./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-44.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-44.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 2cb491f7f9545a6adbf1064efa3c5a7ac2d13ac5b757e6b82f3ae15070d0ceda --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 11:41:05,873 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 11:41:05,950 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 11:41:05,956 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 11:41:05,957 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 11:41:05,984 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 11:41:05,985 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 11:41:05,985 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 11:41:05,986 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 11:41:05,991 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 11:41:05,991 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 11:41:05,991 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 11:41:05,992 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 11:41:05,992 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 11:41:05,992 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 11:41:05,993 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 11:41:05,993 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 11:41:05,993 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 11:41:05,993 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 11:41:05,994 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 11:41:05,994 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 11:41:05,996 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 11:41:05,996 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 11:41:05,996 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 11:41:05,997 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 11:41:05,997 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 11:41:05,997 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 11:41:05,997 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 11:41:05,997 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 11:41:05,998 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 11:41:05,998 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 11:41:05,998 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 11:41:05,998 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 11:41:05,999 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 11:41:05,999 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 11:41:05,999 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 11:41:06,001 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 11:41:06,001 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 11:41:06,002 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 11:41:06,002 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 11:41:06,002 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 11:41:06,003 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 11:41:06,003 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2cb491f7f9545a6adbf1064efa3c5a7ac2d13ac5b757e6b82f3ae15070d0ceda [2024-11-22 11:41:06,223 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 11:41:06,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 11:41:06,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 11:41:06,253 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 11:41:06,253 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 11:41:06,254 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-44.i [2024-11-22 11:41:07,737 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 11:41:07,965 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 11:41:07,966 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-44.i [2024-11-22 11:41:07,977 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20ddbfbdd/e544bb423bab467988e3cd4482b1bc44/FLAGabd1bcd14 [2024-11-22 11:41:08,314 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20ddbfbdd/e544bb423bab467988e3cd4482b1bc44 [2024-11-22 11:41:08,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 11:41:08,318 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 11:41:08,319 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 11:41:08,319 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 11:41:08,325 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 11:41:08,325 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:41:08" (1/1) ... [2024-11-22 11:41:08,326 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2628c1aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:41:08, skipping insertion in model container [2024-11-22 11:41:08,326 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:41:08" (1/1) ... [2024-11-22 11:41:08,374 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 11:41:08,564 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-44.i[916,929] [2024-11-22 11:41:08,691 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 11:41:08,705 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 11:41:08,717 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-44.i[916,929] [2024-11-22 11:41:08,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 11:41:08,837 INFO L204 MainTranslator]: Completed translation [2024-11-22 11:41:08,837 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:41:08 WrapperNode [2024-11-22 11:41:08,837 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 11:41:08,839 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 11:41:08,840 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 11:41:08,840 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 11:41:08,847 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:41:08" (1/1) ... [2024-11-22 11:41:08,870 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:41:08" (1/1) ... [2024-11-22 11:41:08,926 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 523 [2024-11-22 11:41:08,926 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 11:41:08,927 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 11:41:08,927 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 11:41:08,928 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 11:41:08,939 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:41:08" (1/1) ... [2024-11-22 11:41:08,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:41:08" (1/1) ... [2024-11-22 11:41:08,947 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:41:08" (1/1) ... [2024-11-22 11:41:08,992 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 11:41:08,996 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:41:08" (1/1) ... [2024-11-22 11:41:08,996 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:41:08" (1/1) ... [2024-11-22 11:41:09,025 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:41:08" (1/1) ... [2024-11-22 11:41:09,034 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:41:08" (1/1) ... [2024-11-22 11:41:09,042 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:41:08" (1/1) ... [2024-11-22 11:41:09,048 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:41:08" (1/1) ... [2024-11-22 11:41:09,067 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 11:41:09,070 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 11:41:09,070 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 11:41:09,070 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 11:41:09,071 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:41:08" (1/1) ... [2024-11-22 11:41:09,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 11:41:09,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:41:09,102 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 11:41:09,104 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 11:41:09,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 11:41:09,136 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 11:41:09,136 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 11:41:09,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 11:41:09,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 11:41:09,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 11:41:09,225 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 11:41:09,226 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 11:41:10,055 INFO L? ?]: Removed 67 outVars from TransFormulas that were not future-live. [2024-11-22 11:41:10,056 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 11:41:10,073 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 11:41:10,074 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 11:41:10,074 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:41:10 BoogieIcfgContainer [2024-11-22 11:41:10,074 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 11:41:10,079 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 11:41:10,079 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 11:41:10,082 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 11:41:10,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:41:08" (1/3) ... [2024-11-22 11:41:10,083 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10bd084f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:41:10, skipping insertion in model container [2024-11-22 11:41:10,084 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:41:08" (2/3) ... [2024-11-22 11:41:10,084 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10bd084f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:41:10, skipping insertion in model container [2024-11-22 11:41:10,084 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:41:10" (3/3) ... [2024-11-22 11:41:10,086 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-44.i [2024-11-22 11:41:10,101 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 11:41:10,101 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 11:41:10,160 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 11:41:10,166 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;@557ed4c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 11:41:10,166 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 11:41:10,173 INFO L276 IsEmpty]: Start isEmpty. Operand has 215 states, 168 states have (on average 1.5178571428571428) internal successors, (255), 169 states have internal predecessors, (255), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-22 11:41:10,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-22 11:41:10,223 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:41:10,224 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:41:10,224 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:41:10,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:41:10,237 INFO L85 PathProgramCache]: Analyzing trace with hash -286984658, now seen corresponding path program 1 times [2024-11-22 11:41:10,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:41:10,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731471973] [2024-11-22 11:41:10,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:41:10,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:41:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:41:10,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2024-11-22 11:41:10,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:41:10,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731471973] [2024-11-22 11:41:10,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731471973] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:41:10,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164438960] [2024-11-22 11:41:10,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:41:10,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:41:10,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:41:10,761 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 11:41:10,763 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 11:41:11,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:41:11,026 INFO L255 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 11:41:11,042 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:41:11,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2024-11-22 11:41:11,100 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 11:41:11,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164438960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:41:11,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 11:41:11,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 11:41:11,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119423473] [2024-11-22 11:41:11,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:41:11,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 11:41:11,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:41:11,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 11:41:11,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 11:41:11,144 INFO L87 Difference]: Start difference. First operand has 215 states, 168 states have (on average 1.5178571428571428) internal successors, (255), 169 states have internal predecessors, (255), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) [2024-11-22 11:41:11,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:41:11,206 INFO L93 Difference]: Finished difference Result 419 states and 718 transitions. [2024-11-22 11:41:11,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 11:41:11,208 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) Word has length 299 [2024-11-22 11:41:11,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:41:11,219 INFO L225 Difference]: With dead ends: 419 [2024-11-22 11:41:11,219 INFO L226 Difference]: Without dead ends: 207 [2024-11-22 11:41:11,225 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 300 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 11:41:11,229 INFO L432 NwaCegarLoop]: 329 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, 329 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 11:41:11,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:41:11,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-22 11:41:11,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2024-11-22 11:41:11,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 161 states have (on average 1.4968944099378882) internal successors, (241), 161 states have internal predecessors, (241), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-22 11:41:11,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 329 transitions. [2024-11-22 11:41:11,298 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 329 transitions. Word has length 299 [2024-11-22 11:41:11,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:41:11,302 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 329 transitions. [2024-11-22 11:41:11,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) [2024-11-22 11:41:11,303 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 329 transitions. [2024-11-22 11:41:11,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-22 11:41:11,309 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:41:11,309 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:41:11,318 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 11:41:11,510 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 11:41:11,511 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:41:11,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:41:11,511 INFO L85 PathProgramCache]: Analyzing trace with hash 321223282, now seen corresponding path program 1 times [2024-11-22 11:41:11,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:41:11,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387638370] [2024-11-22 11:41:11,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:41:11,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:41:11,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:41:11,831 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-22 11:41:11,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:41:11,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387638370] [2024-11-22 11:41:11,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387638370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:41:11,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:41:11,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 11:41:11,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048462272] [2024-11-22 11:41:11,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:41:11,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 11:41:11,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:41:11,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 11:41:11,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:41:11,835 INFO L87 Difference]: Start difference. First operand 207 states and 329 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 11:41:11,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:41:11,957 INFO L93 Difference]: Finished difference Result 522 states and 828 transitions. [2024-11-22 11:41:11,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 11:41:11,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 299 [2024-11-22 11:41:11,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:41:11,963 INFO L225 Difference]: With dead ends: 522 [2024-11-22 11:41:11,963 INFO L226 Difference]: Without dead ends: 318 [2024-11-22 11:41:11,964 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 11:41:11,965 INFO L432 NwaCegarLoop]: 463 mSDtfsCounter, 183 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 11:41:11,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 748 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 11:41:11,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-22 11:41:12,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 315. [2024-11-22 11:41:12,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 264 states have (on average 1.518939393939394) internal successors, (401), 265 states have internal predecessors, (401), 48 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-22 11:41:12,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 497 transitions. [2024-11-22 11:41:12,008 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 497 transitions. Word has length 299 [2024-11-22 11:41:12,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:41:12,010 INFO L471 AbstractCegarLoop]: Abstraction has 315 states and 497 transitions. [2024-11-22 11:41:12,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 11:41:12,011 