./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-programs/copysome2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d 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/array-programs/copysome2-1.i -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 f2acf1d88f73f9b993c11cfca399c08f166d9054c3a2d816b9c02e1296c27b35 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 09:56:56,718 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 09:56:56,787 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 09:56:56,791 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 09:56:56,794 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 09:56:56,820 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 09:56:56,823 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 09:56:56,823 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 09:56:56,823 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 09:56:56,824 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 09:56:56,824 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 09:56:56,824 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 09:56:56,825 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 09:56:56,826 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 09:56:56,827 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 09:56:56,827 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 09:56:56,827 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 09:56:56,831 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 09:56:56,831 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 09:56:56,831 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 09:56:56,831 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 09:56:56,832 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 09:56:56,832 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 09:56:56,832 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 09:56:56,833 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 09:56:56,833 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 09:56:56,833 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 09:56:56,833 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 09:56:56,833 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 09:56:56,834 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 09:56:56,834 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 09:56:56,834 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 09:56:56,834 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 09:56:56,835 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 09:56:56,835 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 09:56:56,839 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 09:56:56,839 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 09:56:56,839 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 09:56:56,839 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 09:56:56,840 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 09:56:56,840 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 09:56:56,840 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 09:56:56,840 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f2acf1d88f73f9b993c11cfca399c08f166d9054c3a2d816b9c02e1296c27b35 [2024-11-08 09:56:57,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 09:56:57,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 09:56:57,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 09:56:57,078 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 09:56:57,078 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 09:56:57,079 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-programs/copysome2-1.i [2024-11-08 09:56:58,488 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 09:56:58,661 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 09:56:58,662 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/copysome2-1.i [2024-11-08 09:56:58,667 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf97493eb/7af665e99a234b01a02f9942332a140e/FLAG333af4379 [2024-11-08 09:56:59,051 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf97493eb/7af665e99a234b01a02f9942332a140e [2024-11-08 09:56:59,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 09:56:59,055 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 09:56:59,056 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 09:56:59,056 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 09:56:59,061 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 09:56:59,062 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 09:56:59" (1/1) ... [2024-11-08 09:56:59,063 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@762a3c08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:56:59, skipping insertion in model container [2024-11-08 09:56:59,065 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 09:56:59" (1/1) ... [2024-11-08 09:56:59,087 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 09:56:59,245 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/copysome2-1.i[804,817] [2024-11-08 09:56:59,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 09:56:59,269 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 09:56:59,284 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/array-programs/copysome2-1.i[804,817] [2024-11-08 09:56:59,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 09:56:59,310 INFO L204 MainTranslator]: Completed translation [2024-11-08 09:56:59,310 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:56:59 WrapperNode [2024-11-08 09:56:59,311 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 09:56:59,312 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 09:56:59,312 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 09:56:59,312 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 09:56:59,319 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:56:59" (1/1) ... [2024-11-08 09:56:59,326 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:56:59" (1/1) ... [2024-11-08 09:56:59,346 INFO L138 Inliner]: procedures = 16, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 91 [2024-11-08 09:56:59,347 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 09:56:59,348 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 09:56:59,348 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 09:56:59,348 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 09:56:59,356 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:56:59" (1/1) ... [2024-11-08 09:56:59,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:56:59" (1/1) ... [2024-11-08 09:56:59,358 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:56:59" (1/1) ... [2024-11-08 09:56:59,369 INFO L175 MemorySlicer]: Split 13 memory accesses to 4 slices as follows [2, 3, 4, 4]. 31 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 6 writes are split as follows [0, 2, 3, 1]. [2024-11-08 09:56:59,370 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:56:59" (1/1) ... [2024-11-08 09:56:59,370 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:56:59" (1/1) ... [2024-11-08 09:56:59,375 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:56:59" (1/1) ... [2024-11-08 09:56:59,382 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:56:59" (1/1) ... [2024-11-08 09:56:59,383 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:56:59" (1/1) ... [2024-11-08 09:56:59,388 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:56:59" (1/1) ... [2024-11-08 09:56:59,390 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 09:56:59,391 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 09:56:59,391 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 09:56:59,391 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 09:56:59,392 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:56:59" (1/1) ... [2024-11-08 09:56:59,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 09:56:59,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:56:59,430 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) [2024-11-08 09:56:59,434 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 [2024-11-08 09:56:59,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 09:56:59,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 09:56:59,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 09:56:59,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 09:56:59,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-08 09:56:59,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 09:56:59,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 09:56:59,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 09:56:59,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 09:56:59,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-08 09:56:59,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 09:56:59,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 09:56:59,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 09:56:59,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 09:56:59,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 09:56:59,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-08 09:56:59,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 09:56:59,581 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 09:56:59,583 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 09:56:59,771 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-08 09:56:59,772 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 09:56:59,784 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 09:56:59,785 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-08 09:56:59,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 09:56:59 BoogieIcfgContainer [2024-11-08 09:56:59,785 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 09:56:59,788 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 09:56:59,788 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 09:56:59,791 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 09:56:59,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 09:56:59" (1/3) ... [2024-11-08 09:56:59,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c2e601 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 09:56:59, skipping insertion in model container [2024-11-08 09:56:59,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:56:59" (2/3) ... [2024-11-08 09:56:59,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c2e601 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 09:56:59, skipping insertion in model container [2024-11-08 09:56:59,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 09:56:59" (3/3) ... [2024-11-08 09:56:59,793 INFO L112 eAbstractionObserver]: Analyzing ICFG copysome2-1.i [2024-11-08 09:56:59,808 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 09:56:59,808 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 09:56:59,858 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 09:56:59,864 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;@54450059, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 09:56:59,865 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 09:56:59,869 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:59,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 09:56:59,874 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:56:59,874 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:56:59,875 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:56:59,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:56:59,880 INFO L85 PathProgramCache]: Analyzing trace with hash 551047633, now seen corresponding path program 1 times [2024-11-08 09:56:59,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:56:59,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416007202] [2024-11-08 09:56:59,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:56:59,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:57:00,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:57:00,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:57:00,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:57:00,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416007202] [2024-11-08 09:57:00,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416007202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:57:00,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 09:57:00,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 09:57:00,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211500955] [2024-11-08 09:57:00,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:57:00,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 09:57:00,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:57:00,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 09:57:00,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 09:57:00,188 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:57:00,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:57:00,242 INFO L93 Difference]: Finished difference Result 50 states and 76 transitions. [2024-11-08 09:57:00,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 09:57:00,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-08 09:57:00,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:57:00,255 INFO L225 Difference]: With dead ends: 50 [2024-11-08 09:57:00,256 INFO L226 Difference]: Without dead ends: 27 [2024-11-08 09:57:00,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 09:57:00,261 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 7 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:57:00,261 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 29 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:57:00,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-08 09:57:00,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2024-11-08 09:57:00,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 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) [2024-11-08 09:57:00,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-11-08 09:57:00,318 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 11 [2024-11-08 09:57:00,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:57:00,320 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-11-08 09:57:00,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:57:00,320 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2024-11-08 09:57:00,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-08 09:57:00,321 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:57:00,321 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:57:00,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 09:57:00,321 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:57:00,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:57:00,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1141073570, now seen corresponding path program 1 times [2024-11-08 09:57:00,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:57:00,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437611505] [2024-11-08 09:57:00,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:57:00,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:57:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:57:00,504 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 09:57:00,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:57:00,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437611505] [2024-11-08 09:57:00,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437611505] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:57:00,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152220236] [2024-11-08 09:57:00,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:57:00,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:57:00,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:57:00,509 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) [2024-11-08 09:57:00,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 09:57:00,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:57:00,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 09:57:00,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:57:00,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 09:57:00,648 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:57:00,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 09:57:00,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152220236] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:57:00,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:57:00,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-08 09:57:00,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552176981] [2024-11-08 09:57:00,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:57:00,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 09:57:00,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:57:00,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 09:57:00,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-08 09:57:00,684 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 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) [2024-11-08 09:57:00,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:57:00,807 INFO L93 Difference]: Finished difference Result 63 states and 87 transitions. [2024-11-08 09:57:00,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 09:57:00,808 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 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 19 [2024-11-08 09:57:00,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:57:00,809 INFO L225 Difference]: With dead ends: 63 [2024-11-08 09:57:00,809 INFO L226 Difference]: Without dead ends: 46 [2024-11-08 09:57:00,810 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-08 09:57:00,811 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 44 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:57:00,811 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 30 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:57:00,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-08 09:57:00,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-08 09:57:00,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 45 states have internal predecessors, (57), 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) [2024-11-08 09:57:00,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2024-11-08 09:57:00,824 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 19 [2024-11-08 09:57:00,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:57:00,824 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2024-11-08 09:57:00,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 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) [2024-11-08 09:57:00,825 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2024-11-08 09:57:00,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-08 09:57:00,826 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:57:00,827 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:57:00,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 09:57:01,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:57:01,031 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:57:01,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:57:01,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1011418317, now seen corresponding path program 2 times [2024-11-08 09:57:01,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:57:01,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846785099] [2024-11-08 09:57:01,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:57:01,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:57:01,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:57:01,243 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-08 09:57:01,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:57:01,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846785099] [2024-11-08 09:57:01,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846785099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:57:01,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 09:57:01,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 09:57:01,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456157361] [2024-11-08 09:57:01,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:57:01,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 09:57:01,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:57:01,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 09:57:01,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 09:57:01,249 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:57:01,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:57:01,293 INFO L93 Difference]: Finished difference Result 78 states and 98 transitions. [2024-11-08 09:57:01,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 09:57:01,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-08 09:57:01,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:57:01,295 INFO L225 Difference]: With dead ends: 78 [2024-11-08 09:57:01,295 INFO L226 Difference]: Without dead ends: 46 [2024-11-08 09:57:01,295 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 09:57:01,296 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 18 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:57:01,297 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 23 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:57:01,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-08 09:57:01,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-08 09:57:01,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 45 states have internal predecessors, (55), 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) [2024-11-08 09:57:01,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2024-11-08 09:57:01,309 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 43 [2024-11-08 09:57:01,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:57:01,309 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2024-11-08 09:57:01,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:57:01,309 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2024-11-08 09:57:01,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-08 09:57:01,310 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:57:01,310 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:57:01,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 09:57:01,311 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:57:01,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:57:01,311 INFO L85 PathProgramCache]: Analyzing trace with hash 9650037, now seen corresponding path program 1 times [2024-11-08 09:57:01,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:57:01,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561254147] [2024-11-08 09:57:01,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:57:01,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:57:01,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:57:01,501 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-08 09:57:01,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:57:01,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561254147] [2024-11-08 09:57:01,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561254147] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:57:01,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565925270] [2024-11-08 09:57:01,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:57:01,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:57:01,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:57:01,508 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) [2024-11-08 09:57:01,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 09:57:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:57:01,636 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 09:57:01,638 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:57:01,703 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-08 09:57:01,707 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:57:01,777 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-08 09:57:01,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565925270] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:57:01,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:57:01,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-11-08 09:57:01,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034513490] [2024-11-08 09:57:01,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:57:01,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 09:57:01,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:57:01,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 09:57:01,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2024-11-08 09:57:01,784 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 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) [2024-11-08 09:57:02,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:57:02,154 INFO L93 Difference]: Finished difference Result 145 states and 202 transitions. [2024-11-08 09:57:02,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 09:57:02,155 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 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 43 [2024-11-08 09:57:02,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:57:02,158 INFO L225 Difference]: With dead ends: 145 [2024-11-08 09:57:02,158 INFO L226 Difference]: Without dead ends: 110 [2024-11-08 09:57:02,159 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2024-11-08 09:57:02,160 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 117 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 09:57:02,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 63 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 09:57:02,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-08 09:57:02,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-11-08 09:57:02,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.238532110091743) internal successors, (135), 109 states have internal predecessors, (135), 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) [2024-11-08 09:57:02,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 135 transitions. [2024-11-08 09:57:02,181 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 135 transitions. Word has length 43 [2024-11-08 09:57:02,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:57:02,181 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 135 transitions. [2024-11-08 09:57:02,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 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) [2024-11-08 09:57:02,182 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 135 transitions. [2024-11-08 09:57:02,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-08 09:57:02,184 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:57:02,184 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 7, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:57:02,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 09:57:02,390 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,SelfDestructingSolverStorable3 [2024-11-08 09:57:02,391 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:57:02,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:57:02,391 INFO L85 PathProgramCache]: Analyzing trace with hash 762574501, now seen corresponding path program 2 times [2024-11-08 09:57:02,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:57:02,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836412696] [2024-11-08 09:57:02,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:57:02,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:57:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:57:02,999 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-08 09:57:03,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:57:03,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836412696] [2024-11-08 09:57:03,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836412696] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:57:03,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398198459] [2024-11-08 09:57:03,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 09:57:03,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:57:03,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:57:03,005 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:57:03,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 09:57:03,214 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 09:57:03,214 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:57:03,218 INFO L255 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 09:57:03,223 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:57:03,283 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-08 09:57:03,284 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:57:03,597 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-08 09:57:03,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398198459] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:57:03,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:57:03,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2024-11-08 09:57:03,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93025435] [2024-11-08 09:57:03,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:57:03,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-08 09:57:03,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:57:03,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-08 09:57:03,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2024-11-08 09:57:03,606 INFO L87 Difference]: Start difference. First operand 110 states and 135 transitions. Second operand has 29 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 29 states have internal predecessors, (71), 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) [2024-11-08 09:57:04,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:57:04,085 INFO L93 Difference]: Finished difference Result 895 states and 1184 transitions. [2024-11-08 09:57:04,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-08 09:57:04,086 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 29 states have internal predecessors, (71), 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 107 [2024-11-08 09:57:04,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:57:04,094 INFO L225 Difference]: With dead ends: 895 [2024-11-08 09:57:04,095 INFO L226 Difference]: Without dead ends: 812 [2024-11-08 09:57:04,098 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2024-11-08 09:57:04,099 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 422 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 09:57:04,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 54 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 09:57:04,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2024-11-08 09:57:04,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 222. [2024-11-08 09:57:04,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 1.244343891402715) internal successors, (275), 221 states have internal predecessors, (275), 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) [2024-11-08 09:57:04,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 275 transitions. [2024-11-08 09:57:04,143 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 275 transitions. Word has length 107 [2024-11-08 09:57:04,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:57:04,144 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 275 transitions. [2024-11-08 09:57:04,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 29 states have internal predecessors, (71), 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) [2024-11-08 09:57:04,144 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 275 transitions. [2024-11-08 09:57:04,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-08 09:57:04,147 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:57:04,147 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 19, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:57:04,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 09:57:04,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:57:04,348 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:57:04,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:57:04,349 INFO L85 PathProgramCache]: Analyzing trace with hash 518233129, now seen corresponding path program 3 times [2024-11-08 09:57:04,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:57:04,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138828908] [2024-11-08 09:57:04,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:57:04,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:57:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:57:05,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2678 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 2002 trivial. 0 not checked. [2024-11-08 09:57:05,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:57:05,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138828908] [2024-11-08 09:57:05,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138828908] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:57:05,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294610638] [2024-11-08 09:57:05,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 09:57:05,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:57:05,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:57:05,927 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:57:05,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 09:57:06,313 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-08 09:57:06,314 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:57:06,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 09:57:06,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:57:06,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2678 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 2553 trivial. 0 not checked. [2024-11-08 09:57:06,548 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:57:06,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2678 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 2553 trivial. 0 not checked. [2024-11-08 09:57:06,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294610638] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:57:06,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:57:06,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 5, 5] total 35 [2024-11-08 09:57:06,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292594434] [2024-11-08 09:57:06,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:57:06,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-08 09:57:06,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:57:06,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-08 09:57:06,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=481, Invalid=709, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 09:57:06,758 INFO L87 Difference]: Start difference. First operand 222 states and 275 transitions. Second operand has 35 states, 35 states have (on average 2.857142857142857) internal successors, (100), 35 states have internal predecessors, (100), 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) [2024-11-08 09:57:07,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:57:07,861 INFO L93 Difference]: Finished difference Result 452 states and 584 transitions. [2024-11-08 09:57:07,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-08 09:57:07,861 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.857142857142857) internal successors, (100), 35 states have internal predecessors, (100), 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 219 [2024-11-08 09:57:07,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:57:07,863 INFO L225 Difference]: With dead ends: 452 [2024-11-08 09:57:07,863 INFO L226 Difference]: Without dead ends: 285 [2024-11-08 09:57:07,866 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1434, Invalid=2472, Unknown=0, NotChecked=0, Total=3906 [2024-11-08 09:57:07,866 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 604 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 09:57:07,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 76 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 09:57:07,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-08 09:57:07,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 278. [2024-11-08 09:57:07,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 1.0722021660649819) internal successors, (297), 277 states have internal predecessors, (297), 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) [2024-11-08 09:57:07,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 297 transitions. [2024-11-08 09:57:07,906 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 297 transitions. Word has length 219 [2024-11-08 09:57:07,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:57:07,907 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 297 transitions. [2024-11-08 09:57:07,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.857142857142857) internal successors, (100), 35 states have internal predecessors, (100), 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) [2024-11-08 09:57:07,908 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 297 transitions. [2024-11-08 09:57:07,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-08 09:57:07,911 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:57:07,911 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:57:07,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 09:57:08,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:57:08,112 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:57:08,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:57:08,113 INFO L85 PathProgramCache]: Analyzing trace with hash 87947340, now seen corresponding path program 1 times [2024-11-08 09:57:08,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:57:08,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859963544] [2024-11-08 09:57:08,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:57:08,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:57:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:57:09,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2889 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 2160 trivial. 0 not checked. [2024-11-08 09:57:09,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:57:09,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859963544] [2024-11-08 09:57:09,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859963544] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:57:09,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733939374] [2024-11-08 09:57:09,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:57:09,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:57:09,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:57:09,528 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:57:09,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 09:57:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:57:09,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 1181 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-08 09:57:09,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:57:09,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2889 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 2160 trivial. 0 not checked. [2024-11-08 09:57:09,982 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:57:10,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2889 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 2160 trivial. 0 not checked. [2024-11-08 09:57:10,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733939374] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:57:10,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:57:10,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 59 [2024-11-08 09:57:10,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707740002] [2024-11-08 09:57:10,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:57:10,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-08 09:57:10,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:57:10,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-08 09:57:10,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2024-11-08 09:57:10,910 INFO L87 Difference]: Start difference. First operand 278 states and 297 transitions. Second operand has 59 states, 59 states have (on average 2.2033898305084745) internal successors, (130), 59 states have internal predecessors, (130), 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) [2024-11-08 09:57:12,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:57:12,030 INFO L93 Difference]: Finished difference Result 1511 states and 1913 transitions. [2024-11-08 09:57:12,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-08 09:57:12,030 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.2033898305084745) internal successors, (130), 59 states have internal predecessors, (130), 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 227 [2024-11-08 09:57:12,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:57:12,036 INFO L225 Difference]: With dead ends: 1511 [2024-11-08 09:57:12,036 INFO L226 Difference]: Without dead ends: 1290 [2024-11-08 09:57:12,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2024-11-08 09:57:12,038 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 756 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 09:57:12,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 62 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 09:57:12,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2024-11-08 09:57:12,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 462. [2024-11-08 09:57:12,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 461 states have (on average 1.1258134490238612) internal successors, (519), 461 states have internal predecessors, (519), 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) [2024-11-08 09:57:12,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 519 transitions. [2024-11-08 09:57:12,084 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 519 transitions. Word has length 227 [2024-11-08 09:57:12,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:57:12,085 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 519 transitions. [2024-11-08 09:57:12,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.2033898305084745) internal successors, (130), 59 states have internal predecessors, (130), 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) [2024-11-08 09:57:12,085 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 519 transitions. [2024-11-08 09:57:12,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2024-11-08 09:57:12,094 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:57:12,094 INFO L215 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 35, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:57:12,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 09:57:12,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:57:12,295 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:57:12,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:57:12,296 INFO L85 PathProgramCache]: Analyzing trace with hash 533193997, now seen corresponding path program 4 times [2024-11-08 09:57:12,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:57:12,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299911252] [2024-11-08 09:57:12,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:57:12,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:57:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:57:16,709 INFO L134 CoverageAnalysis]: Checked inductivity of 12488 backedges. 0 proven. 3136 refuted. 0 times theorem prover too weak. 9352 trivial. 0 not checked. [2024-11-08 09:57:16,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:57:16,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299911252] [2024-11-08 09:57:16,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299911252] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:57:16,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679922692] [2024-11-08 09:57:16,711 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 09:57:16,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:57:16,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:57:16,713 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:57:16,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 09:57:17,186 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 09:57:17,186 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:57:17,190 INFO L255 TraceCheckSpWp]: Trace formula consists of 1152 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 09:57:17,196 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:57:17,263 INFO L134 CoverageAnalysis]: Checked inductivity of 12488 backedges. 2450 proven. 0 refuted. 0 times theorem prover too weak. 10038 trivial. 0 not checked. [2024-11-08 09:57:17,263 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 09:57:17,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679922692] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:57:17,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 09:57:17,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [59] total 61 [2024-11-08 09:57:17,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105423200] [2024-11-08 09:57:17,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:57:17,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 09:57:17,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:57:17,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 09:57:17,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1716, Invalid=1944, Unknown=0, NotChecked=0, Total=3660 [2024-11-08 09:57:17,266 INFO L87 Difference]: Start difference. First operand 462 states and 519 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) [2024-11-08 09:57:17,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:57:17,343 INFO L93 Difference]: Finished difference Result 916 states and 1081 transitions. [2024-11-08 09:57:17,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 09:57:17,344 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 459 [2024-11-08 09:57:17,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:57:17,348 INFO L225 Difference]: With dead ends: 916 [2024-11-08 09:57:17,348 INFO L226 Difference]: Without dead ends: 662 [2024-11-08 09:57:17,351 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1716, Invalid=1944, Unknown=0, NotChecked=0, Total=3660 [2024-11-08 09:57:17,352 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:57:17,352 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 39 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:57:17,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2024-11-08 09:57:17,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 622. [2024-11-08 09:57:17,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 621 states have (on average 1.0966183574879227) internal successors, (681), 621 states have internal predecessors, (681), 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) [2024-11-08 09:57:17,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 681 transitions. [2024-11-08 09:57:17,401 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 681 transitions. Word has length 459 [2024-11-08 09:57:17,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:57:17,402 INFO L471 AbstractCegarLoop]: Abstraction has 622 states and 681 transitions. [2024-11-08 09:57:17,402 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) [2024-11-08 09:57:17,402 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 681 transitions. [2024-11-08 09:57:17,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2024-11-08 09:57:17,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:57:17,409 INFO L215 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:57:17,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 09:57:17,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:57:17,610 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:57:17,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:57:17,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1635541619, now seen corresponding path program 5 times [2024-11-08 09:57:17,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:57:17,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646829575] [2024-11-08 09:57:17,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:57:17,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:57:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:57:21,355 INFO L134 CoverageAnalysis]: Checked inductivity of 12488 backedges. 0 proven. 3136 refuted. 0 times theorem prover too weak. 9352 trivial. 0 not checked. [2024-11-08 09:57:21,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:57:21,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646829575] [2024-11-08 09:57:21,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646829575] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:57:21,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217992283] [2024-11-08 09:57:21,356 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 09:57:21,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:57:21,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:57:21,358 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:57:21,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process