and 104 transitions. [2024-10-12 18:34:20,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-12 18:34:20,543 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.0) internal successors, (62), 30 states have internal predecessors, (62), 0 states have call successors, (0), 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 30 [2024-10-12 18:34:20,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:20,544 INFO L225 Difference]: With dead ends: 95 [2024-10-12 18:34:20,544 INFO L226 Difference]: Without dead ends: 73 [2024-10-12 18:34:20,545 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 33 SyntacticMatches, 12 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2024-10-12 18:34:20,545 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 9 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:20,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 176 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:20,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-10-12 18:34:20,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 42. [2024-10-12 18:34:20,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:20,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2024-10-12 18:34:20,553 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 30 [2024-10-12 18:34:20,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:20,553 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2024-10-12 18:34:20,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.0) internal successors, (62), 30 states have internal predecessors, (62), 0 states have call successors, (0), 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 18:34:20,553 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2024-10-12 18:34:20,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-12 18:34:20,554 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:20,554 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:20,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-10-12 18:34:20,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:20,755 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:20,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:20,755 INFO L85 PathProgramCache]: Analyzing trace with hash -2066509124, now seen corresponding path program 9 times [2024-10-12 18:34:20,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:20,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458547591] [2024-10-12 18:34:20,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:20,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:20,922 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 27 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:20,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:20,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458547591] [2024-10-12 18:34:20,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458547591] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:20,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173008544] [2024-10-12 18:34:20,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 18:34:20,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:20,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:20,924 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:20,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-10-12 18:34:20,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-12 18:34:20,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:20,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-12 18:34:20,984 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:21,250 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 40 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:21,250 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:21,381 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 40 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:21,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173008544] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:21,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:21,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 29 [2024-10-12 18:34:21,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666416914] [2024-10-12 18:34:21,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:21,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-12 18:34:21,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:21,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-12 18:34:21,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=708, Unknown=0, NotChecked=0, Total=870 [2024-10-12 18:34:21,383 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 30 states, 30 states have (on average 2.033333333333333) internal successors, (61), 29 states have internal predecessors, (61), 0 states have call successors, (0), 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 18:34:21,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:21,490 INFO L93 Difference]: Finished difference Result 95 states and 104 transitions. [2024-10-12 18:34:21,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-12 18:34:21,490 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.033333333333333) internal successors, (61), 29 states have internal predecessors, (61), 0 states have call successors, (0), 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 30 [2024-10-12 18:34:21,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:21,491 INFO L225 Difference]: With dead ends: 95 [2024-10-12 18:34:21,491 INFO L226 Difference]: Without dead ends: 73 [2024-10-12 18:34:21,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 34 SyntacticMatches, 12 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=170, Invalid=760, Unknown=0, NotChecked=0, Total=930 [2024-10-12 18:34:21,492 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 9 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:21,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 155 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:21,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-10-12 18:34:21,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 42. [2024-10-12 18:34:21,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:21,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2024-10-12 18:34:21,500 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 30 [2024-10-12 18:34:21,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:21,500 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2024-10-12 18:34:21,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.033333333333333) internal successors, (61), 29 states have internal predecessors, (61), 0 states have call successors, (0), 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 18:34:21,500 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2024-10-12 18:34:21,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-12 18:34:21,501 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:21,501 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:21,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-10-12 18:34:21,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:21,702 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:21,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:21,702 INFO L85 PathProgramCache]: Analyzing trace with hash 83462493, now seen corresponding path program 10 times [2024-10-12 18:34:21,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:21,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221365559] [2024-10-12 18:34:21,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:21,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:21,878 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 27 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:21,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:21,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221365559] [2024-10-12 18:34:21,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221365559] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:21,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456213046] [2024-10-12 18:34:21,878 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-12 18:34:21,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:21,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:21,880 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:21,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-10-12 18:34:21,924 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-12 18:34:21,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:21,925 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-12 18:34:21,925 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:22,113 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 40 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:22,113 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:22,258 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 40 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:22,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456213046] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:22,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:22,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 28 [2024-10-12 18:34:22,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353385321] [2024-10-12 18:34:22,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:22,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-12 18:34:22,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:22,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-12 18:34:22,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2024-10-12 18:34:22,260 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 29 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 28 states have internal predecessors, (60), 0 states have call successors, (0), 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 18:34:22,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:22,384 INFO L93 Difference]: Finished difference Result 93 states and 102 transitions. [2024-10-12 18:34:22,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-12 18:34:22,385 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 28 states have internal predecessors, (60), 0 states have call successors, (0), 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 30 [2024-10-12 18:34:22,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:22,385 INFO L225 Difference]: With dead ends: 93 [2024-10-12 18:34:22,385 INFO L226 Difference]: Without dead ends: 71 [2024-10-12 18:34:22,386 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 35 SyntacticMatches, 12 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=707, Unknown=0, NotChecked=0, Total=870 [2024-10-12 18:34:22,386 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 9 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:22,387 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 141 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:22,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-10-12 18:34:22,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 42. [2024-10-12 18:34:22,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:22,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2024-10-12 18:34:22,400 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 30 [2024-10-12 18:34:22,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:22,400 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2024-10-12 18:34:22,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 28 states have internal predecessors, (60), 0 states have call successors, (0), 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 18:34:22,400 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2024-10-12 18:34:22,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-12 18:34:22,401 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:22,401 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:22,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-10-12 18:34:22,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-10-12 18:34:22,605 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:22,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:22,605 INFO L85 PathProgramCache]: Analyzing trace with hash 14269084, now seen corresponding path program 5 times [2024-10-12 18:34:22,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:22,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153250795] [2024-10-12 18:34:22,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:22,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:22,767 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 27 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:22,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:22,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153250795] [2024-10-12 18:34:22,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153250795] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:22,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201551772] [2024-10-12 18:34:22,768 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-12 18:34:22,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:22,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:22,770 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:22,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-10-12 18:34:22,818 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-10-12 18:34:22,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:22,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-12 18:34:22,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:22,997 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 40 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:22,997 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:23,137 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 40 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:23,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201551772] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:23,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:23,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 27 [2024-10-12 18:34:23,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631559265] [2024-10-12 18:34:23,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:23,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-12 18:34:23,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:23,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-12 18:34:23,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2024-10-12 18:34:23,139 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 28 states, 28 states have (on average 2.107142857142857) internal successors, (59), 27 states have internal predecessors, (59), 0 states have call successors, (0), 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 18:34:23,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:23,238 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2024-10-12 18:34:23,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-12 18:34:23,238 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.107142857142857) internal successors, (59), 27 states have internal predecessors, (59), 0 states have call successors, (0), 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 30 [2024-10-12 18:34:23,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:23,239 INFO L225 Difference]: With dead ends: 92 [2024-10-12 18:34:23,239 INFO L226 Difference]: Without dead ends: 70 [2024-10-12 18:34:23,239 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 36 SyntacticMatches, 12 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2024-10-12 18:34:23,240 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:23,240 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 106 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:23,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-10-12 18:34:23,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 44. [2024-10-12 18:34:23,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.2093023255813953) internal successors, (52), 43 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:23,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2024-10-12 18:34:23,247 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 30 [2024-10-12 18:34:23,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:23,248 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2024-10-12 18:34:23,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.107142857142857) internal successors, (59), 27 states have internal predecessors, (59), 0 states have call successors, (0), 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 18:34:23,248 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2024-10-12 18:34:23,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-12 18:34:23,248 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:23,248 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:23,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-10-12 18:34:23,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-12 18:34:23,449 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:23,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:23,449 INFO L85 PathProgramCache]: Analyzing trace with hash -2085046961, now seen corresponding path program 10 times [2024-10-12 18:34:23,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:23,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419893424] [2024-10-12 18:34:23,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:23,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:23,577 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 15 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:23,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:23,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419893424] [2024-10-12 18:34:23,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419893424] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:23,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413765191] [2024-10-12 18:34:23,578 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-12 18:34:23,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:23,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:23,580 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:23,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-10-12 18:34:23,635 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-12 18:34:23,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:23,637 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-12 18:34:23,638 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:23,681 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:23,681 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:23,772 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:23,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413765191] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:23,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:23,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2024-10-12 18:34:23,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155114081] [2024-10-12 18:34:23,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:23,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 18:34:23,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:23,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 18:34:23,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-10-12 18:34:23,774 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 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 18:34:23,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:23,854 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2024-10-12 18:34:23,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-12 18:34:23,854 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 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 31 [2024-10-12 18:34:23,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:23,855 INFO L225 Difference]: With dead ends: 55 [2024-10-12 18:34:23,855 INFO L226 Difference]: Without dead ends: 53 [2024-10-12 18:34:23,855 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 52 SyntacticMatches, 12 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2024-10-12 18:34:23,856 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 18 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:23,856 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 91 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:34:23,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-10-12 18:34:23,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2024-10-12 18:34:23,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 46 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:23,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2024-10-12 18:34:23,863 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 31 [2024-10-12 18:34:23,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:23,864 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2024-10-12 18:34:23,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 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 18:34:23,864 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2024-10-12 18:34:23,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-12 18:34:23,864 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:23,864 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:23,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-10-12 18:34:24,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-12 18:34:24,065 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:24,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:24,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1812137279, now seen corresponding path program 11 times [2024-10-12 18:34:24,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:24,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452919335] [2024-10-12 18:34:24,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:24,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:24,249 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 41 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:24,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:24,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452919335] [2024-10-12 18:34:24,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452919335] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:24,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351240637] [2024-10-12 18:34:24,249 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-12 18:34:24,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:24,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:24,251 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:24,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-10-12 18:34:24,299 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-10-12 18:34:24,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:24,300 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-12 18:34:24,301 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:24,597 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:24,598 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:24,772 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:24,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351240637] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:24,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:24,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 36 [2024-10-12 18:34:24,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56452726] [2024-10-12 18:34:24,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:24,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-10-12 18:34:24,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:24,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-10-12 18:34:24,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=1073, Unknown=0, NotChecked=0, Total=1332 [2024-10-12 18:34:24,775 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 37 states, 37 states have (on average 1.945945945945946) internal successors, (72), 36 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 18:34:24,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:24,887 INFO L93 Difference]: Finished difference Result 102 states and 112 transitions. [2024-10-12 18:34:24,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-12 18:34:24,888 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.945945945945946) internal successors, (72), 36 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 34 [2024-10-12 18:34:24,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:24,888 INFO L225 Difference]: With dead ends: 102 [2024-10-12 18:34:24,888 INFO L226 Difference]: Without dead ends: 77 [2024-10-12 18:34:24,890 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 35 SyntacticMatches, 14 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 926 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=267, Invalid=1139, Unknown=0, NotChecked=0, Total=1406 [2024-10-12 18:34:24,890 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 9 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:24,891 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 127 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:24,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-10-12 18:34:24,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 48. [2024-10-12 18:34:24,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 47 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:24,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2024-10-12 18:34:24,898 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 34 [2024-10-12 18:34:24,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:24,898 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2024-10-12 18:34:24,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.945945945945946) internal successors, (72), 36 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 18:34:24,899 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2024-10-12 18:34:24,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-12 18:34:24,899 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:24,899 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:24,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-10-12 18:34:25,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-12 18:34:25,099 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:25,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:25,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1173585152, now seen corresponding path program 11 times [2024-10-12 18:34:25,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:25,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125375915] [2024-10-12 18:34:25,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:25,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:25,320 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 41 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:25,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:25,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125375915] [2024-10-12 18:34:25,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125375915] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:25,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345786026] [2024-10-12 18:34:25,321 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-12 18:34:25,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:25,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:25,323 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:25,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-10-12 18:34:25,381 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-10-12 18:34:25,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:25,382 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-12 18:34:25,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:25,662 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 57 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:25,662 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:25,793 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 57 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:25,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345786026] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:25,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:25,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 35 [2024-10-12 18:34:25,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031828949] [2024-10-12 18:34:25,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:25,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-12 18:34:25,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:25,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-12 18:34:25,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1023, Unknown=0, NotChecked=0, Total=1260 [2024-10-12 18:34:25,795 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 36 states, 36 states have (on average 1.9722222222222223) internal successors, (71), 35 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 18:34:25,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:25,884 INFO L93 Difference]: Finished difference Result 107 states and 117 transitions. [2024-10-12 18:34:25,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-12 18:34:25,884 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9722222222222223) internal successors, (71), 35 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 34 [2024-10-12 18:34:25,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:25,885 INFO L225 Difference]: With dead ends: 107 [2024-10-12 18:34:25,885 INFO L226 Difference]: Without dead ends: 82 [2024-10-12 18:34:25,885 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 36 SyntacticMatches, 14 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 871 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=245, Invalid=1087, Unknown=0, NotChecked=0, Total=1332 [2024-10-12 18:34:25,886 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 9 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:25,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 106 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:25,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-10-12 18:34:25,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 48. [2024-10-12 18:34:25,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 47 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:25,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2024-10-12 18:34:25,895 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 34 [2024-10-12 18:34:25,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:25,895 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2024-10-12 18:34:25,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.9722222222222223) internal successors, (71), 35 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 18:34:25,896 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2024-10-12 18:34:25,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-12 18:34:25,896 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:25,896 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:25,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-10-12 18:34:26,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-12 18:34:26,097 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:26,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:26,097 INFO L85 PathProgramCache]: Analyzing trace with hash -669763871, now seen corresponding path program 12 times [2024-10-12 18:34:26,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:26,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177849028] [2024-10-12 18:34:26,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:26,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:26,322 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 41 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:26,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:26,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177849028] [2024-10-12 18:34:26,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177849028] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:26,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349106382] [2024-10-12 18:34:26,322 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-12 18:34:26,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:26,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:26,324 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:26,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-10-12 18:34:26,373 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-10-12 18:34:26,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:26,374 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-12 18:34:26,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:26,654 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 57 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:26,654 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:26,816 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 57 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:26,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349106382] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:26,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:26,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 34 [2024-10-12 18:34:26,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992579222] [2024-10-12 18:34:26,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:26,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-10-12 18:34:26,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:26,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-10-12 18:34:26,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=971, Unknown=0, NotChecked=0, Total=1190 [2024-10-12 18:34:26,818 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 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 18:34:26,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:26,962 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2024-10-12 18:34:26,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-12 18:34:26,962 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 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 34 [2024-10-12 18:34:26,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:26,962 INFO L225 Difference]: With dead ends: 110 [2024-10-12 18:34:26,963 INFO L226 Difference]: Without dead ends: 85 [2024-10-12 18:34:26,963 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 37 SyntacticMatches, 14 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=227, Invalid=1033, Unknown=0, NotChecked=0, Total=1260 [2024-10-12 18:34:26,964 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 9 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:26,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 162 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:26,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-10-12 18:34:26,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 48. [2024-10-12 18:34:26,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 47 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:26,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2024-10-12 18:34:26,974 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 34 [2024-10-12 18:34:26,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:26,974 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2024-10-12 18:34:26,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 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 18:34:26,974 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2024-10-12 18:34:26,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-12 18:34:26,975 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:26,975 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:26,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-10-12 18:34:27,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:27,175 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:27,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:27,176 INFO L85 PathProgramCache]: Analyzing trace with hash -2114700064, now seen corresponding path program 13 times [2024-10-12 18:34:27,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:27,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549226026] [2024-10-12 18:34:27,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:27,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:27,353 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 41 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:27,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:27,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549226026] [2024-10-12 18:34:27,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549226026] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:27,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531209118] [2024-10-12 18:34:27,354 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-12 18:34:27,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:27,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:27,355 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:27,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-10-12 18:34:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:27,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-12 18:34:27,405 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:27,649 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 57 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:27,649 