./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-simple/nested_3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-simple/nested_3.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 6a30debb45adf4eb2040807436dec0136066a492a6c11eb0dbebd1f179f328d9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 01:10:15,964 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 01:10:16,036 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 01:10:16,040 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 01:10:16,041 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 01:10:16,076 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 01:10:16,077 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 01:10:16,077 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 01:10:16,078 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 01:10:16,079 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 01:10:16,080 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 01:10:16,080 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 01:10:16,081 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 01:10:16,083 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 01:10:16,083 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 01:10:16,084 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 01:10:16,084 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 01:10:16,084 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 01:10:16,085 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 01:10:16,085 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 01:10:16,085 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 01:10:16,087 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 01:10:16,088 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 01:10:16,088 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 01:10:16,088 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 01:10:16,088 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 01:10:16,089 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 01:10:16,089 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 01:10:16,089 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 01:10:16,089 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 01:10:16,090 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 01:10:16,090 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 01:10:16,090 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 01:10:16,090 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 01:10:16,091 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 01:10:16,091 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 01:10:16,095 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 01:10:16,096 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 01:10:16,096 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 01:10:16,096 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 01:10:16,097 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 01:10:16,097 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 01:10:16,098 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a30debb45adf4eb2040807436dec0136066a492a6c11eb0dbebd1f179f328d9 [2024-11-22 01:10:16,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 01:10:16,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 01:10:16,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 01:10:16,388 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 01:10:16,388 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 01:10:16,389 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-simple/nested_3.c [2024-11-22 01:10:17,833 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 01:10:18,020 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 01:10:18,021 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-simple/nested_3.c [2024-11-22 01:10:18,028 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da3cfe9ad/7fa69ac1aadf4646afe9ab6ce5981fed/FLAGf830d223b [2024-11-22 01:10:18,413 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da3cfe9ad/7fa69ac1aadf4646afe9ab6ce5981fed [2024-11-22 01:10:18,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 01:10:18,416 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 01:10:18,418 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 01:10:18,418 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 01:10:18,424 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 01:10:18,425 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:10:18" (1/1) ... [2024-11-22 01:10:18,426 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72c98303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:18, skipping insertion in model container [2024-11-22 01:10:18,426 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:10:18" (1/1) ... [2024-11-22 01:10:18,447 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 01:10:18,639 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/loop-simple/nested_3.c[784,797] [2024-11-22 01:10:18,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 01:10:18,651 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 01:10:18,664 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/loop-simple/nested_3.c[784,797] [2024-11-22 01:10:18,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 01:10:18,679 INFO L204 MainTranslator]: Completed translation [2024-11-22 01:10:18,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:18 WrapperNode [2024-11-22 01:10:18,679 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 01:10:18,681 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 01:10:18,681 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 01:10:18,681 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 01:10:18,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:18" (1/1) ... [2024-11-22 01:10:18,695 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:18" (1/1) ... [2024-11-22 01:10:18,713 INFO L138 Inliner]: procedures = 10, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 40 [2024-11-22 01:10:18,713 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 01:10:18,714 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 01:10:18,714 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 01:10:18,714 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 01:10:18,724 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:18" (1/1) ... [2024-11-22 01:10:18,724 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:18" (1/1) ... [2024-11-22 01:10:18,726 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:18" (1/1) ... [2024-11-22 01:10:18,736 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 01:10:18,736 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:18" (1/1) ... [2024-11-22 01:10:18,737 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:18" (1/1) ... [2024-11-22 01:10:18,740 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:18" (1/1) ... [2024-11-22 01:10:18,743 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:18" (1/1) ... [2024-11-22 01:10:18,746 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:18" (1/1) ... [2024-11-22 01:10:18,748 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:18" (1/1) ... [2024-11-22 01:10:18,752 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 01:10:18,753 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 01:10:18,754 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 01:10:18,755 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 01:10:18,756 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:18" (1/1) ... [2024-11-22 01:10:18,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 01:10:18,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:10:18,791 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 01:10:18,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 01:10:18,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 01:10:18,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 01:10:18,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 01:10:18,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 01:10:18,904 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 01:10:18,908 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 01:10:19,037 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-22 01:10:19,038 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 01:10:19,052 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 01:10:19,053 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-22 01:10:19,054 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:10:19 BoogieIcfgContainer [2024-11-22 01:10:19,054 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 01:10:19,057 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 01:10:19,057 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 01:10:19,060 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 01:10:19,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:10:18" (1/3) ... [2024-11-22 01:10:19,061 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ac874d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:10:19, skipping insertion in model container [2024-11-22 01:10:19,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:18" (2/3) ... [2024-11-22 01:10:19,062 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ac874d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:10:19, skipping insertion in model container [2024-11-22 01:10:19,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:10:19" (3/3) ... [2024-11-22 01:10:19,064 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_3.c [2024-11-22 01:10:19,082 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 01:10:19,083 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 01:10:19,149 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 01:10:19,157 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;@2558e656, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 01:10:19,158 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 01:10:19,162 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:10:19,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-22 01:10:19,168 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:10:19,168 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-22 01:10:19,169 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:10:19,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:10:19,174 INFO L85 PathProgramCache]: Analyzing trace with hash 28726596, now seen corresponding path program 1 times [2024-11-22 01:10:19,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:10:19,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428563542] [2024-11-22 01:10:19,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:10:19,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:10:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:10:19,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:10:19,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:10:19,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428563542] [2024-11-22 01:10:19,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428563542] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:10:19,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:10:19,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 01:10:19,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564561986] [2024-11-22 01:10:19,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:10:19,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 01:10:19,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:10:19,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 01:10:19,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 01:10:19,358 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:10:19,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:10:19,369 INFO L93 Difference]: Finished difference Result 28 states and 40 transitions. [2024-11-22 01:10:19,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 01:10:19,371 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-22 01:10:19,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:10:19,377 INFO L225 Difference]: With dead ends: 28 [2024-11-22 01:10:19,377 INFO L226 Difference]: Without dead ends: 11 [2024-11-22 01:10:19,379 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 [2024-11-22 01:10:19,383 INFO L432 NwaCegarLoop]: 17 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, 17 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:10:19,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:10:19,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2024-11-22 01:10:19,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2024-11-22 01:10:19,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:10:19,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2024-11-22 01:10:19,412 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 5 [2024-11-22 01:10:19,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:10:19,413 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2024-11-22 01:10:19,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:10:19,413 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2024-11-22 01:10:19,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-22 01:10:19,413 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:10:19,413 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-22 01:10:19,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 01:10:19,414 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:10:19,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:10:19,415 INFO L85 PathProgramCache]: Analyzing trace with hash 28697766, now seen corresponding path program 1 times [2024-11-22 01:10:19,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:10:19,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585682265] [2024-11-22 01:10:19,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:10:19,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:10:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:10:19,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:10:19,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:10:19,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585682265] [2024-11-22 01:10:19,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585682265] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:10:19,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:10:19,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 01:10:19,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251868153] [2024-11-22 01:10:19,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:10:19,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 01:10:19,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:10:19,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 01:10:19,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 01:10:19,508 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:10:19,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:10:19,522 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2024-11-22 01:10:19,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 01:10:19,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-22 01:10:19,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:10:19,523 INFO L225 Difference]: With dead ends: 20 [2024-11-22 01:10:19,523 INFO L226 Difference]: Without dead ends: 17 [2024-11-22 01:10:19,525 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 01:10:19,526 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:10:19,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 19 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:10:19,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-22 01:10:19,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2024-11-22 01:10:19,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:10:19,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2024-11-22 01:10:19,531 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 5 [2024-11-22 01:10:19,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:10:19,532 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2024-11-22 01:10:19,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:10:19,532 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2024-11-22 01:10:19,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-22 01:10:19,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:10:19,533 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:10:19,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 01:10:19,534 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:10:19,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:10:19,535 INFO L85 PathProgramCache]: Analyzing trace with hash 269702254, now seen corresponding path program 1 times [2024-11-22 01:10:19,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:10:19,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743664497] [2024-11-22 01:10:19,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:10:19,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:10:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:10:19,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:10:19,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:10:19,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743664497] [2024-11-22 01:10:19,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743664497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:10:19,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:10:19,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 01:10:19,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192613729] [2024-11-22 01:10:19,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:10:19,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 01:10:19,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:10:19,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 01:10:19,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 01:10:19,639 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:10:19,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:10:19,653 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2024-11-22 01:10:19,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 01:10:19,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-22 01:10:19,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:10:19,655 INFO L225 Difference]: With dead ends: 25 [2024-11-22 01:10:19,655 INFO L226 Difference]: Without dead ends: 16 [2024-11-22 01:10:19,655 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 01:10:19,656 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:10:19,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 18 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:10:19,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-22 01:10:19,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 13. [2024-11-22 01:10:19,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:10:19,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2024-11-22 01:10:19,661 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 8 [2024-11-22 01:10:19,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:10:19,661 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2024-11-22 01:10:19,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:10:19,662 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2024-11-22 01:10:19,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-22 01:10:19,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:10:19,662 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:10:19,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 01:10:19,674 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:10:19,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:10:19,674 INFO L85 PathProgramCache]: Analyzing trace with hash 904437762, now seen corresponding path program 1 times [2024-11-22 01:10:19,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:10:19,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711890941] [2024-11-22 01:10:19,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:10:19,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:10:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:10:19,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:10:19,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:10:19,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711890941] [2024-11-22 01:10:19,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711890941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:10:19,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:10:19,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 01:10:19,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151427801] [2024-11-22 01:10:19,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:10:19,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 01:10:19,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:10:19,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 01:10:19,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 01:10:19,740 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:10:19,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:10:19,756 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2024-11-22 01:10:19,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 01:10:19,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-22 01:10:19,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:10:19,758 INFO L225 Difference]: With dead ends: 25 [2024-11-22 01:10:19,758 INFO L226 Difference]: Without dead ends: 15 [2024-11-22 01:10:19,759 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 01:10:19,760 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:10:19,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 18 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:10:19,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-22 01:10:19,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2024-11-22 01:10:19,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:10:19,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2024-11-22 01:10:19,765 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 11 [2024-11-22 01:10:19,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:10:19,766 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2024-11-22 01:10:19,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:10:19,766 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2024-11-22 01:10:19,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-22 01:10:19,767 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:10:19,767 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:10:19,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 01:10:19,767 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:10:19,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:10:19,768 INFO L85 PathProgramCache]: Analyzing trace with hash -2012164800, now seen corresponding path program 1 times [2024-11-22 01:10:19,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:10:19,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598689672] [2024-11-22 01:10:19,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:10:19,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:10:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:10:19,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:10:19,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:10:19,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598689672] [2024-11-22 01:10:19,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598689672] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:10:19,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913291336] [2024-11-22 01:10:19,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:10:19,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:10:19,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:10:19,832 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:10:19,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 01:10:19,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:10:19,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 01:10:19,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:10:19,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:10:19,944 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:10:19,975 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:10:19,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913291336] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:10:19,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 01:10:19,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-22 01:10:19,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505323033] [2024-11-22 01:10:19,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 01:10:19,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 01:10:19,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:10:19,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 01:10:19,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:10:19,981 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:10:20,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:10:20,027 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2024-11-22 01:10:20,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 01:10:20,027 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-22 01:10:20,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:10:20,028 INFO L225 Difference]: With dead ends: 31 [2024-11-22 01:10:20,028 INFO L226 Difference]: Without dead ends: 20 [2024-11-22 01:10:20,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:10:20,030 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:10:20,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 32 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:10:20,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-22 01:10:20,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-22 01:10:20,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:10:20,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2024-11-22 01:10:20,038 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 13 [2024-11-22 01:10:20,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:10:20,039 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2024-11-22 01:10:20,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:10:20,039 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2024-11-22 01:10:20,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-22 01:10:20,039 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:10:20,040 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:10:20,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 01:10:20,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:10:20,241 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:10:20,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:10:20,241 INFO L85 PathProgramCache]: Analyzing trace with hash -924137478, now seen corresponding path program 2 times [2024-11-22 01:10:20,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:10:20,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383243546] [2024-11-22 01:10:20,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 01:10:20,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:10:20,261 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 01:10:20,261 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:10:20,313 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-22 01:10:20,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:10:20,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383243546] [2024-11-22 01:10:20,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383243546] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:10:20,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819232277] [2024-11-22 01:10:20,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 01:10:20,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:10:20,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:10:20,317 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:10:20,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 01:10:20,360 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 01:10:20,361 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:10:20,361 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 01:10:20,363 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:10:20,440 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:10:20,442 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:10:20,524 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:10:20,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819232277] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:10:20,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 01:10:20,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 10 [2024-11-22 01:10:20,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847631286] [2024-11-22 01:10:20,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 01:10:20,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 01:10:20,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:10:20,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 01:10:20,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-22 01:10:20,530 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:10:20,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:10:20,735 INFO L93 Difference]: Finished difference Result 76 states and 91 transitions. [2024-11-22 01:10:20,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-22 01:10:20,737 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-22 01:10:20,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:10:20,738 INFO L225 Difference]: With dead ends: 76 [2024-11-22 01:10:20,738 INFO L226 Difference]: Without dead ends: 59 [2024-11-22 01:10:20,739 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=294, Unknown=0, NotChecked=0, Total=462 [2024-11-22 01:10:20,740 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 21 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:10:20,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 39 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:10:20,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-22 01:10:20,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 42. [2024-11-22 01:10:20,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:10:20,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2024-11-22 01:10:20,757 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 19 [2024-11-22 01:10:20,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:10:20,758 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2024-11-22 01:10:20,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:10:20,758 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2024-11-22 01:10:20,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-22 01:10:20,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:10:20,760 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-22 01:10:20,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 01:10:20,961 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,SelfDestructingSolverStorable5 [2024-11-22 01:10:20,961 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:10:20,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:10:20,962 INFO L85 PathProgramCache]: Analyzing trace with hash 2102543686, now seen corresponding path program 3 times [2024-11-22 01:10:20,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:10:20,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400763020] [2024-11-22 