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 497 transitions. [2024-11-22 11:41:12,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-22 11:41:12,018 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:41:12,018 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:41:12,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 11:41:12,019 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:41:12,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:41:12,019 INFO L85 PathProgramCache]: Analyzing trace with hash 980754804, now seen corresponding path program 1 times [2024-11-22 11:41:12,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:41:12,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348929395] [2024-11-22 11:41:12,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:41:12,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:41:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:41:12,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-22 11:41:12,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:41:12,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348929395] [2024-11-22 11:41:12,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348929395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:41:12,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:41:12,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 11:41:12,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692288579] [2024-11-22 11:41:12,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:41:12,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 11:41:12,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:41:12,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 11:41:12,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:41:12,485 INFO L87 Difference]: Start difference. First operand 315 states and 497 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 11:41:12,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:41:12,799 INFO L93 Difference]: Finished difference Result 930 states and 1473 transitions. [2024-11-22 11:41:12,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:41:12,803 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 299 [2024-11-22 11:41:12,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:41:12,811 INFO L225 Difference]: With dead ends: 930 [2024-11-22 11:41:12,811 INFO L226 Difference]: Without dead ends: 618 [2024-11-22 11:41:12,812 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-22 11:41:12,815 INFO L432 NwaCegarLoop]: 326 mSDtfsCounter, 242 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 11:41:12,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 1274 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 11:41:12,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2024-11-22 11:41:12,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 398. [2024-11-22 11:41:12,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 302 states have (on average 1.4701986754966887) internal successors, (444), 303 states have internal predecessors, (444), 92 states have call successors, (92), 3 states have call predecessors, (92), 3 states have return successors, (92), 91 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-22 11:41:12,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 628 transitions. [2024-11-22 11:41:12,886 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 628 transitions. Word has length 299 [2024-11-22 11:41:12,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:41:12,889 INFO L471 AbstractCegarLoop]: Abstraction has 398 states and 628 transitions. [2024-11-22 11:41:12,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 11:41:12,889 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 628 transitions. [2024-11-22 11:41:12,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-22 11:41:12,894 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:41:12,895 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:41:12,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 11:41:12,895 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:41:12,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:41:12,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1068633038, now seen corresponding path program 1 times [2024-11-22 11:41:12,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:41:12,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768633452] [2024-11-22 11:41:12,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:41:12,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:41:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:41:13,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-22 11:41:13,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:41:13,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768633452] [2024-11-22 11:41:13,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768633452] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:41:13,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:41:13,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:41:13,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713316579] [2024-11-22 11:41:13,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:41:13,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:41:13,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:41:13,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:41:13,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:41:13,503 INFO L87 Difference]: Start difference. First operand 398 states and 628 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 11:41:13,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:41:13,742 INFO L93 Difference]: Finished difference Result 931 states and 1473 transitions. [2024-11-22 11:41:13,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:41:13,743 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 299 [2024-11-22 11:41:13,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:41:13,748 INFO L225 Difference]: With dead ends: 931 [2024-11-22 11:41:13,748 INFO L226 Difference]: Without dead ends: 618 [2024-11-22 11:41:13,750 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:41:13,751 INFO L432 NwaCegarLoop]: 326 mSDtfsCounter, 354 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 11:41:13,752 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 968 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 11:41:13,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2024-11-22 11:41:13,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 398. [2024-11-22 11:41:13,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 302 states have (on average 1.466887417218543) internal successors, (443), 303 states have internal predecessors, (443), 92 states have call successors, (92), 3 states have call predecessors, (92), 3 states have return successors, (92), 91 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-22 11:41:13,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 627 transitions. [2024-11-22 11:41:13,791 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 627 transitions. Word has length 299 [2024-11-22 11:41:13,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:41:13,792 INFO L471 AbstractCegarLoop]: Abstraction has 398 states and 627 transitions. [2024-11-22 11:41:13,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 11:41:13,793 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 627 transitions. [2024-11-22 11:41:13,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-22 11:41:13,796 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:41:13,796 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:41:13,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 11:41:13,797 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:41:13,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:41:13,797 INFO L85 PathProgramCache]: Analyzing trace with hash 142726193, now seen corresponding path program 1 times [2024-11-22 11:41:13,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:41:13,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004425974] [2024-11-22 11:41:13,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:41:13,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:41:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:41:14,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-22 11:41:14,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:41:14,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004425974] [2024-11-22 11:41:14,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004425974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:41:14,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:41:14,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 11:41:14,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389721721] [2024-11-22 11:41:14,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:41:14,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 11:41:14,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:41:14,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 11:41:14,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:41:14,141 INFO L87 Difference]: Start difference. First operand 398 states and 627 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 11:41:14,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:41:14,324 INFO L93 Difference]: Finished difference Result 1023 states and 1616 transitions. [2024-11-22 11:41:14,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 11:41:14,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 300 [2024-11-22 11:41:14,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:41:14,330 INFO L225 Difference]: With dead ends: 1023 [2024-11-22 11:41:14,332 INFO L226 Difference]: Without dead ends: 711 [2024-11-22 11:41:14,333 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 11:41:14,334 INFO L432 NwaCegarLoop]: 320 mSDtfsCounter, 227 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 11:41:14,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 621 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 11:41:14,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2024-11-22 11:41:14,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 708. [2024-11-22 11:41:14,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 562 states have (on average 1.4857651245551602) internal successors, (835), 564 states have internal predecessors, (835), 140 states have call successors, (140), 5 states have call predecessors, (140), 5 states have return successors, (140), 138 states have call predecessors, (140), 140 states have call successors, (140) [2024-11-22 11:41:14,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 1115 transitions. [2024-11-22 11:41:14,390 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1115 transitions. Word has length 300 [2024-11-22 11:41:14,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:41:14,390 INFO L471 AbstractCegarLoop]: Abstraction has 708 states and 1115 transitions. [2024-11-22 11:41:14,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 11:41:14,391 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1115 transitions. [2024-11-22 11:41:14,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-11-22 11:41:14,396 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:41:14,397 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:41:14,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 11:41:14,397 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:41:14,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:41:14,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1044066426, now seen corresponding path program 1 times [2024-11-22 11:41:14,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:41:14,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122956789] [2024-11-22 11:41:14,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:41:14,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:41:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:41:14,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-22 11:41:14,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:41:14,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122956789] [2024-11-22 11:41:14,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122956789] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:41:14,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:41:14,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:41:14,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264263962] [2024-11-22 11:41:14,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:41:14,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:41:14,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:41:14,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:41:14,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:41:14,958 INFO L87 Difference]: Start difference. First operand 708 states and 1115 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 11:41:15,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:41:15,158 INFO L93 Difference]: Finished difference Result 1934 states and 3043 transitions. [2024-11-22 11:41:15,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 11:41:15,158 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 301 [2024-11-22 11:41:15,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:41:15,167 INFO L225 Difference]: With dead ends: 1934 [2024-11-22 11:41:15,167 INFO L226 Difference]: Without dead ends: 1313 [2024-11-22 11:41:15,169 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 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 11:41:15,171 INFO L432 NwaCegarLoop]: 407 mSDtfsCounter, 405 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 11:41:15,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 1014 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 11:41:15,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2024-11-22 11:41:15,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 944. [2024-11-22 11:41:15,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 944 states, 798 states have (on average 1.5338345864661653) internal successors, (1224), 800 states have internal predecessors, (1224), 140 states have call successors, (140), 5 states have call predecessors, (140), 5 states have return successors, (140), 138 states have call predecessors, (140), 140 states have call successors, (140) [2024-11-22 11:41:15,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1504 transitions. [2024-11-22 11:41:15,250 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1504 transitions. Word has length 301 [2024-11-22 11:41:15,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:41:15,251 INFO L471 AbstractCegarLoop]: Abstraction has 944 states and 1504 transitions. [2024-11-22 11:41:15,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 11:41:15,252 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1504 transitions. [2024-11-22 11:41:15,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-11-22 11:41:15,256 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:41:15,256 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:41:15,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 11:41:15,257 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:41:15,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:41:15,257 INFO L85 PathProgramCache]: Analyzing trace with hash 971679868, now seen corresponding path program 1 times [2024-11-22 11:41:15,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:41:15,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688804509] [2024-11-22 11:41:15,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:41:15,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:41:15,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:41:15,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-22 11:41:15,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:41:15,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688804509] [2024-11-22 11:41:15,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688804509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:41:15,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:41:15,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 11:41:15,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505770865] [2024-11-22 11:41:15,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:41:15,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 11:41:15,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:41:15,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 11:41:15,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:41:15,580 INFO L87 Difference]: Start difference. First operand 944 states and 1504 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 11:41:15,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:41:15,647 INFO L93 Difference]: Finished difference Result 2492 states and 3970 transitions. [2024-11-22 11:41:15,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 11:41:15,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 301 [2024-11-22 11:41:15,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:41:15,657 INFO L225 Difference]: With dead ends: 2492 [2024-11-22 11:41:15,657 INFO L226 Difference]: Without dead ends: 1635 [2024-11-22 11:41:15,659 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 11:41:15,660 INFO L432 NwaCegarLoop]: 487 mSDtfsCounter, 218 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:41:15,661 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 808 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:41:15,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1635 states. [2024-11-22 11:41:15,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1635 to 1633. [2024-11-22 11:41:15,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1633 states, 1387 states have (on average 1.5306416726748377) internal successors, (2123), 1391 states have internal predecessors, (2123), 236 states have call successors, (236), 9 states have call predecessors, (236), 9 states have return successors, (236), 232 states have call predecessors, (236), 236 states have call successors, (236) [2024-11-22 11:41:15,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 2595 transitions. [2024-11-22 11:41:15,753 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 2595 transitions. Word has length 301 [2024-11-22 11:41:15,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:41:15,755 INFO L471 AbstractCegarLoop]: Abstraction has 1633 states and 2595 transitions. [2024-11-22 11:41:15,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 11:41:15,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 2595 transitions. [2024-11-22 11:41:15,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-11-22 11:41:15,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:41:15,760 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:41:15,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 11:41:15,760 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:41:15,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:41:15,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1204018087, now seen corresponding path program 1 times [2024-11-22 11:41:15,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:41:15,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816898749] [2024-11-22 11:41:15,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:41:15,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:41:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:41:16,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-22 11:41:16,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:41:16,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816898749] [2024-11-22 11:41:16,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816898749] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:41:16,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:41:16,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:41:16,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861377105] [2024-11-22 11:41:16,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:41:16,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:41:16,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:41:16,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:41:16,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:41:16,351 INFO L87 Difference]: Start difference. First operand 1633 states and 2595 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 11:41:16,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:41:16,607 INFO L93 Difference]: Finished difference Result 3364 states and 5313 transitions. [2024-11-22 11:41:16,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:41:16,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 301 [2024-11-22 11:41:16,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:41:16,617 INFO L225 Difference]: With dead ends: 3364 [2024-11-22 11:41:16,617 INFO L226 Difference]: Without dead ends: 1818 [2024-11-22 11:41:16,621 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 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 11:41:16,621 INFO L432 NwaCegarLoop]: 338 mSDtfsCounter, 436 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 11:41:16,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 948 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 11:41:16,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2024-11-22 11:41:16,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1474. [2024-11-22 11:41:16,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1243 states have (on average 1.5325824617860015) internal successors, (1905), 1243 states have internal predecessors, (1905), 220 states have call successors, (220), 10 states have call predecessors, (220), 10 states have return successors, (220), 220 states have call predecessors, (220), 220 states have call successors, (220) [2024-11-22 11:41:16,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2345 transitions. [2024-11-22 11:41:16,714 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2345 transitions. Word has length 301 [2024-11-22 11:41:16,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:41:16,715 INFO L471 AbstractCegarLoop]: Abstraction has 1474 states and 2345 transitions. [2024-11-22 11:41:16,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 11:41:16,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2345 transitions. [2024-11-22 11:41:16,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-11-22 11:41:16,720 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:41:16,720 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:41:16,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 11:41:16,721 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:41:16,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:41:16,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1775807997, now seen corresponding path program 1 times [2024-11-22 11:41:16,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:41:16,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571651351] [2024-11-22 11:41:16,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:41:16,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:41:16,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:41:19,359 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-22 11:41:19,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:41:19,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571651351] [2024-11-22 11:41:19,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571651351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:41:19,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:41:19,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-22 11:41:19,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851476838] [2024-11-22 11:41:19,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:41:19,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 11:41:19,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:41:19,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 11:41:19,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-22 11:41:19,363 INFO L87 Difference]: Start difference. First operand 1474 states and 2345 transitions. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 11:41:24,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:41:24,077 INFO L93 Difference]: Finished difference Result 7070 states and 11134 transitions. [2024-11-22 11:41:24,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 11:41:24,078 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 302 [2024-11-22 11:41:24,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:41:24,102 INFO L225 Difference]: With dead ends: 7070 [2024-11-22 11:41:24,102 INFO L226 Difference]: Without dead ends: 5687 [2024-11-22 11:41:24,107 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2024-11-22 11:41:24,108 INFO L432 NwaCegarLoop]: 458 mSDtfsCounter, 2200 mSDsluCounter, 1722 mSDsCounter, 0 mSdLazyCounter, 1922 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2200 SdHoareTripleChecker+Valid, 2180 SdHoareTripleChecker+Invalid, 2189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 1922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-22 11:41:24,109 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2200 Valid, 2180 Invalid, 2189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 1922 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-22 11:41:24,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5687 states. [2024-11-22 11:41:24,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5687 to 4723. [2024-11-22 11:41:24,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4723 states, 4244 states have (on average 1.5607917059377945) internal successors, (6624), 4248 states have internal predecessors, (6624), 448 states have call successors, (448), 30 states have call predecessors, (448), 30 states have return successors, (448), 444 states have call predecessors, (448), 448 states have call successors, (448) [2024-11-22 11:41:24,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4723 states to 4723 states and 7520 transitions. [2024-11-22 11:41:24,341 INFO L78 Accepts]: Start accepts. Automaton has 4723 states and 7520 transitions. Word has length 302 [2024-11-22 11:41:24,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:41:24,342 INFO L471 AbstractCegarLoop]: Abstraction has 4723 states and 7520 transitions. [2024-11-22 11:41:24,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 11:41:24,342 INFO L276 IsEmpty]: Start isEmpty. Operand 4723 states and 7520 transitions. [2024-11-22 11:41:24,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-11-22 11:41:24,349 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:41:24,349 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:41:24,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 11:41:24,350 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:41:24,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:41:24,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1994662715, now seen corresponding path program 1 times [2024-11-22 11:41:24,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:41:24,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838659305] [2024-11-22 11:41:24,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:41:24,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:41:24,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:41:25,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2024-11-22 11:41:25,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:41:25,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838659305] [2024-11-22 11:41:25,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838659305] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:41:25,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843879111] [2024-11-22 11:41:25,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:41:25,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:41:25,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:41:25,010 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 11:41:25,012 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 11:41:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:41:25,246 INFO L255 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 11:41:25,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:41:25,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 529 proven. 120 refuted. 0 times theorem prover too weak. 3135 trivial. 0 not checked. [2024-11-22 11:41:25,752 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:41:26,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 9 proven. 120 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2024-11-22 11:41:26,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843879111] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:41:26,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:41:26,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-22 11:41:26,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514666745] [2024-11-22 11:41:26,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:41:26,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 11:41:26,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:41:26,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 11:41:26,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-22 11:41:26,155 INFO L87 Difference]: Start difference. First operand 4723 states and 7520 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 3 states have call successors, (127), 2 states have call predecessors, (127), 4 states have return successors, (129), 3 states have call predecessors, (129), 3 states have call successors, (129) [2024-11-22 11:41:26,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:41:26,611 INFO L93 Difference]: Finished difference Result 6636 states and 10510 transitions. [2024-11-22 11:41:26,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 11:41:26,612 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 3 states have call successors, (127), 2 states have call predecessors, (127), 4 states have return successors, (129), 3 states have call predecessors, (129), 3 states have call successors, (129) Word has length 302 [2024-11-22 11:41:26,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:41:26,624 INFO L225 Difference]: With dead ends: 6636 [2024-11-22 11:41:26,624 INFO L226 Difference]: Without dead ends: 2008 [2024-11-22 11:41:26,632 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 601 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2024-11-22 11:41:26,632 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 608 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 11:41:26,633 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 697 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 11:41:26,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2008 states. [2024-11-22 11:41:26,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2008 to 1980. [2024-11-22 11:41:26,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1980 states, 1703 states have (on average 1.514386376981797) internal successors, (2579), 1705 states have internal predecessors, (2579), 246 states have call successors, (246), 30 states have call predecessors, (246), 30 states have return successors, (246), 244 states have call predecessors, (246), 246 states have call successors, (246) [2024-11-22 11:41:26,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1980 states to 1980 states and 3071 transitions. [2024-11-22 11:41:26,757 INFO L78 Accepts]: Start accepts. Automaton has 1980 states and 3071 transitions. Word has length 302 [2024-11-22 11:41:26,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:41:26,758 INFO L471 AbstractCegarLoop]: Abstraction has 1980 states and 3071 transitions. [2024-11-22 11:41:26,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 3 states have call successors, (127), 2 states have call predecessors, (127), 4 states have return successors, (129), 3 states have call predecessors, (129), 3 states have call successors, (129) [2024-11-22 11:41:26,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1980 states and 3071 transitions. [2024-11-22 11:41:26,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-11-22 11:41:26,763 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:41:26,763 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:41:26,774 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 11:41:26,967 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 11:41:26,968 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:41:26,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:41:26,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1007315516, now seen corresponding path program 1 times [2024-11-22 11:41:26,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:41:26,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562164289] [2024-11-22 11:41:26,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:41:26,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:41:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:41:27,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 12 proven. 117 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2024-11-22 11:41:27,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:41:27,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562164289] [2024-11-22 11:41:27,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562164289] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:41:27,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708693772] [2024-11-22 11:41:27,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:41:27,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:41:27,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:41:27,751 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 11:41:27,752 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 11:41:27,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:41:27,988 INFO L255 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 11:41:27,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:41:28,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 675 proven. 117 refuted. 0 times theorem prover too weak. 2992 trivial. 0 not checked. [2024-11-22 11:41:28,428 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:41:28,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 12 proven. 117 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2024-11-22 11:41:28,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708693772] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:41:28,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:41:28,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-22 11:41:28,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295089478] [2024-11-22 11:41:28,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:41:28,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 11:41:28,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:41:28,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 11:41:28,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-22 11:41:28,761 INFO L87 Difference]: Start difference. First operand 1980 states and 3071 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 2 states have call successors, (83), 2 states have call predecessors, (83), 4 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) [2024-11-22 11:41:29,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:41:29,312 INFO L93 Difference]: Finished difference Result 3318 states and 5064 transitions. [2024-11-22 11:41:29,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 11:41:29,313 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 2 states have call successors, (83), 2 states have call predecessors, (83), 4 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) Word has length 302 [2024-11-22 11:41:29,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:41:29,321 INFO L225 Difference]: With dead ends: 3318 [2024-11-22 11:41:29,321 INFO L226 Difference]: Without dead ends: 1441 [2024-11-22 11:41:29,324 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 601 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-11-22 11:41:29,325 INFO L432 NwaCegarLoop]: 271 mSDtfsCounter, 381 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 11:41:29,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 711 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 11:41:29,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2024-11-22 11:41:29,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 1413. [2024-11-22 11:41:29,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1413 states, 1129 states have (on average 1.4278122232063772) internal successors, (1612), 1131 states have internal predecessors, (1612), 246 states have call successors, (246), 37 states have call predecessors, (246), 37 states have return successors, (246), 244 states have call predecessors, (246), 246 states have call successors, (246) [2024-11-22 11:41:29,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 2104 transitions. [2024-11-22 11:41:29,448 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 2104 transitions. Word has length 302 [2024-11-22 11:41:29,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:41:29,449 INFO L471 AbstractCegarLoop]: Abstraction has 1413 states and 2104 transitions. [2024-11-22 11:41:29,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 2 states have call successors, (83), 2 states have call predecessors, (83), 4 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) [2024-11-22 11:41:29,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 2104 transitions. [2024-11-22 11:41:29,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2024-11-22 11:41:29,453 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:41:29,453 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:41:29,465 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 11:41:29,654 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 11:41:29,654 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:41:29,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:41:29,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1767786867, now seen corresponding path program 1 times [2024-11-22 11:41:29,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:41:29,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203059210] [2024-11-22 11:41:29,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:41:29,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:41:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:41:30,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-22 11:41:30,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:41:30,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203059210] [2024-11-22 11:41:30,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203059210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:41:30,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:41:30,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 11:41:30,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265263321] [2024-11-22 11:41:30,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:41:30,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 11:41:30,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:41:30,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 11:41:30,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 11:41:30,134 INFO L87 Difference]: Start difference. First operand 1413 states and 2104 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 11:41:32,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:41:32,171 INFO L93 Difference]: Finished difference Result 7585 states and 11280 transitions. [2024-11-22 11:41:32,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 11:41:32,172 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 303 [2024-11-22 11:41:32,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:41:32,208 INFO L225 Difference]: With dead ends: 7585 [2024-11-22 11:41:32,208 INFO L226 Difference]: Without dead ends: 6279 [2024-11-22 11:41:32,213 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-22 11:41:32,214 INFO L432 NwaCegarLoop]: 792 mSDtfsCounter, 1156 mSDsluCounter, 1948 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1156 SdHoareTripleChecker+Valid, 2740 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-22 11:41:32,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1156 Valid, 2740 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-22 11:41:32,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6279 states. [2024-11-22 11:41:32,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6279 to 4855. [2024-11-22 11:41:32,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4855 states, 4159 states have (on average 1.4777590767011302) internal successors, (6146), 4173 states have internal predecessors, (6146), 590 states have call successors, (590), 105 states have call predecessors, (590), 105 states have return successors, (590), 576 states have call predecessors, (590), 590 states have call successors, (590) [2024-11-22 11:41:32,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4855 states to 4855 states and 7326 transitions. [2024-11-22 11:41:32,609 INFO L78 Accepts]: Start accepts. Automaton has 4855 states and 7326 transitions. Word has length 303 [2024-11-22 11:41:32,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:41:32,610 INFO L471 AbstractCegarLoop]: Abstraction has 4855 states and 7326 transitions. [2024-11-22 11:41:32,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 11:41:32,610 INFO L276 IsEmpty]: Start isEmpty. Operand 4855 states and 7326 transitions. [2024-11-22 11:41:32,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2024-11-22 11:41:32,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:41:32,618 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:41:32,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 11:41:32,618 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:41:32,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:41:32,619 INFO L85 PathProgramCache]: Analyzing trace with hash 2120875249, now seen corresponding path program 1 times [2024-11-22 11:41:32,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:41:32,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890691703] [2024-11-22 11:41:32,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:41:32,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:41:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:41:33,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 126 proven. 3 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2024-11-22 11:41:33,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:41:33,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890691703] [2024-11-22 11:41:33,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890691703] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:41:33,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136257883] [2024-11-22 11:41:33,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:41:33,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:41:33,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:41:33,373 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 11:41:33,375 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 11:41:33,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:41:33,617 INFO L255 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 11:41:33,624 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:41:33,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 3486 trivial. 0 not checked. [2024-11-22 11:41:33,869 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 11:41:33,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136257883] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:41:33,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 11:41:33,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 10 [2024-11-22 11:41:33,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406487866] [2024-11-22 11:41:33,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:41:33,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 11:41:33,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:41:33,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 11:41:33,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-22 11:41:33,872 INFO L87 Difference]: Start difference. First operand 4855 states and 7326 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 2 states have call successors, (44), 2 states have call predecessors, (44), 3 states have return successors, (44), 3 states have call predecessors, (44), 2 states have call successors, (44) [2024-11-22 11:41:35,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:41:35,244 INFO L93 Difference]: Finished difference Result 10491 states and 15633 transitions. [2024-11-22 11:41:35,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-22 11:41:35,245 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 2 states have call successors, (44), 2 states have call predecessors, (44), 3 states have return successors, (44), 3 states have call predecessors, (44), 2 states have call successors, (44) Word has length 303 [2024-11-22 11:41:35,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:41:35,272 INFO L225 Difference]: With dead ends: 10491 [2024-11-22 11:41:35,272 INFO L226 Difference]: Without dead ends: 5745 [2024-11-22 11:41:35,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2024-11-22 11:41:35,281 INFO L432 NwaCegarLoop]: 520 mSDtfsCounter, 477 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 2066 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-22 11:41:35,281 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 2066 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-22 11:41:35,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5745 states. [2024-11-22 11:41:35,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5745 to 4263. [2024-11-22 11:41:35,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4263 states, 3565 states have (on average 1.4510518934081347) internal successors, (5173), 3579 states have internal predecessors, (5173), 582 states have call successors, (582), 115 states have call predecessors, (582), 115 states have return successors, (582), 568 states have call predecessors, (582), 582 states have call successors, (582) [2024-11-22 11:41:35,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4263 states to 4263 states and 6337 transitions. [2024-11-22 11:41:35,655 INFO L78 Accepts]: Start accepts. Automaton has 4263 states and 6337 transitions. Word has length 303 [2024-11-22 11:41:35,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:41:35,655 INFO L471 AbstractCegarLoop]: Abstraction has 4263 states and 6337 transitions. [2024-11-22 11:41:35,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 2 states have call successors, (44), 2 states have call predecessors, (44), 3 states have return successors, (44), 3 states have call predecessors, (44), 2 states have call successors, (44) [2024-11-22 11:41:35,656 INFO L276 IsEmpty]: Start isEmpty. Operand 4263 states and 6337 transitions. [2024-11-22 11:41:35,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-11-22 11:41:35,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:41:35,663 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:41:35,673 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 11:41:35,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:41:35,864 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:41:35,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:41:35,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1843412721, now seen corresponding path program 1 times [2024-11-22 11:41:35,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:41:35,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104404011] [2024-11-22 11:41:35,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:41:35,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:41:36,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:41:37,852 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-22 11:41:37,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:41:37,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104404011] [2024-11-22 11:41:37,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104404011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:41:37,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:41:37,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 11:41:37,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621181117] [2024-11-22 11:41:37,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:41:37,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 11:41:37,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:41:37,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 11:41:37,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-22 11:41:37,854 INFO L87 Difference]: Start difference. First operand 4263 states and 6337 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 11:41:39,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:41:39,878 INFO L93 Difference]: Finished difference Result 10579 states and 15905 transitions. [2024-11-22 11:41:39,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 11:41:39,879 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 304 [2024-11-22 11:41:39,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:41:39,907 INFO L225 Difference]: With dead ends: 10579 [2024-11-22 11:41:39,908 INFO L226 Difference]: Without dead ends: 6433 [2024-11-22 11:41:39,920 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2024-11-22 11:41:39,920 INFO L432 NwaCegarLoop]: 348 mSDtfsCounter, 1300 mSDsluCounter, 1542 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1300 SdHoareTripleChecker+Valid, 1890 SdHoareTripleChecker+Invalid, 1177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-22 11:41:39,920 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1300 Valid, 1890 Invalid, 1177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-22 11:41:39,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6433 states. [2024-11-22 11:41:40,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6433 to 4457. [2024-11-22 11:41:40,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4457 states, 3759 states have (on average 1.4596967278531525) internal successors, (5487), 3773 states have internal predecessors, (5487), 582 states have call successors, (582), 115 states have call predecessors, (582), 115 states have return successors, (582), 568 states have call predecessors, (582), 582 states have call successors, (582) [2024-11-22 11:41:40,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4457 states to 4457 states and 6651 transitions. [2024-11-22 11:41:40,339 INFO L78 Accepts]: Start accepts. Automaton has 4457 states and 6651 transitions. Word has length 304 [2024-11-22 11:41:40,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:41:40,340 INFO L471 AbstractCegarLoop]: Abstraction has 4457 states and 6651 transitions. [2024-11-22 11:41:40,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 11:41:40,340 INFO L276 IsEmpty]: Start isEmpty. Operand 4457 states and 6651 transitions. [2024-11-22 11:41:40,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-11-22 11:41:40,348 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:41:40,349 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:41:40,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 11:41:40,349 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:41:40,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:41:40,349 INFO L85 PathProgramCache]: Analyzing trace with hash 85186876, now seen corresponding path program 1 times [2024-11-22 11:41:40,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:41:40,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006225730] [2024-11-22 11:41:40,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:41:40,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:41:40,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:41:41,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 36 proven. 93 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2024-11-22 11:41:41,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:41:41,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006225730] [2024-11-22 11:41:41,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006225730] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:41:41,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075974875] [2024-11-22 11:41:41,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:41:41,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:41:41,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:41:41,886 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 11:41:41,888 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 11:41:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:41:42,120 INFO L255 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 11:41:42,124 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:41:42,589 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1741 proven. 78 refuted. 0 times theorem prover too weak. 1965 trivial. 0 not checked. [2024-11-22 11:41:42,590 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:41:42,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 87 proven. 42 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2024-11-22 11:41:42,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075974875] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:41:42,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:41:42,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 7] total 19 [2024-11-22 11:41:42,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615988794] [2024-11-22 11:41:42,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:41:42,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-22 11:41:42,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:41:42,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-22 11:41:42,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2024-11-22 11:41:42,956 INFO L87 Difference]: Start difference. First operand 4457 states and 6651 transitions. Second operand has 19 states, 19 states have (on average 10.263157894736842) internal successors, (195), 18 states have internal predecessors, (195), 6 states have call successors, (102), 3 states have call predecessors, (102), 5 states have return successors, (103), 6 states have call predecessors, (103), 6 states have call successors, (103) [2024-11-22 11:41:48,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-22 11:41:52,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-22 11:41:56,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-22 11:42:00,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-22 11:42:04,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-22 11:42:08,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-22 11:42:12,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-22 11:42:16,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-22 11:42:20,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-22 11:42:24,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []