./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/ps5-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench/ps5-ll.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 1d0411df2a3b388d2db53c57aaa1f7219c19c9d74992ef1ed00eab4b9b56cbed --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 22:27:48,355 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 22:27:48,412 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 22:27:48,416 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 22:27:48,417 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 22:27:48,437 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 22:27:48,440 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 22:27:48,440 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 22:27:48,440 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 22:27:48,441 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 22:27:48,441 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 22:27:48,442 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 22:27:48,442 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 22:27:48,443 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 22:27:48,443 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 22:27:48,444 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 22:27:48,444 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 22:27:48,444 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 22:27:48,444 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 22:27:48,445 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 22:27:48,445 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 22:27:48,445 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 22:27:48,446 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 22:27:48,446 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 22:27:48,446 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 22:27:48,447 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 22:27:48,447 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 22:27:48,447 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 22:27:48,447 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 22:27:48,448 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 22:27:48,448 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 22:27:48,448 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 22:27:48,448 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:27:48,449 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 22:27:48,449 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 22:27:48,449 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 22:27:48,449 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 22:27:48,450 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 22:27:48,450 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 22:27:48,450 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 22:27:48,450 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 22:27:48,450 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 22:27:48,451 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d0411df2a3b388d2db53c57aaa1f7219c19c9d74992ef1ed00eab4b9b56cbed [2024-11-09 22:27:48,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 22:27:48,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 22:27:48,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 22:27:48,665 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 22:27:48,666 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 22:27:48,666 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/ps5-ll.c [2024-11-09 22:27:49,963 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 22:27:50,105 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 22:27:50,106 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/ps5-ll.c [2024-11-09 22:27:50,112 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/207b52d55/8aabb9b8f66e4bc1bbfea88a351a8dec/FLAGd21614a82 [2024-11-09 22:27:50,533 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/207b52d55/8aabb9b8f66e4bc1bbfea88a351a8dec [2024-11-09 22:27:50,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 22:27:50,536 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 22:27:50,537 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 22:27:50,537 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 22:27:50,541 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 22:27:50,541 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:27:50" (1/1) ... [2024-11-09 22:27:50,542 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c827bd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:27:50, skipping insertion in model container [2024-11-09 22:27:50,542 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:27:50" (1/1) ... [2024-11-09 22:27:50,555 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 22:27:50,774 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/ps5-ll.c[458,471] [2024-11-09 22:27:50,807 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:27:50,817 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 22:27:50,828 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/ps5-ll.c[458,471] [2024-11-09 22:27:50,835 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:27:50,849 INFO L204 MainTranslator]: Completed translation [2024-11-09 22:27:50,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:27:50 WrapperNode [2024-11-09 22:27:50,850 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 22:27:50,851 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 22:27:50,851 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 22:27:50,851 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 22:27:50,857 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:27:50" (1/1) ... [2024-11-09 22:27:50,862 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:27:50" (1/1) ... [2024-11-09 22:27:50,877 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 37 [2024-11-09 22:27:50,877 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 22:27:50,878 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 22:27:50,878 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 22:27:50,878 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 22:27:50,885 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:27:50" (1/1) ... [2024-11-09 22:27:50,885 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:27:50" (1/1) ... [2024-11-09 22:27:50,886 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:27:50" (1/1) ... [2024-11-09 22:27:50,897 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]. [2024-11-09 22:27:50,900 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:27:50" (1/1) ... [2024-11-09 22:27:50,900 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:27:50" (1/1) ... [2024-11-09 22:27:50,902 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:27:50" (1/1) ... [2024-11-09 22:27:50,904 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:27:50" (1/1) ... [2024-11-09 22:27:50,905 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:27:50" (1/1) ... [2024-11-09 22:27:50,906 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:27:50" (1/1) ... [2024-11-09 22:27:50,907 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 22:27:50,907 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 22:27:50,907 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 22:27:50,908 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 22:27:50,908 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:27:50" (1/1) ... [2024-11-09 22:27:50,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:27:50,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:27:50,941 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) [2024-11-09 22:27:50,943 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 [2024-11-09 22:27:50,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 22:27:50,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 22:27:50,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 22:27:50,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 22:27:50,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 22:27:50,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 22:27:51,022 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 22:27:51,023 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 22:27:51,112 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-09 22:27:51,112 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 22:27:51,121 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 22:27:51,121 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 22:27:51,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:27:51 BoogieIcfgContainer [2024-11-09 22:27:51,122 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 22:27:51,123 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 22:27:51,123 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 22:27:51,125 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 22:27:51,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:27:50" (1/3) ... [2024-11-09 22:27:51,126 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f24e92a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:27:51, skipping insertion in model container [2024-11-09 22:27:51,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:27:50" (2/3) ... [2024-11-09 22:27:51,127 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f24e92a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:27:51, skipping insertion in model container [2024-11-09 22:27:51,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:27:51" (3/3) ... [2024-11-09 22:27:51,128 INFO L112 eAbstractionObserver]: Analyzing ICFG ps5-ll.c [2024-11-09 22:27:51,142 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 22:27:51,142 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 22:27:51,181 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 22:27:51,190 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;@efdf9da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 22:27:51,190 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 22:27:51,193 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 22:27:51,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 22:27:51,200 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:27:51,200 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:27:51,201 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:27:51,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:27:51,206 INFO L85 PathProgramCache]: Analyzing trace with hash 353857931, now seen corresponding path program 1 times [2024-11-09 22:27:51,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:27:51,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493367023] [2024-11-09 22:27:51,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:27:51,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:27:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:27:51,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:27:51,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:27:51,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493367023] [2024-11-09 22:27:51,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493367023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:27:51,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:27:51,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 22:27:51,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050471661] [2024-11-09 22:27:51,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:27:51,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 22:27:51,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:27:51,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 22:27:51,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 22:27:51,376 INFO L87 Difference]: Start difference. First operand has 21 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:27:51,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:27:51,388 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2024-11-09 22:27:51,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 22:27:51,390 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-09 22:27:51,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:27:51,394 INFO L225 Difference]: With dead ends: 39 [2024-11-09 22:27:51,395 INFO L226 Difference]: Without dead ends: 17 [2024-11-09 22:27:51,397 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 [2024-11-09 22:27:51,399 INFO L432 NwaCegarLoop]: 23 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, 23 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 [2024-11-09 22:27:51,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:27:51,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-09 22:27:51,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-09 22:27:51,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 22:27:51,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2024-11-09 22:27:51,425 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 10 [2024-11-09 22:27:51,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:27:51,425 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2024-11-09 22:27:51,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:27:51,425 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2024-11-09 22:27:51,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 22:27:51,426 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:27:51,426 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:27:51,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 22:27:51,427 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:27:51,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:27:51,427 INFO L85 PathProgramCache]: Analyzing trace with hash 982434591, now seen corresponding path program 1 times [2024-11-09 22:27:51,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:27:51,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620189620] [2024-11-09 22:27:51,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:27:51,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:27:51,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:27:51,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [127176688] [2024-11-09 22:27:51,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:27:51,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:27:51,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:27:51,462 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) [2024-11-09 22:27:51,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 22:27:51,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:27:51,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 22:27:51,537 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:27:51,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:27:51,637 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 22:27:51,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:27:51,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620189620] [2024-11-09 22:27:51,642 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:27:51,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127176688] [2024-11-09 22:27:51,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127176688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:27:51,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:27:51,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:27:51,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054104893] [2024-11-09 22:27:51,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:27:51,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:27:51,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:27:51,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:27:51,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:27:51,645 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:27:51,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:27:51,692 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2024-11-09 22:27:51,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:27:51,693 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-09 22:27:51,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:27:51,693 INFO L225 Difference]: With dead ends: 30 [2024-11-09 22:27:51,693 INFO L226 Difference]: Without dead ends: 25 [2024-11-09 22:27:51,694 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:27:51,695 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 4 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:27:51,695 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 53 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:27:51,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-09 22:27:51,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-09 22:27:51,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 22:27:51,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2024-11-09 22:27:51,700 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 11 [2024-11-09 22:27:51,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:27:51,701 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2024-11-09 22:27:51,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:27:51,701 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2024-11-09 22:27:51,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 22:27:51,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:27:51,702 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:27:51,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 22:27:51,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:27:51,906 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:27:51,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:27:51,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1958378556, now seen corresponding path program 1 times [2024-11-09 22:27:51,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:27:51,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587673817] [2024-11-09 22:27:51,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:27:51,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:27:51,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:27:51,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1901948635] [2024-11-09 22:27:51,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:27:51,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:27:51,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:27:51,929 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) [2024-11-09 22:27:51,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 22:27:51,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:27:51,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 22:27:51,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:27:52,046 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:27:52,047 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:27:52,155 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 22:27:52,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:27:52,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587673817] [2024-11-09 22:27:52,157 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:27:52,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901948635] [2024-11-09 22:27:52,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901948635] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 22:27:52,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 22:27:52,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-11-09 22:27:52,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339907655] [2024-11-09 22:27:52,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:27:52,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:27:52,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:27:52,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:27:52,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 22:27:52,164 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 22:27:52,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:27:52,207 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2024-11-09 22:27:52,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:27:52,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2024-11-09 22:27:52,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:27:52,208 INFO L225 Difference]: With dead ends: 32 [2024-11-09 22:27:52,209 INFO L226 Difference]: Without dead ends: 27 [2024-11-09 22:27:52,209 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 22:27:52,210 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 4 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:27:52,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 48 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:27:52,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-09 22:27:52,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-09 22:27:52,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 22:27:52,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2024-11-09 22:27:52,223 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2024-11-09 22:27:52,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:27:52,223 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2024-11-09 22:27:52,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 22:27:52,224 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2024-11-09 22:27:52,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-09 22:27:52,225 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:27:52,225 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:27:52,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 22:27:52,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-09 22:27:52,430 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:27:52,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:27:52,431 INFO L85 PathProgramCache]: Analyzing trace with hash -219977158, now seen corresponding path program 1 times [2024-11-09 22:27:52,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:27:52,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679172207] [2024-11-09 22:27:52,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:27:52,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:27:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:27:52,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1125189226] [2024-11-09 22:27:52,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:27:52,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:27:52,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:27:52,463 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) [2024-11-09 22:27:52,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 22:27:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:27:52,512 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 22:27:52,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:27:52,652 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 22:27:52,654 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:27:52,761 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 22:27:52,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:27:52,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679172207] [2024-11-09 22:27:52,762 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:27:52,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125189226] [2024-11-09 22:27:52,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125189226] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:27:52,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 22:27:52,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-11-09 22:27:52,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640281445] [2024-11-09 22:27:52,762 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 22:27:52,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 22:27:52,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:27:52,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 22:27:52,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-09 22:27:52,764 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 10 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 6 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 22:27:52,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:27:52,851 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2024-11-09 22:27:52,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 22:27:52,852 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 6 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 30 [2024-11-09 22:27:52,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:27:52,853 INFO L225 Difference]: With dead ends: 48 [2024-11-09 22:27:52,853 INFO L226 Difference]: Without dead ends: 39 [2024-11-09 22:27:52,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-09 22:27:52,854 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 1 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:27:52,854 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 95 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:27:52,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-09 22:27:52,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-09 22:27:52,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 22:27:52,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2024-11-09 22:27:52,863 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 30 [2024-11-09 22:27:52,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:27:52,864 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2024-11-09 22:27:52,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 6 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 22:27:52,864 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2024-11-09 22:27:52,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-09 22:27:52,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:27:52,865 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:27:52,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 22:27:53,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:27:53,070 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:27:53,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:27:53,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1645617021, now seen corresponding path program 2 times [2024-11-09 22:27:53,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:27:53,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794144026] [2024-11-09 22:27:53,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:27:53,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:27:53,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:27:53,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1008186701] [2024-11-09 22:27:53,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:27:53,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:27:53,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:27:53,111 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) [2024-11-09 22:27:53,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 22:27:53,230 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:27:53,231 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:27:53,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 22:27:53,238 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:27:53,371 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 12 proven. 40 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-09 22:27:53,371 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:27:53,536 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 12 proven. 40 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-09 22:27:53,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:27:53,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794144026] [2024-11-09 22:27:53,536 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:27:53,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008186701] [2024-11-09 22:27:53,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008186701] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:27:53,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 22:27:53,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2024-11-09 22:27:53,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934684215] [2024-11-09 22:27:53,537 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 22:27:53,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 22:27:53,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:27:53,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 22:27:53,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-11-09 22:27:53,539 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 16 states, 14 states have (on average 3.0) internal successors, (42), 15 states have internal predecessors, (42), 12 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-09 22:27:53,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:27:53,763 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2024-11-09 22:27:53,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 22:27:53,764 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.0) internal successors, (42), 15 states have internal predecessors, (42), 12 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 54 [2024-11-09 22:27:53,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:27:53,764 INFO L225 Difference]: With dead ends: 45 [2024-11-09 22:27:53,764 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 22:27:53,765 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 90 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2024-11-09 22:27:53,765 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:27:53,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 190 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:27:53,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 22:27:53,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 22:27:53,766 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) [2024-11-09 22:27:53,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 22:27:53,766 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2024-11-09 22:27:53,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:27:53,767 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 22:27:53,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.0) internal successors, (42), 15 states have internal predecessors, (42), 12 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-09 22:27:53,767 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 22:27:53,767 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 22:27:53,769 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 22:27:53,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 22:27:53,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:27:53,976 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2024-11-09 22:27:53,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-09 22:27:54,145 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 22:27:54,158 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 10:27:54 BoogieIcfgContainer [2024-11-09 22:27:54,159 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 22:27:54,159 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 22:27:54,159 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 22:27:54,159 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 22:27:54,160 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:27:51" (3/4) ... [2024-11-09 22:27:54,161 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-09 22:27:54,164 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-09 22:27:54,166 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-11-09 22:27:54,167 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-09 22:27:54,167 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-09 22:27:54,167 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 22:27:54,229 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-09 22:27:54,229 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-09 22:27:54,229 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 22:27:54,230 INFO L158 Benchmark]: Toolchain (without parser) took 3693.80ms. Allocated memory was 167.8MB in the beginning and 222.3MB in the end (delta: 54.5MB). Free memory was 97.0MB in the beginning and 144.1MB in the end (delta: -47.2MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2024-11-09 22:27:54,230 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 167.8MB. Free memory was 122.6MB in the beginning and 122.4MB in the end (delta: 156.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 22:27:54,234 INFO L158 Benchmark]: CACSL2BoogieTranslator took 313.54ms. Allocated memory is still 167.8MB. Free memory was 96.7MB in the beginning and 134.8MB in the end (delta: -38.1MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. [2024-11-09 22:27:54,234 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.75ms. Allocated memory is still 167.8MB. Free memory was 134.8MB in the beginning and 133.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 22:27:54,234 INFO L158 Benchmark]: Boogie Preprocessor took 28.85ms. Allocated memory is still 167.8MB. Free memory was 133.2MB in the beginning and 131.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 22:27:54,235 INFO L158 Benchmark]: IcfgBuilder took 214.32ms. Allocated memory is still 167.8MB. Free memory was 131.2MB in the beginning and 120.1MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-09 22:27:54,235 INFO L158 Benchmark]: TraceAbstraction took 3035.69ms. Allocated memory was 167.8MB in the beginning and 222.3MB in the end (delta: 54.5MB). Free memory was 119.5MB in the beginning and 149.3MB in the end (delta: -29.8MB). Peak memory consumption was 27.6MB. Max. memory is 16.1GB. [2024-11-09 22:27:54,235 INFO L158 Benchmark]: Witness Printer took 70.23ms. Allocated memory is still 222.3MB. Free memory was 149.3MB in the beginning and 144.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 22:27:54,236 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 167.8MB. Free memory was 122.6MB in the beginning and 122.4MB in the end (delta: 156.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 313.54ms. Allocated memory is still 167.8MB. Free memory was 96.7MB in the beginning and 134.8MB in the end (delta: -38.1MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.75ms. Allocated memory is still 167.8MB. Free memory was 134.8MB in the beginning and 133.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.85ms. Allocated memory is still 167.8MB. Free memory was 133.2MB in the beginning and 131.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 214.32ms. Allocated memory is still 167.8MB. Free memory was 131.2MB in the beginning and 120.1MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3035.69ms. Allocated memory was 167.8MB in the beginning and 222.3MB in the end (delta: 54.5MB). Free memory was 119.5MB in the beginning and 149.3MB in the end (delta: -29.8MB). Peak memory consumption was 27.6MB. Max. memory is 16.1GB. * Witness Printer took 70.23ms. Allocated memory is still 222.3MB. Free memory was 149.3MB in the beginning and 144.1MB in the end (delta: 5.2MB). 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: 12]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 5, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 409 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 307 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 193 IncrementalHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 102 mSDtfsCounter, 193 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 223 GetRequests, 176 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=4, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 238 NumberOfCodeBlocks, 238 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 219 ConstructedInterpolants, 0 QuantifiedInterpolants, 1064 SizeOfPredicates, 6 NumberOfNonLiveVariables, 330 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 187/278 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: 27]: Location Invariant Derived location invariant: null - ProcedureContractResult [Line: 9]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-11-09 22:27:54,251 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