./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/brs2f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/brs2f.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f5f17f058e96bd5c46baa242826f383c90eaddfa4dbca636ab924160b7cdb4ab --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-13 22:29:26,758 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 22:29:26,829 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 22:29:26,833 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 22:29:26,833 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 22:29:26,853 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 22:29:26,853 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 22:29:26,853 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 22:29:26,854 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 22:29:26,855 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 22:29:26,855 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 22:29:26,855 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 22:29:26,856 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 22:29:26,856 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 22:29:26,858 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 22:29:26,858 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 22:29:26,858 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 22:29:26,858 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 22:29:26,859 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 22:29:26,859 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 22:29:26,859 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 22:29:26,862 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 22:29:26,862 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 22:29:26,862 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 22:29:26,862 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 22:29:26,862 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 22:29:26,863 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 22:29:26,863 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 22:29:26,863 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 22:29:26,863 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 22:29:26,863 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 22:29:26,863 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 22:29:26,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 22:29:26,864 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 22:29:26,864 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 22:29:26,864 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 22:29:26,864 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 22:29:26,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 22:29:26,864 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 22:29:26,865 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 22:29:26,865 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 22:29:26,866 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 22:29:26,866 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5f17f058e96bd5c46baa242826f383c90eaddfa4dbca636ab924160b7cdb4ab [2024-10-13 22:29:27,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 22:29:27,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 22:29:27,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 22:29:27,069 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 22:29:27,069 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 22:29:27,070 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/brs2f.c [2024-10-13 22:29:28,349 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 22:29:28,497 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 22:29:28,498 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/brs2f.c [2024-10-13 22:29:28,503 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/decd22a93/0941345bfaf442909749641100303522/FLAG833f04db4 [2024-10-13 22:29:28,514 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/decd22a93/0941345bfaf442909749641100303522 [2024-10-13 22:29:28,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 22:29:28,517 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 22:29:28,518 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 22:29:28,518 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 22:29:28,525 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 22:29:28,526 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:29:28" (1/1) ... [2024-10-13 22:29:28,527 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@595aa4a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:28, skipping insertion in model container [2024-10-13 22:29:28,528 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:29:28" (1/1) ... [2024-10-13 22:29:28,552 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 22:29:28,714 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/brs2f.c[588,601] [2024-10-13 22:29:28,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 22:29:28,743 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 22:29:28,753 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/brs2f.c[588,601] [2024-10-13 22:29:28,766 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 22:29:28,786 INFO L204 MainTranslator]: Completed translation [2024-10-13 22:29:28,786 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:28 WrapperNode [2024-10-13 22:29:28,786 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 22:29:28,787 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 22:29:28,788 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 22:29:28,788 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 22:29:28,793 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:28" (1/1) ... [2024-10-13 22:29:28,798 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:28" (1/1) ... [2024-10-13 22:29:28,813 INFO L138 Inliner]: procedures = 17, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2024-10-13 22:29:28,814 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 22:29:28,814 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 22:29:28,814 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 22:29:28,815 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 22:29:28,822 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:28" (1/1) ... [2024-10-13 22:29:28,823 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:28" (1/1) ... [2024-10-13 22:29:28,824 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:28" (1/1) ... [2024-10-13 22:29:28,834 INFO L175 MemorySlicer]: Split 17 memory accesses to 4 slices as follows [2, 8, 3, 4]. 47 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0, 0]. The 4 writes are split as follows [0, 0, 2, 2]. [2024-10-13 22:29:28,835 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:28" (1/1) ... [2024-10-13 22:29:28,835 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:28" (1/1) ... [2024-10-13 22:29:28,838 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:28" (1/1) ... [2024-10-13 22:29:28,841 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:28" (1/1) ... [2024-10-13 22:29:28,841 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:28" (1/1) ... [2024-10-13 22:29:28,842 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:28" (1/1) ... [2024-10-13 22:29:28,844 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 22:29:28,844 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 22:29:28,844 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 22:29:28,844 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 22:29:28,845 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:28" (1/1) ... [2024-10-13 22:29:28,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 22:29:28,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:29:28,874 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) [2024-10-13 22:29:28,877 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 [2024-10-13 22:29:28,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 22:29:28,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 22:29:28,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 22:29:28,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-13 22:29:28,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-13 22:29:28,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-13 22:29:28,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 22:29:28,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 22:29:28,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-13 22:29:28,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-13 22:29:28,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 22:29:28,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 22:29:28,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 22:29:28,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 22:29:28,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 22:29:28,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-13 22:29:28,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-13 22:29:28,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 22:29:28,990 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 22:29:28,992 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 22:29:29,145 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-10-13 22:29:29,145 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 22:29:29,161 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 22:29:29,161 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-13 22:29:29,161 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:29:29 BoogieIcfgContainer [2024-10-13 22:29:29,161 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 22:29:29,163 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 22:29:29,163 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 22:29:29,165 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 22:29:29,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:29:28" (1/3) ... [2024-10-13 22:29:29,166 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2510b3dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:29:29, skipping insertion in model container [2024-10-13 22:29:29,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:28" (2/3) ... [2024-10-13 22:29:29,166 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2510b3dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:29:29, skipping insertion in model container [2024-10-13 22:29:29,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:29:29" (3/3) ... [2024-10-13 22:29:29,167 INFO L112 eAbstractionObserver]: Analyzing ICFG brs2f.c [2024-10-13 22:29:29,178 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 22:29:29,178 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 22:29:29,214 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 22:29:29,219 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;@7b38d05f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 22:29:29,219 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-13 22:29:29,222 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.625) internal successors, (26), 17 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) [2024-10-13 22:29:29,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-13 22:29:29,225 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:29:29,226 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:29:29,226 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:29:29,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:29:29,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1256235845, now seen corresponding path program 1 times [2024-10-13 22:29:29,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:29:29,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814185129] [2024-10-13 22:29:29,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:29:29,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:29:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:29:29,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:29:29,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:29:29,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814185129] [2024-10-13 22:29:29,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814185129] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:29:29,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:29:29,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 22:29:29,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638584959] [2024-10-13 22:29:29,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:29:29,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 22:29:29,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:29:29,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 22:29:29,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 22:29:29,373 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.625) internal successors, (26), 17 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) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2024-10-13 22:29:29,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:29:29,386 INFO L93 Difference]: Finished difference Result 33 states and 47 transitions. [2024-10-13 22:29:29,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 22:29:29,388 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2024-10-13 22:29:29,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:29:29,393 INFO L225 Difference]: With dead ends: 33 [2024-10-13 22:29:29,393 INFO L226 Difference]: Without dead ends: 15 [2024-10-13 22:29:29,395 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 22:29:29,397 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 22:29:29,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 22:29:29,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-10-13 22:29:29,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-10-13 22:29:29,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 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) [2024-10-13 22:29:29,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2024-10-13 22:29:29,420 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 10 [2024-10-13 22:29:29,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:29:29,421 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2024-10-13 22:29:29,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2024-10-13 22:29:29,421 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2024-10-13 22:29:29,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-13 22:29:29,422 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:29:29,422 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:29:29,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 22:29:29,422 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:29:29,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:29:29,423 INFO L85 PathProgramCache]: Analyzing trace with hash -2065910172, now seen corresponding path program 1 times [2024-10-13 22:29:29,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:29:29,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396693231] [2024-10-13 22:29:29,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:29:29,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:29:29,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:29:29,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:29:29,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:29:29,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396693231] [2024-10-13 22:29:29,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396693231] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:29:29,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:29:29,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 22:29:29,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136647836] [2024-10-13 22:29:29,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:29:29,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 22:29:29,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:29:29,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 22:29:29,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 22:29:29,533 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2024-10-13 22:29:29,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:29:29,599 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2024-10-13 22:29:29,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 22:29:29,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2024-10-13 22:29:29,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:29:29,600 INFO L225 Difference]: With dead ends: 32 [2024-10-13 22:29:29,600 INFO L226 Difference]: Without dead ends: 21 [2024-10-13 22:29:29,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 22:29:29,603 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 18 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:29:29,604 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 10 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:29:29,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-10-13 22:29:29,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2024-10-13 22:29:29,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:29:29,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2024-10-13 22:29:29,610 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 10 [2024-10-13 22:29:29,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:29:29,610 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2024-10-13 22:29:29,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2024-10-13 22:29:29,611 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2024-10-13 22:29:29,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-13 22:29:29,611 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:29:29,611 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:29:29,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 22:29:29,612 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:29:29,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:29:29,612 INFO L85 PathProgramCache]: Analyzing trace with hash 785079709, now seen corresponding path program 1 times [2024-10-13 22:29:29,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:29:29,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17310238] [2024-10-13 22:29:29,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:29:29,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:29:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:29:29,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 22:29:29,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:29:29,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17310238] [2024-10-13 22:29:29,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17310238] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:29:29,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:29:29,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 22:29:29,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674554209] [2024-10-13 22:29:29,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:29:29,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 22:29:29,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:29:29,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 22:29:29,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 22:29:29,859 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:29:29,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:29:29,905 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2024-10-13 22:29:29,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 22:29:29,905 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-10-13 22:29:29,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:29:29,906 INFO L225 Difference]: With dead ends: 26 [2024-10-13 22:29:29,906 INFO L226 Difference]: Without dead ends: 22 [2024-10-13 22:29:29,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-13 22:29:29,907 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 22:29:29,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 27 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 22:29:29,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-10-13 22:29:29,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2024-10-13 22:29:29,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 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) [2024-10-13 22:29:29,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2024-10-13 22:29:29,915 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 16 [2024-10-13 22:29:29,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:29:29,916 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2024-10-13 22:29:29,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:29:29,916 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2024-10-13 22:29:29,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-13 22:29:29,916 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:29:29,917 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:29:29,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 22:29:29,917 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:29:29,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:29:29,917 INFO L85 PathProgramCache]: Analyzing trace with hash -485999892, now seen corresponding path program 1 times [2024-10-13 22:29:29,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:29:29,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410251864] [2024-10-13 22:29:29,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:29:29,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:29:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:29:30,082 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:29:30,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:29:30,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410251864] [2024-10-13 22:29:30,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410251864] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:29:30,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859237743] [2024-10-13 22:29:30,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:29:30,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:29:30,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:29:30,085 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) [2024-10-13 22:29:30,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 22:29:30,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:29:30,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 22:29:30,152 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:29:30,231 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:29:30,231 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:29:30,278 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:29:30,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859237743] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:29:30,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:29:30,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-10-13 22:29:30,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962897308] [2024-10-13 22:29:30,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:29:30,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 22:29:30,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:29:30,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 22:29:30,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-13 22:29:30,280 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 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) [2024-10-13 22:29:30,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:29:30,358 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2024-10-13 22:29:30,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 22:29:30,359 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-10-13 22:29:30,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:29:30,360 INFO L225 Difference]: With dead ends: 42 [2024-10-13 22:29:30,360 INFO L226 Difference]: Without dead ends: 28 [2024-10-13 22:29:30,362 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-10-13 22:29:30,363 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 12 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:29:30,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 26 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:29:30,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-10-13 22:29:30,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2024-10-13 22:29:30,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 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) [2024-10-13 22:29:30,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-10-13 22:29:30,369 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 19 [2024-10-13 22:29:30,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:29:30,369 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-10-13 22:29:30,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 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) [2024-10-13 22:29:30,369 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-10-13 22:29:30,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-13 22:29:30,370 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:29:30,370 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:29:30,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 22:29:30,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:29:30,571 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:29:30,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:29:30,571 INFO L85 PathProgramCache]: Analyzing trace with hash -105964608, now seen corresponding path program 1 times [2024-10-13 22:29:30,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:29:30,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623668478] [2024-10-13 22:29:30,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:29:30,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:29:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:29:30,981 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:29:30,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:29:30,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623668478] [2024-10-13 22:29:30,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623668478] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:29:30,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978145979] [2024-10-13 22:29:30,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:29:30,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:29:30,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:29:30,983 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) [2024-10-13 22:29:30,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 22:29:31,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:29:31,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-13 22:29:31,034 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:29:31,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 22:29:31,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 22:29:31,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-13 22:29:31,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-10-13 22:29:31,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-13 22:29:31,253 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:29:31,253 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:29:31,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-10-13 22:29:31,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2024-10-13 22:29:31,428 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:29:31,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978145979] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:29:31,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:29:31,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 25 [2024-10-13 22:29:31,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513529404] [2024-10-13 22:29:31,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:29:31,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-13 22:29:31,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:29:31,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-13 22:29:31,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2024-10-13 22:29:31,430 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 25 states, 25 states have (on average 2.0) internal successors, (50), 25 states have internal predecessors, (50), 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) [2024-10-13 22:29:31,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:29:31,590 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2024-10-13 22:29:31,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 22:29:31,590 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.0) internal successors, (50), 25 states have internal predecessors, (50), 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 22 [2024-10-13 22:29:31,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:29:31,591 INFO L225 Difference]: With dead ends: 49 [2024-10-13 22:29:31,591 INFO L226 Difference]: Without dead ends: 29 [2024-10-13 22:29:31,591 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=567, Unknown=0, NotChecked=0, Total=702 [2024-10-13 22:29:31,592 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 18 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:29:31,592 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 47 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:29:31,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-10-13 22:29:31,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-10-13 22:29:31,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 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) [2024-10-13 22:29:31,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2024-10-13 22:29:31,596 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 22 [2024-10-13 22:29:31,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:29:31,596 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2024-10-13 22:29:31,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.0) internal successors, (50), 25 states have internal predecessors, (50), 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) [2024-10-13 22:29:31,596 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2024-10-13 22:29:31,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-13 22:29:31,597 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:29:31,597 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:29:31,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 22:29:31,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:29:31,798 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:29:31,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:29:31,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1605608937, now seen corresponding path program 2 times [2024-10-13 22:29:31,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:29:31,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214830584] [2024-10-13 22:29:31,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:29:31,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:29:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:29:31,910 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:29:31,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:29:31,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214830584] [2024-10-13 22:29:31,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214830584] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:29:31,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43713795] [2024-10-13 22:29:31,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 22:29:31,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:29:31,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:29:31,912 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:29:31,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 22:29:31,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 22:29:31,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:29:31,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 22:29:31,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:29:32,031 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:29:32,031 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:29:32,076 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:29:32,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43713795] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:29:32,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:29:32,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-10-13 22:29:32,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054194937] [2024-10-13 22:29:32,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:29:32,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 22:29:32,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:29:32,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 22:29:32,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-13 22:29:32,078 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:29:32,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:29:32,152 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2024-10-13 22:29:32,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 22:29:32,152 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-10-13 22:29:32,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:29:32,153 INFO L225 Difference]: With dead ends: 53 [2024-10-13 22:29:32,153 INFO L226 Difference]: Without dead ends: 33 [2024-10-13 22:29:32,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-10-13 22:29:32,154 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 12 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:29:32,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 33 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:29:32,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-10-13 22:29:32,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2024-10-13 22:29:32,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 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) [2024-10-13 22:29:32,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2024-10-13 22:29:32,158 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 25 [2024-10-13 22:29:32,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:29:32,158 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2024-10-13 22:29:32,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:29:32,159 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2024-10-13 22:29:32,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-13 22:29:32,159 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:29:32,159 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:29:32,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 22:29:32,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:29:32,360 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:29:32,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:29:32,361 INFO L85 PathProgramCache]: Analyzing trace with hash 50846651, now seen corresponding path program 3 times [2024-10-13 22:29:32,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:29:32,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523455876] [2024-10-13 22:29:32,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:29:32,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:29:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 22:29:32,393 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 22:29:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 22:29:32,429 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 22:29:32,429 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 22:29:32,430 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-13 22:29:32,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 22:29:32,433 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2024-10-13 22:29:32,457 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-13 22:29:32,459 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:29:32 BoogieIcfgContainer [2024-10-13 22:29:32,459 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-13 22:29:32,460 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-13 22:29:32,460 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-13 22:29:32,460 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-13 22:29:32,461 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:29:29" (3/4) ... [2024-10-13 22:29:32,462 INFO L133 WitnessPrinter]: Generating witness for reachability counterexample [2024-10-13 22:29:32,501 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-13 22:29:32,504 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-13 22:29:32,504 INFO L158 Benchmark]: Toolchain (without parser) took 3987.48ms. Allocated memory was 165.7MB in the beginning and 253.8MB in the end (delta: 88.1MB). Free memory was 95.7MB in the beginning and 121.1MB in the end (delta: -25.4MB). Peak memory consumption was 65.1MB. Max. memory is 16.1GB. [2024-10-13 22:29:32,505 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 125.8MB. Free memory is still 87.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 22:29:32,505 INFO L158 Benchmark]: CACSL2BoogieTranslator took 268.92ms. Allocated memory is still 165.7MB. Free memory was 95.7MB in the beginning and 83.6MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-13 22:29:32,505 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.45ms. Allocated memory is still 165.7MB. Free memory was 83.6MB in the beginning and 82.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 22:29:32,505 INFO L158 Benchmark]: Boogie Preprocessor took 29.41ms. Allocated memory is still 165.7MB. Free memory was 82.1MB in the beginning and 80.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 22:29:32,505 INFO L158 Benchmark]: RCFGBuilder took 317.27ms. Allocated memory is still 165.7MB. Free memory was 80.0MB in the beginning and 130.4MB in the end (delta: -50.4MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2024-10-13 22:29:32,506 INFO L158 Benchmark]: TraceAbstraction took 3296.48ms. Allocated memory was 165.7MB in the beginning and 253.8MB in the end (delta: 88.1MB). Free memory was 129.6MB in the beginning and 123.2MB in the end (delta: 6.4MB). Peak memory consumption was 96.3MB. Max. memory is 16.1GB. [2024-10-13 22:29:32,506 INFO L158 Benchmark]: Witness Printer took 44.27ms. Allocated memory is still 253.8MB. Free memory was 123.2MB in the beginning and 121.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 22:29:32,507 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 125.8MB. Free memory is still 87.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 268.92ms. Allocated memory is still 165.7MB. Free memory was 95.7MB in the beginning and 83.6MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.45ms. Allocated memory is still 165.7MB. Free memory was 83.6MB in the beginning and 82.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.41ms. Allocated memory is still 165.7MB. Free memory was 82.1MB in the beginning and 80.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 317.27ms. Allocated memory is still 165.7MB. Free memory was 80.0MB in the beginning and 130.4MB in the end (delta: -50.4MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3296.48ms. Allocated memory was 165.7MB in the beginning and 253.8MB in the end (delta: 88.1MB). Free memory was 129.6MB in the beginning and 123.2MB in the end (delta: 6.4MB). Peak memory consumption was 96.3MB. Max. memory is 16.1GB. * Witness Printer took 44.27ms. Allocated memory is still 253.8MB. Free memory was 123.2MB in the beginning and 121.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) VAL [N=3] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 VAL [N=3, a={-1:0}, i=0, sum={9:0}] [L31] COND TRUE i