01:10:20,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 01:10:20,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:10:21,007 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2024-11-22 01:10:21,008 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:10:21,098 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-22 01:10:21,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:10:21,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400763020] [2024-11-22 01:10:21,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400763020] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:10:21,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666325860] [2024-11-22 01:10:21,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 01:10:21,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:10:21,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:10:21,102 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:10:21,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 01:10:21,151 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2024-11-22 01:10:21,151 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:10:21,152 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 01:10:21,154 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:10:21,204 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 93 proven. 1 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-22 01:10:21,205 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:10:21,242 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 93 proven. 1 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-22 01:10:21,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666325860] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:10:21,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 01:10:21,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-22 01:10:21,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988706839] [2024-11-22 01:10:21,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 01:10:21,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 01:10:21,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:10:21,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 01:10:21,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:10:21,245 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:10:21,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:10:21,274 INFO L93 Difference]: Finished difference Result 155 states and 173 transitions. [2024-11-22 01:10:21,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 01:10:21,275 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-22 01:10:21,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:10:21,276 INFO L225 Difference]: With dead ends: 155 [2024-11-22 01:10:21,276 INFO L226 Difference]: Without dead ends: 132 [2024-11-22 01:10:21,277 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:10:21,277 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 8 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:10:21,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 24 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:10:21,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-22 01:10:21,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2024-11-22 01:10:21,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.083969465648855) internal successors, (142), 131 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:10:21,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 142 transitions. [2024-11-22 01:10:21,307 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 142 transitions. Word has length 41 [2024-11-22 01:10:21,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:10:21,308 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 142 transitions. [2024-11-22 01:10:21,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:10:21,308 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 142 transitions. [2024-11-22 01:10:21,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-22 01:10:21,312 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:10:21,312 INFO L215 NwaCegarLoop]: trace histogram [48, 48, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-22 01:10:21,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 01:10:21,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:10:21,513 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:10:21,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:10:21,514 INFO L85 PathProgramCache]: Analyzing trace with hash -538489946, now seen corresponding path program 4 times [2024-11-22 01:10:21,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:10:21,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980080825] [2024-11-22 01:10:21,514 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 01:10:21,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:10:21,579 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 01:10:21,580 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:10:21,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2745 backedges. 1403 proven. 526 refuted. 0 times theorem prover too weak. 816 trivial. 0 not checked. [2024-11-22 01:10:21,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:10:21,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980080825] [2024-11-22 01:10:21,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980080825] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:10:21,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400724075] [2024-11-22 01:10:21,828 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 01:10:21,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:10:21,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:10:21,849 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:10:21,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 01:10:21,915 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 01:10:21,916 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:10:21,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 01:10:21,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:10:22,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2745 backedges. 1403 proven. 526 refuted. 0 times theorem prover too weak. 816 trivial. 0 not checked. [2024-11-22 01:10:22,036 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:10:22,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2745 backedges. 1403 proven. 526 refuted. 0 times theorem prover too weak. 816 trivial. 0 not checked. [2024-11-22 01:10:22,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400724075] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:10:22,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 01:10:22,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2024-11-22 01:10:22,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352275445] [2024-11-22 01:10:22,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 01:10:22,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 01:10:22,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:10:22,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 01:10:22,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-22 01:10:22,176 INFO L87 Difference]: Start difference. First operand 132 states and 142 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:10:22,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:10:22,224 INFO L93 Difference]: Finished difference Result 260 states and 283 transitions. [2024-11-22 01:10:22,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 01:10:22,226 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2024-11-22 01:10:22,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:10:22,228 INFO L225 Difference]: With dead ends: 260 [2024-11-22 01:10:22,228 INFO L226 Difference]: Without dead ends: 192 [2024-11-22 01:10:22,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 257 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-22 01:10:22,232 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:10:22,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 38 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:10:22,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-22 01:10:22,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2024-11-22 01:10:22,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.0785340314136125) internal successors, (206), 191 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:10:22,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 206 transitions. [2024-11-22 01:10:22,268 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 206 transitions. Word has length 131 [2024-11-22 01:10:22,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:10:22,268 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 206 transitions. [2024-11-22 01:10:22,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:10:22,269 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 206 transitions. [2024-11-22 01:10:22,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-22 01:10:22,274 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:10:22,275 INFO L215 NwaCegarLoop]: trace histogram [72, 72, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-22 01:10:22,283 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 01:10:22,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:10:22,476 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:10:22,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:10:22,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1969636954, now seen corresponding path program 5 times [2024-11-22 01:10:22,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:10:22,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103392073] [2024-11-22 01:10:22,477 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 01:10:22,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:10:22,523 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 68 check-sat command(s) [2024-11-22 01:10:22,523 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:10:22,690 INFO L134 CoverageAnalysis]: Checked inductivity of 6203 backedges. 0 proven. 3149 refuted. 0 times theorem prover too weak. 3054 trivial. 0 not checked. [2024-11-22 01:10:22,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:10:22,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103392073] [2024-11-22 01:10:22,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103392073] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:10:22,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871858605] [2024-11-22 01:10:22,691 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 01:10:22,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:10:22,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:10:22,693 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:10:22,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 01:10:22,807 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 68 check-sat command(s) [2024-11-22 01:10:22,807 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:10:22,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 01:10:22,816 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:10:23,047 INFO L134 CoverageAnalysis]: Checked inductivity of 6203 backedges. 0 proven. 3149 refuted. 0 times theorem prover too weak. 3054 trivial. 0 not checked. [2024-11-22 01:10:23,049 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:10:23,298 INFO L134 CoverageAnalysis]: Checked inductivity of 6203 backedges. 0 proven. 3149 refuted. 0 times theorem prover too weak. 3054 trivial. 0 not checked. [2024-11-22 01:10:23,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871858605] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:10:23,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 01:10:23,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-22 01:10:23,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974930546] [2024-11-22 01:10:23,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 01:10:23,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 01:10:23,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:10:23,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 01:10:23,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-22 01:10:23,301 INFO L87 Difference]: Start difference. First operand 192 states and 206 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:10:23,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:10:23,366 INFO L93 Difference]: Finished difference Result 567 states and 612 transitions. [2024-11-22 01:10:23,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 01:10:23,367 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2024-11-22 01:10:23,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:10:23,371 INFO L225 Difference]: With dead ends: 567 [2024-11-22 01:10:23,374 INFO L226 Difference]: Without dead ends: 564 [2024-11-22 01:10:23,375 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-22 01:10:23,375 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 14 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:10:23,375 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 45 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:10:23,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2024-11-22 01:10:23,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2024-11-22 01:10:23,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 563 states have (on average 1.0763765541740675) internal successors, (606), 563 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:10:23,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 606 transitions. [2024-11-22 01:10:23,441 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 606 transitions. Word has length 191 [2024-11-22 01:10:23,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:10:23,442 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 606 transitions. [2024-11-22 01:10:23,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:10:23,442 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 606 transitions. [2024-11-22 01:10:23,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 564 [2024-11-22 01:10:23,456 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:10:23,456 INFO L215 NwaCegarLoop]: trace histogram [216, 216, 36, 36, 36, 6, 6, 6, 1, 1, 1, 1, 1] [2024-11-22 01:10:23,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 01:10:23,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:10:23,657 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:10:23,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:10:23,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1072389210, now seen corresponding path program 6 times [2024-11-22 01:10:23,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:10:23,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007863360] [2024-11-22 01:10:23,658 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 01:10:23,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:10:23,770 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2024-11-22 01:10:23,770 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:10:24,255 INFO L134 CoverageAnalysis]: Checked inductivity of 56373 backedges. 16183 proven. 0 refuted. 0 times theorem prover too weak. 40190 trivial. 0 not checked. [2024-11-22 01:10:24,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:10:24,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007863360] [2024-11-22 01:10:24,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007863360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:10:24,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:10:24,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-22 01:10:24,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349558061] [2024-11-22 01:10:24,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:10:24,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 01:10:24,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:10:24,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 01:10:24,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-22 01:10:24,258 INFO L87 Difference]: Start difference. First operand 564 states and 606 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:10:24,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:10:24,329 INFO L93 Difference]: Finished difference Result 564 states and 606 transitions. [2024-11-22 01:10:24,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 01:10:24,330 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 563 [2024-11-22 01:10:24,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:10:24,331 INFO L225 Difference]: With dead ends: 564 [2024-11-22 01:10:24,332 INFO L226 Difference]: Without dead ends: 0 [2024-11-22 01:10:24,333 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-22 01:10:24,334 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:10:24,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:10:24,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-22 01:10:24,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-22 01:10:24,335 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) [2024-11-22 01:10:24,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-22 01:10:24,336 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 563 [2024-11-22 01:10:24,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:10:24,336 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-22 01:10:24,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:10:24,336 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-22 01:10:24,336 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-22 01:10:24,340 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-22 01:10:24,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 01:10:24,343 INFO L407 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1] [2024-11-22 01:10:24,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-22 01:10:29,326 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-22 01:10:29,342 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:10:29 BoogieIcfgContainer [2024-11-22 01:10:29,342 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-22 01:10:29,343 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-22 01:10:29,343 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-22 01:10:29,343 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-22 01:10:29,343 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:10:19" (3/4) ... [2024-11-22 01:10:29,345 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-22 01:10:29,353 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-11-22 01:10:29,353 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-22 01:10:29,354 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-22 01:10:29,354 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-22 01:10:29,439 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-22 01:10:29,440 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-22 01:10:29,440 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-22 01:10:29,441 INFO L158 Benchmark]: Toolchain (without parser) took 11024.61ms. Allocated memory was 151.0MB in the beginning and 411.0MB in the end (delta: 260.0MB). Free memory was 97.7MB in the beginning and 297.0MB in the end (delta: -199.2MB). Peak memory consumption was 62.4MB. Max. memory is 16.1GB. [2024-11-22 01:10:29,441 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 151.0MB. Free memory was 113.7MB in the beginning and 113.6MB in the end (delta: 33.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 01:10:29,442 INFO L158 Benchmark]: CACSL2BoogieTranslator took 262.07ms. Allocated memory is still 151.0MB. Free memory was 97.2MB in the beginning and 85.1MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-22 01:10:29,442 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.96ms. Allocated memory is still 151.0MB. Free memory was 85.1MB in the beginning and 84.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 01:10:29,442 INFO L158 Benchmark]: Boogie Preprocessor took 38.75ms. Allocated memory is still 151.0MB. Free memory was 84.0MB in the beginning and 82.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 01:10:29,442 INFO L158 Benchmark]: RCFGBuilder took 300.73ms. Allocated memory is still 151.0MB. Free memory was 82.4MB in the beginning and 72.0MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-22 01:10:29,443 INFO L158 Benchmark]: TraceAbstraction took 10285.54ms. Allocated memory was 151.0MB in the beginning and 411.0MB in the end (delta: 260.0MB). Free memory was 71.4MB in the beginning and 301.2MB in the end (delta: -229.8MB). Peak memory consumption was 199.4MB. Max. memory is 16.1GB. [2024-11-22 01:10:29,443 INFO L158 Benchmark]: Witness Printer took 97.83ms. Allocated memory is still 411.0MB. Free memory was 301.2MB in the beginning and 297.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-22 01:10:29,446 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 151.0MB. Free memory was 113.7MB in the beginning and 113.6MB in the end (delta: 33.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 262.07ms. Allocated memory is still 151.0MB. Free memory was 97.2MB in the beginning and 85.1MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.96ms. Allocated memory is still 151.0MB. Free memory was 85.1MB in the beginning and 84.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.75ms. Allocated memory is still 151.0MB. Free memory was 84.0MB in the beginning and 82.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 300.73ms. Allocated memory is still 151.0MB. Free memory was 82.4MB in the beginning and 72.0MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 10285.54ms. Allocated memory was 151.0MB in the beginning and 411.0MB in the end (delta: 260.0MB). Free memory was 71.4MB in the beginning and 301.2MB in the end (delta: -229.8MB). Peak memory consumption was 199.4MB. Max. memory is 16.1GB. * Witness Printer took 97.83ms. Allocated memory is still 411.0MB. Free memory was 301.2MB in the beginning and 297.0MB 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: 29]: 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 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.2s, OverallIterations: 10, TraceHistogramMax: 216, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 61 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 61 mSDsluCounter, 258 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 153 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 183 IncrementalHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 105 mSDtfsCounter, 183 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 841 GetRequests, 779 SyntacticMatches, 8 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=564occurred in iteration=9, InterpolantAutomatonStates: 70, 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, 10 MinimizatonAttempts, 26 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 1382 NumberOfCodeBlocks, 1125 NumberOfCodeBlocksAsserted, 277 NumberOfCheckSat, 1757 ConstructedInterpolants, 0 QuantifiedInterpolants, 3712 SizeOfPredicates, 0 NumberOfNonLiveVariables, 734 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 20 InterpolantComputations, 5 PerfectInterpolantSequences, 72723/83787 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: 21]: Loop Invariant Derived loop invariant: (((a <= 6) && (6 == b)) && (6 == c)) - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (((a <= 5) && (b <= 5)) && (c <= 6)) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (((a <= 5) && (b <= 6)) && (6 == c)) RESULT: Ultimate proved your program to be correct! [2024-11-22 01:10:29,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE