./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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/nla-digbench-scaling/cohencu-ll_valuebound1.c -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 1009b309b84d3a678e4f12db10e873a2b96e065352111c00074b04d416cca18d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 06:57:33,927 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 06:57:34,003 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 06:57:34,007 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 06:57:34,009 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 06:57:34,032 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 06:57:34,032 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 06:57:34,033 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 06:57:34,033 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 06:57:34,034 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 06:57:34,034 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 06:57:34,035 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 06:57:34,035 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 06:57:34,035 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 06:57:34,037 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 06:57:34,037 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 06:57:34,037 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 06:57:34,037 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 06:57:34,038 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 06:57:34,038 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 06:57:34,038 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 06:57:34,038 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 06:57:34,041 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 06:57:34,041 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 06:57:34,042 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 06:57:34,042 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 06:57:34,042 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 06:57:34,042 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 06:57:34,042 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 06:57:34,042 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 06:57:34,043 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 06:57:34,043 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 06:57:34,043 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:57:34,043 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 06:57:34,043 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 06:57:34,043 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 06:57:34,043 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 06:57:34,043 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 06:57:34,044 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 06:57:34,044 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 06:57:34,044 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 06:57:34,044 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 06:57:34,044 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1009b309b84d3a678e4f12db10e873a2b96e065352111c00074b04d416cca18d [2024-11-16 06:57:34,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 06:57:34,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 06:57:34,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 06:57:34,279 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 06:57:34,280 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 06:57:34,281 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.c [2024-11-16 06:57:35,502 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 06:57:35,665 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 06:57:35,667 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.c [2024-11-16 06:57:35,674 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16bfe517e/31145bea67c645de82ea8fca5789d061/FLAG450f1ef33 [2024-11-16 06:57:36,070 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16bfe517e/31145bea67c645de82ea8fca5789d061 [2024-11-16 06:57:36,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 06:57:36,075 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 06:57:36,077 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 06:57:36,077 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 06:57:36,083 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 06:57:36,084 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:57:36" (1/1) ... [2024-11-16 06:57:36,084 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b3a707b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:57:36, skipping insertion in model container [2024-11-16 06:57:36,085 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:57:36" (1/1) ... [2024-11-16 06:57:36,099 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 06:57:36,255 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/nla-digbench-scaling/cohencu-ll_valuebound1.c[588,601] [2024-11-16 06:57:36,289 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:57:36,299 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 06:57:36,324 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/nla-digbench-scaling/cohencu-ll_valuebound1.c[588,601] [2024-11-16 06:57:36,337 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:57:36,354 INFO L204 MainTranslator]: Completed translation [2024-11-16 06:57:36,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:57:36 WrapperNode [2024-11-16 06:57:36,354 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 06:57:36,359 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 06:57:36,359 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 06:57:36,359 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 06:57:36,365 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:57:36" (1/1) ... [2024-11-16 06:57:36,370 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:57:36" (1/1) ... [2024-11-16 06:57:36,385 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 47 [2024-11-16 06:57:36,385 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 06:57:36,386 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 06:57:36,386 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 06:57:36,386 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 06:57:36,396 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:57:36" (1/1) ... [2024-11-16 06:57:36,396 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:57:36" (1/1) ... [2024-11-16 06:57:36,398 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:57:36" (1/1) ... [2024-11-16 06:57:36,410 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]. [2024-11-16 06:57:36,411 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:57:36" (1/1) ... [2024-11-16 06:57:36,411 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:57:36" (1/1) ... [2024-11-16 06:57:36,413 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:57:36" (1/1) ... [2024-11-16 06:57:36,413 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:57:36" (1/1) ... [2024-11-16 06:57:36,414 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:57:36" (1/1) ... [2024-11-16 06:57:36,414 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:57:36" (1/1) ... [2024-11-16 06:57:36,415 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 06:57:36,416 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 06:57:36,416 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 06:57:36,416 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 06:57:36,417 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:57:36" (1/1) ... [2024-11-16 06:57:36,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:57:36,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:57:36,460 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) [2024-11-16 06:57:36,462 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 [2024-11-16 06:57:36,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 06:57:36,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 06:57:36,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 06:57:36,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 06:57:36,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-16 06:57:36,500 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-16 06:57:36,551 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 06:57:36,553 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 06:57:36,677 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-16 06:57:36,678 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 06:57:36,688 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 06:57:36,689 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 06:57:36,689 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:57:36 BoogieIcfgContainer [2024-11-16 06:57:36,689 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 06:57:36,693 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 06:57:36,693 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 06:57:36,696 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 06:57:36,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 06:57:36" (1/3) ... [2024-11-16 06:57:36,697 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cde14cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:57:36, skipping insertion in model container [2024-11-16 06:57:36,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:57:36" (2/3) ... [2024-11-16 06:57:36,698 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cde14cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:57:36, skipping insertion in model container [2024-11-16 06:57:36,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:57:36" (3/3) ... [2024-11-16 06:57:36,699 INFO L112 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound1.c [2024-11-16 06:57:36,711 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 06:57:36,712 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 06:57:36,755 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 06:57:36,760 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;@557912e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 06:57:36,761 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 06:57:36,763 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-16 06:57:36,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-16 06:57:36,768 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:57:36,769 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:57:36,769 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:57:36,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:57:36,773 INFO L85 PathProgramCache]: Analyzing trace with hash -429095500, now seen corresponding path program 1 times [2024-11-16 06:57:36,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:57:36,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75139133] [2024-11-16 06:57:36,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:57:36,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:57:36,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:57:36,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:57:36,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:57:36,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75139133] [2024-11-16 06:57:36,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75139133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:57:36,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:57:36,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 06:57:36,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666113727] [2024-11-16 06:57:36,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:57:36,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 06:57:36,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:57:36,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 06:57:36,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 06:57:36,914 INFO L87 Difference]: Start difference. First operand has 29 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:57:36,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:57:36,929 INFO L93 Difference]: Finished difference Result 55 states and 93 transitions. [2024-11-16 06:57:36,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 06:57:36,930 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-16 06:57:36,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:57:36,934 INFO L225 Difference]: With dead ends: 55 [2024-11-16 06:57:36,935 INFO L226 Difference]: Without dead ends: 25 [2024-11-16 06:57:36,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 06:57:36,939 INFO L432 NwaCegarLoop]: 39 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, 39 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 [2024-11-16 06:57:36,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:57:36,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-16 06:57:36,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-16 06:57:36,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-16 06:57:36,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2024-11-16 06:57:36,965 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2024-11-16 06:57:36,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:57:36,965 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2024-11-16 06:57:36,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:57:36,965 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2024-11-16 06:57:36,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-16 06:57:36,966 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:57:36,966 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:57:36,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 06:57:36,966 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:57:36,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:57:36,967 INFO L85 PathProgramCache]: Analyzing trace with hash 458970679, now seen corresponding path program 1 times [2024-11-16 06:57:36,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:57:36,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852716125] [2024-11-16 06:57:36,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:57:36,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:57:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:57:37,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:57:37,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:57:37,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852716125] [2024-11-16 06:57:37,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852716125] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:57:37,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:57:37,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 06:57:37,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514939933] [2024-11-16 06:57:37,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:57:37,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 06:57:37,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:57:37,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 06:57:37,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 06:57:37,214 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:57:37,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:57:37,337 INFO L93 Difference]: Finished difference Result 32 states and 41 transitions. [2024-11-16 06:57:37,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 06:57:37,338 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-16 06:57:37,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:57:37,339 INFO L225 Difference]: With dead ends: 32 [2024-11-16 06:57:37,339 INFO L226 Difference]: Without dead ends: 29 [2024-11-16 06:57:37,339 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 06:57:37,340 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 4 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:57:37,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 93 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:57:37,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-16 06:57:37,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-16 06:57:37,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-16 06:57:37,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2024-11-16 06:57:37,359 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 11 [2024-11-16 06:57:37,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:57:37,359 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2024-11-16 06:57:37,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:57:37,359 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2024-11-16 06:57:37,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-16 06:57:37,360 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:57:37,360 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:57:37,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 06:57:37,362 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:57:37,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:57:37,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1353465059, now seen corresponding path program 1 times [2024-11-16 06:57:37,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:57:37,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20262909] [2024-11-16 06:57:37,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:57:37,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:57:37,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 06:57:37,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [150479931] [2024-11-16 06:57:37,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:57:37,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:57:37,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:57:37,394 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) [2024-11-16 06:57:37,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 06:57:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:57:37,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 06:57:37,458 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:57:37,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:57:37,536 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 06:57:37,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:57:37,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20262909] [2024-11-16 06:57:37,537 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 06:57:37,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150479931] [2024-11-16 06:57:37,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150479931] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:57:37,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:57:37,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 06:57:37,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235529517] [2024-11-16 06:57:37,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:57:37,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 06:57:37,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:57:37,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 06:57:37,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 06:57:37,566 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 06:57:37,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:57:37,647 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2024-11-16 06:57:37,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 06:57:37,647 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-11-16 06:57:37,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:57:37,652 INFO L225 Difference]: With dead ends: 50 [2024-11-16 06:57:37,652 INFO L226 Difference]: Without dead ends: 47 [2024-11-16 06:57:37,652 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 06:57:37,653 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 4 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:57:37,653 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 115 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:57:37,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-16 06:57:37,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 37. [2024-11-16 06:57:37,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 20 states have (on average 1.1) internal successors, (22), 22 states have internal predecessors, (22), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-16 06:57:37,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2024-11-16 06:57:37,674 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 16 [2024-11-16 06:57:37,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:57:37,674 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2024-11-16 06:57:37,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 06:57:37,675 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2024-11-16 06:57:37,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-16 06:57:37,675 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:57:37,675 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:57:37,691 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 06:57:37,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:57:37,876 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:57:37,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:57:37,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1980317321, now seen corresponding path program 1 times [2024-11-16 06:57:37,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:57:37,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176056703] [2024-11-16 06:57:37,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:57:37,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:57:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 06:57:37,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [541130052] [2024-11-16 06:57:37,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:57:37,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:57:37,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:57:37,896 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) [2024-11-16 06:57:37,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 06:57:37,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:57:37,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 06:57:37,934 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:57:37,985 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:57:37,985 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 06:57:37,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:57:37,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176056703] [2024-11-16 06:57:37,986 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 06:57:37,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541130052] [2024-11-16 06:57:37,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541130052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:57:37,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:57:37,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 06:57:37,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528615131] [2024-11-16 06:57:37,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:57:37,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 06:57:37,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:57:37,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 06:57:37,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 06:57:37,988 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 06:57:38,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:57:38,089 INFO L93 Difference]: Finished difference Result 54 states and 72 transitions. [2024-11-16 06:57:38,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 06:57:38,090 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2024-11-16 06:57:38,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:57:38,091 INFO L225 Difference]: With dead ends: 54 [2024-11-16 06:57:38,091 INFO L226 Difference]: Without dead ends: 51 [2024-11-16 06:57:38,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 06:57:38,093 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 4 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:57:38,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 112 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:57:38,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-16 06:57:38,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2024-11-16 06:57:38,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 24 states have (on average 1.125) internal successors, (27), 26 states have internal predecessors, (27), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-16 06:57:38,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2024-11-16 06:57:38,112 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 21 [2024-11-16 06:57:38,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:57:38,112 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2024-11-16 06:57:38,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 06:57:38,113 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2024-11-16 06:57:38,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-16 06:57:38,113 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:57:38,113 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:57:38,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 06:57:38,318 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,SelfDestructingSolverStorable3 [2024-11-16 06:57:38,319 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:57:38,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:57:38,319 INFO L85 PathProgramCache]: Analyzing trace with hash -945415901, now seen corresponding path program 1 times [2024-11-16 06:57:38,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:57:38,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003515204] [2024-11-16 06:57:38,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:57:38,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:57:38,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 06:57:38,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [505149041] [2024-11-16 06:57:38,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:57:38,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:57:38,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:57:38,339 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) [2024-11-16 06:57:38,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 06:57:38,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:57:38,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-16 06:57:38,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:57:38,459 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 06:57:38,459 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 06:57:38,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:57:38,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003515204] [2024-11-16 06:57:38,459 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 06:57:38,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505149041] [2024-11-16 06:57:38,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505149041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:57:38,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:57:38,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 06:57:38,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918073971] [2024-11-16 06:57:38,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:57:38,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 06:57:38,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:57:38,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 06:57:38,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 06:57:38,461 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-16 06:57:38,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:57:38,535 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2024-11-16 06:57:38,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 06:57:38,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2024-11-16 06:57:38,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:57:38,537 INFO L225 Difference]: With dead ends: 62 [2024-11-16 06:57:38,538 INFO L226 Difference]: Without dead ends: 49 [2024-11-16 06:57:38,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 06:57:38,539 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 4 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:57:38,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 104 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:57:38,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-16 06:57:38,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-11-16 06:57:38,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 06:57:38,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 60 transitions. [2024-11-16 06:57:38,554 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 60 transitions. Word has length 26 [2024-11-16 06:57:38,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:57:38,555 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 60 transitions. [2024-11-16 06:57:38,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-16 06:57:38,556 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 60 transitions. [2024-11-16 06:57:38,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-16 06:57:38,559 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:57:38,559 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:57:38,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 06:57:38,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:57:38,764 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:57:38,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:57:38,765 INFO L85 PathProgramCache]: Analyzing trace with hash -2137612214, now seen corresponding path program 1 times [2024-11-16 06:57:38,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:57:38,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386095172] [2024-11-16 06:57:38,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:57:38,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:57:38,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 06:57:38,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [718839636] [2024-11-16 06:57:38,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:57:38,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:57:38,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:57:38,806 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) [2024-11-16 06:57:38,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 06:57:38,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:57:38,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-16 06:57:38,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:57:38,962 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 11 proven. 20 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-16 06:57:38,963 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:57:39,121 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 14 proven. 17 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-16 06:57:39,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:57:39,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386095172] [2024-11-16 06:57:39,122 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 06:57:39,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718839636] [2024-11-16 06:57:39,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718839636] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:57:39,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-16 06:57:39,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2024-11-16 06:57:39,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622088278] [2024-11-16 06:57:39,122 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-16 06:57:39,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 06:57:39,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:57:39,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 06:57:39,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-16 06:57:39,124 INFO L87 Difference]: Start difference. First operand 49 states and 60 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 11 states have internal predecessors, (29), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-16 06:57:39,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:57:39,303 INFO L93 Difference]: Finished difference Result 74 states and 94 transitions. [2024-11-16 06:57:39,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 06:57:39,303 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 11 states have internal predecessors, (29), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 44 [2024-11-16 06:57:39,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:57:39,304 INFO L225 Difference]: With dead ends: 74 [2024-11-16 06:57:39,304 INFO L226 Difference]: Without dead ends: 71 [2024-11-16 06:57:39,305 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-11-16 06:57:39,305 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 11 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:57:39,306 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 180 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:57:39,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-16 06:57:39,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 57. [2024-11-16 06:57:39,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 34 states have