./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p18.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p18.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash b72f90ebf40fd3c3c0277f56c4a142ed4148949349e56c1308f0c136bbcf9246 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 02:59:27,587 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 02:59:27,682 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-10 02:59:27,687 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 02:59:27,688 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 02:59:27,713 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 02:59:27,714 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 02:59:27,714 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 02:59:27,715 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 02:59:27,715 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 02:59:27,716 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 02:59:27,716 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 02:59:27,717 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 02:59:27,717 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 02:59:27,718 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 02:59:27,718 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 02:59:27,718 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 02:59:27,722 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 02:59:27,723 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 02:59:27,723 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 02:59:27,723 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 02:59:27,724 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 02:59:27,724 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 02:59:27,724 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 02:59:27,724 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 02:59:27,724 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 02:59:27,725 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 02:59:27,725 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 02:59:27,725 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 02:59:27,725 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 02:59:27,726 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 02:59:27,726 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 02:59:27,726 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 02:59:27,726 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 02:59:27,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 02:59:27,726 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 02:59:27,727 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 02:59:27,727 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 02:59:27,727 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 02:59:27,727 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b72f90ebf40fd3c3c0277f56c4a142ed4148949349e56c1308f0c136bbcf9246 [2024-11-10 02:59:27,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 02:59:27,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 02:59:27,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 02:59:27,986 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 02:59:27,987 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 02:59:27,988 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p18.c [2024-11-10 02:59:29,335 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 02:59:29,507 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 02:59:29,508 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p18.c [2024-11-10 02:59:29,519 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/564008746/3e6521e67e3f441294d382eaea96471d/FLAGc15b2db6a [2024-11-10 02:59:29,532 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/564008746/3e6521e67e3f441294d382eaea96471d [2024-11-10 02:59:29,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 02:59:29,535 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 02:59:29,537 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 02:59:29,537 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 02:59:29,543 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 02:59:29,544 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 02:59:29" (1/1) ... [2024-11-10 02:59:29,545 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40a0789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:59:29, skipping insertion in model container [2024-11-10 02:59:29,545 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 02:59:29" (1/1) ... [2024-11-10 02:59:29,572 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 02:59:29,746 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/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p18.c[1266,1279] [2024-11-10 02:59:29,814 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 02:59:29,822 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 02:59:29,832 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/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p18.c[1266,1279] [2024-11-10 02:59:29,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 02:59:29,888 INFO L204 MainTranslator]: Completed translation [2024-11-10 02:59:29,889 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:59:29 WrapperNode [2024-11-10 02:59:29,889 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 02:59:29,890 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 02:59:29,890 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 02:59:29,891 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 02:59:29,897 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:59:29" (1/1) ... [2024-11-10 02:59:29,921 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:59:29" (1/1) ... [2024-11-10 02:59:29,969 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 325 [2024-11-10 02:59:29,970 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 02:59:29,971 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 02:59:29,971 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 02:59:29,971 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 02:59:29,982 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:59:29" (1/1) ... [2024-11-10 02:59:29,983 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:59:29" (1/1) ... [2024-11-10 02:59:29,992 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:59:29" (1/1) ... [2024-11-10 02:59:30,023 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]. [2024-11-10 02:59:30,023 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:59:29" (1/1) ... [2024-11-10 02:59:30,023 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:59:29" (1/1) ... [2024-11-10 02:59:30,036 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:59:29" (1/1) ... [2024-11-10 02:59:30,038 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:59:29" (1/1) ... [2024-11-10 02:59:30,045 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:59:29" (1/1) ... [2024-11-10 02:59:30,048 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:59:29" (1/1) ... [2024-11-10 02:59:30,054 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 02:59:30,055 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 02:59:30,056 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 02:59:30,056 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 02:59:30,056 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:59:29" (1/1) ... [2024-11-10 02:59:30,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 02:59:30,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 02:59:30,088 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) [2024-11-10 02:59:30,090 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 [2024-11-10 02:59:30,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 02:59:30,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 02:59:30,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 02:59:30,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 02:59:30,225 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 02:59:30,227 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 02:59:30,734 INFO L? ?]: Removed 124 outVars from TransFormulas that were not future-live. [2024-11-10 02:59:30,734 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 02:59:30,770 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 02:59:30,771 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 02:59:30,771 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 02:59:30 BoogieIcfgContainer [2024-11-10 02:59:30,772 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 02:59:30,774 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 02:59:30,774 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 02:59:30,778 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 02:59:30,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 02:59:29" (1/3) ... [2024-11-10 02:59:30,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1945729f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 02:59:30, skipping insertion in model container [2024-11-10 02:59:30,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:59:29" (2/3) ... [2024-11-10 02:59:30,781 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1945729f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 02:59:30, skipping insertion in model container [2024-11-10 02:59:30,781 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 02:59:30" (3/3) ... [2024-11-10 02:59:30,782 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p18.c [2024-11-10 02:59:30,794 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 02:59:30,794 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 02:59:30,842 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 02:59:30,848 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;@11d95a85, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 02:59:30,849 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-10 02:59:30,854 INFO L276 IsEmpty]: Start isEmpty. Operand has 65 states, 63 states have (on average 1.4603174603174602) internal successors, (92), 64 states have internal predecessors, (92), 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) [2024-11-10 02:59:30,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-10 02:59:30,863 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 02:59:30,863 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 02:59:30,864 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 02:59:30,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 02:59:30,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1490647578, now seen corresponding path program 1 times [2024-11-10 02:59:30,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 02:59:30,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145435708] [2024-11-10 02:59:30,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 02:59:30,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 02:59:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 02:59:31,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 02:59:31,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 02:59:31,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145435708] [2024-11-10 02:59:31,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145435708] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 02:59:31,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 02:59:31,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 02:59:31,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417990410] [2024-11-10 02:59:31,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 02:59:31,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 02:59:31,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 02:59:31,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 02:59:31,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 02:59:31,484 INFO L87 Difference]: Start difference. First operand has 65 states, 63 states have (on average 1.4603174603174602) internal successors, (92), 64 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2024-11-10 02:59:31,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 02:59:31,562 INFO L93 Difference]: Finished difference Result 105 states and 151 transitions. [2024-11-10 02:59:31,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 02:59:31,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-10 02:59:31,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 02:59:31,573 INFO L225 Difference]: With dead ends: 105 [2024-11-10 02:59:31,573 INFO L226 Difference]: Without dead ends: 62 [2024-11-10 02:59:31,576 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 02:59:31,579 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 0 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 02:59:31,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 208 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 02:59:31,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-10 02:59:31,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-11-10 02:59:31,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.4426229508196722) internal successors, (88), 61 states have internal predecessors, (88), 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) [2024-11-10 02:59:31,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 88 transitions. [2024-11-10 02:59:31,615 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 88 transitions. Word has length 26 [2024-11-10 02:59:31,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 02:59:31,615 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 88 transitions. [2024-11-10 02:59:31,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2024-11-10 02:59:31,616 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 88 transitions. [2024-11-10 02:59:31,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-10 02:59:31,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 02:59:31,618 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 02:59:31,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 02:59:31,619 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 02:59:31,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 02:59:31,620 INFO L85 PathProgramCache]: Analyzing trace with hash -889511940, now seen corresponding path program 1 times [2024-11-10 02:59:31,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 02:59:31,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384241374] [2024-11-10 02:59:31,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 02:59:31,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 02:59:31,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 02:59:31,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 02:59:31,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 02:59:31,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384241374] [2024-11-10 02:59:31,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384241374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 02:59:31,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 02:59:31,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 02:59:31,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803816322] [2024-11-10 02:59:31,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 02:59:31,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 02:59:31,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 02:59:31,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 02:59:31,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 02:59:31,808 INFO L87 Difference]: Start difference. First operand 62 states and 88 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2024-11-10 02:59:31,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 02:59:31,866 INFO L93 Difference]: Finished difference Result 104 states and 147 transitions. [2024-11-10 02:59:31,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 02:59:31,868 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-10 02:59:31,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 02:59:31,869 INFO L225 Difference]: With dead ends: 104 [2024-11-10 02:59:31,870 INFO L226 Difference]: Without dead ends: 64 [2024-11-10 02:59:31,870 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 02:59:31,871 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 0 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 02:59:31,872 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 205 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 02:59:31,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-10 02:59:31,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-10 02:59:31,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.4285714285714286) internal successors, (90), 63 states have internal predecessors, (90), 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) [2024-11-10 02:59:31,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 90 transitions. [2024-11-10 02:59:31,878 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 90 transitions. Word has length 27 [2024-11-10 02:59:31,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 02:59:31,878 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 90 transitions. [2024-11-10 02:59:31,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2024-11-10 02:59:31,879 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 90 transitions. [2024-11-10 02:59:31,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-10 02:59:31,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 02:59:31,880 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 02:59:31,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 02:59:31,880 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 02:59:31,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 02:59:31,881 INFO L85 PathProgramCache]: Analyzing trace with hash -2057822785, now seen corresponding path program 1 times [2024-11-10 02:59:31,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 02:59:31,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449490064] [2024-11-10 02:59:31,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 02:59:31,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 02:59:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 02:59:32,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 02:59:32,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 02:59:32,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449490064] [2024-11-10 02:59:32,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449490064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 02:59:32,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 02:59:32,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 02:59:32,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373364259] [2024-11-10 02:59:32,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 02:59:32,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 02:59:32,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 02:59:32,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 02:59:32,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 02:59:32,138 INFO L87 Difference]: Start difference. First operand 64 states and 90 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 02:59:32,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 02:59:32,209 INFO L93 Difference]: Finished difference Result 106 states and 148 transitions. [2024-11-10 02:59:32,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 02:59:32,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-10 02:59:32,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 02:59:32,211 INFO L225 Difference]: With dead ends: 106 [2024-11-10 02:59:32,211 INFO L226 Difference]: Without dead ends: 64 [2024-11-10 02:59:32,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 02:59:32,212 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 6 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 02:59:32,213 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 195 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 02:59:32,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-10 02:59:32,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-10 02:59:32,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.4126984126984128) internal successors, (89), 63 states have internal predecessors, (89), 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) [2024-11-10 02:59:32,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 89 transitions. [2024-11-10 02:59:32,223 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 89 transitions. Word has length 28 [2024-11-10 02:59:32,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 02:59:32,224 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 89 transitions. [2024-11-10 02:59:32,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 02:59:32,224 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 89 transitions. [2024-11-10 02:59:32,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-10 02:59:32,225 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 02:59:32,225 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 02:59:32,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 02:59:32,226 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 02:59:32,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 02:59:32,227 INFO L85 PathProgramCache]: Analyzing trace with hash -958301481, now seen corresponding path program 1 times [2024-11-10 02:59:32,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 02:59:32,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862793239] [2024-11-10 02:59:32,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 02:59:32,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 02:59:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 02:59:32,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 02:59:32,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 02:59:32,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862793239] [2024-11-10 02:59:32,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862793239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 02:59:32,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 02:59:32,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-10 02:59:32,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224164817] [2024-11-10 02:59:32,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 02:59:32,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 02:59:32,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 02:59:32,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 02:59:32,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-10 02:59:32,719 INFO L87 Difference]: Start difference. First operand 64 states and 89 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 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) [2024-11-10 02:59:32,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 02:59:32,861 INFO L93 Difference]: Finished difference Result 116 states and 160 transitions. [2024-11-10 02:59:32,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 02:59:32,862 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-10 02:59:32,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 02:59:32,863 INFO L225 Difference]: With dead ends: 116 [2024-11-10 02:59:32,863 INFO L226 Difference]: Without dead ends: 74 [2024-11-10 02:59:32,864 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-10 02:59:32,865 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 89 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 02:59:32,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 384 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 02:59:32,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-10 02:59:32,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2024-11-10 02:59:32,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.4027777777777777) internal successors, (101), 72 states have internal predecessors, (101), 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) [2024-11-10 02:59:32,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 101 transitions. [2024-11-10 02:59:32,870 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 101 transitions. Word has length 29 [2024-11-10 02:59:32,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 02:59:32,871 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 101 transitions. [2024-11-10 02:59:32,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 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) [2024-11-10 02:59:32,871 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 101 transitions. [2024-11-10 02:59:32,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-10 02:59:32,872 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 02:59:32,872 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 02:59:32,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 02:59:32,873 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 02:59:32,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 02:59:32,873 INFO L85 PathProgramCache]: Analyzing trace with hash -255034679, now seen corresponding path program 1 times [2024-11-10 02:59:32,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 02:59:32,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291150194] [2024-11-10 02:59:32,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 02:59:32,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 02:59:32,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 02:59:33,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 02:59:33,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 02:59:33,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291150194] [2024-11-10 02:59:33,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291150194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 02:59:33,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 02:59:33,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 02:59:33,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960099452] [2024-11-10 02:59:33,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 02:59:33,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 02:59:33,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 02:59:33,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 02:59:33,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 02:59:33,035 INFO L87 Difference]: Start difference. First operand 73 states and 101 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 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) [2024-11-10 02:59:33,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 02:59:33,129 INFO L93 Difference]: Finished difference Result 154 states and 208 transitions. [2024-11-10 02:59:33,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 02:59:33,129 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-10 02:59:33,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 02:59:33,130 INFO L225 Difference]: With dead ends: 154 [2024-11-10 02:59:33,130 INFO L226 Difference]: Without dead ends: 103 [2024-11-10 02:59:33,131 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-10 02:59:33,132 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 135 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 02:59:33,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 196 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 02:59:33,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-10 02:59:33,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 75. [2024-11-10 02:59:33,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.3918918918918919) internal successors, (103), 74 states have internal predecessors, (103), 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) [2024-11-10 02:59:33,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 103 transitions. [2024-11-10 02:59:33,145 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 103 transitions. Word has length 30 [2024-11-10 02:59:33,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 02:59:33,146 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 103 transitions. [2024-11-10 02:59:33,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 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) [2024-11-10 02:59:33,146 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 103 transitions. [2024-11-10 02:59:33,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-10 02:59:33,147 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 02:59:33,147 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 02:59:33,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 02:59:33,149 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 02:59:33,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 02:59:33,150 INFO L85 PathProgramCache]: Analyzing trace with hash -136992644, now seen corresponding path program 1 times [2024-11-10 02:59:33,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 02:59:33,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293052218] [2024-11-10 02:59:33,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 02:59:33,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 02:59:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 02:59:33,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 02:59:33,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 02:59:33,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293052218] [2024-11-10 02:59:33,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293052218] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 02:59:33,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 02:59:33,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 02:59:33,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91927965] [2024-11-10 02:59:33,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 02:59:33,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 02:59:33,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 02:59:33,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 02:59:33,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 02:59:33,417 INFO L87 Difference]: Start difference. First operand 75 states and 103 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2024-11-10 02:59:33,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 02:59:33,491 INFO L93 Difference]: Finished difference Result 132 states and 180 transitions. [2024-11-10 02:59:33,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 02:59:33,492 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-10 02:59:33,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 02:59:33,493 INFO L225 Difference]: With dead ends: 132 [2024-11-10 02:59:33,493 INFO L226 Difference]: Without dead ends: 81 [2024-11-10 02:59:33,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-10 02:59:33,494 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 72 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 02:59:33,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 199 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 02:59:33,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-10 02:59:33,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-11-10 02:59:33,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.3625) internal successors, (109), 80 states have internal predecessors, (109), 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) [2024-11-10 02:59:33,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 109 transitions. [2024-11-10 02:59:33,507 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 109 transitions. Word has length 30 [2024-11-10 02:59:33,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 02:59:33,507 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 109 transitions. [2024-11-10 02:59:33,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2024-11-10 02:59:33,510 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 109 transitions. [2024-11-10 02:59:33,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-10 02:59:33,511 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 02:59:33,512 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 02:59:33,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 02:59:33,512 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 02:59:33,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 02:59:33,513 INFO L85 PathProgramCache]: Analyzing trace with hash 191302799, now seen corresponding path program 1 times [2024-11-10 02:59:33,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 02:59:33,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559637474] [2024-11-10 02:59:33,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 02:59:33,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 02:59:33,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 02:59:33,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 02:59:33,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 02:59:33,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559637474] [2024-11-10 02:59:33,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559637474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 02:59:33,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 02:59:33,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 02:59:33,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102790346] [2024-11-10 02:59:33,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 02:59:33,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 02:59:33,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 02:59:33,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 02:59:33,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 02:59:33,671 INFO L87 Difference]: Start difference. First operand 81 states and 109 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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) [2024-11-10 02:59:33,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 02:59:33,739 INFO L93 Difference]: Finished difference Result 150 states and 197 transitions. [2024-11-10 02:59:33,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 02:59:33,740 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-10 02:59:33,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 02:59:33,740 INFO L225 Difference]: With dead ends: 150 [2024-11-10 02:59:33,741 INFO L226 Difference]: Without dead ends: 93 [2024-11-10 02:59:33,742 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-10 02:59:33,743 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 99 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 02:59:33,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 196 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 02:59:33,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-10 02:59:33,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2024-11-10 02:59:33,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.353658536585366) internal successors, (111), 82 states have internal predecessors, (111), 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) [2024-11-10 02:59:33,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 111 transitions. [2024-11-10 02:59:33,754 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 111 transitions. Word has length 31 [2024-11-10 02:59:33,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 02:59:33,754 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 111 transitions. [2024-11-10 02:59:33,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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) [2024-11-10 02:59:33,755 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 111 transitions. [2024-11-10 02:59:33,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-10 02:59:33,756 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 02:59:33,756 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 02:59:33,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 02:59:33,759 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 02:59:33,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 02:59:33,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1296754735, now seen corresponding path program 1 times [2024-11-10 02:59:33,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 02:59:33,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423797940] [2024-11-10 02:59:33,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 02:59:33,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 02:59:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 02:59:34,137 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 02:59:34,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 02:59:34,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423797940] [2024-11-10 02:59:34,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423797940] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 02:59:34,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874233911] [2024-11-10 02:59:34,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 02:59:34,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 02:59:34,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 02:59:34,141 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) [2024-11-10 02:59:34,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 02:59:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 02:59:34,326 INFO L255 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-10 02:59:34,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 02:59:34,643 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 02:59:34,644 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 02:59:34,878 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 02:59:34,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874233911] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 02:59:34,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 02:59:34,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 15 [2024-11-10 02:59:34,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82040639] [2024-11-10 02:59:34,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 02:59:34,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 02:59:34,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 02:59:34,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 02:59:34,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-11-10 02:59:34,883 INFO L87 Difference]: Start difference. First operand 83 states and 111 transitions. Second operand has 15 states, 15 states have (on average 7.866666666666666) internal successors, (118), 15 states have internal predecessors, (118), 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) [2024-11-10 02:59:35,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 02:59:35,307 INFO L93 Difference]: Finished difference Result 146 states and 192 transitions. [2024-11-10 02:59:35,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 02:59:35,308 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.866666666666666) internal successors, (118), 15 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-10 02:59:35,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 02:59:35,309 INFO L225 Difference]: With dead ends: 146 [2024-11-10 02:59:35,309 INFO L226 Difference]: Without dead ends: 89 [2024-11-10 02:59:35,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2024-11-10 02:59:35,311 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 278 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 02:59:35,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 153 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 02:59:35,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-10 02:59:35,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 82. [2024-11-10 02:59:35,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.2962962962962963) internal successors, (105), 81 states have internal predecessors, (105), 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) [2024-11-10 02:59:35,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 105 transitions. [2024-11-10 02:59:35,316 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 105 transitions. Word has length 50 [2024-11-10 02:59:35,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 02:59:35,316 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 105 transitions. [2024-11-10 02:59:35,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.866666666666666) internal successors, (118), 15 states have internal predecessors, (118), 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) [2024-11-10 02:59:35,316 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 105 transitions. [2024-11-10 02:59:35,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-10 02:59:35,317 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 02:59:35,318 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 02:59:35,336 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 02:59:35,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 02:59:35,519 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 02:59:35,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 02:59:35,519 INFO L85 PathProgramCache]: Analyzing trace with hash 486851451, now seen corresponding path program 1 times [2024-11-10 02:59:35,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 02:59:35,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015685507] [2024-11-10 02:59:35,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 02:59:35,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 02:59:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 02:59:35,984 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 02:59:35,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 02:59:35,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015685507] [2024-11-10 02:59:35,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015685507] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 02:59:35,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14942662] [2024-11-10 02:59:35,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 02:59:35,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 02:59:35,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 02:59:35,989 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) [2024-11-10 02:59:35,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 02:59:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 02:59:36,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-10 02:59:36,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 02:59:36,442 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 02:59:36,442 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 02:59:36,734 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 02:59:36,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14942662] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 02:59:36,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 02:59:36,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-11-10 02:59:36,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905951906] [2024-11-10 02:59:36,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 02:59:36,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-10 02:59:36,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 02:59:36,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-10 02:59:36,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-10 02:59:36,739 INFO L87 Difference]: Start difference. First operand 82 states and 105 transitions. Second operand has 17 states, 17 states have (on average 7.411764705882353) internal successors, (126), 17 states have internal predecessors, (126), 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) [2024-11-10 02:59:36,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 02:59:36,961 INFO L93 Difference]: Finished difference Result 108 states and 138 transitions. [2024-11-10 02:59:36,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 02:59:36,962 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 7.411764705882353) internal successors, (126), 17 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-10 02:59:36,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 02:59:36,962 INFO L225 Difference]: With dead ends: 108 [2024-11-10 02:59:36,962 INFO L226 Difference]: Without dead ends: 0 [2024-11-10 02:59:36,963 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2024-11-10 02:59:36,963 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 245 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 02:59:36,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 70 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 02:59:36,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-10 02:59:36,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-10 02:59:36,964 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) [2024-11-10 02:59:36,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-10 02:59:36,964 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2024-11-10 02:59:36,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 02:59:36,965 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-10 02:59:36,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.411764705882353) internal successors, (126), 17 states have internal predecessors, (126), 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) [2024-11-10 02:59:36,965 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-10 02:59:36,965 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-10 02:59:36,968 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-10 02:59:36,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 02:59:37,172 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,SelfDestructingSolverStorable8 [2024-11-10 02:59:37,176 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 02:59:37,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-10 02:59:37,214 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-10 02:59:37,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 02:59:37 BoogieIcfgContainer [2024-11-10 02:59:37,224 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-10 02:59:37,225 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 02:59:37,225 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 02:59:37,225 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 02:59:37,226 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 02:59:30" (3/4) ... [2024-11-10 02:59:37,228 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-10 02:59:37,242 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-11-10 02:59:37,242 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-10 02:59:37,243 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-10 02:59:37,243 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-10 02:59:37,358 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-10 02:59:37,358 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-10 02:59:37,358 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 02:59:37,359 INFO L158 Benchmark]: Toolchain (without parser) took 7823.69ms. Allocated memory was 192.9MB in the beginning and 268.4MB in the end (delta: 75.5MB). Free memory was 120.4MB in the beginning and 212.7MB in the end (delta: -92.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 02:59:37,359 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 125.8MB. Free memory is still 87.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 02:59:37,360 INFO L158 Benchmark]: CACSL2BoogieTranslator took 352.30ms. Allocated memory is still 192.9MB. Free memory was 120.4MB in the beginning and 104.5MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-10 02:59:37,360 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.96ms. Allocated memory is still 192.9MB. Free memory was 104.5MB in the beginning and 98.3MB in the end (delta: 6.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-10 02:59:37,361 INFO L158 Benchmark]: Boogie Preprocessor took 83.76ms. Allocated memory is still 192.9MB. Free memory was 98.3MB in the beginning and 94.6MB in the end (delta: 3.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 02:59:37,361 INFO L158 Benchmark]: IcfgBuilder took 716.94ms. Allocated memory is still 192.9MB. Free memory was 94.6MB in the beginning and 142.0MB in the end (delta: -47.4MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. [2024-11-10 02:59:37,361 INFO L158 Benchmark]: TraceAbstraction took 6450.36ms. Allocated memory was 192.9MB in the beginning and 268.4MB in the end (delta: 75.5MB). Free memory was 140.9MB in the beginning and 220.1MB in the end (delta: -79.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 02:59:37,362 INFO L158 Benchmark]: Witness Printer took 133.45ms. Allocated memory is still 268.4MB. Free memory was 220.1MB in the beginning and 212.7MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-10 02:59:37,364 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 125.8MB. Free memory is still 87.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 352.30ms. Allocated memory is still 192.9MB. Free memory was 120.4MB in the beginning and 104.5MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.96ms. Allocated memory is still 192.9MB. Free memory was 104.5MB in the beginning and 98.3MB in the end (delta: 6.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 83.76ms. Allocated memory is still 192.9MB. Free memory was 98.3MB in the beginning and 94.6MB in the end (delta: 3.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 716.94ms. Allocated memory is still 192.9MB. Free memory was 94.6MB in the beginning and 142.0MB in the end (delta: -47.4MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. * TraceAbstraction took 6450.36ms. Allocated memory was 192.9MB in the beginning and 268.4MB in the end (delta: 75.5MB). Free memory was 140.9MB in the beginning and 220.1MB in the end (delta: -79.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 133.45ms. Allocated memory is still 268.4MB. Free memory was 220.1MB in the beginning and 212.7MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. 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: 21]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 65 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.4s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 924 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 924 mSDsluCounter, 1806 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1292 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1158 IncrementalHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 514 mSDtfsCounter, 1158 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 281 GetRequests, 207 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=7, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 46 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 405 NumberOfCodeBlocks, 405 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 494 ConstructedInterpolants, 0 QuantifiedInterpolants, 2456 SizeOfPredicates, 7 NumberOfNonLiveVariables, 678 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 61/78 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: 86]: Location Invariant Derived location invariant: null RESULT: Ultimate proved your program to be correct! [2024-11-10 02:59:37,395 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