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:27,803 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 57 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:27,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531209118] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:27,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:27,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 33 [2024-10-12 18:34:27,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579228182] [2024-10-12 18:34:27,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:27,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-12 18:34:27,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:27,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-12 18:34:27,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=917, Unknown=0, NotChecked=0, Total=1122 [2024-10-12 18:34:27,805 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 34 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 33 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:27,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:27,969 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2024-10-12 18:34:27,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-12 18:34:27,969 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 33 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-10-12 18:34:27,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:27,970 INFO L225 Difference]: With dead ends: 111 [2024-10-12 18:34:27,970 INFO L226 Difference]: Without dead ends: 86 [2024-10-12 18:34:27,970 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 38 SyntacticMatches, 14 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=213, Invalid=977, Unknown=0, NotChecked=0, Total=1190 [2024-10-12 18:34:27,971 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 9 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:27,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 170 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:27,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-10-12 18:34:27,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 48. [2024-10-12 18:34:27,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 47 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:27,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2024-10-12 18:34:27,981 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 34 [2024-10-12 18:34:27,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:27,981 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2024-10-12 18:34:27,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 33 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:27,981 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2024-10-12 18:34:27,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-12 18:34:27,982 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:27,982 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:27,995 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-10-12 18:34:28,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-10-12 18:34:28,182 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:28,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:28,183 INFO L85 PathProgramCache]: Analyzing trace with hash -83100927, now seen corresponding path program 14 times [2024-10-12 18:34:28,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:28,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846149651] [2024-10-12 18:34:28,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:28,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:28,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:28,382 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 41 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:28,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:28,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846149651] [2024-10-12 18:34:28,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846149651] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:28,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126345667] [2024-10-12 18:34:28,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 18:34:28,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:28,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:28,385 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:28,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-10-12 18:34:28,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 18:34:28,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:28,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-12 18:34:28,437 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:28,684 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 57 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:28,685 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:28,818 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 57 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:28,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126345667] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:28,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:28,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 32 [2024-10-12 18:34:28,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077934686] [2024-10-12 18:34:28,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:28,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-12 18:34:28,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:28,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-12 18:34:28,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=861, Unknown=0, NotChecked=0, Total=1056 [2024-10-12 18:34:28,820 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 33 states, 33 states have (on average 2.0606060606060606) internal successors, (68), 32 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:28,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:28,995 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2024-10-12 18:34:28,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-12 18:34:28,995 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0606060606060606) internal successors, (68), 32 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-10-12 18:34:28,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:28,996 INFO L225 Difference]: With dead ends: 110 [2024-10-12 18:34:28,996 INFO L226 Difference]: Without dead ends: 85 [2024-10-12 18:34:28,997 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 39 SyntacticMatches, 14 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=203, Invalid=919, Unknown=0, NotChecked=0, Total=1122 [2024-10-12 18:34:28,997 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 9 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:28,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 139 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:28,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-10-12 18:34:29,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 48. [2024-10-12 18:34:29,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 47 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:29,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2024-10-12 18:34:29,013 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 34 [2024-10-12 18:34:29,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:29,013 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2024-10-12 18:34:29,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.0606060606060606) internal successors, (68), 32 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:29,014 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2024-10-12 18:34:29,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-12 18:34:29,014 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:29,014 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:29,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-10-12 18:34:29,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:29,215 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:29,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:29,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1125944128, now seen corresponding path program 15 times [2024-10-12 18:34:29,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:29,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955668163] [2024-10-12 18:34:29,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:29,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:29,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:29,385 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 41 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:29,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:29,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955668163] [2024-10-12 18:34:29,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955668163] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:29,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383631897] [2024-10-12 18:34:29,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 18:34:29,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:29,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:29,388 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:29,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-10-12 18:34:29,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-10-12 18:34:29,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:29,439 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-12 18:34:29,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:29,675 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 57 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:29,675 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:29,850 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 57 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:29,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383631897] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:29,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:29,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 31 [2024-10-12 18:34:29,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177786788] [2024-10-12 18:34:29,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:29,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-12 18:34:29,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:29,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-12 18:34:29,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=803, Unknown=0, NotChecked=0, Total=992 [2024-10-12 18:34:29,852 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 32 states, 32 states have (on average 2.09375) internal successors, (67), 31 states have internal predecessors, (67), 0 states have call successors, (0), 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 18:34:29,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:29,982 INFO L93 Difference]: Finished difference Result 107 states and 117 transitions. [2024-10-12 18:34:29,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-12 18:34:29,983 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.09375) internal successors, (67), 31 states have internal predecessors, (67), 0 states have call successors, (0), 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 34 [2024-10-12 18:34:29,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:29,983 INFO L225 Difference]: With dead ends: 107 [2024-10-12 18:34:29,983 INFO L226 Difference]: Without dead ends: 82 [2024-10-12 18:34:29,984 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 40 SyntacticMatches, 14 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=197, Invalid=859, Unknown=0, NotChecked=0, Total=1056 [2024-10-12 18:34:29,984 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 9 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:29,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 127 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:29,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-10-12 18:34:29,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 48. [2024-10-12 18:34:29,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 47 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:29,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2024-10-12 18:34:29,996 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 34 [2024-10-12 18:34:29,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:29,996 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2024-10-12 18:34:29,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.09375) internal successors, (67), 31 states have internal predecessors, (67), 0 states have call successors, (0), 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 18:34:29,996 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2024-10-12 18:34:29,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-12 18:34:29,997 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:29,997 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:30,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-10-12 18:34:30,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:30,198 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:30,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:30,198 INFO L85 PathProgramCache]: Analyzing trace with hash -882489567, now seen corresponding path program 6 times [2024-10-12 18:34:30,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:30,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100828376] [2024-10-12 18:34:30,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:30,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:30,364 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 41 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:30,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:30,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100828376] [2024-10-12 18:34:30,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100828376] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:30,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468814654] [2024-10-12 18:34:30,364 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-12 18:34:30,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:30,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:30,365 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:30,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-10-12 18:34:30,418 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-10-12 18:34:30,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:30,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-12 18:34:30,419 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:30,623 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:30,624 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:30,782 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:30,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468814654] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:30,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:30,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 30 [2024-10-12 18:34:30,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966542639] [2024-10-12 18:34:30,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:30,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-12 18:34:30,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:30,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-12 18:34:30,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=743, Unknown=0, NotChecked=0, Total=930 [2024-10-12 18:34:30,784 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 30 states have internal predecessors, (66), 0 states have call successors, (0), 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 18:34:30,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:30,888 INFO L93 Difference]: Finished difference Result 105 states and 116 transitions. [2024-10-12 18:34:30,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-12 18:34:30,888 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 30 states have internal predecessors, (66), 0 states have call successors, (0), 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 34 [2024-10-12 18:34:30,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:30,889 INFO L225 Difference]: With dead ends: 105 [2024-10-12 18:34:30,889 INFO L226 Difference]: Without dead ends: 80 [2024-10-12 18:34:30,889 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 41 SyntacticMatches, 14 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2024-10-12 18:34:30,889 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:30,890 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 88 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:30,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-10-12 18:34:30,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 50. [2024-10-12 18:34:30,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 49 states have internal predecessors, (59), 0 states have call successors, (0), 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 18:34:30,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2024-10-12 18:34:30,899 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 34 [2024-10-12 18:34:30,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:30,899 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2024-10-12 18:34:30,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 30 states have internal predecessors, (66), 0 states have call successors, (0), 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 18:34:30,899 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2024-10-12 18:34:30,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-12 18:34:30,899 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:30,899 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:30,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-10-12 18:34:31,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-10-12 18:34:31,100 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:31,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:31,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1838145011, now seen corresponding path program 12 times [2024-10-12 18:34:31,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:31,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678369955] [2024-10-12 18:34:31,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:31,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:31,209 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 21 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:31,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:31,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678369955] [2024-10-12 18:34:31,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678369955] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:31,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758764875] [2024-10-12 18:34:31,210 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-12 18:34:31,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:31,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:31,211 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:31,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-10-12 18:34:31,265 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-10-12 18:34:31,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:31,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-12 18:34:31,267 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:31,310 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:31,310 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:31,417 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:31,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758764875] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:31,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:31,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2024-10-12 18:34:31,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615401349] [2024-10-12 18:34:31,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:31,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-12 18:34:31,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:31,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-12 18:34:31,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-10-12 18:34:31,418 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 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 18:34:31,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:31,527 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2024-10-12 18:34:31,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-12 18:34:31,527 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 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 35 [2024-10-12 18:34:31,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:31,528 INFO L225 Difference]: With dead ends: 61 [2024-10-12 18:34:31,528 INFO L226 Difference]: Without dead ends: 59 [2024-10-12 18:34:31,528 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 59 SyntacticMatches, 14 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=243, Unknown=0, NotChecked=0, Total=380 [2024-10-12 18:34:31,529 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 22 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:31,529 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 109 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:31,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-10-12 18:34:31,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2024-10-12 18:34:31,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.1923076923076923) internal successors, (62), 52 states have internal predecessors, (62), 0 states have call successors, (0), 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 18:34:31,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2024-10-12 18:34:31,539 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 35 [2024-10-12 18:34:31,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:31,539 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2024-10-12 18:34:31,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 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 18:34:31,539 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2024-10-12 18:34:31,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-12 18:34:31,539 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:31,539 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:31,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-10-12 18:34:31,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-10-12 18:34:31,740 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:31,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:31,741 INFO L85 PathProgramCache]: Analyzing trace with hash -650158179, now seen corresponding path program 13 times [2024-10-12 18:34:31,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:31,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196844049] [2024-10-12 18:34:31,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:31,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:31,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:32,006 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 58 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:32,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:32,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196844049] [2024-10-12 18:34:32,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196844049] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:32,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831861485] [2024-10-12 18:34:32,007 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-12 18:34:32,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:32,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:32,009 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:32,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-10-12 18:34:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:32,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-12 18:34:32,075 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:32,416 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 77 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:32,416 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:32,582 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 77 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:32,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831861485] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:32,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:32,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 40 [2024-10-12 18:34:32,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742355078] [2024-10-12 18:34:32,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:32,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-10-12 18:34:32,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:32,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-10-12 18:34:32,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=1323, Unknown=0, NotChecked=0, Total=1640 [2024-10-12 18:34:32,584 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand has 41 states, 41 states have (on average 1.951219512195122) internal successors, (80), 40 states have internal predecessors, (80), 0 states have call successors, (0), 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 18:34:32,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:32,708 INFO L93 Difference]: Finished difference Result 115 states and 126 transitions. [2024-10-12 18:34:32,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-12 18:34:32,708 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.951219512195122) internal successors, (80), 40 states have internal predecessors, (80), 0 states have call successors, (0), 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 38 [2024-10-12 18:34:32,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:32,708 INFO L225 Difference]: With dead ends: 115 [2024-10-12 18:34:32,708 INFO L226 Difference]: Without dead ends: 87 [2024-10-12 18:34:32,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 39 SyntacticMatches, 16 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1184 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=325, Invalid=1397, Unknown=0, NotChecked=0, Total=1722 [2024-10-12 18:34:32,709 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 9 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:32,709 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 148 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:32,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-10-12 18:34:32,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 54. [2024-10-12 18:34:32,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 53 states have internal predecessors, (63), 0 states have call successors, (0), 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 18:34:32,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2024-10-12 18:34:32,720 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 38 [2024-10-12 18:34:32,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:32,720 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2024-10-12 18:34:32,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.951219512195122) internal successors, (80), 40 states have internal predecessors, (80), 0 states have call successors, (0), 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 18:34:32,721 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2024-10-12 18:34:32,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-12 18:34:32,721 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:32,721 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:32,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-10-12 18:34:32,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-10-12 18:34:32,922 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:32,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:32,923 INFO L85 PathProgramCache]: Analyzing trace with hash -878925220, now seen corresponding path program 16 times [2024-10-12 18:34:32,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:32,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058309990] [2024-10-12 18:34:32,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:32,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:33,129 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 58 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:33,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:33,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058309990] [2024-10-12 18:34:33,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058309990] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:33,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272418610] [2024-10-12 18:34:33,130 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-12 18:34:33,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:33,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:33,131 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:33,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-10-12 18:34:33,191 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-12 18:34:33,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:33,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-12 18:34:33,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:33,568 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 77 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:33,569 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:33,732 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 77 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:33,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272418610] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:33,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:33,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 39 [2024-10-12 18:34:33,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347472312] [2024-10-12 18:34:33,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:33,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-10-12 18:34:33,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:33,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-10-12 18:34:33,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=1268, Unknown=0, NotChecked=0, Total=1560 [2024-10-12 18:34:33,734 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 40 states, 40 states have (on average 1.975) internal successors, (79), 39 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 18:34:33,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:33,866 INFO L93 Difference]: Finished difference Result 121 states and 132 transitions. [2024-10-12 18:34:33,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-12 18:34:33,866 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.975) internal successors, (79), 39 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 38 [2024-10-12 18:34:33,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:33,867 INFO L225 Difference]: With dead ends: 121 [2024-10-12 18:34:33,867 INFO L226 Difference]: Without dead ends: 93 [2024-10-12 18:34:33,867 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 40 SyntacticMatches, 16 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1122 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=300, Invalid=1340, Unknown=0, NotChecked=0, Total=1640 [2024-10-12 18:34:33,868 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 9 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:33,868 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 143 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:33,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-10-12 18:34:33,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 54. [2024-10-12 18:34:33,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 53 states have internal predecessors, (63), 0 states have call successors, (0), 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 18:34:33,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2024-10-12 18:34:33,884 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 38 [2024-10-12 18:34:33,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:33,884 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2024-10-12 18:34:33,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.975) internal successors, (79), 39 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 18:34:33,884 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2024-10-12 18:34:33,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-12 18:34:33,885 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:33,885 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:33,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-10-12 18:34:34,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:34,090 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:34,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:34,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1994683459, now seen corresponding path program 17 times [2024-10-12 18:34:34,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:34,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393535500] [2024-10-12 18:34:34,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:34,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:34,300 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 58 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:34,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:34,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393535500] [2024-10-12 18:34:34,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393535500] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:34,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222382582] [2024-10-12 18:34:34,300 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-12 18:34:34,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:34,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:34,302 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:34,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-10-12 18:34:34,358 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-10-12 18:34:34,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:34,359 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-12 18:34:34,360 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:34,664 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 77 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:34,664 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:34,817 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 77 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:34,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222382582] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:34,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:34,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 38 [2024-10-12 18:34:34,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658314326] [2024-10-12 18:34:34,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:34,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-10-12 18:34:34,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:34,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-10-12 18:34:34,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=1211, Unknown=0, NotChecked=0, Total=1482 [2024-10-12 18:34:34,819 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 39 states, 39 states have (on average 2.0) internal successors, (78), 38 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 18:34:34,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:34,943 INFO L93 Difference]: Finished difference Result 125 states and 136 transitions. [2024-10-12 18:34:34,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-12 18:34:34,943 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.0) internal successors, (78), 38 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 38 [2024-10-12 18:34:34,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:34,944 INFO L225 Difference]: With dead ends: 125 [2024-10-12 18:34:34,944 INFO L226 Difference]: Without dead ends: 97 [2024-10-12 18:34:34,944 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 41 SyntacticMatches, 16 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1033 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=279, Invalid=1281, Unknown=0, NotChecked=0, Total=1560 [2024-10-12 18:34:34,944 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 9 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:34,945 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 145 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:34,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-10-12 18:34:34,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 54. [2024-10-12 18:34:34,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 53 states have internal predecessors, (63), 0 states have call successors, (0), 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 18:34:34,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2024-10-12 18:34:34,961 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 38 [2024-10-12 18:34:34,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:34,961 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2024-10-12 18:34:34,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.0) internal successors, (78), 38 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 18:34:34,961 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2024-10-12 18:34:34,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-12 18:34:34,961 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:34,961 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:34,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-10-12 18:34:35,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-10-12 18:34:35,162 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:35,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:35,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1753580996, now seen corresponding path program 18 times [2024-10-12 18:34:35,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:35,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16724575] [2024-10-12 18:34:35,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:35,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:35,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:35,379 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 58 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:35,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:35,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16724575] [2024-10-12 18:34:35,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16724575] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:35,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076292670] [2024-10-12 18:34:35,380 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-12 18:34:35,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:35,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:35,381 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:35,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-10-12 18:34:35,438 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-10-12 18:34:35,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:35,439 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-12 18:34:35,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:35,732 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 77 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:35,732 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:35,895 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 77 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:35,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076292670] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:35,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:35,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 37 [2024-10-12 18:34:35,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491706655] [2024-10-12 18:34:35,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:35,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-10-12 18:34:35,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:35,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-10-12 18:34:35,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1152, Unknown=0, NotChecked=0, Total=1406 [2024-10-12 18:34:35,897 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 38 states, 38 states have (on average 2.026315789473684) internal successors, (77), 37 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 18:34:36,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:36,048 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2024-10-12 18:34:36,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-12 18:34:36,048 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.026315789473684) internal successors, (77), 37 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 38 [2024-10-12 18:34:36,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:36,049 INFO L225 Difference]: With dead ends: 127 [2024-10-12 18:34:36,049 INFO L226 Difference]: Without dead ends: 99 [2024-10-12 18:34:36,050 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 42 SyntacticMatches, 16 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=262, Invalid=1220, Unknown=0, NotChecked=0, Total=1482 [2024-10-12 18:34:36,050 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 9 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:36,050 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 198 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:36,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-10-12 18:34:36,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 54. [2024-10-12 18:34:36,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 53 states have internal predecessors, (63), 0 states have call successors, (0), 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 18:34:36,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2024-10-12 18:34:36,069 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 38 [2024-10-12 18:34:36,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:36,069 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2024-10-12 18:34:36,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.026315789473684) internal successors, (77), 37 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 18:34:36,069 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2024-10-12 18:34:36,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-12 18:34:36,070 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:36,070 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:36,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-10-12 18:34:36,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-10-12 18:34:36,270 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:36,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:36,271 INFO L85 PathProgramCache]: Analyzing trace with hash 609501149, now seen corresponding path program 19 times [2024-10-12 18:34:36,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:36,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520214615] [2024-10-12 18:34:36,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:36,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:36,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:36,519 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 58 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:36,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:36,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520214615] [2024-10-12 18:34:36,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520214615] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:36,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420625307] [2024-10-12 18:34:36,520 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-12 18:34:36,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:36,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:36,522 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:36,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-10-12 18:34:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:36,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-12 18:34:36,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:36,857 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 77 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:36,857 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:37,008 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 77 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:37,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420625307] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:37,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:37,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 36 [2024-10-12 18:34:37,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81796660] [2024-10-12 18:34:37,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:37,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-10-12 18:34:37,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:37,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-10-12 18:34:37,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1091, Unknown=0, NotChecked=0, Total=1332 [2024-10-12 18:34:37,010 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 37 states, 37 states have (on average 2.054054054054054) internal successors, (76), 36 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 18:34:37,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:37,161 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2024-10-12 18:34:37,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-12 18:34:37,161 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.054054054054054) internal successors, (76), 36 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 38 [2024-10-12 18:34:37,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:37,162 INFO L225 Difference]: With dead ends: 127 [2024-10-12 18:34:37,162 INFO L226 Difference]: Without dead ends: 99 [2024-10-12 18:34:37,162 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 43 SyntacticMatches, 16 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 864 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=249, Invalid=1157, Unknown=0, NotChecked=0, Total=1406 [2024-10-12 18:34:37,163 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 9 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:37,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 176 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:37,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-10-12 18:34:37,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 54. [2024-10-12 18:34:37,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 53 states have internal predecessors, (63), 0 states have call successors, (0), 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 18:34:37,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2024-10-12 18:34:37,178 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 38 [2024-10-12 18:34:37,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:37,179 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2024-10-12 18:34:37,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.054054054054054) internal successors, (76), 36 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 18:34:37,179 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2024-10-12 18:34:37,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-12 18:34:37,179 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:37,179 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:37,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-10-12 18:34:37,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-10-12 18:34:37,380 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:37,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:37,380 INFO L85 PathProgramCache]: Analyzing trace with hash -699743716, now seen corresponding path program 20 times [2024-10-12 18:34:37,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:37,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598351386] [2024-10-12 18:34:37,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:37,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:37,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:37,589 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 58 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:37,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:37,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598351386] [2024-10-12 18:34:37,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598351386] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:37,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679261961] [2024-10-12 18:34:37,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 18:34:37,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:37,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:37,591 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:37,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-10-12 18:34:37,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 18:34:37,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:37,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-12 18:34:37,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:37,949 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 77 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:37,950 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:38,117 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 77 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:38,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679261961] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:38,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:38,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 35 [2024-10-12 18:34:38,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811216431] [2024-10-12 18:34:38,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:38,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-12 18:34:38,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:38,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-12 18:34:38,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1028, Unknown=0, NotChecked=0, Total=1260 [2024-10-12 18:34:38,119 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 36 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 35 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 18:34:38,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:38,249 INFO L93 Difference]: Finished difference Result 125 states and 136 transitions. [2024-10-12 18:34:38,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-12 18:34:38,250 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 35 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 38 [2024-10-12 18:34:38,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:38,250 INFO L225 Difference]: With dead ends: 125 [2024-10-12 18:34:38,250 INFO L226 Difference]: Without dead ends: 97 [2024-10-12 18:34:38,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 44 SyntacticMatches, 16 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=240, Invalid=1092, Unknown=0, NotChecked=0, Total=1332 [2024-10-12 18:34:38,251 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 9 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:38,251 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 138 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:38,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-10-12 18:34:38,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 54. [2024-10-12 18:34:38,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 53 states have internal predecessors, (63), 0 states have call successors, (0), 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 18:34:38,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2024-10-12 18:34:38,264 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 38 [2024-10-12 18:34:38,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:38,265 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2024-10-12 18:34:38,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 35 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 18:34:38,265 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2024-10-12 18:34:38,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-12 18:34:38,265 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:38,265 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:38,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-10-12 18:34:38,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-10-12 18:34:38,466 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:38,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:38,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1751874557, now seen corresponding path program 21 times [2024-10-12 18:34:38,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:38,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328896205] [2024-10-12 18:34:38,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:38,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:38,679 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 58 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:38,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:38,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328896205] [2024-10-12 18:34:38,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328896205] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:38,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667459501] [2024-10-12 18:34:38,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 18:34:38,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:38,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:38,680 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:38,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-10-12 18:34:38,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-10-12 18:34:38,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:38,742 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-12 18:34:38,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:39,028 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 77 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:39,029 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:39,180 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 77 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:39,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667459501] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:39,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:39,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 34 [2024-10-12 18:34:39,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70159247] [2024-10-12 18:34:39,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:39,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-10-12 18:34:39,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:39,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-10-12 18:34:39,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=963, Unknown=0, NotChecked=0, Total=1190 [2024-10-12 18:34:39,182 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 35 states, 35 states have (on average 2.1142857142857143) internal successors, (74), 34 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 18:34:39,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:39,308 INFO L93 Difference]: Finished difference Result 121 states and 132 transitions. [2024-10-12 18:34:39,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-12 18:34:39,309 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.1142857142857143) internal successors, (74), 34 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 38 [2024-10-12 18:34:39,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:39,309 INFO L225 Difference]: With dead ends: 121 [2024-10-12 18:34:39,309 INFO L226 Difference]: Without dead ends: 93 [2024-10-12 18:34:39,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 45 SyntacticMatches, 16 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=235, Invalid=1025, Unknown=0, NotChecked=0, Total=1260 [2024-10-12 18:34:39,310 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 9 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:39,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 157 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:39,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-10-12 18:34:39,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 54. [2024-10-12 18:34:39,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 53 states have internal predecessors, (63), 0 states have call successors, (0), 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 18:34:39,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2024-10-12 18:34:39,327 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 38 [2024-10-12 18:34:39,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:39,327 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2024-10-12 18:34:39,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.1142857142857143) internal successors, (74), 34 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 18:34:39,327 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2024-10-12 18:34:39,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-12 18:34:39,327 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:39,327 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:39,340 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-10-12 18:34:39,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:39,528 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:39,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:39,529 INFO L85 PathProgramCache]: Analyzing trace with hash 306938364, now seen corresponding path program 7 times [2024-10-12 18:34:39,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:39,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113030841] [2024-10-12 18:34:39,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:39,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:39,769 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 58 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:39,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:39,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113030841] [2024-10-12 18:34:39,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113030841] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:39,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760514942] [2024-10-12 18:34:39,769 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-12 18:34:39,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:39,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:39,771 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:39,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-10-12 18:34:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:39,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-12 18:34:39,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:40,113 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 77 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:40,114 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:40,268 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 77 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:40,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760514942] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:40,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:40,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 33 [2024-10-12 18:34:40,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007807472] [2024-10-12 18:34:40,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:40,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-12 18:34:40,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:40,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-12 18:34:40,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=896, Unknown=0, NotChecked=0, Total=1122 [2024-10-12 18:34:40,270 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 34 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 33 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 18:34:40,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:40,381 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2024-10-12 18:34:40,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-12 18:34:40,382 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 33 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 38 [2024-10-12 18:34:40,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:40,382 INFO L225 Difference]: With dead ends: 118 [2024-10-12 18:34:40,382 INFO L226 Difference]: Without dead ends: 90 [2024-10-12 18:34:40,383 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 46 SyntacticMatches, 16 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 627 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=234, Invalid=956, Unknown=0, NotChecked=0, Total=1190 [2024-10-12 18:34:40,383 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 9 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:40,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 109 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:40,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-10-12 18:34:40,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 56. [2024-10-12 18:34:40,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.2) internal successors, (66), 55 states have internal predecessors, (66), 0 states have call successors, (0), 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 18:34:40,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2024-10-12 18:34:40,403 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 38 [2024-10-12 18:34:40,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:40,403 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2024-10-12 18:34:40,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 33 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 18:34:40,403 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2024-10-12 18:34:40,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-12 18:34:40,403 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:40,403 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:40,419 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-10-12 18:34:40,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:40,604 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:40,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:40,604 INFO L85 PathProgramCache]: Analyzing trace with hash 459889103, now seen corresponding path program 14 times [2024-10-12 18:34:40,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:40,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408526569] [2024-10-12 18:34:40,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:40,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:40,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:40,730 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 28 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:40,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:40,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408526569] [2024-10-12 18:34:40,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408526569] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:40,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283453913] [2024-10-12 18:34:40,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 18:34:40,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:40,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:40,733 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:40,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-10-12 18:34:40,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 18:34:40,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:40,795 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-12 18:34:40,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:40,837 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 36 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:40,837 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:40,949 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 36 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:40,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283453913] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:40,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:40,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2024-10-12 18:34:40,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602529378] [2024-10-12 18:34:40,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:40,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-12 18:34:40,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:40,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-12 18:34:40,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2024-10-12 18:34:40,950 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 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 18:34:41,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:41,070 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2024-10-12 18:34:41,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-12 18:34:41,070 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 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 39 [2024-10-12 18:34:41,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:41,071 INFO L225 Difference]: With dead ends: 67 [2024-10-12 18:34:41,071 INFO L226 Difference]: Without dead ends: 65 [2024-10-12 18:34:41,071 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 65 SyntacticMatches, 17 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=295, Unknown=0, NotChecked=0, Total=462 [2024-10-12 18:34:41,072 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 22 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:41,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 109 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:41,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-10-12 18:34:41,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2024-10-12 18:34:41,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.1896551724137931) internal successors, (69), 58 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:34:41,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2024-10-12 18:34:41,090 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 39 [2024-10-12 18:34:41,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:41,090 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2024-10-12 18:34:41,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 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 18:34:41,091 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2024-10-12 18:34:41,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-12 18:34:41,091 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:41,091 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:41,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-10-12 18:34:41,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-10-12 18:34:41,292 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:41,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:41,292 INFO L85 PathProgramCache]: Analyzing trace with hash -384563647, now seen corresponding path program 15 times [2024-10-12 18:34:41,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:41,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526688642] [2024-10-12 18:34:41,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:41,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:41,592 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 78 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:41,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:41,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526688642] [2024-10-12 18:34:41,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526688642] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:41,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807099943] [2024-10-12 18:34:41,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 18:34:41,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:41,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:41,595 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:41,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-10-12 18:34:41,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-10-12 18:34:41,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:41,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-12 18:34:41,672 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:42,113 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 100 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:42,113 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:42,299 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 100 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:42,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807099943] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:42,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:42,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 44 [2024-10-12 18:34:42,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191737522] [2024-10-12 18:34:42,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:42,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-10-12 18:34:42,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:42,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-10-12 18:34:42,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=1599, Unknown=0, NotChecked=0, Total=1980 [2024-10-12 18:34:42,300 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 44 states have internal predecessors, (88), 0 states have call successors, (0), 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 18:34:42,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:42,461 INFO L93 Difference]: Finished difference Result 128 states and 140 transitions. [2024-10-12 18:34:42,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-12 18:34:42,462 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 44 states have internal predecessors, (88), 0 states have call successors, (0), 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 42 [2024-10-12 18:34:42,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:42,462 INFO L225 Difference]: With dead ends: 128 [2024-10-12 18:34:42,462 INFO L226 Difference]: Without dead ends: 97 [2024-10-12 18:34:42,463 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 43 SyntacticMatches, 18 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1473 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=389, Invalid=1681, Unknown=0, NotChecked=0, Total=2070 [2024-10-12 18:34:42,463 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 9 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:42,463 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 214 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:42,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-10-12 18:34:42,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 60. [2024-10-12 18:34:42,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.1864406779661016) internal successors, (70), 59 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 18:34:42,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2024-10-12 18:34:42,482 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 42 [2024-10-12 18:34:42,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:42,483 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2024-10-12 18:34:42,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 44 states have internal predecessors, (88), 0 states have call successors, (0), 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 18:34:42,483 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2024-10-12 18:34:42,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-12 18:34:42,483 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:42,483 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:42,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-10-12 18:34:42,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-10-12 18:34:42,684 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:42,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:42,685 INFO L85 PathProgramCache]: Analyzing trace with hash -2109744768, now seen corresponding path program 22 times [2024-10-12 18:34:42,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:42,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486143311] [2024-10-12 18:34:42,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:42,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:42,971 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 78 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:42,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:42,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486143311] [2024-10-12 18:34:42,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486143311] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:42,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014126573] [2024-10-12 18:34:42,971 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-12 18:34:42,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:42,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:42,973 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:42,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-10-12 18:34:43,048 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-12 18:34:43,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:43,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-12 18:34:43,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:43,440 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 100 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:43,440 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:43,630 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 100 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:43,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014126573] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:43,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:43,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 43 [2024-10-12 18:34:43,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881126447] [2024-10-12 18:34:43,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:43,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-10-12 18:34:43,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:43,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-10-12 18:34:43,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=1539, Unknown=0, NotChecked=0, Total=1892 [2024-10-12 18:34:43,631 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand has 44 states, 44 states have (on average 1.9772727272727273) internal successors, (87), 43 states have internal predecessors, (87), 0 states have call successors, (0), 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 18:34:43,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:43,776 INFO L93 Difference]: Finished difference Result 135 states and 147 transitions. [2024-10-12 18:34:43,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-12 18:34:43,777 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.9772727272727273) internal successors, (87), 43 states have internal predecessors, (87), 0 states have call successors, (0), 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 42 [2024-10-12 18:34:43,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:43,778 INFO L225 Difference]: With dead ends: 135 [2024-10-12 18:34:43,778 INFO L226 Difference]: Without dead ends: 104 [2024-10-12 18:34:43,778 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 44 SyntacticMatches, 18 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1404 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=361, Invalid=1619, Unknown=0, NotChecked=0, Total=1980 [2024-10-12 18:34:43,779 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 9 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:43,779 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 121 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:43,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-10-12 18:34:43,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 60. [2024-10-12 18:34:43,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.1864406779661016) internal successors, (70), 59 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 18:34:43,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2024-10-12 18:34:43,806 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 42 [2024-10-12 18:34:43,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:43,807 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2024-10-12 18:34:43,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.9772727272727273) internal successors, (87), 43 states have internal predecessors, (87), 0 states have call successors, (0), 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 18:34:43,807 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2024-10-12 18:34:43,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-12 18:34:43,807 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:43,807 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:43,824 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-10-12 18:34:44,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-10-12 18:34:44,008 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:44,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:44,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1195564447, now seen corresponding path program 23 times [2024-10-12 18:34:44,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:44,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554369269] [2024-10-12 18:34:44,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:44,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:44,260 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 78 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:44,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:44,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554369269] [2024-10-12 18:34:44,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554369269] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:44,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882438265] [2024-10-12 18:34:44,261 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-12 18:34:44,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:44,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:44,262 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:44,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-10-12 18:34:44,328 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-10-12 18:34:44,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:44,329 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-12 18:34:44,329 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:44,695 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 100 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:44,695 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:44,880 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 100 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:44,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882438265] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:44,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:44,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 42 [2024-10-12 18:34:44,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048237479] [2024-10-12 18:34:44,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:44,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-10-12 18:34:44,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:44,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-10-12 18:34:44,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=1477, Unknown=0, NotChecked=0, Total=1806 [2024-10-12 18:34:44,882 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand has 43 states, 43 states have (on average 2.0) internal successors, (86), 42 states have internal predecessors, (86), 0 states have call successors, (0), 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 18:34:45,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:45,093 INFO L93 Difference]: Finished difference Result 140 states and 152 transitions. [2024-10-12 18:34:45,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-12 18:34:45,094 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.0) internal successors, (86), 42 states have internal predecessors, (86), 0 states have call successors, (0), 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 42 [2024-10-12 18:34:45,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:45,094 INFO L225 Difference]: With dead ends: 140 [2024-10-12 18:34:45,094 INFO L226 Difference]: Without dead ends: 109 [2024-10-12 18:34:45,095 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 45 SyntacticMatches, 18 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1304 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=337, Invalid=1555, Unknown=0, NotChecked=0, Total=1892 [2024-10-12 18:34:45,095 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 9 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:45,095 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 170 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:45,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-10-12 18:34:45,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 60. [2024-10-12 18:34:45,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.1864406779661016) internal successors, (70), 59 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 18:34:45,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2024-10-12 18:34:45,121 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 42 [2024-10-12 18:34:45,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:45,122 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2024-10-12 18:34:45,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.0) internal successors, (86), 42 states have internal predecessors, (86), 0 states have call successors, (0), 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 18:34:45,122 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2024-10-12 18:34:45,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-12 18:34:45,122 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:45,122 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:45,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2024-10-12 18:34:45,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:45,323 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:45,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:45,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1997358752, now seen corresponding path program 24 times [2024-10-12 18:34:45,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:45,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455303257] [2024-10-12 18:34:45,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:45,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:45,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:45,580 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 78 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:45,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:45,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455303257] [2024-10-12 18:34:45,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455303257] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:45,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103923738] [2024-10-12 18:34:45,580 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-12 18:34:45,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:45,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:45,582 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:45,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-10-12 18:34:45,661 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-10-12 18:34:45,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:45,662 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-12 18:34:45,663 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:46,114 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 100 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:46,114 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:46,297 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 100 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:46,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103923738] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:46,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:46,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 41 [2024-10-12 18:34:46,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795063171] [2024-10-12 18:34:46,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:46,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-10-12 18:34:46,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:46,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-10-12 18:34:46,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=1413, Unknown=0, NotChecked=0, Total=1722 [2024-10-12 18:34:46,298 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand has 42 states, 42 states have (on average 2.0238095238095237) internal successors, (85), 41 states have internal predecessors, (85), 0 states have call successors, (0), 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 18:34:46,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:46,475 INFO L93 Difference]: Finished difference Result 143 states and 155 transitions. [2024-10-12 18:34:46,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-12 18:34:46,476 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.0238095238095237) internal successors, (85), 41 states have internal predecessors, (85), 0 states have call successors, (0), 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 42 [2024-10-12 18:34:46,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:46,476 INFO L225 Difference]: With dead ends: 143 [2024-10-12 18:34:46,477 INFO L226 Difference]: Without dead ends: 112 [2024-10-12 18:34:46,477 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 46 SyntacticMatches, 18 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1207 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=317, Invalid=1489, Unknown=0, NotChecked=0, Total=1806 [2024-10-12 18:34:46,477 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 9 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:46,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 186 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:46,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-10-12 18:34:46,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 60. [2024-10-12 18:34:46,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.1864406779661016) internal successors, (70), 59 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 18:34:46,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2024-10-12 18:34:46,506 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 42 [2024-10-12 18:34:46,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:46,506 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2024-10-12 18:34:46,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.0238095238095237) internal successors, (85), 41 states have internal predecessors, (85), 0 states have call successors, (0), 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 18:34:46,506 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2024-10-12 18:34:46,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-12 18:34:46,506 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:46,506 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:46,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2024-10-12 18:34:46,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-10-12 18:34:46,707 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:46,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:46,707 INFO L85 PathProgramCache]: Analyzing trace with hash -499202431, now seen corresponding path program 25 times [2024-10-12 18:34:46,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:46,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151114863] [2024-10-12 18:34:46,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:46,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:46,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:46,968 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 78 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:46,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:46,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151114863] [2024-10-12 18:34:46,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151114863] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:46,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403108794] [2024-10-12 18:34:46,969 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-12 18:34:46,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:46,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:46,971 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:46,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-10-12 18:34:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:47,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-12 18:34:47,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:47,413 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 100 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:47,413 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:47,609 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 100 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:47,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403108794] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:47,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:47,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 40 [2024-10-12 18:34:47,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950516641] [2024-10-12 18:34:47,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:47,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-10-12 18:34:47,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:47,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-10-12 18:34:47,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=1347, Unknown=0, NotChecked=0, Total=1640 [2024-10-12 18:34:47,610 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand has 41 states, 41 states have (on average 2.048780487804878) internal successors, (84), 40 states have internal predecessors, (84), 0 states have call successors, (0), 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 18:34:47,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:47,788 INFO L93 Difference]: Finished difference Result 144 states and 156 transitions. [2024-10-12 18:34:47,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-12 18:34:47,789 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.048780487804878) internal successors, (84), 40 states have internal predecessors, (84), 0 states have call successors, (0), 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 42 [2024-10-12 18:34:47,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:47,789 INFO L225 Difference]: With dead ends: 144 [2024-10-12 18:34:47,789 INFO L226 Difference]: Without dead ends: 113 [2024-10-12 18:34:47,790 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 47 SyntacticMatches, 18 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1113 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=301, Invalid=1421, Unknown=0, NotChecked=0, Total=1722 [2024-10-12 18:34:47,790 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 9 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:47,790 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 161 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:47,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-10-12 18:34:47,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 60. [2024-10-12 18:34:47,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.1864406779661016) internal successors, (70), 59 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 18:34:47,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2024-10-12 18:34:47,818 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 42 [2024-10-12 18:34:47,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:47,819 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2024-10-12 18:34:47,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.048780487804878) internal successors, (84), 40 states have internal predecessors, (84), 0 states have call successors, (0), 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 18:34:47,819 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2024-10-12 18:34:47,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-12 18:34:47,819 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:47,819 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:47,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-10-12 18:34:48,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-10-12 18:34:48,020 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:48,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:48,020 INFO L85 PathProgramCache]: Analyzing trace with hash -727969472, now seen corresponding path program 26 times [2024-10-12 18:34:48,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:48,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304368193] [2024-10-12 18:34:48,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:48,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:48,240 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 78 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:48,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:48,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304368193] [2024-10-12 18:34:48,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304368193] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:48,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155821015] [2024-10-12 18:34:48,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 18:34:48,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:48,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:48,242 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:48,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-10-12 18:34:48,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 18:34:48,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:48,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-12 18:34:48,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:48,646 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 100 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:48,646 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:48,840 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 100 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:48,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155821015] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:48,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:48,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 39 [2024-10-12 18:34:48,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612187620] [2024-10-12 18:34:48,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:48,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-10-12 18:34:48,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:48,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-10-12 18:34:48,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=1279, Unknown=0, NotChecked=0, Total=1560 [2024-10-12 18:34:48,842 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand has 40 states, 40 states have (on average 2.075) internal successors, (83), 39 states have internal predecessors, (83), 0 states have call successors, (0), 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 18:34:49,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:49,017 INFO L93 Difference]: Finished difference Result 143 states and 155 transitions. [2024-10-12 18:34:49,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-12 18:34:49,017 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.075) internal successors, (83), 39 states have internal predecessors, (83), 0 states have call successors, (0), 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 42 [2024-10-12 18:34:49,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:49,018 INFO L225 Difference]: With dead ends: 143 [2024-10-12 18:34:49,018 INFO L226 Difference]: Without dead ends: 112 [2024-10-12 18:34:49,018 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 48 SyntacticMatches, 18 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=289, Invalid=1351, Unknown=0, NotChecked=0, Total=1640 [2024-10-12 18:34:49,019 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 9 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:49,019 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 161 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:49,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-10-12 18:34:49,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 60. [2024-10-12 18:34:49,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.1864406779661016) internal successors, (70), 59 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 18:34:49,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2024-10-12 18:34:49,046 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 42 [2024-10-12 18:34:49,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:49,046 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2024-10-12 18:34:49,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.075) internal successors, (83), 39 states have internal predecessors, (83), 0 states have call successors, (0), 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 18:34:49,047 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2024-10-12 18:34:49,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-12 18:34:49,047 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:49,047 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:49,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-10-12 18:34:49,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-10-12 18:34:49,252 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:49,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:49,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1843727711, now seen corresponding path program 27 times [2024-10-12 18:34:49,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:49,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439920098] [2024-10-12 18:34:49,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:49,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:49,455 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 78 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:49,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:49,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439920098] [2024-10-12 18:34:49,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439920098] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:49,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915028218] [2024-10-12 18:34:49,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 18:34:49,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:49,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:49,456 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:49,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-10-12 18:34:49,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-10-12 18:34:49,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:49,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-12 18:34:49,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:49,853 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 100 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:49,854 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:50,031 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 100 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:50,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915028218] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:50,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:50,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 38 [2024-10-12 18:34:50,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480378021] [2024-10-12 18:34:50,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:50,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-10-12 18:34:50,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:50,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-10-12 18:34:50,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=1209, Unknown=0, NotChecked=0, Total=1482 [2024-10-12 18:34:50,033 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand has 39 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 38 states have internal predecessors, (82), 0 states have call successors, (0), 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 18:34:50,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:50,216 INFO L93 Difference]: Finished difference Result 140 states and 152 transitions. [2024-10-12 18:34:50,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-12 18:34:50,216 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 38 states have internal predecessors, (82), 0 states have call successors, (0), 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 42 [2024-10-12 18:34:50,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:50,217 INFO L225 Difference]: With dead ends: 140 [2024-10-12 18:34:50,217 INFO L226 Difference]: Without dead ends: 109 [2024-10-12 18:34:50,218 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 49 SyntacticMatches, 18 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 934 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=281, Invalid=1279, Unknown=0, NotChecked=0, Total=1560 [2024-10-12 18:34:50,218 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 9 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:50,218 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 155 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:50,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-10-12 18:34:50,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 60. [2024-10-12 18:34:50,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.1864406779661016) internal successors, (70), 59 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 18:34:50,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2024-10-12 18:34:50,253 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 42 [2024-10-12 18:34:50,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:50,254 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2024-10-12 18:34:50,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 38 states have internal predecessors, (82), 0 states have call successors, (0), 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 18:34:50,254 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2024-10-12 18:34:50,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-12 18:34:50,254 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:50,255 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:50,272 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-10-12 18:34:50,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2024-10-12 18:34:50,456 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:50,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:50,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1602625248, now seen corresponding path program 28 times [2024-10-12 18:34:50,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:50,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388815368] [2024-10-12 18:34:50,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:50,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:50,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:50,726 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 78 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:50,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:50,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388815368] [2024-10-12 18:34:50,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388815368] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:50,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065171659] [2024-10-12 18:34:50,727 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-12 18:34:50,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:50,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:50,729 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:50,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-10-12 18:34:50,795 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-12 18:34:50,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:50,796 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-12 18:34:50,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:51,092 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 100 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:51,092 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:51,280 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 100 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:51,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065171659] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:51,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:51,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 37 [2024-10-12 18:34:51,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329464108] [2024-10-12 18:34:51,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:51,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-10-12 18:34:51,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:51,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-10-12 18:34:51,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=1137, Unknown=0, NotChecked=0, Total=1406 [2024-10-12 18:34:51,282 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand has 38 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 37 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 18:34:51,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:51,459 INFO L93 Difference]: Finished difference Result 135 states and 147 transitions. [2024-10-12 18:34:51,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-12 18:34:51,460 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 37 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 42 [2024-10-12 18:34:51,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:51,460 INFO L225 Difference]: With dead ends: 135 [2024-10-12 18:34:51,460 INFO L226 Difference]: Without dead ends: 104 [2024-10-12 18:34:51,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 50 SyntacticMatches, 18 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 849 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=277, Invalid=1205, Unknown=0, NotChecked=0, Total=1482 [2024-10-12 18:34:51,461 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 9 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:51,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 185 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:51,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-10-12 18:34:51,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 60. [2024-10-12 18:34:51,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.1864406779661016) internal successors, (70), 59 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 18:34:51,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2024-10-12 18:34:51,483 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 42 [2024-10-12 18:34:51,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:51,483 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2024-10-12 18:34:51,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 37 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 18:34:51,483 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2024-10-12 18:34:51,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-12 18:34:51,484 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:51,484 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:51,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2024-10-12 18:34:51,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:51,684 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:51,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:51,685 INFO L85 PathProgramCache]: Analyzing trace with hash 760456897, now seen corresponding path program 8 times [2024-10-12 18:34:51,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:51,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058875673] [2024-10-12 18:34:51,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:51,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:51,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:51,894 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 78 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:51,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:51,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058875673] [2024-10-12 18:34:51,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058875673] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:51,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659946018] [2024-10-12 18:34:51,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 18:34:51,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:51,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:51,895 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:51,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-10-12 18:34:51,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 18:34:51,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:51,963 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-12 18:34:51,964 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:52,248 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 100 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:52,249 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:52,443 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 100 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:52,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659946018] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:52,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:52,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 36 [2024-10-12 18:34:52,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692100816] [2024-10-12 18:34:52,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:52,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-10-12 18:34:52,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:52,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-10-12 18:34:52,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=1063, Unknown=0, NotChecked=0, Total=1332 [2024-10-12 18:34:52,445 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand has 37 states, 37 states have (on average 2.1621621621621623) internal successors, (80), 36 states have internal predecessors, (80), 0 states have call successors, (0), 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 18:34:52,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:52,598 INFO L93 Difference]: Finished difference Result 131 states and 144 transitions. [2024-10-12 18:34:52,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-12 18:34:52,598 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.1621621621621623) internal successors, (80), 36 states have internal predecessors, (80), 0 states have call successors, (0), 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 42 [2024-10-12 18:34:52,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:52,599 INFO L225 Difference]: With dead ends: 131 [2024-10-12 18:34:52,599 INFO L226 Difference]: Without dead ends: 100 [2024-10-12 18:34:52,599 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 51 SyntacticMatches, 18 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=277, Invalid=1129, Unknown=0, NotChecked=0, Total=1406 [2024-10-12 18:34:52,600 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 9 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:52,600 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 144 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:52,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-10-12 18:34:52,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 62. [2024-10-12 18:34:52,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.1967213114754098) internal successors, (73), 61 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 18:34:52,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2024-10-12 18:34:52,628 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 42 [2024-10-12 18:34:52,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:52,628 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2024-10-12 18:34:52,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.1621621621621623) internal successors, (80), 36 states have internal predecessors, (80), 0 states have call successors, (0), 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 18:34:52,628 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2024-10-12 18:34:52,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-12 18:34:52,628 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:52,629 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:52,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-10-12 18:34:52,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2024-10-12 18:34:52,829 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:52,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:52,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1267624077, now seen corresponding path program 16 times [2024-10-12 18:34:52,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:52,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084001702] [2024-10-12 18:34:52,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:52,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:52,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:52,945 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 36 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:52,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:52,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084001702] [2024-10-12 18:34:52,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084001702] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:52,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901249941] [2024-10-12 18:34:52,945 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-12 18:34:52,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:52,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:52,946 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:52,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-10-12 18:34:53,017 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-12 18:34:53,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:53,018 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-12 18:34:53,019 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:53,067 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 45 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:53,067 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:53,186 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 45 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:53,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901249941] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:53,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:53,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 14 [2024-10-12 18:34:53,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999344395] [2024-10-12 18:34:53,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:53,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-12 18:34:53,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:53,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-12 18:34:53,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2024-10-12 18:34:53,188 INFO L87 Difference]: Start difference. First operand 62 states and 73 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 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 18:34:53,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:53,337 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2024-10-12 18:34:53,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-12 18:34:53,337 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 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 43 [2024-10-12 18:34:53,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:53,338 INFO L225 Difference]: With dead ends: 73 [2024-10-12 18:34:53,338 INFO L226 Difference]: Without dead ends: 71 [2024-10-12 18:34:53,338 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 73 SyntacticMatches, 18 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=352, Unknown=0, NotChecked=0, Total=552 [2024-10-12 18:34:53,338 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 24 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:53,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 154 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:53,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-10-12 18:34:53,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2024-10-12 18:34:53,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.1875) internal successors, (76), 64 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 18:34:53,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 76 transitions. [2024-10-12 18:34:53,372 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 76 transitions. Word has length 43 [2024-10-12 18:34:53,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:53,372 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 76 transitions. [2024-10-12 18:34:53,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 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 18:34:53,372 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 76 transitions. [2024-10-12 18:34:53,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-12 18:34:53,373 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:53,373 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:53,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2024-10-12 18:34:53,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:53,573 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:53,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:53,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1863398941, now seen corresponding path program 17 times [2024-10-12 18:34:53,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:53,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241080417] [2024-10-12 18:34:53,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:53,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:53,866 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 101 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:53,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:53,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241080417] [2024-10-12 18:34:53,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241080417] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:53,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780005195] [2024-10-12 18:34:53,867 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-12 18:34:53,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:53,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:53,868 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:53,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-10-12 18:34:53,941 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-10-12 18:34:53,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:53,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-12 18:34:53,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:54,400 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 126 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:54,400 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:54,614 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 126 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:54,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780005195] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:54,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:54,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2024-10-12 18:34:54,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678983570] [2024-10-12 18:34:54,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:54,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-10-12 18:34:54,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:54,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-10-12 18:34:54,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=451, Invalid=1901, Unknown=0, NotChecked=0, Total=2352 [2024-10-12 18:34:54,616 INFO L87 Difference]: Start difference. First operand 65 states and 76 transitions. Second operand has 49 states, 49 states have (on average 1.9591836734693877) internal successors, (96), 48 states have internal predecessors, (96), 0 states have call successors, (0), 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 18:34:54,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:54,815 INFO L93 Difference]: Finished difference Result 141 states and 154 transitions. [2024-10-12 18:34:54,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-12 18:34:54,815 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.9591836734693877) internal successors, (96), 48 states have internal predecessors, (96), 0 states have call successors, (0), 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 46 [2024-10-12 18:34:54,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:54,816 INFO L225 Difference]: With dead ends: 141 [2024-10-12 18:34:54,816 INFO L226 Difference]: Without dead ends: 107 [2024-10-12 18:34:54,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 47 SyntacticMatches, 20 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1793 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=459, Invalid=1991, Unknown=0, NotChecked=0, Total=2450 [2024-10-12 18:34:54,816 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:54,817 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 235 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:54,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-10-12 18:34:54,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 66. [2024-10-12 18:34:54,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 65 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 18:34:54,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2024-10-12 18:34:54,841 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 46 [2024-10-12 18:34:54,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:54,841 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2024-10-12 18:34:54,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.9591836734693877) internal successors, (96), 48 states have internal predecessors, (96), 0 states have call successors, (0), 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 18:34:54,842 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2024-10-12 18:34:54,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-12 18:34:54,842 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:54,842 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:54,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-10-12 18:34:55,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:55,043 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:55,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:55,043 INFO L85 PathProgramCache]: Analyzing trace with hash 462639580, now seen corresponding path program 29 times [2024-10-12 18:34:55,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:55,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892145399] [2024-10-12 18:34:55,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:55,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:55,293 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 101 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:55,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:55,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892145399] [2024-10-12 18:34:55,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892145399] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:55,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742417591] [2024-10-12 18:34:55,294 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-12 18:34:55,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:55,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:55,295 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:55,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-10-12 18:34:55,369 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-10-12 18:34:55,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:55,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-12 18:34:55,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:55,811 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 126 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:55,811 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:56,044 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 126 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:56,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742417591] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:56,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:56,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2024-10-12 18:34:56,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508897341] [2024-10-12 18:34:56,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:56,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-10-12 18:34:56,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:56,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-10-12 18:34:56,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=1836, Unknown=0, NotChecked=0, Total=2256 [2024-10-12 18:34:56,045 INFO L87 Difference]: Start difference. First operand 66 states and 77 transitions. Second operand has 48 states, 48 states have (on average 1.9791666666666667) internal successors, (95), 47 states have internal predecessors, (95), 0 states have call successors, (0), 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 18:34:56,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:56,236 INFO L93 Difference]: Finished difference Result 149 states and 162 transitions. [2024-10-12 18:34:56,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-12 18:34:56,236 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.9791666666666667) internal successors, (95), 47 states have internal predecessors, (95), 0 states have call successors, (0), 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 46 [2024-10-12 18:34:56,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:56,237 INFO L225 Difference]: With dead ends: 149 [2024-10-12 18:34:56,237 INFO L226 Difference]: Without dead ends: 115 [2024-10-12 18:34:56,237 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 48 SyntacticMatches, 20 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1717 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=428, Invalid=1924, Unknown=0, NotChecked=0, Total=2352 [2024-10-12 18:34:56,237 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:56,238 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 183 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:56,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-10-12 18:34:56,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 66. [2024-10-12 18:34:56,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 65 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 18:34:56,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2024-10-12 18:34:56,273 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 46 [2024-10-12 18:34:56,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:56,273 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2024-10-12 18:34:56,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.9791666666666667) internal successors, (95), 47 states have internal predecessors, (95), 0 states have call successors, (0), 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 18:34:56,274 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2024-10-12 18:34:56,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-12 18:34:56,274 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:56,274 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:56,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2024-10-12 18:34:56,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:56,475 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:56,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:56,475 INFO L85 PathProgramCache]: Analyzing trace with hash -829472195, now seen corresponding path program 30 times [2024-10-12 18:34:56,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:56,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383853760] [2024-10-12 18:34:56,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:56,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:56,714 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 101 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:56,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:56,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383853760] [2024-10-12 18:34:56,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383853760] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:56,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47385736] [2024-10-12 18:34:56,714 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-12 18:34:56,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:56,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:56,716 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:56,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-10-12 18:34:56,789 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-10-12 18:34:56,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:56,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-12 18:34:56,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:57,209 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 126 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:57,209 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:57,421 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 126 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:57,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47385736] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:57,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:57,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 46 [2024-10-12 18:34:57,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966853662] [2024-10-12 18:34:57,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:57,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-10-12 18:34:57,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:57,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-10-12 18:34:57,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=393, Invalid=1769, Unknown=0, NotChecked=0, Total=2162 [2024-10-12 18:34:57,422 INFO L87 Difference]: Start difference. First operand 66 states and 77 transitions. Second operand has 47 states, 47 states have (on average 2.0) internal successors, (94), 46 states have internal predecessors, (94), 0 states have call successors, (0), 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 18:34:57,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:57,641 INFO L93 Difference]: Finished difference Result 155 states and 168 transitions. [2024-10-12 18:34:57,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-12 18:34:57,642 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.0) internal successors, (94), 46 states have internal predecessors, (94), 0 states have call successors, (0), 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 46 [2024-10-12 18:34:57,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:57,642 INFO L225 Difference]: With dead ends: 155 [2024-10-12 18:34:57,642 INFO L226 Difference]: Without dead ends: 121 [2024-10-12 18:34:57,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 49 SyntacticMatches, 20 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1606 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=401, Invalid=1855, Unknown=0, NotChecked=0, Total=2256 [2024-10-12 18:34:57,643 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:57,643 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 210 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:57,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-10-12 18:34:57,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 66. [2024-10-12 18:34:57,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 65 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 18:34:57,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2024-10-12 18:34:57,675 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 46 [2024-10-12 18:34:57,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:57,675 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2024-10-12 18:34:57,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.0) internal successors, (94), 46 states have internal predecessors, (94), 0 states have call successors, (0), 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 18:34:57,675 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2024-10-12 18:34:57,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-12 18:34:57,675 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:57,675 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:57,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2024-10-12 18:34:57,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:57,876 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:57,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:57,876 INFO L85 PathProgramCache]: Analyzing trace with hash -871153220, now seen corresponding path program 31 times [2024-10-12 18:34:57,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:57,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808998222] [2024-10-12 18:34:57,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:57,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:57,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:58,118 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 101 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:58,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:58,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808998222] [2024-10-12 18:34:58,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808998222] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:58,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378097540] [2024-10-12 18:34:58,118 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-12 18:34:58,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:58,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:58,120 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:58,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-10-12 18:34:58,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:58,193 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-12 18:34:58,194 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:34:58,669 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 126 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:58,669 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:34:58,897 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 126 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:58,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378097540] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:34:58,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:34:58,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 45 [2024-10-12 18:34:58,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669703517] [2024-10-12 18:34:58,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:34:58,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-10-12 18:34:58,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:34:58,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-10-12 18:34:58,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=1700, Unknown=0, NotChecked=0, Total=2070 [2024-10-12 18:34:58,899 INFO L87 Difference]: Start difference. First operand 66 states and 77 transitions. Second operand has 46 states, 46 states have (on average 2.0217391304347827) internal successors, (93), 45 states have internal predecessors, (93), 0 states have call successors, (0), 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 18:34:59,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:34:59,117 INFO L93 Difference]: Finished difference Result 159 states and 172 transitions. [2024-10-12 18:34:59,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-12 18:34:59,118 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.0217391304347827) internal successors, (93), 45 states have internal predecessors, (93), 0 states have call successors, (0), 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 46 [2024-10-12 18:34:59,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:34:59,118 INFO L225 Difference]: With dead ends: 159 [2024-10-12 18:34:59,118 INFO L226 Difference]: Without dead ends: 125 [2024-10-12 18:34:59,119 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 50 SyntacticMatches, 20 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1498 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=378, Invalid=1784, Unknown=0, NotChecked=0, Total=2162 [2024-10-12 18:34:59,119 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:34:59,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 158 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:34:59,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-10-12 18:34:59,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 66. [2024-10-12 18:34:59,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 65 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 18:34:59,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2024-10-12 18:34:59,158 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 46 [2024-10-12 18:34:59,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:34:59,158 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2024-10-12 18:34:59,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.0217391304347827) internal successors, (93), 45 states have internal predecessors, (93), 0 states have call successors, (0), 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 18:34:59,159 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2024-10-12 18:34:59,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-12 18:34:59,159 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:34:59,159 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:34:59,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2024-10-12 18:34:59,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-10-12 18:34:59,359 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:34:59,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:34:59,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1482806877, now seen corresponding path program 32 times [2024-10-12 18:34:59,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:34:59,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756619598] [2024-10-12 18:34:59,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:34:59,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:34:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:34:59,590 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 101 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:34:59,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:34:59,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756619598] [2024-10-12 18:34:59,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756619598] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:34:59,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409658880] [2024-10-12 18:34:59,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 18:34:59,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:34:59,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:34:59,591 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:34:59,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-10-12 18:34:59,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 18:34:59,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:34:59,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-12 18:34:59,674 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:35:00,073 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 126 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:00,074 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:35:00,279 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 126 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:00,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409658880] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:35:00,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:35:00,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 44 [2024-10-12 18:35:00,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103525727] [2024-10-12 18:35:00,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:35:00,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-10-12 18:35:00,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:00,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-10-12 18:35:00,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=1629, Unknown=0, NotChecked=0, Total=1980 [2024-10-12 18:35:00,281 INFO L87 Difference]: Start difference. First operand 66 states and 77 transitions. Second operand has 45 states, 45 states have (on average 2.0444444444444443) internal successors, (92), 44 states have internal predecessors, (92), 0 states have call successors, (0), 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 18:35:00,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:00,525 INFO L93 Difference]: Finished difference Result 161 states and 174 transitions. [2024-10-12 18:35:00,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-12 18:35:00,525 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.0444444444444443) internal successors, (92), 44 states have internal predecessors, (92), 0 states have call successors, (0), 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 46 [2024-10-12 18:35:00,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:00,526 INFO L225 Difference]: With dead ends: 161 [2024-10-12 18:35:00,526 INFO L226 Difference]: Without dead ends: 127 [2024-10-12 18:35:00,526 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 51 SyntacticMatches, 20 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1393 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=359, Invalid=1711, Unknown=0, NotChecked=0, Total=2070 [2024-10-12 18:35:00,526 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:35:00,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 208 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:35:00,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-10-12 18:35:00,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 66. [2024-10-12 18:35:00,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 65 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 18:35:00,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2024-10-12 18:35:00,569 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 46 [2024-10-12 18:35:00,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:00,569 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2024-10-12 18:35:00,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.0444444444444443) internal successors, (92), 44 states have internal predecessors, (92), 0 states have call successors, (0), 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 18:35:00,570 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2024-10-12 18:35:00,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-12 18:35:00,570 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:00,570 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:00,588 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2024-10-12 18:35:00,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-10-12 18:35:00,775 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:00,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:00,775 INFO L85 PathProgramCache]: Analyzing trace with hash -242374244, now seen corresponding path program 33 times [2024-10-12 18:35:00,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:00,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221252469] [2024-10-12 18:35:00,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:00,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:01,024 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 101 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:01,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:01,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221252469] [2024-10-12 18:35:01,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221252469] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:35:01,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766792594] [2024-10-12 18:35:01,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 18:35:01,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:01,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:35:01,025 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:35:01,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-10-12 18:35:01,108 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-10-12 18:35:01,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:35:01,109 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-12 18:35:01,109 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:35:01,479 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 126 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:01,479 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:35:01,680 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 126 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:01,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766792594] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:35:01,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:35:01,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 43 [2024-10-12 18:35:01,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7596530] [2024-10-12 18:35:01,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:35:01,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-10-12 18:35:01,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:01,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-10-12 18:35:01,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=1556, Unknown=0, NotChecked=0, Total=1892 [2024-10-12 18:35:01,682 INFO L87 Difference]: Start difference. First operand 66 states and 77 transitions. Second operand has 44 states, 44 states have (on average 2.0681818181818183) internal successors, (91), 43 states have internal predecessors, (91), 0 states have call successors, (0), 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 18:35:01,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:01,952 INFO L93 Difference]: Finished difference Result 161 states and 174 transitions. [2024-10-12 18:35:01,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-12 18:35:01,953 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.0681818181818183) internal successors, (91), 43 states have internal predecessors, (91), 0 states have call successors, (0), 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 46 [2024-10-12 18:35:01,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:01,953 INFO L225 Difference]: With dead ends: 161 [2024-10-12 18:35:01,953 INFO L226 Difference]: Without dead ends: 127 [2024-10-12 18:35:01,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 52 SyntacticMatches, 20 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1291 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=344, Invalid=1636, Unknown=0, NotChecked=0, Total=1980 [2024-10-12 18:35:01,954 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:35:01,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 271 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:35:01,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-10-12 18:35:01,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 66. [2024-10-12 18:35:01,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 65 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 18:35:01,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2024-10-12 18:35:01,997 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 46 [2024-10-12 18:35:01,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:01,997 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2024-10-12 18:35:01,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.0681818181818183) internal successors, (91), 43 states have internal predecessors, (91), 0 states have call successors, (0), 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 18:35:01,998 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2024-10-12 18:35:01,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-12 18:35:01,998 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:01,998 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:02,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2024-10-12 18:35:02,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-10-12 18:35:02,198 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:02,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:02,199 INFO L85 PathProgramCache]: Analyzing trace with hash 671806077, now seen corresponding path program 34 times [2024-10-12 18:35:02,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:02,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607451095] [2024-10-12 18:35:02,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:02,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:02,486 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 101 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:02,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:02,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607451095] [2024-10-12 18:35:02,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607451095] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:35:02,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491141253] [2024-10-12 18:35:02,486 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-12 18:35:02,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:02,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:35:02,487 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:35:02,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-10-12 18:35:02,562 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-12 18:35:02,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:35:02,563 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-12 18:35:02,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:35:02,926 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 126 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:02,926 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:35:03,140 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 126 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:03,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491141253] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:35:03,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:35:03,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 42 [2024-10-12 18:35:03,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417528180] [2024-10-12 18:35:03,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:35:03,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-10-12 18:35:03,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:03,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-10-12 18:35:03,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=1481, Unknown=0, NotChecked=0, Total=1806 [2024-10-12 18:35:03,142 INFO L87 Difference]: Start difference. First operand 66 states and 77 transitions. Second operand has 43 states, 43 states have (on average 2.0930232558139537) internal successors, (90), 42 states have internal predecessors, (90), 0 states have call successors, (0), 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 18:35:03,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:03,359 INFO L93 Difference]: Finished difference Result 159 states and 172 transitions. [2024-10-12 18:35:03,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-12 18:35:03,360 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.0930232558139537) internal successors, (90), 42 states have internal predecessors, (90), 0 states have call successors, (0), 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 46 [2024-10-12 18:35:03,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:03,360 INFO L225 Difference]: With dead ends: 159 [2024-10-12 18:35:03,360 INFO L226 Difference]: Without dead ends: 125 [2024-10-12 18:35:03,361 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 53 SyntacticMatches, 20 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1192 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=333, Invalid=1559, Unknown=0, NotChecked=0, Total=1892 [2024-10-12 18:35:03,361 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:35:03,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 146 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:35:03,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-10-12 18:35:03,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 66. [2024-10-12 18:35:03,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 65 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 18:35:03,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2024-10-12 18:35:03,392 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 46 [2024-10-12 18:35:03,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:03,392 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2024-10-12 18:35:03,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.0930232558139537) internal successors, (90), 42 states have internal predecessors, (90), 0 states have call successors, (0), 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 18:35:03,392 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2024-10-12 18:35:03,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-12 18:35:03,392 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:03,392 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:03,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2024-10-12 18:35:03,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:03,593 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:03,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:03,593 INFO L85 PathProgramCache]: Analyzing trace with hash -129988228, now seen corresponding path program 35 times [2024-10-12 18:35:03,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:03,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483439855] [2024-10-12 18:35:03,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:03,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:03,897 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 101 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:03,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:03,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483439855] [2024-10-12 18:35:03,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483439855] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:35:03,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783959115] [2024-10-12 18:35:03,898 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-12 18:35:03,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:03,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:35:03,899 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:35:03,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-10-12 18:35:03,977 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-10-12 18:35:03,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:35:03,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-12 18:35:03,979 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:35:04,327 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 126 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:04,327 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:35:04,534 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 126 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:04,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783959115] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:35:04,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:35:04,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 41 [2024-10-12 18:35:04,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734233324] [2024-10-12 18:35:04,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:35:04,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-10-12 18:35:04,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:04,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-10-12 18:35:04,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=1404, Unknown=0, NotChecked=0, Total=1722 [2024-10-12 18:35:04,535 INFO L87 Difference]: Start difference. First operand 66 states and 77 transitions. Second operand has 42 states, 42 states have (on average 2.119047619047619) internal successors, (89), 41 states have internal predecessors, (89), 0 states have call successors, (0), 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 18:35:04,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:04,740 INFO L93 Difference]: Finished difference Result 155 states and 168 transitions. [2024-10-12 18:35:04,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-12 18:35:04,740 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.119047619047619) internal successors, (89), 41 states have internal predecessors, (89), 0 states have call successors, (0), 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 46 [2024-10-12 18:35:04,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:04,741 INFO L225 Difference]: With dead ends: 155 [2024-10-12 18:35:04,741 INFO L226 Difference]: Without dead ends: 121 [2024-10-12 18:35:04,742 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 54 SyntacticMatches, 20 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1096 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=326, Invalid=1480, Unknown=0, NotChecked=0, Total=1806 [2024-10-12 18:35:04,742 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:35:04,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 147 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:35:04,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-10-12 18:35:04,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 66. [2024-10-12 18:35:04,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 65 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 18:35:04,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2024-10-12 18:35:04,772 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 46 [2024-10-12 18:35:04,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:04,772 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2024-10-12 18:35:04,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.119047619047619) internal successors, (89), 41 states have internal predecessors, (89), 0 states have call successors, (0), 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 18:35:04,772 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2024-10-12 18:35:04,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-12 18:35:04,772 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:04,772 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:04,785 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2024-10-12 18:35:04,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:04,973 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:04,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:04,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1368168093, now seen corresponding path program 36 times [2024-10-12 18:35:04,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:04,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79301954] [2024-10-12 18:35:04,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:04,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:05,299 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 101 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:05,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:05,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79301954] [2024-10-12 18:35:05,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79301954] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:35:05,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273837837] [2024-10-12 18:35:05,299 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-12 18:35:05,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:05,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:35:05,302 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:35:05,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-10-12 18:35:05,397 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-10-12 18:35:05,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:35:05,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-12 18:35:05,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:35:05,735 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 126 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:05,735 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:35:05,940 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 126 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:05,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273837837] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:35:05,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:35:05,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 40 [2024-10-12 18:35:05,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884081520] [2024-10-12 18:35:05,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:35:05,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-10-12 18:35:05,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:05,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-10-12 18:35:05,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=1325, Unknown=0, NotChecked=0, Total=1640 [2024-10-12 18:35:05,942 INFO L87 Difference]: Start difference. First operand 66 states and 77 transitions. Second operand has 41 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 40 states have internal predecessors, (88), 0 states have call successors, (0), 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 18:35:06,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:06,142 INFO L93 Difference]: Finished difference Result 149 states and 162 transitions. [2024-10-12 18:35:06,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-12 18:35:06,142 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 40 states have internal predecessors, (88), 0 states have call successors, (0), 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 46 [2024-10-12 18:35:06,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:06,143 INFO L225 Difference]: With dead ends: 149 [2024-10-12 18:35:06,143 INFO L226 Difference]: Without dead ends: 115 [2024-10-12 18:35:06,143 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 55 SyntacticMatches, 20 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1003 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=323, Invalid=1399, Unknown=0, NotChecked=0, Total=1722 [2024-10-12 18:35:06,144 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:35:06,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 197 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:35:06,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-10-12 18:35:06,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 66. [2024-10-12 18:35:06,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 65 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 18:35:06,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2024-10-12 18:35:06,175 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 46 [2024-10-12 18:35:06,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:06,175 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2024-10-12 18:35:06,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 40 states have internal predecessors, (88), 0 states have call successors, (0), 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 18:35:06,175 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2024-10-12 18:35:06,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-12 18:35:06,175 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:06,175 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:06,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2024-10-12 18:35:06,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:06,376 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:06,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:06,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1139401052, now seen corresponding path program 9 times [2024-10-12 18:35:06,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:06,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650439984] [2024-10-12 18:35:06,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:06,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:06,673 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 101 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:06,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:06,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650439984] [2024-10-12 18:35:06,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650439984] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:35:06,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314430579] [2024-10-12 18:35:06,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 18:35:06,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:06,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:35:06,675 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:35:06,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-10-12 18:35:06,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-10-12 18:35:06,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:35:06,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-12 18:35:06,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:35:07,077 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 126 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:07,077 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:35:07,287 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 126 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:07,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314430579] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:35:07,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:35:07,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 39 [2024-10-12 18:35:07,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826171720] [2024-10-12 18:35:07,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:35:07,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-10-12 18:35:07,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:07,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-10-12 18:35:07,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=1244, Unknown=0, NotChecked=0, Total=1560 [2024-10-12 18:35:07,288 INFO L87 Difference]: Start difference. First operand 66 states and 77 transitions. Second operand has 40 states, 40 states have (on average 2.175) internal successors, (87), 39 states have internal predecessors, (87), 0 states have call successors, (0), 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 18:35:07,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:07,450 INFO L93 Difference]: Finished difference Result 144 states and 158 transitions. [2024-10-12 18:35:07,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-12 18:35:07,450 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.175) internal successors, (87), 39 states have internal predecessors, (87), 0 states have call successors, (0), 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 46 [2024-10-12 18:35:07,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:07,451 INFO L225 Difference]: With dead ends: 144 [2024-10-12 18:35:07,451 INFO L226 Difference]: Without dead ends: 110 [2024-10-12 18:35:07,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 56 SyntacticMatches, 20 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 905 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=324, Invalid=1316, Unknown=0, NotChecked=0, Total=1640 [2024-10-12 18:35:07,452 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 9 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:35:07,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 130 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:35:07,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-10-12 18:35:07,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 68. [2024-10-12 18:35:07,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.1940298507462686) internal successors, (80), 67 states have internal predecessors, (80), 0 states have call successors, (0), 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 18:35:07,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 80 transitions. [2024-10-12 18:35:07,485 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 80 transitions. Word has length 46 [2024-10-12 18:35:07,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:07,485 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 80 transitions. [2024-10-12 18:35:07,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.175) internal successors, (87), 39 states have internal predecessors, (87), 0 states have call successors, (0), 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 18:35:07,485 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 80 transitions. [2024-10-12 18:35:07,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-10-12 18:35:07,486 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:07,486 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:07,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2024-10-12 18:35:07,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2024-10-12 18:35:07,686 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:07,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:07,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1107222095, now seen corresponding path program 18 times [2024-10-12 18:35:07,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:07,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098244703] [2024-10-12 18:35:07,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:07,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:07,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:07,846 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 45 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:07,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:07,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098244703] [2024-10-12 18:35:07,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098244703] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:35:07,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415366416] [2024-10-12 18:35:07,847 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-12 18:35:07,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:07,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:35:07,848 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:35:07,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2024-10-12 18:35:07,930 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-10-12 18:35:07,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:35:07,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-12 18:35:07,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:35:07,980 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 55 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:07,980 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:35:08,116 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 55 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:08,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415366416] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:35:08,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:35:08,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 15 [2024-10-12 18:35:08,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371358375] [2024-10-12 18:35:08,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:35:08,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-12 18:35:08,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:08,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-12 18:35:08,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2024-10-12 18:35:08,118 INFO L87 Difference]: Start difference. First operand 68 states and 80 transitions. Second operand has 16 states, 16 states have (on average 3.4375) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:35:08,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:08,335 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2024-10-12 18:35:08,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-12 18:35:08,336 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-10-12 18:35:08,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:08,336 INFO L225 Difference]: With dead ends: 79 [2024-10-12 18:35:08,336 INFO L226 Difference]: Without dead ends: 77 [2024-10-12 18:35:08,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 80 SyntacticMatches, 20 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=236, Invalid=414, Unknown=0, NotChecked=0, Total=650 [2024-10-12 18:35:08,337 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 28 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:35:08,337 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 145 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:35:08,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-10-12 18:35:08,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2024-10-12 18:35:08,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.1857142857142857) internal successors, (83), 70 states have internal predecessors, (83), 0 states have call successors, (0), 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 18:35:08,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 83 transitions. [2024-10-12 18:35:08,387 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 83 transitions. Word has length 47 [2024-10-12 18:35:08,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:08,387 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 83 transitions. [2024-10-12 18:35:08,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:35:08,388 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 83 transitions. [2024-10-12 18:35:08,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-12 18:35:08,388 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:08,388 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:08,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2024-10-12 18:35:08,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:08,589 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:08,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:08,589 INFO L85 PathProgramCache]: Analyzing trace with hash -90558015, now seen corresponding path program 19 times [2024-10-12 18:35:08,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:08,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485152996] [2024-10-12 18:35:08,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:08,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:08,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:08,878 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 127 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:08,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:08,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485152996] [2024-10-12 18:35:08,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485152996] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:35:08,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818458611] [2024-10-12 18:35:08,878 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-12 18:35:08,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:08,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:35:08,879 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:35:08,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2024-10-12 18:35:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:08,966 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-12 18:35:08,967 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:35:09,492 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 155 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:09,492 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:35:09,737 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 155 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:09,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818458611] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:35:09,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:35:09,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 52 [2024-10-12 18:35:09,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838008714] [2024-10-12 18:35:09,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:35:09,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-10-12 18:35:09,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:09,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-10-12 18:35:09,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=527, Invalid=2229, Unknown=0, NotChecked=0, Total=2756 [2024-10-12 18:35:09,738 INFO L87 Difference]: Start difference. First operand 71 states and 83 transitions. Second operand has 53 states, 53 states have (on average 1.9622641509433962) internal successors, (104), 52 states have internal predecessors, (104), 0 states have call successors, (0), 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 18:35:09,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:09,912 INFO L93 Difference]: Finished difference Result 154 states and 168 transitions. [2024-10-12 18:35:09,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-12 18:35:09,913 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.9622641509433962) internal successors, (104), 52 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-10-12 18:35:09,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:09,913 INFO L225 Difference]: With dead ends: 154 [2024-10-12 18:35:09,914 INFO L226 Difference]: Without dead ends: 117 [2024-10-12 18:35:09,914 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 51 SyntacticMatches, 22 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2144 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=535, Invalid=2327, Unknown=0, NotChecked=0, Total=2862 [2024-10-12 18:35:09,914 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 9 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:35:09,914 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 131 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:35:09,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-10-12 18:35:09,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 72. [2024-10-12 18:35:09,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.1830985915492958) internal successors, (84), 71 states have internal predecessors, (84), 0 states have call successors, (0), 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 18:35:09,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2024-10-12 18:35:09,951 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 50 [2024-10-12 18:35:09,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:09,951 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2024-10-12 18:35:09,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.9622641509433962) internal successors, (104), 52 states have internal predecessors, (104), 0 states have call successors, (0), 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 18:35:09,951 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2024-10-12 18:35:09,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-12 18:35:09,952 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:09,952 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:09,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2024-10-12 18:35:10,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2024-10-12 18:35:10,152 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:10,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:10,153 INFO L85 PathProgramCache]: Analyzing trace with hash 488265216, now seen corresponding path program 37 times [2024-10-12 18:35:10,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:10,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372146942] [2024-10-12 18:35:10,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:10,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:10,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:10,460 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 127 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:10,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:10,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372146942] [2024-10-12 18:35:10,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372146942] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:35:10,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238790524] [2024-10-12 18:35:10,460 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-12 18:35:10,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:10,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:35:10,461 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:35:10,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2024-10-12 18:35:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:10,548 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-12 18:35:10,550 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:35:11,048 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 155 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:11,048 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:35:11,295 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 155 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:11,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238790524] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:35:11,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:35:11,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 51 [2024-10-12 18:35:11,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991897604] [2024-10-12 18:35:11,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:35:11,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-10-12 18:35:11,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:11,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-10-12 18:35:11,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=493, Invalid=2159, Unknown=0, NotChecked=0, Total=2652 [2024-10-12 18:35:11,297 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand has 52 states, 52 states have (on average 1.9807692307692308) internal successors, (103), 51 states have internal predecessors, (103), 0 states have call successors, (0), 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 18:35:11,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:11,523 INFO L93 Difference]: Finished difference Result 163 states and 177 transitions. [2024-10-12 18:35:11,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-12 18:35:11,523 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.9807692307692308) internal successors, (103), 51 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-10-12 18:35:11,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:11,524 INFO L225 Difference]: With dead ends: 163 [2024-10-12 18:35:11,524 INFO L226 Difference]: Without dead ends: 126 [2024-10-12 18:35:11,524 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 52 SyntacticMatches, 22 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2061 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=501, Invalid=2255, Unknown=0, NotChecked=0, Total=2756 [2024-10-12 18:35:11,524 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 9 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:35:11,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 198 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:35:11,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-10-12 18:35:11,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 72. [2024-10-12 18:35:11,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.1830985915492958) internal successors, (84), 71 states have internal predecessors, (84), 0 states have call successors, (0), 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 18:35:11,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2024-10-12 18:35:11,564 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 50 [2024-10-12 18:35:11,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:11,564 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2024-10-12 18:35:11,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.9807692307692308) internal successors, (103), 51 states have internal predecessors, (103), 0 states have call successors, (0), 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 18:35:11,565 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2024-10-12 18:35:11,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-12 18:35:11,565 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:11,565 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:11,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2024-10-12 18:35:11,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2024-10-12 18:35:11,766 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:11,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:11,766 INFO L85 PathProgramCache]: Analyzing trace with hash 368389601, now seen corresponding path program 38 times [2024-10-12 18:35:11,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:11,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252767899] [2024-10-12 18:35:11,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:11,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:12,044 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 127 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:12,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:12,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252767899] [2024-10-12 18:35:12,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252767899] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:35:12,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866141244] [2024-10-12 18:35:12,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 18:35:12,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:12,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:35:12,045 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:35:12,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2024-10-12 18:35:12,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 18:35:12,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:35:12,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-12 18:35:12,130 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:35:12,607 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 155 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:12,607 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:35:12,850 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 155 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:12,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866141244] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:35:12,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:35:12,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 50 [2024-10-12 18:35:12,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148109888] [2024-10-12 18:35:12,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:35:12,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-10-12 18:35:12,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:12,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-10-12 18:35:12,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=2087, Unknown=0, NotChecked=0, Total=2550 [2024-10-12 18:35:12,852 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand has 51 states, 51 states have (on average 2.0) internal successors, (102), 50 states have internal predecessors, (102), 0 states have call successors, (0), 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 18:35:13,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:13,112 INFO L93 Difference]: Finished difference Result 170 states and 184 transitions. [2024-10-12 18:35:13,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-12 18:35:13,113 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.0) internal successors, (102), 50 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-10-12 18:35:13,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:13,113 INFO L225 Difference]: With dead ends: 170 [2024-10-12 18:35:13,113 INFO L226 Difference]: Without dead ends: 133 [2024-10-12 18:35:13,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 53 SyntacticMatches, 22 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1939 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=471, Invalid=2181, Unknown=0, NotChecked=0, Total=2652 [2024-10-12 18:35:13,114 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 9 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:35:13,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 205 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:35:13,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-10-12 18:35:13,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 72. [2024-10-12 18:35:13,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.1830985915492958) internal successors, (84), 71 states have internal predecessors, (84), 0 states have call successors, (0), 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 18:35:13,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2024-10-12 18:35:13,163 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 50 [2024-10-12 18:35:13,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:13,163 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2024-10-12 18:35:13,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.0) internal successors, (102), 50 states have internal predecessors, (102), 0 states have call successors, (0), 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 18:35:13,163 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2024-10-12 18:35:13,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-12 18:35:13,163 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:13,163 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 7, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:13,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2024-10-12 18:35:13,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2024-10-12 18:35:13,364 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:13,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:13,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1436592672, now seen corresponding path program 39 times [2024-10-12 18:35:13,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:13,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744326760] [2024-10-12 18:35:13,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:13,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:13,634 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 127 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:13,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:13,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744326760] [2024-10-12 18:35:13,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744326760] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:35:13,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139177215] [2024-10-12 18:35:13,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 18:35:13,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:13,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:35:13,635 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:35:13,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2024-10-12 18:35:13,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-12 18:35:13,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:35:13,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-12 18:35:13,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:35:14,196 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 155 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:14,196 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:35:14,442 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 155 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:14,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139177215] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:35:14,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:35:14,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 49 [2024-10-12 18:35:14,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492388839] [2024-10-12 18:35:14,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:35:14,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-10-12 18:35:14,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:14,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-10-12 18:35:14,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=2013, Unknown=0, NotChecked=0, Total=2450 [2024-10-12 18:35:14,444 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand has 50 states, 50 states have (on average 2.02) internal successors, (101), 49 states have internal predecessors, (101), 0 states have call successors, (0), 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 18:35:14,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:14,738 INFO L93 Difference]: Finished difference Result 175 states and 189 transitions. [2024-10-12 18:35:14,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-12 18:35:14,739 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.02) internal successors, (101), 49 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-10-12 18:35:14,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:14,739 INFO L225 Difference]: With dead ends: 175 [2024-10-12 18:35:14,739 INFO L226 Difference]: Without dead ends: 138 [2024-10-12 18:35:14,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 54 SyntacticMatches, 22 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1820 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=445, Invalid=2105, Unknown=0, NotChecked=0, Total=2550 [2024-10-12 18:35:14,740 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 9 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:35:14,740 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 211 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:35:14,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-10-12 18:35:14,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 72. [2024-10-12 18:35:14,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.1830985915492958) internal successors, (84), 71 states have internal predecessors, (84), 0 states have call successors, (0), 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 18:35:14,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2024-10-12 18:35:14,787 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 50 [2024-10-12 18:35:14,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:14,787 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2024-10-12 18:35:14,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.02) internal successors, (101), 49 states have internal predecessors, (101), 0 states have call successors, (0), 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 18:35:14,787 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2024-10-12 18:35:14,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-12 18:35:14,788 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:14,788 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:14,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2024-10-12 18:35:14,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2024-10-12 18:35:14,988 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:14,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:14,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1910459903, now seen corresponding path program 40 times [2024-10-12 18:35:14,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:14,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383966224] [2024-10-12 18:35:14,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:14,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:14,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:15,254 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 127 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:15,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:15,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383966224] [2024-10-12 18:35:15,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383966224] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:35:15,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348360244] [2024-10-12 18:35:15,254 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-12 18:35:15,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:15,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:35:15,255 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:35:15,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2024-10-12 18:35:15,340 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-12 18:35:15,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:35:15,341 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-12 18:35:15,342 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:35:15,799 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 155 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:15,800 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:35:16,037 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 155 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:16,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348360244] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:35:16,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:35:16,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 48 [2024-10-12 18:35:16,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703421964] [2024-10-12 18:35:16,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:35:16,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-10-12 18:35:16,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:16,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-10-12 18:35:16,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=1937, Unknown=0, NotChecked=0, Total=2352 [2024-10-12 18:35:16,039 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand has 49 states, 49 states have (on average 2.0408163265306123) internal successors, (100), 48 states have internal predecessors, (100), 0 states have call successors, (0), 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 18:35:16,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:16,339 INFO L93 Difference]: Finished difference Result 178 states and 192 transitions. [2024-10-12 18:35:16,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-12 18:35:16,339 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.0408163265306123) internal successors, (100), 48 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-10-12 18:35:16,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:16,340 INFO L225 Difference]: With dead ends: 178 [2024-10-12 18:35:16,340 INFO L226 Difference]: Without dead ends: 141 [2024-10-12 18:35:16,340 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 55 SyntacticMatches, 22 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1704 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=423, Invalid=2027, Unknown=0, NotChecked=0, Total=2450 [2024-10-12 18:35:16,340 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 9 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:35:16,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 176 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:35:16,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-10-12 18:35:16,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 72. [2024-10-12 18:35:16,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.1830985915492958) internal successors, (84), 71 states have internal predecessors, (84), 0 states have call successors, (0), 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 18:35:16,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2024-10-12 18:35:16,404 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 50 [2024-10-12 18:35:16,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:16,404 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2024-10-12 18:35:16,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.0408163265306123) internal successors, (100), 48 states have internal predecessors, (100), 0 states have call successors, (0), 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 18:35:16,404 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2024-10-12 18:35:16,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-12 18:35:16,404 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:16,404 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:16,419 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2024-10-12 18:35:16,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:16,605 INFO L396 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:16,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:16,605 INFO L85 PathProgramCache]: Analyzing trace with hash 983748032, now seen corresponding path program 41 times [2024-10-12 18:35:16,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:16,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613006544] [2024-10-12 18:35:16,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:16,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:16,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:16,879 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 127 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:16,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:16,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613006544] [2024-10-12 18:35:16,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613006544] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:35:16,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959041977] [2024-10-12 18:35:16,879 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-12 18:35:16,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:16,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:35:16,880 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:35:16,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2024-10-12 18:35:16,969 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-10-12 18:35:16,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:35:16,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-12 18:35:16,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:35:17,413 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 155 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:17,413 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:35:17,646 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 155 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:17,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959041977] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:35:17,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:35:17,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 47 [2024-10-12 18:35:17,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039090702] [2024-10-12 18:35:17,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:35:17,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-10-12 18:35:17,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:17,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-10-12 18:35:17,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=1859, Unknown=0, NotChecked=0, Total=2256 [2024-10-12 18:35:17,647 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand has 48 states, 48 states have (on average 2.0625) internal successors, (99), 47 states have internal predecessors, (99), 0 states have call successors, (0), 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 18:35:17,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:17,956 INFO L93 Difference]: Finished difference Result 179 states and 193 transitions. [2024-10-12 18:35:17,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-12 18:35:17,956 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.0625) internal successors, (99), 47 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-10-12 18:35:17,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:17,957 INFO L225 Difference]: With dead ends: 179 [2024-10-12 18:35:17,957 INFO L226 Difference]: Without dead ends: 142 [2024-10-12 18:35:17,957 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 56 SyntacticMatches, 22 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1591 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=405, Invalid=1947, Unknown=0, NotChecked=0, Total=2352 [2024-10-12 18:35:17,957 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 9 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:35:17,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 199 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:35:17,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-10-12 18:35:18,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 72. [2024-10-12 18:35:18,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.1830985915492958) internal successors, (84), 71 states have internal predecessors, (84), 0 states have call successors, (0), 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 18:35:18,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2024-10-12 18:35:18,004 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 50 [2024-10-12 18:35:18,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:18,004 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2024-10-12 18:35:18,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.0625) internal successors, (99), 47 states have internal predecessors, (99), 0 states have call successors, (0), 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 18:35:18,004 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2024-10-12 18:35:18,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-12 18:35:18,005 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:18,005 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:18,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2024-10-12 18:35:18,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:18,205 INFO L396 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:18,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:18,206 INFO L85 PathProgramCache]: Analyzing trace with hash -308363743, now seen corresponding path program 42 times [2024-10-12 18:35:18,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:18,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503419251] [2024-10-12 18:35:18,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:18,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:18,473 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 127 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:18,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:18,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503419251] [2024-10-12 18:35:18,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503419251] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:35:18,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448368641] [2024-10-12 18:35:18,473 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-12 18:35:18,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:18,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:35:18,474 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:35:18,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2024-10-12 18:35:18,565 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-10-12 18:35:18,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:35:18,566 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-12 18:35:18,567 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:35:18,999 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 155 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:18,999 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:35:19,233 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 155 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:19,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448368641] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:35:19,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:35:19,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 46 [2024-10-12 18:35:19,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201190501] [2024-10-12 18:35:19,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:35:19,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-10-12 18:35:19,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:19,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-10-12 18:35:19,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=1779, Unknown=0, NotChecked=0, Total=2162 [2024-10-12 18:35:19,235 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand has 47 states, 47 states have (on average 2.0851063829787235) internal successors, (98), 46 states have internal predecessors, (98), 0 states have call successors, (0), 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 18:35:19,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:19,591 INFO L93 Difference]: Finished difference Result 178 states and 192 transitions. [2024-10-12 18:35:19,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-12 18:35:19,592 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.0851063829787235) internal successors, (98), 46 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-10-12 18:35:19,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:19,593 INFO L225 Difference]: With dead ends: 178 [2024-10-12 18:35:19,593 INFO L226 Difference]: Without dead ends: 141 [2024-10-12 18:35:19,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 57 SyntacticMatches, 22 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1481 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=391, Invalid=1865, Unknown=0, NotChecked=0, Total=2256 [2024-10-12 18:35:19,593 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 9 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 18:35:19,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 286 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 18:35:19,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-10-12 18:35:19,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 72. [2024-10-12 18:35:19,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.1830985915492958) internal successors, (84), 71 states have internal predecessors, (84), 0 states have call successors, (0), 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 18:35:19,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2024-10-12 18:35:19,648 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 50 [2024-10-12 18:35:19,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:19,648 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2024-10-12 18:35:19,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.0851063829787235) internal successors, (98), 46 states have internal predecessors, (98), 0 states have call successors, (0), 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 18:35:19,648 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2024-10-12 18:35:19,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-12 18:35:19,649 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:19,649 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 7, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:19,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2024-10-12 18:35:19,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:19,849 INFO L396 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:19,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:19,850 INFO L85 PathProgramCache]: Analyzing trace with hash -350044768, now seen corresponding path program 43 times [2024-10-12 18:35:19,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:19,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638273926] [2024-10-12 18:35:19,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:19,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:20,117 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 127 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:20,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:20,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638273926] [2024-10-12 18:35:20,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638273926] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:35:20,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319081081] [2024-10-12 18:35:20,118 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-12 18:35:20,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:20,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:35:20,119 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:35:20,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2024-10-12 18:35:20,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:20,207 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-12 18:35:20,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:35:20,624 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 155 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:20,625 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:35:20,864 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 155 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:20,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319081081] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:35:20,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:35:20,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 45 [2024-10-12 18:35:20,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262721681] [2024-10-12 18:35:20,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:35:20,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-10-12 18:35:20,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:20,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-10-12 18:35:20,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=373, Invalid=1697, Unknown=0, NotChecked=0, Total=2070 [2024-10-12 18:35:20,866 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand has 46 states, 46 states have (on average 2.108695652173913) internal successors, (97), 45 states have internal predecessors, (97), 0 states have call successors, (0), 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 18:35:21,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:21,171 INFO L93 Difference]: Finished difference Result 175 states and 189 transitions. [2024-10-12 18:35:21,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-12 18:35:21,171 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.108695652173913) internal successors, (97), 45 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-10-12 18:35:21,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:21,172 INFO L225 Difference]: With dead ends: 175 [2024-10-12 18:35:21,172 INFO L226 Difference]: Without dead ends: 138 [2024-10-12 18:35:21,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 58 SyntacticMatches, 22 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1374 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=381, Invalid=1781, Unknown=0, NotChecked=0, Total=2162 [2024-10-12 18:35:21,172 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 9 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:35:21,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 203 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:35:21,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-10-12 18:35:21,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 72. [2024-10-12 18:35:21,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.1830985915492958) internal successors, (84), 71 states have internal predecessors, (84), 0 states have call successors, (0), 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 18:35:21,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2024-10-12 18:35:21,231 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 50 [2024-10-12 18:35:21,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:21,231 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2024-10-12 18:35:21,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.108695652173913) internal successors, (97), 45 states have internal predecessors, (97), 0 states have call successors, (0), 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 18:35:21,231 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2024-10-12 18:35:21,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-12 18:35:21,232 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:21,232 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:21,244 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2024-10-12 18:35:21,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2024-10-12 18:35:21,432 INFO L396 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:21,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:21,433 INFO L85 PathProgramCache]: Analyzing trace with hash 2003915329, now seen corresponding path program 44 times [2024-10-12 18:35:21,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:21,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887051323] [2024-10-12 18:35:21,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:21,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:21,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:21,702 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 127 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:21,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:21,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887051323] [2024-10-12 18:35:21,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887051323] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:35:21,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199187263] [2024-10-12 18:35:21,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 18:35:21,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:21,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:35:21,704 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:35:21,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2024-10-12 18:35:21,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 18:35:21,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:35:21,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-12 18:35:21,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:35:22,187 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 155 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:22,187 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:35:22,431 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 155 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:22,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199187263] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:35:22,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:35:22,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 44 [2024-10-12 18:35:22,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396039395] [2024-10-12 18:35:22,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:35:22,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-10-12 18:35:22,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:22,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-10-12 18:35:22,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1613, Unknown=0, NotChecked=0, Total=1980 [2024-10-12 18:35:22,432 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand has 45 states, 45 states have (on average 2.1333333333333333) internal successors, (96), 44 states have internal predecessors, (96), 0 states have call successors, (0), 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 18:35:22,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:22,721 INFO L93 Difference]: Finished difference Result 170 states and 184 transitions. [2024-10-12 18:35:22,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-12 18:35:22,722 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.1333333333333333) internal successors, (96), 44 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-10-12 18:35:22,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:22,722 INFO L225 Difference]: With dead ends: 170 [2024-10-12 18:35:22,722 INFO L226 Difference]: Without dead ends: 133 [2024-10-12 18:35:22,723 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 59 SyntacticMatches, 22 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1270 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=375, Invalid=1695, Unknown=0, NotChecked=0, Total=2070 [2024-10-12 18:35:22,723 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 9 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:35:22,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 217 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:35:22,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-10-12 18:35:22,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 72. [2024-10-12 18:35:22,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.1830985915492958) internal successors, (84), 71 states have internal predecessors, (84), 0 states have call successors, (0), 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 18:35:22,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2024-10-12 18:35:22,769 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 50 [2024-10-12 18:35:22,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:22,769 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2024-10-12 18:35:22,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.1333333333333333) internal successors, (96), 44 states have internal predecessors, (96), 0 states have call successors, (0), 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 18:35:22,769 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2024-10-12 18:35:22,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-12 18:35:22,769 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:22,769 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:22,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2024-10-12 18:35:22,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:22,970 INFO L396 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:22,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:22,970 INFO L85 PathProgramCache]: Analyzing trace with hash 278734208, now seen corresponding path program 45 times [2024-10-12 18:35:22,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:22,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698939000] [2024-10-12 18:35:22,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:22,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:23,239 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 127 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:23,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:23,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698939000] [2024-10-12 18:35:23,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698939000] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:35:23,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297165926] [2024-10-12 18:35:23,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 18:35:23,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:23,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:35:23,240 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:35:23,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2024-10-12 18:35:23,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-12 18:35:23,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:35:23,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-12 18:35:23,335 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:35:23,714 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 155 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:23,714 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:35:23,960 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 155 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:23,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297165926] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:35:23,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:35:23,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 43 [2024-10-12 18:35:23,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069123526] [2024-10-12 18:35:23,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:35:23,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-10-12 18:35:23,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:23,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-10-12 18:35:23,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=1527, Unknown=0, NotChecked=0, Total=1892 [2024-10-12 18:35:23,961 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand has 44 states, 44 states have (on average 2.159090909090909) internal successors, (95), 43 states have internal predecessors, (95), 0 states have call successors, (0), 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 18:35:24,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:24,221 INFO L93 Difference]: Finished difference Result 163 states and 177 transitions. [2024-10-12 18:35:24,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-12 18:35:24,221 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.159090909090909) internal successors, (95), 43 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-10-12 18:35:24,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:24,222 INFO L225 Difference]: With dead ends: 163 [2024-10-12 18:35:24,222 INFO L226 Difference]: Without dead ends: 126 [2024-10-12 18:35:24,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 60 SyntacticMatches, 22 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1169 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=373, Invalid=1607, Unknown=0, NotChecked=0, Total=1980 [2024-10-12 18:35:24,222 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 9 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:35:24,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 206 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:35:24,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-10-12 18:35:24,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 72. [2024-10-12 18:35:24,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.1830985915492958) internal successors, (84), 71 states have internal predecessors, (84), 0 states have call successors, (0), 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 18:35:24,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2024-10-12 18:35:24,272 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 50 [2024-10-12 18:35:24,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:24,272 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2024-10-12 18:35:24,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.159090909090909) internal successors, (95), 43 states have internal predecessors, (95), 0 states have call successors, (0), 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 18:35:24,272 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2024-10-12 18:35:24,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-12 18:35:24,272 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:24,272 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:24,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2024-10-12 18:35:24,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:24,473 INFO L396 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:24,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:24,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1192914529, now seen corresponding path program 10 times [2024-10-12 18:35:24,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:24,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862382245] [2024-10-12 18:35:24,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:24,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:24,743 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 127 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:24,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:24,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862382245] [2024-10-12 18:35:24,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862382245] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:35:24,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869287598] [2024-10-12 18:35:24,744 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-12 18:35:24,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:24,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:35:24,745 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:35:24,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2024-10-12 18:35:24,841 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-12 18:35:24,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:35:24,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-12 18:35:24,844 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:35:25,229 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 155 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:25,229 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:35:25,511 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 155 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:25,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869287598] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:35:25,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:35:25,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 42 [2024-10-12 18:35:25,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050266869] [2024-10-12 18:35:25,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:35:25,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-10-12 18:35:25,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:25,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-10-12 18:35:25,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1439, Unknown=0, NotChecked=0, Total=1806 [2024-10-12 18:35:25,513 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand has 43 states, 43 states have (on average 2.186046511627907) internal successors, (94), 42 states have internal predecessors, (94), 0 states have call successors, (0), 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 18:35:25,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:25,727 INFO L93 Difference]: Finished difference Result 157 states and 172 transitions. [2024-10-12 18:35:25,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-12 18:35:25,728 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.186046511627907) internal successors, (94), 42 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-10-12 18:35:25,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:25,728 INFO L225 Difference]: With dead ends: 157 [2024-10-12 18:35:25,728 INFO L226 Difference]: Without dead ends: 120 [2024-10-12 18:35:25,729 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 61 SyntacticMatches, 22 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1062 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=375, Invalid=1517, Unknown=0, NotChecked=0, Total=1892 [2024-10-12 18:35:25,729 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 9 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:35:25,729 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 143 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:35:25,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-10-12 18:35:25,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 74. [2024-10-12 18:35:25,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.1917808219178083) internal successors, (87), 73 states have internal predecessors, (87), 0 states have call successors, (0), 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 18:35:25,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 87 transitions. [2024-10-12 18:35:25,777 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 87 transitions. Word has length 50 [2024-10-12 18:35:25,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:25,777 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 87 transitions. [2024-10-12 18:35:25,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.186046511627907) internal successors, (94), 42 states have internal predecessors, (94), 0 states have call successors, (0), 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 18:35:25,777 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 87 transitions. [2024-10-12 18:35:25,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-12 18:35:25,777 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:25,777 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:25,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2024-10-12 18:35:25,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2024-10-12 18:35:25,978 INFO L396 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:25,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:25,978 INFO L85 PathProgramCache]: Analyzing trace with hash -785092365, now seen corresponding path program 20 times [2024-10-12 18:35:25,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:25,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785344188] [2024-10-12 18:35:25,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:25,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:25,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:26,127 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 55 proven. 166 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:26,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:26,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785344188] [2024-10-12 18:35:26,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785344188] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:35:26,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81759317] [2024-10-12 18:35:26,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 18:35:26,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:26,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:35:26,129 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:35:26,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2024-10-12 18:35:26,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 18:35:26,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:35:26,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-12 18:35:26,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:35:26,299 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 66 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:26,299 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:35:26,480 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 66 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:26,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81759317] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:35:26,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:35:26,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 16 [2024-10-12 18:35:26,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510960384] [2024-10-12 18:35:26,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:35:26,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-12 18:35:26,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:26,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-12 18:35:26,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2024-10-12 18:35:26,481 INFO L87 Difference]: Start difference. First operand 74 states and 87 transitions. Second operand has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 16 states have internal predecessors, (59), 0 states have call successors, (0), 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 18:35:26,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:26,655 INFO L93 Difference]: Finished difference Result 85 states and 98 transitions. [2024-10-12 18:35:26,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-12 18:35:26,655 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 16 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-10-12 18:35:26,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:26,656 INFO L225 Difference]: With dead ends: 85 [2024-10-12 18:35:26,656 INFO L226 Difference]: Without dead ends: 83 [2024-10-12 18:35:26,656 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 86 SyntacticMatches, 23 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=275, Invalid=481, Unknown=0, NotChecked=0, Total=756 [2024-10-12 18:35:26,656 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 30 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:35:26,656 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 131 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:35:26,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-10-12 18:35:26,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 77. [2024-10-12 18:35:26,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.1842105263157894) internal successors, (90), 76 states have internal predecessors, (90), 0 states have call successors, (0), 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 18:35:26,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 90 transitions. [2024-10-12 18:35:26,706 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 90 transitions. Word has length 51 [2024-10-12 18:35:26,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:26,706 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 90 transitions. [2024-10-12 18:35:26,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 16 states have internal predecessors, (59), 0 states have call successors, (0), 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 18:35:26,706 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 90 transitions. [2024-10-12 18:35:26,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-12 18:35:26,707 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:26,707 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:26,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2024-10-12 18:35:26,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2024-10-12 18:35:26,907 INFO L396 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:26,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:26,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1710091421, now seen corresponding path program 21 times [2024-10-12 18:35:26,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:26,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304110087] [2024-10-12 18:35:26,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:26,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:26,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:27,232 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 156 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:27,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:27,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304110087] [2024-10-12 18:35:27,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304110087] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:35:27,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893345746] [2024-10-12 18:35:27,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 18:35:27,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:27,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:35:27,233 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:35:27,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2024-10-12 18:35:27,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-10-12 18:35:27,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:35:27,330 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-12 18:35:27,331 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:35:27,926 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 187 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:27,926 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:35:28,212 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 187 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:28,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893345746] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:35:28,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:35:28,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 56 [2024-10-12 18:35:28,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310236309] [2024-10-12 18:35:28,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:35:28,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-10-12 18:35:28,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:28,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-10-12 18:35:28,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=609, Invalid=2583, Unknown=0, NotChecked=0, Total=3192 [2024-10-12 18:35:28,214 INFO L87 Difference]: Start difference. First operand 77 states and 90 transitions. Second operand has 57 states, 57 states have (on average 1.9649122807017543) internal successors, (112), 56 states have internal predecessors, (112), 0 states have call successors, (0), 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 18:35:28,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:28,462 INFO L93 Difference]: Finished difference Result 167 states and 182 transitions. [2024-10-12 18:35:28,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-10-12 18:35:28,463 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.9649122807017543) internal successors, (112), 56 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-10-12 18:35:28,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:28,463 INFO L225 Difference]: With dead ends: 167 [2024-10-12 18:35:28,464 INFO L226 Difference]: Without dead ends: 127 [2024-10-12 18:35:28,464 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 55 SyntacticMatches, 24 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2526 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=617, Invalid=2689, Unknown=0, NotChecked=0, Total=3306 [2024-10-12 18:35:28,464 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 9 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:35:28,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 229 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:35:28,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-10-12 18:35:28,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 78. [2024-10-12 18:35:28,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.1818181818181819) internal successors, (91), 77 states have internal predecessors, (91), 0 states have call successors, (0), 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 18:35:28,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 91 transitions. [2024-10-12 18:35:28,521 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 91 transitions. Word has length 54 [2024-10-12 18:35:28,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:28,521 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 91 transitions. [2024-10-12 18:35:28,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.9649122807017543) internal successors, (112), 56 states have internal predecessors, (112), 0 states have call successors, (0), 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 18:35:28,521 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 91 transitions. [2024-10-12 18:35:28,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-12 18:35:28,522 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:28,522 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:28,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2024-10-12 18:35:28,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:28,722 INFO L396 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:28,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:28,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1194580316, now seen corresponding path program 46 times [2024-10-12 18:35:28,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:28,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393814335] [2024-10-12 18:35:28,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:28,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:28,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:29,068 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 156 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:29,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:29,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393814335] [2024-10-12 18:35:29,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393814335] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:35:29,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229852725] [2024-10-12 18:35:29,068 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-12 18:35:29,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:29,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:35:29,069 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:35:29,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2024-10-12 18:35:29,163 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-12 18:35:29,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:35:29,164 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-12 18:35:29,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:35:29,738 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 187 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:29,738 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:35:30,069 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 187 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:30,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229852725] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:35:30,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:35:30,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 55 [2024-10-12 18:35:30,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199971638] [2024-10-12 18:35:30,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:35:30,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-10-12 18:35:30,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:30,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-10-12 18:35:30,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=572, Invalid=2508, Unknown=0, NotChecked=0, Total=3080 [2024-10-12 18:35:30,070 INFO L87 Difference]: Start difference. First operand 78 states and 91 transitions. Second operand has 56 states, 56 states have (on average 1.9821428571428572) internal successors, (111), 55 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:35:30,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:30,367 INFO L93 Difference]: Finished difference Result 177 states and 192 transitions. [2024-10-12 18:35:30,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-10-12 18:35:30,367 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.9821428571428572) internal successors, (111), 55 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-10-12 18:35:30,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:30,368 INFO L225 Difference]: With dead ends: 177 [2024-10-12 18:35:30,368 INFO L226 Difference]: Without dead ends: 137 [2024-10-12 18:35:30,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 56 SyntacticMatches, 24 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2436 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=580, Invalid=2612, Unknown=0, NotChecked=0, Total=3192 [2024-10-12 18:35:30,368 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 9 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:35:30,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 226 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:35:30,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-10-12 18:35:30,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 78. [2024-10-12 18:35:30,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.1818181818181819) internal successors, (91), 77 states have internal predecessors, (91), 0 states have call successors, (0), 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 18:35:30,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 91 transitions. [2024-10-12 18:35:30,431 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 91 transitions. Word has length 54 [2024-10-12 18:35:30,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:30,431 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 91 transitions. [2024-10-12 18:35:30,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.9821428571428572) internal successors, (111), 55 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:35:30,431 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 91 transitions. [2024-10-12 18:35:30,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-12 18:35:30,432 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:30,432 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:30,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2024-10-12 18:35:30,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:30,632 INFO L396 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:30,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:30,633 INFO L85 PathProgramCache]: Analyzing trace with hash 623761597, now seen corresponding path program 47 times [2024-10-12 18:35:30,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:30,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774977190] [2024-10-12 18:35:30,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:30,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:30,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:30,951 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 156 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:30,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:30,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774977190] [2024-10-12 18:35:30,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774977190] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:35:30,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115746528] [2024-10-12 18:35:30,952 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-12 18:35:30,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:30,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:35:30,953 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:35:30,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2024-10-12 18:35:31,050 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-10-12 18:35:31,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:35:31,051 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-12 18:35:31,052 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:35:31,603 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 187 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:31,603 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:35:31,883 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 187 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:31,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115746528] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:35:31,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:35:31,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 54 [2024-10-12 18:35:31,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779452122] [2024-10-12 18:35:31,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:35:31,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-10-12 18:35:31,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:31,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-10-12 18:35:31,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=539, Invalid=2431, Unknown=0, NotChecked=0, Total=2970 [2024-10-12 18:35:31,884 INFO L87 Difference]: Start difference. First operand 78 states and 91 transitions. Second operand has 55 states, 55 states have (on average 2.0) internal successors, (110), 54 states have internal predecessors, (110), 0 states have call successors, (0), 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 18:35:32,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:32,256 INFO L93 Difference]: Finished difference Result 185 states and 200 transitions. [2024-10-12 18:35:32,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-10-12 18:35:32,256 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.0) internal successors, (110), 54 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-10-12 18:35:32,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:32,257 INFO L225 Difference]: With dead ends: 185 [2024-10-12 18:35:32,257 INFO L226 Difference]: Without dead ends: 145 [2024-10-12 18:35:32,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 57 SyntacticMatches, 24 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2303 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=547, Invalid=2533, Unknown=0, NotChecked=0, Total=3080 [2024-10-12 18:35:32,258 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 9 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 18:35:32,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 262 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 18:35:32,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-10-12 18:35:32,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 78. [2024-10-12 18:35:32,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.1818181818181819) internal successors, (91), 77 states have internal predecessors, (91), 0 states have call successors, (0), 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 18:35:32,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 91 transitions. [2024-10-12 18:35:32,347 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 91 transitions. Word has length 54 [2024-10-12 18:35:32,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:32,347 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 91 transitions. [2024-10-12 18:35:32,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.0) internal successors, (110), 54 states have internal predecessors, (110), 0 states have call successors, (0), 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 18:35:32,347 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 91 transitions. [2024-10-12 18:35:32,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-12 18:35:32,348 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:32,348 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 8, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:32,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2024-10-12 18:35:32,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2024-10-12 18:35:32,549 INFO L396 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:32,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:32,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1472861892, now seen corresponding path program 48 times [2024-10-12 18:35:32,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:32,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644371704] [2024-10-12 18:35:32,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:32,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:32,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:32,871 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 156 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:32,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:32,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644371704] [2024-10-12 18:35:32,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644371704] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:35:32,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283042684] [2024-10-12 18:35:32,871 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-12 18:35:32,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:32,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:35:32,872 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:35:32,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2024-10-12 18:35:32,972 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-10-12 18:35:32,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:35:32,974 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-12 18:35:32,974 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:35:33,509 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 187 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:33,509 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:35:33,791 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 187 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:33,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283042684] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:35:33,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:35:33,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 53 [2024-10-12 18:35:33,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519259526] [2024-10-12 18:35:33,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:35:33,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-10-12 18:35:33,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:33,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-10-12 18:35:33,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=510, Invalid=2352, Unknown=0, NotChecked=0, Total=2862 [2024-10-12 18:35:33,793 INFO L87 Difference]: Start difference. First operand 78 states and 91 transitions. Second operand has 54 states, 54 states have (on average 2.0185185185185186) internal successors, (109), 53 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:35:34,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:34,152 INFO L93 Difference]: Finished difference Result 191 states and 206 transitions. [2024-10-12 18:35:34,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-10-12 18:35:34,152 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.0185185185185186) internal successors, (109), 53 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-10-12 18:35:34,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:34,153 INFO L225 Difference]: With dead ends: 191 [2024-10-12 18:35:34,153 INFO L226 Difference]: Without dead ends: 151 [2024-10-12 18:35:34,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 58 SyntacticMatches, 24 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2173 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=518, Invalid=2452, Unknown=0, NotChecked=0, Total=2970 [2024-10-12 18:35:34,153 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 9 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:35:34,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 164 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:35:34,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-10-12 18:35:34,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 78. [2024-10-12 18:35:34,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.1818181818181819) internal successors, (91), 77 states have internal predecessors, (91), 0 states have call successors, (0), 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 18:35:34,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 91 transitions. [2024-10-12 18:35:34,220 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 91 transitions. Word has length 54 [2024-10-12 18:35:34,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:34,220 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 91 transitions. [2024-10-12 18:35:34,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.0185185185185186) internal successors, (109), 53 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:35:34,220 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 91 transitions. [2024-10-12 18:35:34,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-12 18:35:34,220 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:34,220 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 7, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:34,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2024-10-12 18:35:34,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:34,421 INFO L396 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:34,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:34,421 INFO L85 PathProgramCache]: Analyzing trace with hash -709210915, now seen corresponding path program 49 times [2024-10-12 18:35:34,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:34,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825560904] [2024-10-12 18:35:34,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:34,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:34,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:34,734 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 156 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:34,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:34,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825560904] [2024-10-12 18:35:34,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825560904] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:35:34,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482651619] [2024-10-12 18:35:34,735 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-12 18:35:34,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:34,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:35:34,736 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:35:34,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2024-10-12 18:35:34,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:34,833 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-12 18:35:34,834 INFO L278 TraceCheckSpWp]: Computing forward predicates...