internal predecessors, (35), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 06:57:39,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2024-11-16 06:57:39,321 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 44 [2024-11-16 06:57:39,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:57:39,321 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2024-11-16 06:57:39,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 11 states have internal predecessors, (29), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-16 06:57:39,322 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2024-11-16 06:57:39,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-16 06:57:39,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:57:39,322 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:57:39,341 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 06:57:39,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:57:39,523 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:57:39,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:57:39,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1540712048, now seen corresponding path program 2 times [2024-11-16 06:57:39,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:57:39,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757953571] [2024-11-16 06:57:39,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:57:39,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:57:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 06:57:39,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [45697220] [2024-11-16 06:57:39,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:57:39,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:57:39,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:57:39,547 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) [2024-11-16 06:57:39,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 06:57:39,596 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:57:39,597 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:57:39,597 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-16 06:57:39,599 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:57:39,721 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 28 proven. 9 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-16 06:57:39,722 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:57:39,856 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 28 proven. 9 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-16 06:57:39,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:57:39,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757953571] [2024-11-16 06:57:39,856 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 06:57:39,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45697220] [2024-11-16 06:57:39,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45697220] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:57:39,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-16 06:57:39,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2024-11-16 06:57:39,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86671418] [2024-11-16 06:57:39,857 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-16 06:57:39,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 06:57:39,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:57:39,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 06:57:39,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-16 06:57:39,858 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand has 14 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-16 06:57:40,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:57:40,097 INFO L93 Difference]: Finished difference Result 89 states and 107 transitions. [2024-11-16 06:57:40,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 06:57:40,098 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14) Word has length 49 [2024-11-16 06:57:40,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:57:40,100 INFO L225 Difference]: With dead ends: 89 [2024-11-16 06:57:40,100 INFO L226 Difference]: Without dead ends: 83 [2024-11-16 06:57:40,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-11-16 06:57:40,101 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 12 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:57:40,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 153 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:57:40,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-16 06:57:40,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 80. [2024-11-16 06:57:40,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 47 states have internal predecessors, (48), 24 states have call successors, (24), 10 states have call predecessors, (24), 10 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-16 06:57:40,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 94 transitions. [2024-11-16 06:57:40,117 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 94 transitions. Word has length 49 [2024-11-16 06:57:40,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:57:40,118 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 94 transitions. [2024-11-16 06:57:40,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-16 06:57:40,118 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 94 transitions. [2024-11-16 06:57:40,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-16 06:57:40,123 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:57:40,123 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:57:40,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 06:57:40,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:57:40,324 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:57:40,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:57:40,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1950321542, now seen corresponding path program 1 times [2024-11-16 06:57:40,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:57:40,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135930399] [2024-11-16 06:57:40,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:57:40,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:57:40,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 06:57:40,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [846924024] [2024-11-16 06:57:40,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:57:40,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:57:40,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:57:40,358 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:57:40,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 06:57:40,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:57:40,411 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-16 06:57:40,413 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:57:40,673 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-16 06:57:40,673 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:57:41,238 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-16 06:57:41,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:57:41,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135930399] [2024-11-16 06:57:41,238 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 06:57:41,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846924024] [2024-11-16 06:57:41,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846924024] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:57:41,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-16 06:57:41,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-11-16 06:57:41,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272997671] [2024-11-16 06:57:41,238 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-16 06:57:41,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 06:57:41,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:57:41,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 06:57:41,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-16 06:57:41,240 INFO L87 Difference]: Start difference. First operand 80 states and 94 transitions. Second operand has 10 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 6 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2024-11-16 06:57:41,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:57:41,624 INFO L93 Difference]: Finished difference Result 109 states and 131 transitions. [2024-11-16 06:57:41,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 06:57:41,624 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 6 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 70 [2024-11-16 06:57:41,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:57:41,625 INFO L225 Difference]: With dead ends: 109 [2024-11-16 06:57:41,625 INFO L226 Difference]: Without dead ends: 106 [2024-11-16 06:57:41,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 128 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-16 06:57:41,626 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 5 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 06:57:41,626 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 156 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 06:57:41,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-16 06:57:41,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 102. [2024-11-16 06:57:41,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 57 states have (on average 1.0701754385964912) internal successors, (61), 60 states have internal predecessors, (61), 31 states have call successors, (31), 13 states have call predecessors, (31), 13 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-16 06:57:41,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 121 transitions. [2024-11-16 06:57:41,645 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 121 transitions. Word has length 70 [2024-11-16 06:57:41,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:57:41,646 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 121 transitions. [2024-11-16 06:57:41,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 6 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2024-11-16 06:57:41,646 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 121 transitions. [2024-11-16 06:57:41,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-16 06:57:41,647 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:57:41,647 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:57:41,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-16 06:57:41,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:57:41,847 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:57:41,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:57:41,848 INFO L85 PathProgramCache]: Analyzing trace with hash -436515072, now seen corresponding path program 1 times [2024-11-16 06:57:41,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:57:41,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340101391] [2024-11-16 06:57:41,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:57:41,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:57:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 06:57:41,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [445860317] [2024-11-16 06:57:41,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:57:41,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:57:41,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:57:41,875 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:57:41,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 06:57:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:57:41,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-16 06:57:41,927 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:57:42,123 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-16 06:57:42,124 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:57:42,381 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-16 06:57:42,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:57:42,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340101391] [2024-11-16 06:57:42,381 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 06:57:42,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445860317] [2024-11-16 06:57:42,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445860317] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:57:42,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-16 06:57:42,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2024-11-16 06:57:42,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849192381] [2024-11-16 06:57:42,382 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-16 06:57:42,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 06:57:42,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:57:42,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 06:57:42,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-11-16 06:57:42,383 INFO L87 Difference]: Start difference. First operand 102 states and 121 transitions. Second operand has 14 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 6 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2024-11-16 06:57:42,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:57:42,789 INFO L93 Difference]: Finished difference Result 121 states and 140 transitions. [2024-11-16 06:57:42,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 06:57:42,790 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 6 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) Word has length 75 [2024-11-16 06:57:42,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:57:42,791 INFO L225 Difference]: With dead ends: 121 [2024-11-16 06:57:42,791 INFO L226 Difference]: Without dead ends: 111 [2024-11-16 06:57:42,792 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2024-11-16 06:57:42,792 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 17 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 06:57:42,793 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 246 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 06:57:42,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-16 06:57:42,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 108. [2024-11-16 06:57:42,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 65 states have internal predecessors, (66), 29 states have call successors, (29), 15 states have call predecessors, (29), 15 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-16 06:57:42,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 123 transitions. [2024-11-16 06:57:42,831 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 123 transitions. Word has length 75 [2024-11-16 06:57:42,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:57:42,831 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 123 transitions. [2024-11-16 06:57:42,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 6 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2024-11-16 06:57:42,831 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 123 transitions. [2024-11-16 06:57:42,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-16 06:57:42,832 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:57:42,832 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:57:42,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-16 06:57:43,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:57:43,033 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:57:43,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:57:43,033 INFO L85 PathProgramCache]: Analyzing trace with hash 597706225, now seen corresponding path program 3 times [2024-11-16 06:57:43,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:57:43,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431102439] [2024-11-16 06:57:43,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:57:43,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:57:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 06:57:43,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [964638856] [2024-11-16 06:57:43,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:57:43,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:57:43,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:57:43,077 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:57:43,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 06:57:43,145 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-16 06:57:43,145 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:57:43,146 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-16 06:57:43,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:57:43,415 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 55 proven. 27 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-11-16 06:57:43,415 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:57:44,122 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 55 proven. 27 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-11-16 06:57:44,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:57:44,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431102439] [2024-11-16 06:57:44,123 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 06:57:44,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964638856] [2024-11-16 06:57:44,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964638856] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:57:44,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-16 06:57:44,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2024-11-16 06:57:44,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705022271] [2024-11-16 06:57:44,125 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-16 06:57:44,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-16 06:57:44,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:57:44,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-16 06:57:44,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-11-16 06:57:44,126 INFO L87 Difference]: Start difference. First operand 108 states and 123 transitions. Second operand has 16 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) [2024-11-16 06:57:49,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-16 06:57:50,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:57:50,168 INFO L93 Difference]: Finished difference Result 133 states and 147 transitions. [2024-11-16 06:57:50,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 06:57:50,168 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) Word has length 82 [2024-11-16 06:57:50,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:57:50,169 INFO L225 Difference]: With dead ends: 133 [2024-11-16 06:57:50,169 INFO L226 Difference]: Without dead ends: 114 [2024-11-16 06:57:50,170 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 148 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2024-11-16 06:57:50,170 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 11 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 68 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-11-16 06:57:50,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 190 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 227 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2024-11-16 06:57:50,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-16 06:57:50,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 111. [2024-11-16 06:57:50,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 70 states have internal predecessors, (71), 24 states have call successors, (24), 17 states have call predecessors, (24), 17 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-16 06:57:50,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 118 transitions. [2024-11-16 06:57:50,199 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 118 transitions. Word has length 82 [2024-11-16 06:57:50,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:57:50,200 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 118 transitions. [2024-11-16 06:57:50,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) [2024-11-16 06:57:50,200 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 118 transitions. [2024-11-16 06:57:50,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-16 06:57:50,206 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:57:50,206 INFO L215 NwaCegarLoop]: trace histogram [22, 21, 21, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:57:50,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-16 06:57:50,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-16 06:57:50,407 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:57:50,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:57:50,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1736778824, now seen corresponding path program 2 times [2024-11-16 06:57:50,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:57:50,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719263839] [2024-11-16 06:57:50,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:57:50,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:57:50,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:57:50,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 06:57:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:57:50,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 06:57:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:57:50,654 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 06:57:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:57:50,659 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 06:57:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:57:50,663 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 06:57:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:57:50,667 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-16 06:57:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:57:50,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 06:57:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:57:50,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-16 06:57:50,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:57:50,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-16 06:57:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:57:50,679 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-16 06:57:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:57:50,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-16 06:57:50,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:57:50,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-16 06:57:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:57:50,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 06:57:50,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:57:50,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-16 06:57:50,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:57:50,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-16 06:57:50,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:57:50,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-11-16 06:57:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:57:50,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-16 06:57:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:57:50,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-11-16 06:57:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:57:50,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-16 06:57:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:57:50,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-11-16 06:57:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:57:50,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-11-16 06:57:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:57:50,703 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 74 proven. 16 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-16 06:57:50,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:57:50,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719263839] [2024-11-16 06:57:50,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719263839] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:57:50,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006935176] [2024-11-16 06:57:50,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:57:50,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:57:50,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:57:50,707 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:57:50,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 06:57:50,786 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:57:50,786 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:57:50,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-16 06:57:50,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:57:50,930 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 438 proven. 0 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2024-11-16 06:57:50,930 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 06:57:50,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006935176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:57:50,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 06:57:50,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-16 06:57:50,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818562197] [2024-11-16 06:57:50,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:57:50,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 06:57:50,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:57:50,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 06:57:50,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-16 06:57:50,932 INFO L87 Difference]: Start difference. First operand 111 states and 118 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 4 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2024-11-16 06:57:50,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:57:50,978 INFO L93 Difference]: Finished difference Result 115 states and 121 transitions. [2024-11-16 06:57:50,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 06:57:50,979 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 4 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 126 [2024-11-16 06:57:50,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:57:50,979 INFO L225 Difference]: With dead ends: 115 [2024-11-16 06:57:50,979 INFO L226 Difference]: Without dead ends: 0 [2024-11-16 06:57:50,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-16 06:57:50,980 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:57:50,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:57:50,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-16 06:57:50,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-16 06:57:50,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:57:50,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-16 06:57:50,981 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 126 [2024-11-16 06:57:50,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:57:50,982 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-16 06:57:50,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 4 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2024-11-16 06:57:50,982 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-16 06:57:50,982 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-16 06:57:50,984 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-16 06:57:50,997 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-16 06:57:51,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:57:51,191 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1] [2024-11-16 06:57:51,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-16 06:57:51,861 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-16 06:57:51,873 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 06:57:51 BoogieIcfgContainer [2024-11-16 06:57:51,874 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-16 06:57:51,874 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-16 06:57:51,874 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-16 06:57:51,874 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-16 06:57:51,875 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:57:36" (3/4) ... [2024-11-16 06:57:51,876 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-16 06:57:51,879 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-16 06:57:51,882 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-11-16 06:57:51,882 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-16 06:57:51,882 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-16 06:57:51,882 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-16 06:57:51,942 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-16 06:57:51,942 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-16 06:57:51,942 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-16 06:57:51,943 INFO L158 Benchmark]: Toolchain (without parser) took 15867.43ms. Allocated memory was 163.6MB in the beginning and 255.9MB in the end (delta: 92.3MB). Free memory was 100.8MB in the beginning and 192.9MB in the end (delta: -92.1MB). Peak memory consumption was 1.3MB. Max. memory is 16.1GB. [2024-11-16 06:57:51,943 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 96.5MB. Free memory is still 51.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 06:57:51,943 INFO L158 Benchmark]: CACSL2BoogieTranslator took 280.65ms. Allocated memory is still 163.6MB. Free memory was 100.4MB in the beginning and 132.7MB in the end (delta: -32.3MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2024-11-16 06:57:51,943 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.89ms. Allocated memory is still 163.6MB. Free memory was 132.7MB in the beginning and 130.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 06:57:51,943 INFO L158 Benchmark]: Boogie Preprocessor took 29.30ms. Allocated memory is still 163.6MB. Free memory was 130.6MB in the beginning and 129.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 06:57:51,944 INFO L158 Benchmark]: IcfgBuilder took 273.72ms. Allocated memory is still 163.6MB. Free memory was 129.3MB in the beginning and 116.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-16 06:57:51,944 INFO L158 Benchmark]: TraceAbstraction took 15181.01ms. Allocated memory was 163.6MB in the beginning and 255.9MB in the end (delta: 92.3MB). Free memory was 116.0MB in the beginning and 197.1MB in the end (delta: -81.1MB). Peak memory consumption was 133.2MB. Max. memory is 16.1GB. [2024-11-16 06:57:51,944 INFO L158 Benchmark]: Witness Printer took 68.10ms. Allocated memory is still 255.9MB. Free memory was 197.1MB in the beginning and 192.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-16 06:57:51,945 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 96.5MB. Free memory is still 51.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 280.65ms. Allocated memory is still 163.6MB. Free memory was 100.4MB in the beginning and 132.7MB in the end (delta: -32.3MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.89ms. Allocated memory is still 163.6MB. Free memory was 132.7MB in the beginning and 130.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.30ms. Allocated memory is still 163.6MB. Free memory was 130.6MB in the beginning and 129.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 273.72ms. Allocated memory is still 163.6MB. Free memory was 129.3MB in the beginning and 116.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 15181.01ms. Allocated memory was 163.6MB in the beginning and 255.9MB in the end (delta: 92.3MB). Free memory was 116.0MB in the beginning and 197.1MB in the end (delta: -81.1MB). Peak memory consumption was 133.2MB. Max. memory is 16.1GB. * Witness Printer took 68.10ms. Allocated memory is still 255.9MB. Free memory was 197.1MB in the beginning and 192.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 14.4s, OverallIterations: 11, TraceHistogramMax: 22, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 125 SdHoareTripleChecker+Valid, 6.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 72 mSDsluCounter, 1478 SdHoareTripleChecker+Invalid, 6.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1114 mSDsCounter, 258 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1047 IncrementalHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 258 mSolverCounterUnsat, 364 mSDtfsCounter, 1047 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 895 GetRequests, 790 SyntacticMatches, 3 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111occurred in iteration=10, InterpolantAutomatonStates: 80, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 41 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 1039 NumberOfCodeBlocks, 999 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 959 ConstructedInterpolants, 0 QuantifiedInterpolants, 4236 SizeOfPredicates, 14 NumberOfNonLiveVariables, 1146 ConjunctsInSsa, 157 ConjunctsInUnsatCore, 17 InterpolantComputations, 6 PerfectInterpolantSequences, 3897/4054 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 33]: Location Invariant Derived location invariant: null - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (cond != 0) Ensures: (cond != 0) RESULT: Ultimate proved your program to be correct! [2024-11-16 06:57:51,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE