./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound5.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-scaling/geo1-ll_valuebound5.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 5fecc0272e3d3edda13fe6ca0a651d95cf8d16c414f426c1f8f27e509220a775 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 22:40:24,393 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 22:40:24,449 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 22:40:24,454 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 22:40:24,454 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 22:40:24,470 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 22:40:24,471 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 22:40:24,471 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 22:40:24,471 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 22:40:24,472 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 22:40:24,472 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 22:40:24,472 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 22:40:24,473 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 22:40:24,473 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 22:40:24,473 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 22:40:24,473 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 22:40:24,474 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 22:40:24,475 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 22:40:24,475 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 22:40:24,475 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 22:40:24,476 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 22:40:24,479 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 22:40:24,479 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 22:40:24,479 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 22:40:24,480 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 22:40:24,480 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 22:40:24,480 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 22:40:24,480 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 22:40:24,480 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 22:40:24,480 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 22:40:24,481 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 22:40:24,481 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 22:40:24,481 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:40:24,481 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 22:40:24,481 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 22:40:24,481 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 22:40:24,482 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 22:40:24,482 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 22:40:24,482 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 22:40:24,483 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 22:40:24,483 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 22:40:24,484 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 22:40:24,484 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fecc0272e3d3edda13fe6ca0a651d95cf8d16c414f426c1f8f27e509220a775 [2024-11-09 22:40:24,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 22:40:24,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 22:40:24,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 22:40:24,700 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 22:40:24,700 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 22:40:24,701 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound5.c [2024-11-09 22:40:25,909 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 22:40:26,054 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 22:40:26,055 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound5.c [2024-11-09 22:40:26,062 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fbbfbf1d/abeaaf1988f14b23a53b35eb64d50954/FLAG6c1408ed8 [2024-11-09 22:40:26,074 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fbbfbf1d/abeaaf1988f14b23a53b35eb64d50954 [2024-11-09 22:40:26,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 22:40:26,079 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 22:40:26,081 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 22:40:26,081 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 22:40:26,085 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 22:40:26,085 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:40:26" (1/1) ... [2024-11-09 22:40:26,086 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7eea8621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:26, skipping insertion in model container [2024-11-09 22:40:26,086 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:40:26" (1/1) ... [2024-11-09 22:40:26,102 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 22:40:26,245 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound5.c[546,559] [2024-11-09 22:40:26,258 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:40:26,266 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 22:40:26,276 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound5.c[546,559] [2024-11-09 22:40:26,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:40:26,295 INFO L204 MainTranslator]: Completed translation [2024-11-09 22:40:26,296 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:26 WrapperNode [2024-11-09 22:40:26,296 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 22:40:26,297 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 22:40:26,297 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 22:40:26,297 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 22:40:26,301 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:26" (1/1) ... [2024-11-09 22:40:26,306 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:26" (1/1) ... [2024-11-09 22:40:26,319 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2024-11-09 22:40:26,320 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 22:40:26,320 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 22:40:26,320 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 22:40:26,320 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 22:40:26,327 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:26" (1/1) ... [2024-11-09 22:40:26,327 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:26" (1/1) ... [2024-11-09 22:40:26,328 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:26" (1/1) ... [2024-11-09 22:40:26,336 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 22:40:26,337 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:26" (1/1) ... [2024-11-09 22:40:26,337 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:26" (1/1) ... [2024-11-09 22:40:26,338 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:26" (1/1) ... [2024-11-09 22:40:26,339 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:26" (1/1) ... [2024-11-09 22:40:26,339 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:26" (1/1) ... [2024-11-09 22:40:26,340 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:26" (1/1) ... [2024-11-09 22:40:26,341 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 22:40:26,342 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 22:40:26,342 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 22:40:26,342 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 22:40:26,343 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:26" (1/1) ... [2024-11-09 22:40:26,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:40:26,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:40:26,371 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 22:40:26,372 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 22:40:26,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 22:40:26,409 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 22:40:26,409 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 22:40:26,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 22:40:26,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 22:40:26,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 22:40:26,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 22:40:26,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 22:40:26,461 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 22:40:26,464 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 22:40:26,570 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-09 22:40:26,572 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 22:40:26,609 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 22:40:26,610 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 22:40:26,610 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:40:26 BoogieIcfgContainer [2024-11-09 22:40:26,610 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 22:40:26,613 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 22:40:26,613 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 22:40:26,615 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 22:40:26,616 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:40:26" (1/3) ... [2024-11-09 22:40:26,617 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f7c5c09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:40:26, skipping insertion in model container [2024-11-09 22:40:26,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:26" (2/3) ... [2024-11-09 22:40:26,617 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f7c5c09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:40:26, skipping insertion in model container [2024-11-09 22:40:26,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:40:26" (3/3) ... [2024-11-09 22:40:26,619 INFO L112 eAbstractionObserver]: Analyzing ICFG geo1-ll_valuebound5.c [2024-11-09 22:40:26,653 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 22:40:26,653 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 22:40:26,703 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 22:40:26,710 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;@5578e86b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 22:40:26,710 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 22:40:26,714 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 22:40:26,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 22:40:26,720 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:40:26,720 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:40:26,721 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:40:26,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:40:26,725 INFO L85 PathProgramCache]: Analyzing trace with hash 223259572, now seen corresponding path program 1 times [2024-11-09 22:40:26,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:40:26,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422209008] [2024-11-09 22:40:26,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:40:26,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:40:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:40:26,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:40:26,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:40:26,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:40:26,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:40:26,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 22:40:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:40:26,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-09 22:40:26,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:40:26,865 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 22:40:26,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:40:26,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422209008] [2024-11-09 22:40:26,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422209008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:40:26,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:40:26,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 22:40:26,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033656468] [2024-11-09 22:40:26,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:40:26,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 22:40:26,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:40:26,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 22:40:26,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 22:40:26,892 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 22:40:26,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:40:26,906 INFO L93 Difference]: Finished difference Result 55 states and 76 transitions. [2024-11-09 22:40:26,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 22:40:26,907 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 31 [2024-11-09 22:40:26,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:40:26,912 INFO L225 Difference]: With dead ends: 55 [2024-11-09 22:40:26,912 INFO L226 Difference]: Without dead ends: 25 [2024-11-09 22:40:26,914 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 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 22:40:26,916 INFO L432 NwaCegarLoop]: 33 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, 33 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 22:40:26,917 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:40:26,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-09 22:40:26,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-09 22:40:26,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 22:40:26,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-11-09 22:40:26,941 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 31 [2024-11-09 22:40:26,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:40:26,941 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-11-09 22:40:26,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 22:40:26,942 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-11-09 22:40:26,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 22:40:26,943 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:40:26,943 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:40:26,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 22:40:26,944 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:40:26,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:40:26,944 INFO L85 PathProgramCache]: Analyzing trace with hash -911261034, now seen corresponding path program 1 times [2024-11-09 22:40:26,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:40:26,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376434807] [2024-11-09 22:40:26,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:40:26,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:40:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:40:26,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [278559563] [2024-11-09 22:40:26,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:40:26,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:40:26,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:40:26,983 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 22:40:26,984 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 22:40:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:40:27,046 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 22:40:27,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:40:27,162 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 22:40:27,163 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 22:40:27,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:40:27,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376434807] [2024-11-09 22:40:27,163 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:40:27,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278559563] [2024-11-09 22:40:27,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278559563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:40:27,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:40:27,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:40:27,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425755225] [2024-11-09 22:40:27,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:40:27,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:40:27,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:40:27,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:40:27,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:40:27,166 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-09 22:40:27,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:40:27,200 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2024-11-09 22:40:27,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:40:27,201 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 31 [2024-11-09 22:40:27,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:40:27,202 INFO L225 Difference]: With dead ends: 37 [2024-11-09 22:40:27,203 INFO L226 Difference]: Without dead ends: 34 [2024-11-09 22:40:27,203 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 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 22:40:27,204 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:40:27,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 93 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:40:27,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-09 22:40:27,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2024-11-09 22:40:27,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 23 states have internal predecessors, (23), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 22:40:27,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-11-09 22:40:27,213 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 31 [2024-11-09 22:40:27,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:40:27,214 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-11-09 22:40:27,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-09 22:40:27,214 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-11-09 22:40:27,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-09 22:40:27,215 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:40:27,215 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:40:27,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 22:40:27,415 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 22:40:27,415 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:40:27,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:40:27,416 INFO L85 PathProgramCache]: Analyzing trace with hash -513839387, now seen corresponding path program 1 times [2024-11-09 22:40:27,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:40:27,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962745962] [2024-11-09 22:40:27,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:40:27,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:40:27,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:40:27,679 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:40:27,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:40:27,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:40:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:40:27,686 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 22:40:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:40:27,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-09 22:40:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:40:27,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 22:40:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:40:27,729 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 22:40:27,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:40:27,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962745962] [2024-11-09 22:40:27,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962745962] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:40:27,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186987330] [2024-11-09 22:40:27,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:40:27,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:40:27,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:40:27,734 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 22:40:27,735 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 22:40:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:40:27,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 22:40:27,779 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:40:27,855 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 22:40:27,859 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 22:40:27,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186987330] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:40:27,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 22:40:27,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 10 [2024-11-09 22:40:27,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677719981] [2024-11-09 22:40:27,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:40:27,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 22:40:27,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:40:27,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 22:40:27,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-09 22:40:27,861 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 22:40:27,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:40:27,904 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2024-11-09 22:40:27,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 22:40:27,904 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2024-11-09 22:40:27,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:40:27,906 INFO L225 Difference]: With dead ends: 42 [2024-11-09 22:40:27,906 INFO L226 Difference]: Without dead ends: 33 [2024-11-09 22:40:27,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-09 22:40:27,907 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 3 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:40:27,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 115 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:40:27,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-09 22:40:27,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-09 22:40:27,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 22:40:27,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2024-11-09 22:40:27,914 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 38 [2024-11-09 22:40:27,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:40:27,915 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2024-11-09 22:40:27,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 22:40:27,915 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2024-11-09 22:40:27,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 22:40:27,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:40:27,916 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:40:27,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 22:40:28,116 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 22:40:28,116 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:40:28,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:40:28,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1703119370, now seen corresponding path program 1 times [2024-11-09 22:40:28,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:40:28,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391390971] [2024-11-09 22:40:28,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:40:28,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:40:28,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:40:28,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2001256135] [2024-11-09 22:40:28,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:40:28,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:40:28,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:40:28,135 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 22:40:28,137 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 22:40:28,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:40:28,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 22:40:28,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:40:28,307 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 22:40:28,308 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:40:28,695 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 22:40:28,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:40:28,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391390971] [2024-11-09 22:40:28,696 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:40:28,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001256135] [2024-11-09 22:40:28,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001256135] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 22:40:28,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 22:40:28,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2024-11-09 22:40:28,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504143277] [2024-11-09 22:40:28,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:40:28,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 22:40:28,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:40:28,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 22:40:28,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-09 22:40:28,697 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 22:40:28,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:40:28,728 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2024-11-09 22:40:28,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:40:28,728 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2024-11-09 22:40:28,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:40:28,730 INFO L225 Difference]: With dead ends: 40 [2024-11-09 22:40:28,730 INFO L226 Difference]: Without dead ends: 35 [2024-11-09 22:40:28,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-09 22:40:28,731 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:40:28,731 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 107 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:40:28,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-09 22:40:28,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-09 22:40:28,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 22:40:28,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2024-11-09 22:40:28,735 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 39 [2024-11-09 22:40:28,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:40:28,736 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2024-11-09 22:40:28,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 22:40:28,736 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2024-11-09 22:40:28,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-09 22:40:28,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:40:28,737 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:40:28,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 22:40:28,937 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 22:40:28,938 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:40:28,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:40:28,938 INFO L85 PathProgramCache]: Analyzing trace with hash -799821947, now seen corresponding path program 1 times [2024-11-09 22:40:28,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:40:28,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923390133] [2024-11-09 22:40:28,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:40:28,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:40:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:40:29,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:40:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:40:29,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:40:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:40:29,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 22:40:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:40:29,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-09 22:40:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:40:29,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 22:40:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:40:29,095 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-09 22:40:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:40:29,108 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-09 22:40:29,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:40:29,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923390133] [2024-11-09 22:40:29,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923390133] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:40:29,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101631730] [2024-11-09 22:40:29,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:40:29,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:40:29,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:40:29,111 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 22:40:29,112 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 22:40:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:40:29,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 22:40:29,149 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:40:29,258 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 22:40:29,259 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:40:29,335 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-09 22:40:29,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101631730] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:40:29,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:40:29,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 7] total 14 [2024-11-09 22:40:29,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456659563] [2024-11-09 22:40:29,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:40:29,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 22:40:29,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:40:29,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 22:40:29,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-09 22:40:29,337 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 states have internal predecessors, (33), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 22:40:29,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:40:29,429 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2024-11-09 22:40:29,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 22:40:29,429 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 states have internal predecessors, (33), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 46 [2024-11-09 22:40:29,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:40:29,430 INFO L225 Difference]: With dead ends: 35 [2024-11-09 22:40:29,430 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 22:40:29,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-11-09 22:40:29,434 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:40:29,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 111 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:40:29,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 22:40:29,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 22:40:29,435 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 22:40:29,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 22:40:29,435 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2024-11-09 22:40:29,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:40:29,435 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 22:40:29,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 states have internal predecessors, (33), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 22:40:29,435 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 22:40:29,436 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 22:40:29,437 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 22:40:29,453 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 22:40:29,638 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 22:40:29,641 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-09 22:40:29,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-09 22:40:29,734 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 22:40:29,749 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 10:40:29 BoogieIcfgContainer [2024-11-09 22:40:29,749 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 22:40:29,749 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 22:40:29,749 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 22:40:29,749 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 22:40:29,750 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:40:26" (3/4) ... [2024-11-09 22:40:29,752 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-09 22:40:29,755 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-09 22:40:29,755 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-09 22:40:29,759 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-11-09 22:40:29,759 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-09 22:40:29,759 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-09 22:40:29,759 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 22:40:29,816 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-09 22:40:29,816 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-09 22:40:29,816 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 22:40:29,816 INFO L158 Benchmark]: Toolchain (without parser) took 3737.55ms. Allocated memory was 159.4MB in the beginning and 251.7MB in the end (delta: 92.3MB). Free memory was 85.5MB in the beginning and 204.5MB in the end (delta: -119.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 22:40:29,817 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 159.4MB. Free memory is still 108.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 22:40:29,817 INFO L158 Benchmark]: CACSL2BoogieTranslator took 215.57ms. Allocated memory is still 159.4MB. Free memory was 85.3MB in the beginning and 72.8MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 22:40:29,817 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.17ms. Allocated memory is still 159.4MB. Free memory was 72.8MB in the beginning and 71.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 22:40:29,817 INFO L158 Benchmark]: Boogie Preprocessor took 21.14ms. Allocated memory is still 159.4MB. Free memory was 71.4MB in the beginning and 69.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 22:40:29,817 INFO L158 Benchmark]: IcfgBuilder took 268.44ms. Allocated memory is still 159.4MB. Free memory was 69.7MB in the beginning and 126.9MB in the end (delta: -57.2MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. [2024-11-09 22:40:29,818 INFO L158 Benchmark]: TraceAbstraction took 3136.30ms. Allocated memory was 159.4MB in the beginning and 251.7MB in the end (delta: 92.3MB). Free memory was 126.2MB in the beginning and 208.6MB in the end (delta: -82.4MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. [2024-11-09 22:40:29,818 INFO L158 Benchmark]: Witness Printer took 66.82ms. Allocated memory is still 251.7MB. Free memory was 208.6MB in the beginning and 204.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 22:40:29,819 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 159.4MB. Free memory is still 108.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 215.57ms. Allocated memory is still 159.4MB. Free memory was 85.3MB in the beginning and 72.8MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.17ms. Allocated memory is still 159.4MB. Free memory was 72.8MB in the beginning and 71.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.14ms. Allocated memory is still 159.4MB. Free memory was 71.4MB in the beginning and 69.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 268.44ms. Allocated memory is still 159.4MB. Free memory was 69.7MB in the beginning and 126.9MB in the end (delta: -57.2MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. * TraceAbstraction took 3136.30ms. Allocated memory was 159.4MB in the beginning and 251.7MB in the end (delta: 92.3MB). Free memory was 126.2MB in the beginning and 208.6MB in the end (delta: -82.4MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. * Witness Printer took 66.82ms. Allocated memory is still 251.7MB. Free memory was 208.6MB in the beginning and 204.5MB 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: 18]: 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 3 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.0s, OverallIterations: 5, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 459 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 339 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 181 IncrementalHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 120 mSDtfsCounter, 181 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 288 GetRequests, 248 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=4, InterpolantAutomatonStates: 28, 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 339 NumberOfCodeBlocks, 339 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 345 ConstructedInterpolants, 0 QuantifiedInterpolants, 776 SizeOfPredicates, 6 NumberOfNonLiveVariables, 376 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 255/266 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: 36]: Location Invariant Derived location invariant: null - ProcedureContractResult [Line: 12]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 15]: 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 22:40:29,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE