./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-11.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-11.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 938d0421a545f95d5fd4476ad4101c37e59d7c0d9287a6793e2d4f45bec79d41 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 11:37:04,151 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 11:37:04,213 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 11:37:04,218 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 11:37:04,218 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 11:37:04,244 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 11:37:04,245 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 11:37:04,245 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 11:37:04,246 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 11:37:04,247 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 11:37:04,248 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 11:37:04,248 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 11:37:04,248 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 11:37:04,249 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 11:37:04,249 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 11:37:04,249 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 11:37:04,251 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 11:37:04,251 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 11:37:04,251 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 11:37:04,251 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 11:37:04,251 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 11:37:04,252 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 11:37:04,252 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 11:37:04,254 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 11:37:04,254 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 11:37:04,254 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 11:37:04,255 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 11:37:04,255 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 11:37:04,255 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 11:37:04,255 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 11:37:04,255 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 11:37:04,255 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 11:37:04,256 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 11:37:04,256 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 11:37:04,256 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 11:37:04,256 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 11:37:04,256 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 11:37:04,256 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 11:37:04,257 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 11:37:04,257 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 11:37:04,258 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 11:37:04,259 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 11:37:04,259 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 938d0421a545f95d5fd4476ad4101c37e59d7c0d9287a6793e2d4f45bec79d41 [2024-11-22 11:37:04,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 11:37:04,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 11:37:04,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 11:37:04,488 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 11:37:04,488 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 11:37:04,489 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-11.i [2024-11-22 11:37:05,830 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 11:37:05,999 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 11:37:06,000 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-11.i [2024-11-22 11:37:06,011 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e3050aca/83c9afb205c14c6280f4abbc3ca1610a/FLAG2469ccaa8 [2024-11-22 11:37:06,024 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e3050aca/83c9afb205c14c6280f4abbc3ca1610a [2024-11-22 11:37:06,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 11:37:06,027 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 11:37:06,028 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 11:37:06,028 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 11:37:06,032 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 11:37:06,033 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:37:06" (1/1) ... [2024-11-22 11:37:06,033 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f063c8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:37:06, skipping insertion in model container [2024-11-22 11:37:06,033 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:37:06" (1/1) ... [2024-11-22 11:37:06,083 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 11:37:06,261 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-11.i[916,929] [2024-11-22 11:37:06,378 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 11:37:06,395 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 11:37:06,410 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-11.i[916,929] [2024-11-22 11:37:06,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 11:37:06,553 INFO L204 MainTranslator]: Completed translation [2024-11-22 11:37:06,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:37:06 WrapperNode [2024-11-22 11:37:06,553 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 11:37:06,554 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 11:37:06,554 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 11:37:06,555 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 11:37:06,561 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:37:06" (1/1) ... [2024-11-22 11:37:06,575 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:37:06" (1/1) ... [2024-11-22 11:37:06,622 INFO L138 Inliner]: procedures = 26, calls = 58, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 434 [2024-11-22 11:37:06,623 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 11:37:06,623 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 11:37:06,624 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 11:37:06,624 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 11:37:06,634 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:37:06" (1/1) ... [2024-11-22 11:37:06,637 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:37:06" (1/1) ... [2024-11-22 11:37:06,648 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:37:06" (1/1) ... [2024-11-22 11:37:06,691 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 11:37:06,691 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:37:06" (1/1) ... [2024-11-22 11:37:06,691 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:37:06" (1/1) ... [2024-11-22 11:37:06,713 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:37:06" (1/1) ... [2024-11-22 11:37:06,717 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:37:06" (1/1) ... [2024-11-22 11:37:06,725 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:37:06" (1/1) ... [2024-11-22 11:37:06,733 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:37:06" (1/1) ... [2024-11-22 11:37:06,748 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 11:37:06,752 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 11:37:06,752 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 11:37:06,752 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 11:37:06,753 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:37:06" (1/1) ... [2024-11-22 11:37:06,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 11:37:06,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:37:06,787 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 11:37:06,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 11:37:06,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 11:37:06,822 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 11:37:06,823 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 11:37:06,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 11:37:06,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 11:37:06,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 11:37:06,903 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 11:37:06,905 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 11:37:07,534 INFO L? ?]: Removed 47 outVars from TransFormulas that were not future-live. [2024-11-22 11:37:07,534 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 11:37:07,545 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 11:37:07,545 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 11:37:07,546 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:37:07 BoogieIcfgContainer [2024-11-22 11:37:07,546 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 11:37:07,547 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 11:37:07,547 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 11:37:07,550 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 11:37:07,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:37:06" (1/3) ... [2024-11-22 11:37:07,550 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f2a252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:37:07, skipping insertion in model container [2024-11-22 11:37:07,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:37:06" (2/3) ... [2024-11-22 11:37:07,551 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f2a252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:37:07, skipping insertion in model container [2024-11-22 11:37:07,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:37:07" (3/3) ... [2024-11-22 11:37:07,552 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-11.i [2024-11-22 11:37:07,564 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 11:37:07,564 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 11:37:07,616 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 11:37:07,622 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;@611e2deb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 11:37:07,622 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 11:37:07,627 INFO L276 IsEmpty]: Start isEmpty. Operand has 175 states, 127 states have (on average 1.4803149606299213) internal successors, (188), 128 states have internal predecessors, (188), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-22 11:37:07,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2024-11-22 11:37:07,640 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:37:07,641 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:37:07,641 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:37:07,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:37:07,645 INFO L85 PathProgramCache]: Analyzing trace with hash 173981492, now seen corresponding path program 1 times [2024-11-22 11:37:07,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:37:07,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344131616] [2024-11-22 11:37:07,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:37:07,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:37:07,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:37:08,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2024-11-22 11:37:08,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:37:08,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344131616] [2024-11-22 11:37:08,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344131616] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:37:08,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197009726] [2024-11-22 11:37:08,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:37:08,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:37:08,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:37:08,193 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:37:08,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 11:37:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:37:08,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 11:37:08,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:37:08,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2024-11-22 11:37:08,486 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 11:37:08,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197009726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:37:08,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 11:37:08,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 11:37:08,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379522647] [2024-11-22 11:37:08,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:37:08,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 11:37:08,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:37:08,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 11:37:08,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 11:37:08,522 INFO L87 Difference]: Start difference. First operand has 175 states, 127 states have (on average 1.4803149606299213) internal successors, (188), 128 states have internal predecessors, (188), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 2 states, 2 states have (on average 46.5) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 2 states have call successors, (45) [2024-11-22 11:37:08,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:37:08,566 INFO L93 Difference]: Finished difference Result 341 states and 593 transitions. [2024-11-22 11:37:08,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 11:37:08,569 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 46.5) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 2 states have call successors, (45) Word has length 313 [2024-11-22 11:37:08,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:37:08,576 INFO L225 Difference]: With dead ends: 341 [2024-11-22 11:37:08,576 INFO L226 Difference]: Without dead ends: 169 [2024-11-22 11:37:08,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 11:37:08,587 INFO L432 NwaCegarLoop]: 265 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:37:08,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:37:08,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-22 11:37:08,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2024-11-22 11:37:08,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 122 states have (on average 1.4344262295081966) internal successors, (175), 122 states have internal predecessors, (175), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-22 11:37:08,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 265 transitions. [2024-11-22 11:37:08,639 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 265 transitions. Word has length 313 [2024-11-22 11:37:08,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:37:08,643 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 265 transitions. [2024-11-22 11:37:08,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 46.5) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 2 states have call successors, (45) [2024-11-22 11:37:08,644 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 265 transitions. [2024-11-22 11:37:08,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2024-11-22 11:37:08,650 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:37:08,651 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:37:08,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 11:37:08,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-22 11:37:08,852 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:37:08,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:37:08,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1931232908, now seen corresponding path program 1 times [2024-11-22 11:37:08,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:37:08,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276568304] [2024-11-22 11:37:08,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:37:08,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:37:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:37:09,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-11-22 11:37:09,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:37:09,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276568304] [2024-11-22 11:37:09,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276568304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:37:09,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:37:09,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:37:09,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324833566] [2024-11-22 11:37:09,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:37:09,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:37:09,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:37:09,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:37:09,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:37:09,291 INFO L87 Difference]: Start difference. First operand 169 states and 265 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:37:09,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:37:09,515 INFO L93 Difference]: Finished difference Result 502 states and 790 transitions. [2024-11-22 11:37:09,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:37:09,515 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 313 [2024-11-22 11:37:09,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:37:09,521 INFO L225 Difference]: With dead ends: 502 [2024-11-22 11:37:09,522 INFO L226 Difference]: Without dead ends: 336 [2024-11-22 11:37:09,523 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:37:09,525 INFO L432 NwaCegarLoop]: 262 mSDtfsCounter, 207 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 11:37:09,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 777 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 11:37:09,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-11-22 11:37:09,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 327. [2024-11-22 11:37:09,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 234 states have (on average 1.4401709401709402) internal successors, (337), 234 states have internal predecessors, (337), 90 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-22 11:37:09,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 517 transitions. [2024-11-22 11:37:09,575 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 517 transitions. Word has length 313 [2024-11-22 11:37:09,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:37:09,577 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 517 transitions. [2024-11-22 11:37:09,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:37:09,577 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 517 transitions. [2024-11-22 11:37:09,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2024-11-22 11:37:09,581 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:37:09,581 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:37:09,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 11:37:09,582 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:37:09,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:37:09,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1836673002, now seen corresponding path program 1 times [2024-11-22 11:37:09,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:37:09,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776162534] [2024-11-22 11:37:09,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:37:09,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:37:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:37:09,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-11-22 11:37:09,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:37:09,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776162534] [2024-11-22 11:37:09,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776162534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:37:09,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:37:09,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 11:37:09,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029569115] [2024-11-22 11:37:09,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:37:09,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 11:37:09,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:37:09,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 11:37:09,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:37:09,783 INFO L87 Difference]: Start difference. First operand 327 states and 517 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:37:09,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:37:09,851 INFO L93 Difference]: Finished difference Result 754 states and 1192 transitions. [2024-11-22 11:37:09,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 11:37:09,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 314 [2024-11-22 11:37:09,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:37:09,855 INFO L225 Difference]: With dead ends: 754 [2024-11-22 11:37:09,855 INFO L226 Difference]: Without dead ends: 540 [2024-11-22 11:37:09,856 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:37:09,858 INFO L432 NwaCegarLoop]: 390 mSDtfsCounter, 220 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:37:09,858 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 627 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:37:09,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2024-11-22 11:37:09,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 389. [2024-11-22 11:37:09,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 296 states have (on average 1.4493243243243243) internal successors, (429), 296 states have internal predecessors, (429), 90 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-22 11:37:09,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 609 transitions. [2024-11-22 11:37:09,896 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 609 transitions. Word has length 314 [2024-11-22 11:37:09,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:37:09,897 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 609 transitions. [2024-11-22 11:37:09,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:37:09,897 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 609 transitions. [2024-11-22 11:37:09,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2024-11-22 11:37:09,900 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:37:09,900 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:37:09,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 11:37:09,901 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:37:09,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:37:09,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1105010646, now seen corresponding path program 1 times [2024-11-22 11:37:09,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:37:09,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875424940] [2024-11-22 11:37:09,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:37:09,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:37:09,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:37:10,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-11-22 11:37:10,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:37:10,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875424940] [2024-11-22 11:37:10,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875424940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:37:10,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:37:10,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:37:10,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592823392] [2024-11-22 11:37:10,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:37:10,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:37:10,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:37:10,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:37:10,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:37:10,370 INFO L87 Difference]: Start difference. First operand 389 states and 609 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:37:10,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:37:10,800 INFO L93 Difference]: Finished difference Result 1062 states and 1647 transitions. [2024-11-22 11:37:10,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:37:10,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 315 [2024-11-22 11:37:10,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:37:10,807 INFO L225 Difference]: With dead ends: 1062 [2024-11-22 11:37:10,807 INFO L226 Difference]: Without dead ends: 845 [2024-11-22 11:37:10,808 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:37:10,811 INFO L432 NwaCegarLoop]: 234 mSDtfsCounter, 376 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 11:37:10,811 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 606 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 11:37:10,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2024-11-22 11:37:10,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 604. [2024-11-22 11:37:10,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 465 states have (on average 1.4387096774193548) internal successors, (669), 465 states have internal predecessors, (669), 135 states have call successors, (135), 3 states have call predecessors, (135), 3 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-22 11:37:10,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 939 transitions. [2024-11-22 11:37:10,854 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 939 transitions. Word has length 315 [2024-11-22 11:37:10,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:37:10,857 INFO L471 AbstractCegarLoop]: Abstraction has 604 states and 939 transitions. [2024-11-22 11:37:10,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:37:10,857 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 939 transitions. [2024-11-22 11:37:10,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2024-11-22 11:37:10,860 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:37:10,861 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:37:10,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 11:37:10,861 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:37:10,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:37:10,863 INFO L85 PathProgramCache]: Analyzing trace with hash -2043135368, now seen corresponding path program 1 times [2024-11-22 11:37:10,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:37:10,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815178557] [2024-11-22 11:37:10,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:37:10,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:37:11,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:37:11,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-11-22 11:37:11,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:37:11,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815178557] [2024-11-22 11:37:11,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815178557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:37:11,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:37:11,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 11:37:11,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828012557] [2024-11-22 11:37:11,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:37:11,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 11:37:11,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:37:11,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 11:37:11,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-22 11:37:11,840 INFO L87 Difference]: Start difference. First operand 604 states and 939 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:37:12,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:37:12,622 INFO L93 Difference]: Finished difference Result 2395 states and 3680 transitions. [2024-11-22 11:37:12,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 11:37:12,623 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 315 [2024-11-22 11:37:12,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:37:12,631 INFO L225 Difference]: With dead ends: 2395 [2024-11-22 11:37:12,631 INFO L226 Difference]: Without dead ends: 1997 [2024-11-22 11:37:12,633 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2024-11-22 11:37:12,634 INFO L432 NwaCegarLoop]: 245 mSDtfsCounter, 1186 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1186 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 11:37:12,634 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1186 Valid, 989 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 11:37:12,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2024-11-22 11:37:12,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 846. [2024-11-22 11:37:12,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 704 states have (on average 1.4701704545454546) internal successors, (1035), 704 states have internal predecessors, (1035), 135 states have call successors, (135), 6 states have call predecessors, (135), 6 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-22 11:37:12,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1305 transitions. [2024-11-22 11:37:12,731 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1305 transitions. Word has length 315 [2024-11-22 11:37:12,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:37:12,732 INFO L471 AbstractCegarLoop]: Abstraction has 846 states and 1305 transitions. [2024-11-22 11:37:12,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:37:12,732 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1305 transitions. [2024-11-22 11:37:12,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2024-11-22 11:37:12,736 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:37:12,736 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:37:12,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 11:37:12,737 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:37:12,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:37:12,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1230763574, now seen corresponding path program 1 times [2024-11-22 11:37:12,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:37:12,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483537307] [2024-11-22 11:37:12,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:37:12,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:37:12,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:37:12,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-11-22 11:37:12,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:37:12,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483537307] [2024-11-22 11:37:12,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483537307] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:37:12,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:37:12,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:37:12,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378794412] [2024-11-22 11:37:12,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:37:12,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:37:12,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:37:12,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:37:12,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:37:12,956 INFO L87 Difference]: Start difference. First operand 846 states and 1305 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:37:12,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:37:12,995 INFO L93 Difference]: Finished difference Result 1393 states and 2146 transitions. [2024-11-22 11:37:12,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:37:12,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 315 [2024-11-22 11:37:12,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:37:12,999 INFO L225 Difference]: With dead ends: 1393 [2024-11-22 11:37:13,000 INFO L226 Difference]: Without dead ends: 846 [2024-11-22 11:37:13,001 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:37:13,001 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 0 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:37:13,001 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 522 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:37:13,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2024-11-22 11:37:13,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 846. [2024-11-22 11:37:13,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 704 states have (on average 1.4588068181818181) internal successors, (1027), 704 states have internal predecessors, (1027), 135 states have call successors, (135), 6 states have call predecessors, (135), 6 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-22 11:37:13,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1297 transitions. [2024-11-22 11:37:13,067 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1297 transitions. Word has length 315 [2024-11-22 11:37:13,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:37:13,068 INFO L471 AbstractCegarLoop]: Abstraction has 846 states and 1297 transitions. [2024-11-22 11:37:13,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:37:13,068 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1297 transitions. [2024-11-22 11:37:13,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2024-11-22 11:37:13,071 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:37:13,072 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:37:13,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 11:37:13,072 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:37:13,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:37:13,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1145742090, now seen corresponding path program 1 times [2024-11-22 11:37:13,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:37:13,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872073067] [2024-11-22 11:37:13,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:37:13,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:37:13,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:37:13,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-11-22 11:37:13,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:37:13,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872073067] [2024-11-22 11:37:13,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872073067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:37:13,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:37:13,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:37:13,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862380326] [2024-11-22 11:37:13,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:37:13,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:37:13,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:37:13,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:37:13,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:37:13,441 INFO L87 Difference]: Start difference. First operand 846 states and 1297 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:37:13,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:37:13,609 INFO L93 Difference]: Finished difference Result 2215 states and 3393 transitions. [2024-11-22 11:37:13,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 11:37:13,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 315 [2024-11-22 11:37:13,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:37:13,616 INFO L225 Difference]: With dead ends: 2215 [2024-11-22 11:37:13,616 INFO L226 Difference]: Without dead ends: 1593 [2024-11-22 11:37:13,617 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:37:13,618 INFO L432 NwaCegarLoop]: 261 mSDtfsCounter, 177 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 11:37:13,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 730 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 11:37:13,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1593 states. [2024-11-22 11:37:13,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1593 to 1591. [2024-11-22 11:37:13,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1591 states, 1355 states have (on average 1.4619926199261992) internal successors, (1981), 1355 states have internal predecessors, (1981), 225 states have call successors, (225), 10 states have call predecessors, (225), 10 states have return successors, (225), 225 states have call predecessors, (225), 225 states have call successors, (225) [2024-11-22 11:37:13,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 2431 transitions. [2024-11-22 11:37:13,686 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 2431 transitions. Word has length 315 [2024-11-22 11:37:13,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:37:13,687 INFO L471 AbstractCegarLoop]: Abstraction has 1591 states and 2431 transitions. [2024-11-22 11:37:13,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:37:13,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 2431 transitions. [2024-11-22 11:37:13,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2024-11-22 11:37:13,690 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:37:13,690 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:37:13,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 11:37:13,691 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:37:13,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:37:13,691 INFO L85 PathProgramCache]: Analyzing trace with hash -636269000, now seen corresponding path program 1 times [2024-11-22 11:37:13,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:37:13,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158521903] [2024-11-22 11:37:13,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:37:13,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:37:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:37:14,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-11-22 11:37:14,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:37:14,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158521903] [2024-11-22 11:37:14,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158521903] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:37:14,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:37:14,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 11:37:14,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827550657] [2024-11-22 11:37:14,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:37:14,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 11:37:14,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:37:14,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 11:37:14,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-22 11:37:14,448 INFO L87 Difference]: Start difference. First operand 1591 states and 2431 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:37:15,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:37:15,162 INFO L93 Difference]: Finished difference Result 4178 states and 6345 transitions. [2024-11-22 11:37:15,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 11:37:15,163 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 315 [2024-11-22 11:37:15,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:37:15,172 INFO L225 Difference]: With dead ends: 4178 [2024-11-22 11:37:15,172 INFO L226 Difference]: Without dead ends: 2876 [2024-11-22 11:37:15,175 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-11-22 11:37:15,175 INFO L432 NwaCegarLoop]: 279 mSDtfsCounter, 824 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 11:37:15,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 1447 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 11:37:15,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2876 states. [2024-11-22 11:37:15,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2876 to 1767. [2024-11-22 11:37:15,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1767 states, 1530 states have (on average 1.4607843137254901) internal successors, (2235), 1530 states have internal predecessors, (2235), 225 states have call successors, (225), 11 states have call predecessors, (225), 11 states have return successors, (225), 225 states have call predecessors, (225), 225 states have call successors, (225) [2024-11-22 11:37:15,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 2685 transitions. [2024-11-22 11:37:15,294 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 2685 transitions. Word has length 315 [2024-11-22 11:37:15,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:37:15,295 INFO L471 AbstractCegarLoop]: Abstraction has 1767 states and 2685 transitions. [2024-11-22 11:37:15,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:37:15,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 2685 transitions. [2024-11-22 11:37:15,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2024-11-22 11:37:15,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:37:15,299 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:37:15,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 11:37:15,299 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:37:15,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:37:15,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1630112186, now seen corresponding path program 1 times [2024-11-22 11:37:15,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:37:15,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669979953] [2024-11-22 11:37:15,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:37:15,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:37:15,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:37:16,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-11-22 11:37:16,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:37:16,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669979953] [2024-11-22 11:37:16,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669979953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:37:16,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:37:16,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 11:37:16,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618953866] [2024-11-22 11:37:16,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:37:16,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 11:37:16,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:37:16,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 11:37:16,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-22 11:37:16,443 INFO L87 Difference]: Start difference. First operand 1767 states and 2685 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:37:17,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:37:17,839 INFO L93 Difference]: Finished difference Result 6023 states and 9103 transitions. [2024-11-22 11:37:17,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 11:37:17,840 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 315 [2024-11-22 11:37:17,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:37:17,857 INFO L225 Difference]: With dead ends: 6023 [2024-11-22 11:37:17,857 INFO L226 Difference]: Without dead ends: 4957 [2024-11-22 11:37:17,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-11-22 11:37:17,861 INFO L432 NwaCegarLoop]: 418 mSDtfsCounter, 1040 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 1242 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-22 11:37:17,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1040 Valid, 1242 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-22 11:37:17,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4957 states. [2024-11-22 11:37:17,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4957 to 2039. [2024-11-22 11:37:17,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2039 states, 1802 states have (on average 1.4733629300776914) internal successors, (2655), 1802 states have internal predecessors, (2655), 225 states have call successors, (225), 11 states have call predecessors, (225), 11 states have return successors, (225), 225 states have call predecessors, (225), 225 states have call successors, (225) [2024-11-22 11:37:17,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2039 states to 2039 states and 3105 transitions. [2024-11-22 11:37:17,995 INFO L78 Accepts]: Start accepts. Automaton has 2039 states and 3105 transitions. Word has length 315 [2024-11-22 11:37:17,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:37:17,996 INFO L471 AbstractCegarLoop]: Abstraction has 2039 states and 3105 transitions. [2024-11-22 11:37:17,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:37:17,996 INFO L276 IsEmpty]: Start isEmpty. Operand 2039 states and 3105 transitions. [2024-11-22 11:37:17,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2024-11-22 11:37:17,999 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:37:17,999 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:37:18,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 11:37:18,000 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:37:18,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:37:18,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1652744440, now seen corresponding path program 1 times [2024-11-22 11:37:18,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:37:18,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641221756] [2024-11-22 11:37:18,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:37:18,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:37:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:37:18,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 6 proven. 126 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2024-11-22 11:37:18,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:37:18,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641221756] [2024-11-22 11:37:18,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641221756] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:37:18,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225326807] [2024-11-22 11:37:18,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:37:18,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:37:18,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:37:18,550 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:37:18,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 11:37:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:37:18,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 11:37:18,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:37:19,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 384 proven. 126 refuted. 0 times theorem prover too weak. 3450 trivial. 0 not checked. [2024-11-22 11:37:19,099 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:37:19,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 6 proven. 126 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2024-11-22 11:37:19,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225326807] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:37:19,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:37:19,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-22 11:37:19,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854192712] [2024-11-22 11:37:19,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:37:19,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 11:37:19,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:37:19,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 11:37:19,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-22 11:37:19,353 INFO L87 Difference]: Start difference. First operand 2039 states and 3105 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 2 states have call successors, (87), 2 states have call predecessors, (87), 4 states have return successors, (88), 2 states have call predecessors, (88), 2 states have call successors, (88) [2024-11-22 11:37:19,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:37:19,671 INFO L93 Difference]: Finished difference Result 3797 states and 5753 transitions. [2024-11-22 11:37:19,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 11:37:19,672 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 2 states have call successors, (87), 2 states have call predecessors, (87), 4 states have return successors, (88), 2 states have call predecessors, (88), 2 states have call successors, (88) Word has length 315 [2024-11-22 11:37:19,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:37:19,679 INFO L225 Difference]: With dead ends: 3797 [2024-11-22 11:37:19,680 INFO L226 Difference]: Without dead ends: 2091 [2024-11-22 11:37:19,683 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 628 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-11-22 11:37:19,683 INFO L432 NwaCegarLoop]: 204 mSDtfsCounter, 244 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 11:37:19,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 519 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 11:37:19,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2091 states. [2024-11-22 11:37:19,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2091 to 2059. [2024-11-22 11:37:19,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2059 states, 1817 states have (on average 1.4408365437534398) internal successors, (2618), 1817 states have internal predecessors, (2618), 225 states have call successors, (225), 16 states have call predecessors, (225), 16 states have return successors, (225), 225 states have call predecessors, (225), 225 states have call successors, (225) [2024-11-22 11:37:19,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2059 states to 2059 states and 3068 transitions. [2024-11-22 11:37:19,772 INFO L78 Accepts]: Start accepts. Automaton has 2059 states and 3068 transitions. Word has length 315 [2024-11-22 11:37:19,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:37:19,772 INFO L471 AbstractCegarLoop]: Abstraction has 2059 states and 3068 transitions. [2024-11-22 11:37:19,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 2 states have call successors, (87), 2 states have call predecessors, (87), 4 states have return successors, (88), 2 states have call predecessors, (88), 2 states have call successors, (88) [2024-11-22 11:37:19,773 INFO L276 IsEmpty]: Start isEmpty. Operand 2059 states and 3068 transitions. [2024-11-22 11:37:19,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-11-22 11:37:19,776 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:37:19,776 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:37:19,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 11:37:19,979 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,SelfDestructingSolverStorable9 [2024-11-22 11:37:19,980 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:37:19,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:37:19,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1087944177, now seen corresponding path program 1 times [2024-11-22 11:37:19,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:37:19,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113033308] [2024-11-22 11:37:19,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:37:19,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:37:20,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:37:20,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 111 proven. 21 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2024-11-22 11:37:20,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:37:20,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113033308] [2024-11-22 11:37:20,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113033308] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:37:20,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351662706] [2024-11-22 11:37:20,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:37:20,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:37:20,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:37:20,591 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:37:20,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 11:37:20,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:37:20,804 INFO L255 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 11:37:20,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:37:21,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1952 proven. 78 refuted. 0 times theorem prover too weak. 1930 trivial. 0 not checked. [2024-11-22 11:37:21,183 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:37:21,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 54 proven. 78 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2024-11-22 11:37:21,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351662706] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:37:21,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:37:21,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 16 [2024-11-22 11:37:21,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280027538] [2024-11-22 11:37:21,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:37:21,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 11:37:21,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:37:21,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 11:37:21,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-11-22 11:37:21,712 INFO L87 Difference]: Start difference. First operand 2059 states and 3068 transitions. Second operand has 16 states, 16 states have (on average 12.875) internal successors, (206), 16 states have internal predecessors, (206), 4 states have call successors, (97), 2 states have call predecessors, (97), 4 states have return successors, (99), 4 states have call predecessors, (99), 4 states have call successors, (99) [2024-11-22 11:37:23,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:37:23,747 INFO L93 Difference]: Finished difference Result 7281 states and 10897 transitions. [2024-11-22 11:37:23,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-22 11:37:23,748 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.875) internal successors, (206), 16 states have internal predecessors, (206), 4 states have call successors, (97), 2 states have call predecessors, (97), 4 states have return successors, (99), 4 states have call predecessors, (99), 4 states have call successors, (99) Word has length 317 [2024-11-22 11:37:23,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:37:23,763 INFO L225 Difference]: With dead ends: 7281 [2024-11-22 11:37:23,764 INFO L226 Difference]: Without dead ends: 5351 [2024-11-22 11:37:23,769 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 631 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=610, Invalid=2146, Unknown=0, NotChecked=0, Total=2756 [2024-11-22 11:37:23,770 INFO L432 NwaCegarLoop]: 416 mSDtfsCounter, 1486 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 1836 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1842 SdHoareTripleChecker+Invalid, 2230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 1836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-22 11:37:23,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1842 Invalid, 2230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [394 Valid, 1836 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-22 11:37:23,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5351 states. [2024-11-22 11:37:23,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5351 to 4289. [2024-11-22 11:37:23,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4289 states, 3954 states have (on average 1.4382903388973192) internal successors, (5687), 3956 states have internal predecessors, (5687), 299 states have call successors, (299), 35 states have call predecessors, (299), 35 states have return successors, (299), 297 states have call predecessors, (299), 299 states have call successors, (299) [2024-11-22 11:37:23,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4289 states to 4289 states and 6285 transitions. [2024-11-22 11:37:23,957 INFO L78 Accepts]: Start accepts. Automaton has 4289 states and 6285 transitions. Word has length 317 [2024-11-22 11:37:23,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:37:23,957 INFO L471 AbstractCegarLoop]: Abstraction has 4289 states and 6285 transitions. [2024-11-22 11:37:23,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.875) internal successors, (206), 16 states have internal predecessors, (206), 4 states have call successors, (97), 2 states have call predecessors, (97), 4 states have return successors, (99), 4 states have call predecessors, (99), 4 states have call successors, (99) [2024-11-22 11:37:23,958 INFO L276 IsEmpty]: Start isEmpty. Operand 4289 states and 6285 transitions. [2024-11-22 11:37:23,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2024-11-22 11:37:23,961 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:37:23,962 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:37:23,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 11:37:24,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:37:24,166 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:37:24,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:37:24,167 INFO L85 PathProgramCache]: Analyzing trace with hash -748416575, now seen corresponding path program 1 times [2024-11-22 11:37:24,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:37:24,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516954581] [2024-11-22 11:37:24,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:37:24,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:37:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:37:25,065 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 54 proven. 78 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2024-11-22 11:37:25,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:37:25,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516954581] [2024-11-22 11:37:25,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516954581] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:37:25,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200739884] [2024-11-22 11:37:25,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:37:25,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:37:25,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:37:25,070 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:37:25,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 11:37:25,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:37:25,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-22 11:37:25,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:37:29,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1950 proven. 375 refuted. 0 times theorem prover too weak. 1635 trivial. 0 not checked. [2024-11-22 11:37:29,567 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:37:31,033 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 54 proven. 78 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2024-11-22 11:37:31,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200739884] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:37:31,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:37:31,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 22, 13] total 40 [2024-11-22 11:37:31,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186147599] [2024-11-22 11:37:31,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:37:31,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-22 11:37:31,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:37:31,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-22 11:37:31,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=1229, Unknown=0, NotChecked=0, Total=1560 [2024-11-22 11:37:31,037 INFO L87 Difference]: Start difference. First operand 4289 states and 6285 transitions. Second operand has 40 states, 40 states have (on average 6.725) internal successors, (269), 38 states have internal predecessors, (269), 9 states have call successors, (116), 7 states have call predecessors, (116), 10 states have return successors, (117), 9 states have call predecessors, (117), 9 states have call successors, (117) [2024-11-22 11:37:37,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:37:37,028 INFO L93 Difference]: Finished difference Result 13101 states and 19077 transitions. [2024-11-22 11:37:37,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-22 11:37:37,029 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 6.725) internal successors, (269), 38 states have internal predecessors, (269), 9 states have call successors, (116), 7 states have call predecessors, (116), 10 states have return successors, (117), 9 states have call predecessors, (117), 9 states have call successors, (117) Word has length 318 [2024-11-22 11:37:37,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:37:37,055 INFO L225 Difference]: With dead ends: 13101 [2024-11-22 11:37:37,055 INFO L226 Difference]: Without dead ends: 9167 [2024-11-22 11:37:37,064 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 716 GetRequests, 610 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3917 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2194, Invalid=9362, Unknown=0, NotChecked=0, Total=11556 [2024-11-22 11:37:37,064 INFO L432 NwaCegarLoop]: 297 mSDtfsCounter, 2760 mSDsluCounter, 2820 mSDsCounter, 0 mSdLazyCounter, 3885 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2761 SdHoareTripleChecker+Valid, 3117 SdHoareTripleChecker+Invalid, 4763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 3885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-22 11:37:37,065 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2761 Valid, 3117 Invalid, 4763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 3885 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-22 11:37:37,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9167 states. [2024-11-22 11:37:37,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9167 to 4723. [2024-11-22 11:37:37,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4723 states, 4163 states have (on average 1.3850588517895748) internal successors, (5766), 4177 states have internal predecessors, (5766), 491 states have call successors, (491), 68 states have call predecessors, (491), 68 states have return successors, (491), 477 states have call predecessors, (491), 491 states have call successors, (491) [2024-11-22 11:37:37,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4723 states to 4723 states and 6748 transitions. [2024-11-22 11:37:37,409 INFO L78 Accepts]: Start accepts. Automaton has 4723 states and 6748 transitions. Word has length 318 [2024-11-22 11:37:37,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:37:37,409 INFO L471 AbstractCegarLoop]: Abstraction has 4723 states and 6748 transitions. [2024-11-22 11:37:37,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 6.725) internal successors, (269), 38 states have internal predecessors, (269), 9 states have call successors, (116), 7 states have call predecessors, (116), 10 states have return successors, (117), 9 states have call predecessors, (117), 9 states have call successors, (117) [2024-11-22 11:37:37,413 INFO L276 IsEmpty]: Start isEmpty. Operand 4723 states and 6748 transitions. [2024-11-22 11:37:37,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2024-11-22 11:37:37,420 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:37:37,421 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:37:37,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 11:37:37,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:37:37,625 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:37:37,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:37:37,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1535150504, now seen corresponding path program 1 times [2024-11-22 11:37:37,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:37:37,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219950041] [2024-11-22 11:37:37,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:37:37,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:37:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:37:37,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-11-22 11:37:37,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:37:37,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219950041] [2024-11-22 11:37:37,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219950041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:37:37,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:37:37,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:37:37,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078647391] [2024-11-22 11:37:37,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:37:37,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:37:37,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:37:37,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:37:37,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:37:37,850 INFO L87 Difference]: Start difference. First operand 4723 states and 6748 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:37:38,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:37:38,663 INFO L93 Difference]: Finished difference Result 11977 states and 17078 transitions. [2024-11-22 11:37:38,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:37:38,663 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 319 [2024-11-22 11:37:38,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:37:38,690 INFO L225 Difference]: With dead ends: 11977 [2024-11-22 11:37:38,691 INFO L226 Difference]: Without dead ends: 8111 [2024-11-22 11:37:38,697 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:37:38,698 INFO L432 NwaCegarLoop]: 391 mSDtfsCounter, 246 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 11:37:38,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 866 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 11:37:38,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8111 states. [2024-11-22 11:37:39,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8111 to 4873. [2024-11-22 11:37:39,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4873 states, 4313 states have (on average 1.382796197542314) internal successors, (5964), 4327 states have internal predecessors, (5964), 491 states have call successors, (491), 68 states have call predecessors, (491), 68 states have return successors, (491), 477 states have call predecessors, (491), 491 states have call successors, (491) [2024-11-22 11:37:39,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4873 states to 4873 states and 6946 transitions. [2024-11-22 11:37:39,082 INFO L78 Accepts]: Start accepts. Automaton has 4873 states and 6946 transitions. Word has length 319 [2024-11-22 11:37:39,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:37:39,083 INFO L471 AbstractCegarLoop]: Abstraction has 4873 states and 6946 transitions. [2024-11-22 11:37:39,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:37:39,083 INFO L276 IsEmpty]: Start isEmpty. Operand 4873 states and 6946 transitions. [2024-11-22 11:37:39,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2024-11-22 11:37:39,088 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:37:39,088 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:37:39,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 11:37:39,088 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:37:39,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:37:39,089 INFO L85 PathProgramCache]: Analyzing trace with hash -393122198, now seen corresponding path program 1 times [2024-11-22 11:37:39,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:37:39,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922079841] [2024-11-22 11:37:39,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:37:39,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:37:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:37:39,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-11-22 11:37:39,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:37:39,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922079841] [2024-11-22 11:37:39,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922079841] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:37:39,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:37:39,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:37:39,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110569397] [2024-11-22 11:37:39,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:37:39,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:37:39,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:37:39,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:37:39,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:37:39,553 INFO L87 Difference]: Start difference. First operand 4873 states and 6946 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:37:40,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:37:40,434 INFO L93 Difference]: Finished difference Result 11357 states and 16082 transitions. [2024-11-22 11:37:40,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 11:37:40,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 319 [2024-11-22 11:37:40,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:37:40,450 INFO L225 Difference]: With dead ends: 11357 [2024-11-22 11:37:40,450 INFO L226 Difference]: Without dead ends: 8141 [2024-11-22 11:37:40,455 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:37:40,455 INFO L432 NwaCegarLoop]: 252 mSDtfsCounter, 328 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 11:37:40,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 626 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 11:37:40,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8141 states. [2024-11-22 11:37:40,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8141 to 6289. [2024-11-22 11:37:40,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6289 states, 5729 states have (on average 1.393611450514924) internal successors, (7984), 5743 states have internal predecessors, (7984), 491 states have call successors, (491), 68 states have call predecessors, (491), 68 states have return successors, (491), 477 states have call predecessors, (491), 491 states have call successors, (491) [2024-11-22 11:37:40,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6289 states to 6289 states and 8966 transitions. [2024-11-22 11:37:40,788 INFO L78 Accepts]: Start accepts. Automaton has 6289 states and 8966 transitions. Word has length 319 [2024-11-22 11:37:40,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:37:40,789 INFO L471 AbstractCegarLoop]: Abstraction has 6289 states and 8966 transitions. [2024-11-22 11:37:40,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:37:40,790 INFO L276 IsEmpty]: Start isEmpty. Operand 6289 states and 8966 transitions. [2024-11-22 11:37:40,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2024-11-22 11:37:40,796 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:37:40,796 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:37:40,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 11:37:40,796 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:37:40,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:37:40,796 INFO L85 PathProgramCache]: Analyzing trace with hash -118362584, now seen corresponding path program 1 times [2024-11-22 11:37:40,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:37:40,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635701449] [2024-11-22 11:37:40,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:37:40,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:37:40,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:37:41,253 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-11-22 11:37:41,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:37:41,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635701449] [2024-11-22 11:37:41,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635701449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:37:41,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:37:41,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:37:41,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860336187] [2024-11-22 11:37:41,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:37:41,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:37:41,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:37:41,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:37:41,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:37:41,256 INFO L87 Difference]: Start difference. First operand 6289 states and 8966 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:37:42,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:37:42,281 INFO L93 Difference]: Finished difference Result 16591 states and 23717 transitions. [2024-11-22 11:37:42,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:37:42,281 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 319 [2024-11-22 11:37:42,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:37:42,304 INFO L225 Difference]: With dead ends: 16591 [2024-11-22 11:37:42,305 INFO L226 Difference]: Without dead ends: 12923 [2024-11-22 11:37:42,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:37:42,312 INFO L432 NwaCegarLoop]: 370 mSDtfsCounter, 487 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 11:37:42,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 677 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 11:37:42,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12923 states. [2024-11-22 11:37:42,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12923 to 8401. [2024-11-22 11:37:42,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8401 states, 7841 states have (on average 1.3855375589848233) internal successors, (10864), 7855 states have internal predecessors, (10864), 491 states have call successors, (491), 68 states have call predecessors, (491), 68 states have return successors, (491), 477 states have call predecessors, (491), 491 states have call successors, (491) [2024-11-22 11:37:42,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8401 states to 8401 states and 11846 transitions. [2024-11-22 11:37:42,728 INFO L78 Accepts]: Start accepts. Automaton has 8401 states and 11846 transitions. Word has length 319 [2024-11-22 11:37:42,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:37:42,729 INFO L471 AbstractCegarLoop]: Abstraction has 8401 states and 11846 transitions. [2024-11-22 11:37:42,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:37:42,729 INFO L276 IsEmpty]: Start isEmpty. Operand 8401 states and 11846 transitions. [2024-11-22 11:37:42,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2024-11-22 11:37:42,736 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:37:42,736 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:37:42,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 11:37:42,737 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:37:42,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:37:42,737 INFO L85 PathProgramCache]: Analyzing trace with hash -705168598, now seen corresponding path program 1 times [2024-11-22 11:37:42,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:37:42,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770086727] [2024-11-22 11:37:42,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:37:42,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:37:42,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:37:44,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 48 proven. 84 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2024-11-22 11:37:44,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:37:44,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770086727] [2024-11-22 11:37:44,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770086727] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:37:44,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064520588] [2024-11-22 11:37:44,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:37:44,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:37:44,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:37:44,186 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:37:44,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 11:37:44,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:37:44,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-22 11:37:44,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:37:45,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1845 proven. 168 refuted. 0 times theorem prover too weak. 1947 trivial. 0 not checked. [2024-11-22 11:37:45,764 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:37:46,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 48 proven. 84 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2024-11-22 11:37:46,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064520588] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:37:46,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:37:46,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 32 [2024-11-22 11:37:46,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142354924] [2024-11-22 11:37:46,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:37:46,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-22 11:37:46,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:37:46,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-22 11:37:46,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=838, Unknown=0, NotChecked=0, Total=992 [2024-11-22 11:37:46,838 INFO L87 Difference]: Start difference. First operand 8401 states and 11846 transitions. Second operand has 32 states, 32 states have (on average 7.0) internal successors, (224), 32 states have internal predecessors, (224), 8 states have call successors, (135), 4 states have call predecessors, (135), 7 states have return successors, (135), 8 states have call predecessors, (135), 8 states have call successors, (135) [2024-11-22 11:38:00,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:38:00,223 INFO L93 Difference]: Finished difference Result 47667 states and 67167 transitions. [2024-11-22 11:38:00,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2024-11-22 11:38:00,223 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.0) internal successors, (224), 32 states have internal predecessors, (224), 8 states have call successors, (135), 4 states have call predecessors, (135), 7 states have return successors, (135), 8 states have call predecessors, (135), 8 states have call successors, (135) Word has length 319 [2024-11-22 11:38:00,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:38:00,331 INFO L225 Difference]: With dead ends: 47667 [2024-11-22 11:38:00,332 INFO L226 Difference]: Without dead ends: 42847 [2024-11-22 11:38:00,346 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 802 GetRequests, 644 SyntacticMatches, 1 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9953 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=4000, Invalid=21122, Unknown=0, NotChecked=0, Total=25122 [2024-11-22 11:38:00,347 INFO L432 NwaCegarLoop]: 346 mSDtfsCounter, 5557 mSDsluCounter, 5397 mSDsCounter, 0 mSdLazyCounter, 6662 mSolverCounterSat, 2290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5632 SdHoareTripleChecker+Valid, 5743 SdHoareTripleChecker+Invalid, 8952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2290 IncrementalHoareTripleChecker+Valid, 6662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-22 11:38:00,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5632 Valid, 5743 Invalid, 8952 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2290 Valid, 6662 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-22 11:38:00,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42847 states. [2024-11-22 11:38:01,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42847 to 16889. [2024-11-22 11:38:01,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16889 states, 15471 states have (on average 1.385560080149958) internal successors, (21436), 15517 states have internal predecessors, (21436), 1237 states have call successors, (1237), 180 states have call predecessors, (1237), 180 states have return successors, (1237), 1191 states have call predecessors, (1237), 1237 states have call successors, (1237) [2024-11-22 11:38:01,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16889 states to 16889 states and 23910 transitions. [2024-11-22 11:38:01,741 INFO L78 Accepts]: Start accepts. Automaton has 16889 states and 23910 transitions. Word has length 319 [2024-11-22 11:38:01,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:38:01,742 INFO L471 AbstractCegarLoop]: Abstraction has 16889 states and 23910 transitions. [2024-11-22 11:38:01,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.0) internal successors, (224), 32 states have internal predecessors, (224), 8 states have call successors, (135), 4 states have call predecessors, (135), 7 states have return successors, (135), 8 states have call predecessors, (135), 8 states have call successors, (135) [2024-11-22 11:38:01,743 INFO L276 IsEmpty]: Start isEmpty. Operand 16889 states and 23910 transitions. [2024-11-22 11:38:01,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2024-11-22 11:38:01,752 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:38:01,752 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:38:01,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-22 11:38:01,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-22 11:38:01,957 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:38:01,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:38:01,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1547607293, now seen corresponding path program 1 times [2024-11-22 11:38:01,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:38:01,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856152183] [2024-11-22 11:38:01,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:38:01,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:38:02,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:38:02,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-11-22 11:38:02,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:38:02,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856152183] [2024-11-22 11:38:02,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856152183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:38:02,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:38:02,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 11:38:02,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090130377] [2024-11-22 11:38:02,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:38:02,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 11:38:02,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:38:02,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 11:38:02,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:38:02,207 INFO L87 Difference]: Start difference. First operand 16889 states and 23910 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:38:03,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:38:03,480 INFO L93 Difference]: Finished difference Result 27769 states and 39237 transitions. [2024-11-22 11:38:03,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 11:38:03,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 320 [2024-11-22 11:38:03,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:38:03,514 INFO L225 Difference]: With dead ends: 27769 [2024-11-22 11:38:03,515 INFO L226 Difference]: Without dead ends: 16889 [2024-11-22 11:38:03,529 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:38:03,529 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 0 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 11:38:03,529 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 467 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 11:38:03,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16889 states. [2024-11-22 11:38:04,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16889 to 15617. [2024-11-22 11:38:04,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15617 states, 14199 states have (on average 1.3744629903514332) internal successors, (19516), 14245 states have internal predecessors, (19516), 1237 states have call successors, (1237), 180 states have call predecessors, (1237), 180 states have return successors, (1237), 1191 states have call predecessors, (1237), 1237 states have call successors, (1237) [2024-11-22 11:38:04,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15617 states to 15617 states and 21990 transitions. [2024-11-22 11:38:04,884 INFO L78 Accepts]: Start accepts. Automaton has 15617 states and 21990 transitions. Word has length 320 [2024-11-22 11:38:04,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:38:04,884 INFO L471 AbstractCegarLoop]: Abstraction has 15617 states and 21990 transitions. [2024-11-22 11:38:04,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:38:04,885 INFO L276 IsEmpty]: Start isEmpty. Operand 15617 states and 21990 transitions. [2024-11-22 11:38:04,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2024-11-22 11:38:04,893 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:38:04,893 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:38:04,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 11:38:04,894 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:38:04,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:38:04,894 INFO L85 PathProgramCache]: Analyzing trace with hash 960801279, now seen corresponding path program 1 times [2024-11-22 11:38:04,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:38:04,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138112565] [2024-11-22 11:38:04,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:38:04,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:38:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:38:05,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-11-22 11:38:05,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:38:05,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138112565] [2024-11-22 11:38:05,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138112565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:38:05,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:38:05,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 11:38:05,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379804390] [2024-11-22 11:38:05,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:38:05,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 11:38:05,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:38:05,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 11:38:05,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:38:05,388 INFO L87 Difference]: Start difference. First operand 15617 states and 21990 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:38:07,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:38:07,364 INFO L93 Difference]: Finished difference Result 34957 states and 49034 transitions. [2024-11-22 11:38:07,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 11:38:07,365 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 320 [2024-11-22 11:38:07,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:38:07,409 INFO L225 Difference]: With dead ends: 34957 [2024-11-22 11:38:07,410 INFO L226 Difference]: Without dead ends: 23409 [2024-11-22 11:38:07,431 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:38:07,431 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 310 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 11:38:07,432 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 673 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 11:38:07,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23409 states. [2024-11-22 11:38:08,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23409 to 15661. [2024-11-22 11:38:08,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15661 states, 14243 states have (on average 1.3714807273748508) internal successors, (19534), 14289 states have internal predecessors, (19534), 1237 states have call successors, (1237), 180 states have call predecessors, (1237), 180 states have return successors, (1237), 1191 states have call predecessors, (1237), 1237 states have call successors, (1237) [2024-11-22 11:38:08,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15661 states to 15661 states and 22008 transitions. [2024-11-22 11:38:08,871 INFO L78 Accepts]: Start accepts. Automaton has 15661 states and 22008 transitions. Word has length 320 [2024-11-22 11:38:08,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:38:08,871 INFO L471 AbstractCegarLoop]: Abstraction has 15661 states and 22008 transitions. [2024-11-22 11:38:08,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:38:08,872 INFO L276 IsEmpty]: Start isEmpty. Operand 15661 states and 22008 transitions. [2024-11-22 11:38:08,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2024-11-22 11:38:08,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:38:08,881 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:38:08,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-22 11:38:08,881 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:38:08,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:38:08,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1313889661, now seen corresponding path program 1 times [2024-11-22 11:38:08,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:38:08,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579667654] [2024-11-22 11:38:08,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:38:08,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:38:09,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:38:14,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-11-22 11:38:14,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:38:14,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579667654] [2024-11-22 11:38:14,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579667654] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:38:14,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:38:14,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 11:38:14,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930113462] [2024-11-22 11:38:14,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:38:14,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 11:38:14,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:38:14,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 11:38:14,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-22 11:38:14,012 INFO L87 Difference]: Start difference. First operand 15661 states and 22008 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:38:15,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:38:15,707 INFO L93 Difference]: Finished difference Result 27847 states and 38938 transitions. [2024-11-22 11:38:15,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 11:38:15,708 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 320 [2024-11-22 11:38:15,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:38:15,741 INFO L225 Difference]: With dead ends: 27847 [2024-11-22 11:38:15,742 INFO L226 Difference]: Without dead ends: 18091 [2024-11-22 11:38:15,758 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-22 11:38:15,759 INFO L432 NwaCegarLoop]: 246 mSDtfsCounter, 466 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 11:38:15,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 1210 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 11:38:15,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18091 states. [2024-11-22 11:38:16,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18091 to 17281. [2024-11-22 11:38:16,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17281 states, 15863 states have (on average 1.373258526129988) internal successors, (21784), 15909 states have internal predecessors, (21784), 1237 states have call successors, (1237), 180 states have call predecessors, (1237), 180 states have return successors, (1237), 1191 states have call predecessors, (1237), 1237 states have call successors, (1237) [2024-11-22 11:38:16,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17281 states to 17281 states and 24258 transitions. [2024-11-22 11:38:16,995 INFO L78 Accepts]: Start accepts. Automaton has 17281 states and 24258 transitions. Word has length 320 [2024-11-22 11:38:16,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:38:16,995 INFO L471 AbstractCegarLoop]: Abstraction has 17281 states and 24258 transitions. [2024-11-22 11:38:16,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:38:16,996 INFO L276 IsEmpty]: Start isEmpty. Operand 17281 states and 24258 transitions. [2024-11-22 11:38:17,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2024-11-22 11:38:17,007 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:38:17,007 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:38:17,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 11:38:17,007 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:38:17,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:38:17,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1588649275, now seen corresponding path program 1 times [2024-11-22 11:38:17,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:38:17,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756446978] [2024-11-22 11:38:17,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:38:17,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:38:17,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat